Home

CPC400 Series User's Guide

1. Device Address Device Address Function Code Function Code _ Eight Bit Eight Bit I Data Bytes i Data Bytes Error Check Error Check Response Message from Slave o E Figure A 1 Query Response Cycle Query The function code in the query tells the addressed slave de vice what kind of action to perform The data bytes contain any additional information that the slave will need to per form the function For example function code 03 will query the slave to read holding registers and respond with their contents The data field must contain the information tell ing the slave which register to start at and how many reg isters to read The error check field provides a method for the slave to validate the integrity of the message contents Response If the slave makes a normal response the function code in the response is an echo of the function code in the query The data bytes contain the data collected by the slave such as register values or status If an error occurs the function code is modified to indicate that the response is an error re sponse and the data bytes contain a code that describes the error The error check field allows the master to confirm that the message contents are valid 184 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Appendix A Modbus Protocol Modbus ASCII and RTU Modes Message Framing Doc 0600 2900 2000 The
2. 100 1 00 Output of Primary Loop Percent of Full Scale Figure 3 9 Secondary Set Point When Primary Loop Has Heat and Cool Outputs High Set Point Engineering Units Low Set Point 0 1 00 Output of Primary Loop Percent of Full Scale Figure 3 10 Secondary Set Point When Primary Loop Has Heat Output Only Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup Proportional Only Control on the Primary Loop The PID parameters of the primary loop must be tuned to produce the desired effect on the set point of the secondary loop The primary loop typically uses proportional only con trol Disabling the integral and derivative components of PID makes the secondary set point a predictable function of the primary loop s process variable The proportional band is selected so that the set point of the secondary loop has the desired relationship to the pro cess variable of the primary loop For an example see Cas cade Control Example Water Tank on page 71 How To Set Up Cascade Control NOTE Cascade Control Example Doc 0600 2900 2000 1 For the primary cascade loop e Configure proportional only control For an ex ample see Cascade Control Example Water Tank on page 71 e Enter the desired set point See Changing the Set Point on page 54 2 For the secondary cascade loop e Set up PID control as you would for a standard closed loop a
3. 0 No terminal block accessory 1 18 terminal block 2 50 terminal block includes 3 foot 0 9 m 50 pin SCSI cable TB50 SCSI Power Supply 0 No power supply 2 120 240V ac 50 60 Hz power supply adapter 5V dc 4 A 15V dc 1 2 A CE approved SCSI Cables for use with TB50 SCSI 0 No special SCSI cable 3 foot 0 9 m cable is included with 50 terminal block 1 6 foot 1 8 m SCSI cable CA SCSI 6 2 3 foot 0 9 m right angle SCSI cable CA SCSI RT 3 3 6 foot 1 8 m right angle SCSI cable CA SCSI RT 6 Serial Cables for communications with computer 0 No serial communications cable 1 10 foot 3 0 m serial cable DB 9 female bare wire CA COMM 010 2 25 foot 7 6 m serial cable DB 9 female bare wire CA COMM 025 3 50 foot 15 2 m serial cable DB 9 female bare wire CA COMM 050 Serial Communications Jumper Settings 0 EIA TIA 232 1 EIA TIA 485 2 EIA TIA 485 terminated Special Inputs Standard unit is configured for thermocouples and 10 to 60mV process inputs For other sensors special inputs are required 0 Thermocouples and 10 to 60mvV inputs only X Number of current and voltage inputs Figure 1 1 CPC400 Standard Parts List Doc 0600 2900 2000 Watlow Anafaze Chapter 1 System Overview Special Process Input Type CPC400 Series User s Guide CPCSI Not required for thermocouple sensor inputs 23 RTD 43 0
4. Hardware failed because of excessive voltage on inputs See H W Fail ure Gain or Offset on page 146 Job Display Doc 0600 2900 2000 The job display appears if you load a job from memory If you load a job using the Load setup from job parameter the job display shows the following screen LOOP PROCESS UNITS fevbe To eee ch ie naff OB OP CRAP EP EL PERG ALARM SETPOINT STATUS OUT If the job was loaded using digital inputs the display shows this screen If parameters are modified while the job is running the dis play shows this screen To toggle between the job display and the loop display press O or Loop PROCESS UNITS SETPOINT STATUS OUT Loop PROCESS UNI ALARM SETPOINT STATUS Watlow Anafaze 53 Chapter 3 Operation and Setup Changing the Set Point CPC400 Series User s Guide How to Manually Change the Set Point Start at the loop display and follow these steps 1 2 Press to choose the appropriate loop Press The Set point parameter should appear If nothing happens the keypad may be locked see Key pad Lock on page 101 Also the Set point parameter is not available if cascade control or ratio control is en abled on the loop Press O or O to adjust the set point value Press to save the value and return to the loop dis play or press to save the value and switch to the set point for another loop or press 9 t
5. Doc 0600 2900 2000 Watlow Anafaze 97 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide BCD Job Load Logic oor PROCESS UNITS Choose which state is considered true for the digital in puts that are used for remote job selection logic hPL e Tf 1 true is selected then an input is true if connected AAN SEPON Ins oTa to controller common and false for an open circuit e IfO true is selected then an input is true for an open circuit and false if connected to controller common Table 5 4 shows which combinations of input states are re quired to load each job Values 1 true 0 or O true 1 Values in parentheses are for serial communications and LogicPro Default 1 true 0 Modbus Address 44838 Parameter Number 113 LogicPro Driver Database LogicPro Address 113 1 Table 5 4 Digital Input States Required to Load Each Job Digital Input Job 1 2 3 1 F F F 2 T F F 3 F T F 4 T T F 5 F F T 6 T F T 7 F T T 8 T T T 98 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Mode Override LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT A WARNING Chapter 5 Menu and Parameter Reference Choose the digital input to use for the mode override fea ture When the input is activated the controller sets all loops to manual mode at the output levels specified at the Sensor fail heat output and Sensor fail cool output parame
6. Ee e a l Ge is S Enis S E 2 co co co o si 6 ie e jen B co SL Q Figure 1 5 TB50 Watlow Anafaze provides cables required to install the CPC400 A 50 pin SCSI cable connects the TB50 to the CPC400 The optional cable used to connect the CPC400 to a comput er using EIA TIA 232 communications has a DB 9 or DB 25 connector for the computer and bare wires for connect ing to the CPC400 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Safety External Safety Devices Doc 0600 2900 2000 A WARNING Chapter 1 System Overview Watlow Anafaze has made every effort to ensure the reli ability and safety of this product In addition we have pro vided recommendations that will allow you to safely install and maintain this controller The CPC400 controller may fail full on 100 percent output power or full off 0 percent output power or may remain full on if an undetected sensor failure occurs Design your system to be safe even if the controller sends a 0 percent or 100 percent output power signal at any time Install independent external safety devices such as the Watlow Anafaze TLM 8 that will shut down the system ifa failure occurs Typically a shutdown device consists of an agency ap proved high low process limit controller that operates a shutdown device such as an mechanical contactor The lim it controller monitors for a hazardous condition such as an u
7. LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Cascade Low Set Point LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Use the cascade menu to configure cascade control Use cascade control to calculate the set point of the current loop the secondary or outer loop based upon the output of an other loop the primary or inner loop For more information about cascade control see Setting Up Cascade Control on page 69 Choose the primary loop The controller uses the output of the primary loop to calculate the set point of the current loop Values none 0 or loop 1 to 5 1 to 5 for a CPC404 or 1 to 9 1 to 9 for a CPC408 You cannot choose the current loop Values in parentheses are for serial communications or LogicPro Default none 0 Modbus Address Loops 1 to 9 44648 to 44654 Parameter Number 99 LogicPro Driver Database LogicPro Address Loops 1 to 9 99 1 to 99 9 Enter the set point to use for the current loop when the out put of the primary loop is at its minimum value The set point will never drop below this value e Ifthe primary loop has only the heat output enabled then this value is the set point when the heat output of the primary loop is 0 percent e Ifthe primary loop has only the cool output enabled or has the heat and cool outputs enabled then this value is the set point when the cool ou
8. On Off Control A method of control that turns the output full on until set point is reached and then off until the process differs from the set point by more than the hysteresis Open Loop A control system with no sensory feedback Doc 0600 2900 2000 CPC400 Series User s Guide Optical Isolation Two electronic networks that are connected through an LED Light Emitting Diode and a photoelectric receiver There is no electrical conti nuity between the two networks Output Control signal action in response to the differ ence between set point and process variable Output Type The form of control output such as time propor tioning distributed zero crossing Serial DAC or analog Also the description of the electrical hard ware that makes up the output Overshoot The amount by which a process variable exceeds the set point before it stabilizes P PID Proportional Integral Derivative A control mode with three functions Proportional action dampens the system response integral corrects for droops and derivative prevents overshoot and undershoot Polarity The electrical quality of having two opposite poles one positive and one negative Polarity determines the direction in which a current tends to flow Process Input A voltage or current input that represents a straight line function Process Variable PV The parameter that is controlled or measured Typical examples are temperature relativ
9. 35 Digital Outputs Control Alarm Logic 3 Digital Inputs Power Supply Pulse Input 11 Digital Outputs Control Alarm Logic Figure 2 1 CPC400 System Components Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation Mounting Controller Components NOTE A WARNING Recommended Tools Mounting the Controller Doc 0600 2900 2000 Install the controller in a location free from excessive heat gt 50 C dust and unauthorized handling Electromagnetic and radio frequency interference can induce noise on sen sor wiring Choose locations for the CPC400 and TB50 such that wiring can be routed clear of sources of interference such as high voltage wires power switching devices and motors For indoor use only To reduce the risk of fire or electric shock install the CPC400 in a controlled environment relative ly free of contaminants Use any of the following tools to cut a hole of the appropri ate size in the panel e Jigsaw and metal file for stainless steel and heavy weight panel doors e Greenlee 1 8 DIN rectangular punch Greenlee part number 600 68 for most panel materials and thick nesses e Nibbler and metal file for aluminum and lightweight panel doors You will also need these tools e Phillips head screwdriver e 1 8 inch 3 mm flathead screwdriver for wiring e Multimeter Mount the controller before you mount the terminal block or do an
10. 78 All values stored in the CPC400 are bits or integers Some integers represent settings that appear as text in the con troller interface or HMI program Some integers represent numeric settings When you read a parameter value using serial communica tions or a LogicPro program you read an integer or a bit To interpret this value or set a new value you must know the setting to which the integer value corresponds When the controller interface displays the setting as a word a phrase and in some cases a number see the param eter information in the Menu and Parameter Reference chapter The integer value appears in parentheses follow ing each option Use that integer value when you set or in terpret the value of the parameter using serial communications or a LogicPro program Some settings such as enabling alarms are stored as bits within words With LogicPro you can use the CALC func tion block s AND operator on the value and a mask word to read or change the particular bit in which you are inter ested Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Doc 0600 2900 2000 NOTE Chapter 3 Operation and Setup For example the bit that indicates whether or not the high deviation alarm has been acknowledged is the forth bit in the alarm acknowledge word for each channel To deter mine if the high deviation alarm has been acknowledged for a channel extract the fourth bit from that channel
11. CPC400 Series User s Guide Chapter 7 Specifications 1 0 in 7 0 in 1 6 in 25 mm 178 mm 41 mm p Pe 4 gt p 0 5 in 13 mm 1 96 in 50 mm Figure 7 2 CPC400 Clearances with Straight SCSI Cable Table 7 5 CPC400 with Right Angle SCSI Length 8 6 inches 218mm Width 3 78 inches 96 mm Height 1 96 inches 50 mm 1 0 in 7 0 in 0 60 in 25 mm 178 mm 15 mm p q P lt il 0 5 in 13 mm 7 D 1 96 in J 50 mm m e mg il l Figure 7 3 CPC400 Clearances with Right An gle SCSI Cable Doc 0600 2900 2000 Watlow Anafaze 167 Chapter 7 Specifications CPC400 Series User s Guide Table 7 6 CPC400 Connections Power Terminals TB2 Captive screw cage clamp Power Wire Gauge TB2 22 to 18 AWG 0 5 to 0 75 mm Power Terminal Torque TB2 4 4 to 5 3 in lb 0 5 to 0 6 Nm Sensor Terminals TB1 Captive screw cage clamp Sensor Wire Gauge TB1 Thermocouple 20 AWG 0 5 mm Process 22 to 20 AWG 0 5 mm Communications 24 AWG 0 2 mm Sensor Terminal Torque TB1 4 4 to 5 3 in lb 0 5 to 0 6 Nm Output Terminals TB18 Captive screw cage clamp Output Wire Gauge TB18 Multiconductor cables 24 AWG 0 2 mm Single wire 22 to 18 AWG 0 5 to 0 75 mm Output Terminal Torque TB18 SCSI Connector 4 4 to 5 3 in lb 0 5 to 0 6
12. Figure 3 14 Application Using Ratio Control Table 3 12 Ratio Control Settings for the Ratio Loop Loop 2 in the Example Menu Parameter Value Comment Rati Ratio master loop ai Loop 1 is the master loop gets eee ee 7 The minimum ratio loop set point is 0 0 gallons per second gps Ratio Ratio high SF 7 8 The maximum ratio loop set point is 7 0 gps The H320 flow rate 10 gps is multiplied by 0 5 to obtain the KOH flow rate 5 gps Ratio Fatio SF diff A For this example there is no set point differential Setting Up Differential Control Differential control is a simple application of ratio control used to control one process ratio loop at a differential or offset to another process master loop How to Set Up Differential Control Set up differential control as you would set up ratio control Set the Control ratio parameter to 1 0 and enter the de sired set point differential offset at the Ratio SP diff pa rameter Doc 0600 2900 2000 Watlow Anafaze 75 Chapter 3 Operation and Setup CPC400 Series User s Guide Differential Control Example Thermoforming A thermal forming application requires that the outer heat ers operate at temperature 50 F hotter than the center heaters The center heaters use infrared IR sensors for temperature feedback The outer heaters use thermocou ples for feedback We can use differential control to control the outer heaters at a
13. Doc 0600 2900 2000 lg ap Serial DAC 4 Holes for 8 3 5 mm Screws or Bolts m i C Electrical Connectors a jo O00 3 62 in 91 mm oo 3 00 in 76 mm F 0 37 in am__ 47 in P 119 mm 9 mm ma 0 65 in 17 mm Electrical Connectors 1 75 in n mm lt 5 40 in _ gt 137 mm Figure 2 10 Dual DAC and Serial DAC Dimen sions Watlow Anafaze 19 Chapter 2 Installation CPC400 Series User s Guide System Wiring Successful installation and operation of the control system can depend on placement of the components and on selec tion of the proper cables sensors and peripheral compo nents Routing and shielding of sensor wires and proper ground ing of components can insure a robust control system This section includes wiring recommendations instructions for proper grounding and noise suppression and consider ations for avoiding ground loops A WARNING To reduce the risk of electrical shock fire and equipment damage follow all local and national electrical codes Correct wire sizes fuses and thermal breakers are essential for safe operation of this equipment A CAUTION Do not wire bundles of low voltage signal and control circuits next to bundles of high voltage ac wiring High voltage may be inductively coupled onto the low voltage circuits whi
14. EN 61326 1997 Elektrogerate zur Messung Regelung und zum Laboreinsatz EMC Richtlinien Klasse A EN 61000 3 2 1995 EN 61000 3 3 1995 EN 61000 4 2 1995 EN 61000 4 3 1997 EN 61000 4 4 1995 EN 61000 4 5 1995 EN 61000 4 6 1994 EN 61000 4 11 1994 Grenzen der Oberwellenstromemissionen Grenzen der Spannungsschwankungen Elektrostatische Entladung Strahlungsimmunitat Elektrische schnelle St6Be SpannungsstoBimmunitat St rimmunitat Immunitat gegen Spannungsgefalle kurze Unterbrechungen und Spannungsabweichungen Mobiltelefon ENV 50204 1995 Declara que el producto siguiente Designaci n Serie CPC400 N meros de modelo 40 4 8 1 0 1 2 0 2 0 1 2 6 3 0 1 2 6 3 0 1 2 Cualquier letra numero Espanol Clasificaci n Categor a de instalaci n Il grado de contaminaci n ambiental II Tensi n nominal 12 a 24Vcc Consumo nominal de energ a 610 mA m ximo Cumple con los requisitos esenciales de las siguientes Directivas de la Uni n Europea usando las secciones pertinentes de las reglas normalizadas y los documentos relacionados que se muestran 89 336 EEC Directiva de Compatibilidad Electromagn tica EN 61326 1997 Equipo el trico para medici n control y uso en laboratorios Requisitos de compatibilidad electromagn tica Clase A EN 61000 3 2 1995 EN 61000 3 3 1995 EN 61000 4 2 1995 EN 61000 4 3 1997 EN 61000 4 4 1995 EN 61000 4 5 1995 EN 61000 4 6
15. Installation Category II Pollution Degree II 12 to 24V dc 610mA maximum English Designation Model Number s Classification Rated Voltage Rated Current Meets the essential requirements of the following European Union Directive s using the relevant section s of the normalized standards and related documents shown 89 336 EEC Electromagnetic Compatibility Directive EN 61326 1997 Electrical equipment for measurement control and laboratory use EMC requirements Class A EN 61000 3 2 1995 EN 61000 3 3 1995 EN 61000 4 2 1995 EN 61000 4 3 1997 EN 61000 4 4 1995 EN 61000 4 5 1995 EN 61000 4 6 1994 EN 61000 4 11 1994 Limits for harmonic current Limitations of voltage fluctuations and flicker Electrostatic discharge Radiated immunity Electrical fast transients Surge immunity Conducted immunity Voltage dips short interruptions and voltage variations immunity ENV 50204 1995 Cellular phone D clare que le produit suivant S rie CPC400 40 4 ou 8 1 0 1 ou 2 0 ou 2 0 1 2 ou 3 0 1 2 ou 3 0 1 ou 2 lettre ou chiffre quelconque Installation cat gorie II degr de pollution II 12 24V c c 610 mA maximum Fran ais D signation Num ro s de mod le s Classification Tension nominale Courant nominal Conforme aux exigences de la ou des directive s suivante s de l Union Europ enne figurant aux sections correspondantes des normes et documents ass
16. Other Symptoms 143 Table 6 3 Resistor Values for Current Inputs 159 Table 6 4 Resistor Locations for Current Inputs 159 Table 6 5 Resistor Values for Voltage Inputs 160 Table 6 6 Resistor Locations for Voltage Inputs 160 Table 6 7 Resistor Locations for RTD Inputs 161 Table 6 8 Dual DAC Jumper Settings 163 7 Specifications 165 Table 7 1 Agency Approvals Compliance 165 Table 7 2 Environmental Specifications 165 Table 7 3 Physical Dimensions 166 Table 7 4 CPC400 with Straight SCSI 166 Table 7 5 CPC400 with Right Angle SCSI 167 Table 7 6 CPC400 Connections 168 Table 7 7 TB50 Physical Dimensions 168 Table 7 8 TB50 Connections 169 Table 7 9 TB50 with Straight SCSI 169 Table 7 10 TB50 with Right Angle SCSI 170 Table 7 11 Analog Inputs 172 Table 7 12 Pulse Inputs 172 Table 7 13 Programmable Logic 173 Table 7 14 Thermocouple Range and Resolution 173 x Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide List of Tables Table 7 15 RTD Range and Resolution 173 Table 7 16 Input Resistance for Voltage Inputs 174 Table 7 17 Digital Inputs 174 Table 7 18 Digital Outputs Control Alarm 175 Table 7 19 CPU Watchdog Output 175 Table 7 20 5V dc Output Power to Operate Solid State Relays 175 Table 7 21 CPC400 Serial Interface 176 Table 7 22 CPC400 Power 176 Table 7 23 Power Supply Environmental Specifications 176 Table 7 24 Power Supply Agency Approvals Compliance
17. ial Default manual 0 AR SPORT SS oT Modbus Address Loops 1 to 9 40120 to 40128 Parameter Number 7 LogicPro Driver Database LogicPro Address Loops 1 to 9 7 1 to 7 9 92 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 5 Menu and Parameter Reference Table 5 1 Control Mode Menu Options Display Modbus or nai Value LogicPro Value Description marie 0 The operator manually sets the output power for the loop auto 1 The controller automatically controls the outputs The controller applies a step change and calculates initial PID parameters for the loop After the initial tuning the con AE trol mode changes to adapt to fine tune the loop This mode has no effect with on off control The controller automatically controls the outputs and adjusts 3 the control parameters This mode has no effect with on off process variable is outside the tune band Heat Cool Output LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Process Variable LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 control The mode display blinks when set to adapt but the Choose the manual output power level for this loop This parameter is available only for the manual control mode Values 0 to 100 0 to 1000 Values in parentheses are for serial communications and LogicPro Default 0 0 Modbus Address Loops 1 to 9 402
18. ters in the Output menu Use the Mode override D I active parameter to choose which signal state activates the mode override feature Values enabled by D I1 to enabled by D I8 1 to 8 or dis abled 0 Values in parentheses are for serial communica tions and LogicPro Default disabled 0 Modbus Address 44839 Parameter Number 114 LogicPro Driver Database LogicPro Address 114 1 Do not rely solely on the mode override feature to shut down your process Install external safety devices or overtemperature devices for emergen cy shutdowns Mode Override Digital Input Active LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Logic Program LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Choose whether the on state connected to controller com mon or off state open circuit activates the mode override feature Use the Mode override parameter to enable the mode over ride feature and select the digital input Values on 0 or off 1 Values in parentheses are for seri al communications and LogicPro Default on 0 Modbus Address 44840 Parameter Number 115 LogicPro Driver Database LogicPro Address 115 1 This parameter indicates whether a logic program is run ning You can also use this parameter to run or stop a logic program Values running 1 or stopped 0 Values in parentheses are for serial communications and LogicPro Default sto
19. ture goes in the opposite direction and to the opposite side of ambient temperature than expected for example a loop is heating and the measured temperature drops below the ambient temperature The thermocouple reversed alarm is enabled by default If false alarms occur in your application you can disable the alarm by setting the Reversed T C detect parameter to off See Reversed Thermocouple Detection on page 106 The thermocouple short alarm occurs if the process power is on and the temperature does not rise or fall as expected To enable the thermocouple short alarm you must do the following e Choose a digital input for the TC short alarm parame ter in the Global setup menu e Connect the digital input to a device that connects the input to controller common when the process power is on Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup RTD Open or RTD Shorted Alarm The RTD open alarm occurs if the controller detects that the positive or negative RTD lead is broken or disconnect ed The RTD shorted alarm occurs if the controller detects that the positive and negative RTD leads are shorted You do not have to set any parameters for the RTD alarms Restore Automatic Control After a Sensor Failure Process Alarms This feature returns a loop to automatic control after a failed sensor is repaired To enable this feature e Choose a digital input for the RestoreAut
20. 01 03 00 DE 00 01 E4 30 ler with address 1 Read set points of loops 4 and 5 500 and 600 from control o3 08 20 oF o9 02 Fa j Do ler with address 3 Table A 4 Sample Packet for Slave Response Data 1 Data 2 Slave Func Byte Example Address tion Count P CRG High Low High Low Read process variable of loop 2 from control 01 03 02 06 40 BA 14 ler with address 1 Read set points of loops 4 and 5 500 and 600 from control 03 03 04 01 F4 02 58 99 67 ler with address 3 Doc 0600 2900 2000 Watlow Anafaze 193 Appendix A Modbus Protocol Write Examples Example 1 CPC400 Series User s Guide The data written is echoed back to the controller The fol lowing examples show sample query and response packets The host query Table A 5 on page 194 uses the multiple point write function to write a value of 20 to the proportion al band for loop 1 in a controller with address 1 The slave responds Table A 6 on page 194 Table A 5 Sample Packet for Host Query Start Address Data Slave Address Function CRC High Low High Low 04 06 00 00 00 14 89 90 Table A 6 Sample Packet for Slave Response Start Address Data Slave Address Function CRC High Low High Low 04 06 00 00 00 14 89 90 Example 2 The host query Table A 7 on page 194 uses the mult
21. 162 sensor see sensor inputs setup parameters 104 specifications 171 174 thermocouple see thermocouples voltage see voltage inputs wiring see installation installation 11 alarm wiring 34 clearance 13 15 167 communications 41 control output wiring 34 controller 13 CPU watchdog timer 35 digital output wiring 32 33 Dual DAC 19 environment 13 ground loops see ground loops location 13 mounting 13 15 noise suppression see noise overview 11 panel hole dimensions 14 15 panel thickness 14 power supply 18 24 25 reference voltage terminals 30 sensor input wiring 27 31 Serial DAC 19 system components 12 TB50 16 17 26 testing 26 27 tie wrapping cables 32 tools 13 204 Watlow Anafaze CPC400 Series User s Guide torque for screw terminals 13 24 typical 12 wire recommendations 20 28 32 44 wire sizes controller 21 TB50 output 169 wiring 20 27 integers soft 130 integral description 83 guidelines for setting 86 87 setting a value 112 settings from other controllers 86 term versus reset settings 85 J Job running data modified 53 Job running remotely loaded 53 Job runnung 53 jobs loading from memory 96 remote selection 97 98 saving to memory 96 soft Boolean values saved to 131 soft integer values saved to 130 jumpers Dual DAC 163 EIA TIA 232 157 EIA TIA 485 157 in EIA TIA 232 connectors 42 power supply common 25 Serial DAC 162 when using 2 wire RTD 29 K keypad does not work 52 148 1
22. 1994 EN 61000 4 11 1994 L mites para emisiones de corriente arm nica Limitaciones de fluctuaciones del voltaje Descarga electrost tica Inmunidad radiada Perturbaciones transitorias el ctricas r pidas Sobretensi n Inmunidad conducida Ca das de tensi n interrupciones breves y variaciones de tensi n Tel fono port til ENV 50204 1995 Sean Wilkinson Name of Authorized Representative Watsonville California USA Place of Issue Feb 28 2003 Date of Issue Manager Title of Authorized Representative Signature of Authorized Representative Menu Structure CPC400 Series User s Guide Menu Structure ari page 125 216 Watlow Anafaze Doc 0600 2900 2000
23. 40844 Parameter Number 52 LogicPro Driver Database LogicPro Address 52 2 Indicates the firmware version number in the hundredths place to the right of the decimal point such as 7 for ver sion 1 07A Modbus Address 40845 Parameter Number 52 LogicPro Driver Database LogicPro Address 52 3 Indicates the ASCII code value for the firmware version let ter if present such as 65 the ASCII value for A for ver sion 1 07A Modbus Address 40846 Parameter Number 52 LogicPro Driver Database LogicPro Address 52 4 This read only parameter indicates the signal level detect ed when the controller measures its full scale reference voltage in performing its self calibration If the value drifts out of specified limits the controller places all loops in manual mode at 0 percent power and indicates a hardware failure This parameter is available only for serial communications and LogicPro programs Values 0 to 32767 counts Modbus Address 40718 Parameter Number 45 LogicPro Driver Database LogicPro Address 45 1 Check the status of the specific system conditions listed in Table 5 20 This parameter is available only for serial com munications and LogicPro programs See Bit Wise Values on page 78 for information on reading this parameter Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 5 Menu and Parameter Reference Values See Table 5 20 Modbus Address 40786 first
24. 55 e Set the output power percentage to the desired level see Changing the Control Mode and Output Power on page 55 e Set the output type to on off or TP see Heat Cool Output Type on page 116 If the control output is not connected to an output device like a solid state relay connect an LED in series with a 1 kQ resistor from 5V to the output Connect the anode of the LED to 5V The LED should be off when the output is 0 percent and on when the output is 100 percent Testing Control Output Devices Connect the solid state relay control terminals to the CPC400 control output and connect a light bulb or other load that can easily be verified to the output terminals on the solid state relay Put the loop in manual mode and set the output to 100 percent The ac load should turn on Do not attempt to measure ac voltage at the output termi nals of the solid state relay Without a load connected the solid state relay output terminals do not turn off This makes it difficult to determine whether the solid state re lay is actually working Measure the voltage across a load or use a load that can be visually verified such as a light bulb Testing the TB18 and TB50 150 1 Turn on power to the controller 2 Measure the 5V dc supply at the TB18 or TB50 The voltage should be 4 75 to 5 25V de a Connect the voltmeter s common lead to TB18 ter minal 2 or TB50 terminal 3 Watlow Anafaze Doc 0600 2900 2000
25. A standard for electrical characteristics of generators and receivers for use in balanced digital multipoint systems This is usually used to communicate with mul tiple devices over a common cable or where distances over 50 feet 15 m are required Electrical Noise See Noise Electromagnetic Interference EMI Electrical and magnetic noise imposed on a sys tem There are many possible causes such as switching ac power inside the sine wave EMI can interfere with the operation of controllers and other devices Electrical Mechanical Relays See Relay Electromechanical Emissivity The ratio of radiation emitted from a surface compared to radiation emitted from a blackbody at the same temperature Engineering Units Selectable units of measure such as degrees Cel sius or Fahrenheit pounds per square inch new tons per meter gallons per minute liters per minute cubic feet per minute or cubic meters per minute F Fahrenheit The temperature scale that sets the freezing point of water at 32 F and its boiling point at 212 F at standard atmospheric pressure The formula for conversion to Celsius is C 5 9 F 32 Failed Sensor Alarm Warns that an input sensor no longer produces a valid signal Filter Filters are used to handle various electrical noise problems Digital Filter A filter that slows the response of a system when inputs change unrealistically or too fast Equivalent to a standard res
26. Belden 9730 6 24 0 2 cation EIA TIA 232 Belden 9842 4 24 0 2 4000 ft 1219 m 422 or 485 or 20 mA Belden 9843 6 24 0 2 Belden 9184 4 22 0 5 6000 ft 1829 m Noise Suppression Symptoms of Noise Doc 0600 2900 2000 The CPC400 outputs are typically used to drive solid state relays These relays may in turn operate more inductive types of loads such as electromechanical relays alarm horns and motor starters Such devices may generate elec tromagnetic interference EMI or noise If the controller is placed close to sources of EMI it may not function correct ly Below are some tips on how to recognize and avoid prob lems with EMI For earth ground wire use a large gauge and keep the length as short as possible Additional shielding may be achieved by connecting a chassis ground strap from the panel to CPC400 case If your controller displays the following symptoms suspect noise e The display screen blanks out and then reenergizes as if power had been turned off for a moment e The process variable value is incorrect on the control ler display Noise may also damage the digital output circuit such that the digital outputs will not turn on If the digital output cir cuit is damaged return the controller to Watlow Anafaze for repair Watlow Anafaze 21 Chapter 2 Installation Avoiding Noise CPC400 Series User s Guide To avoid or eliminate most RFI EMI noise problems Connect t
27. CPC400 Series User s Guide Chapter 6 Troubleshooting and Reconfiguring b Connect the voltmeter s positive lead to the TB18 or TB50 terminal 1 Testing Control and Digital Outputs Testing Digital Inputs Doc 0600 2900 2000 1 2 Switch off power to the controller Disconnect any output wiring on the output to be test ed Connect a 500 Q to 100 kQ resistor between the 5V terminal TB18 or TB50 terminal 1 and the out put terminal you want to test Connect the voltmeter s common lead to the output terminal and connect the voltmeter s positive lead to the 5V terminal Restore power to the controller If you are testing a control output turn the output on and off by setting the loop to 100 percent and 0 percent output power see Changing the Control Mode and Output Power on page 55 When the output is off 0 percent the output voltage should be less than 1V When the output is on 100 percent the output volt age should be between 3 75 and 5 25V If you are testing a digital output not used for control use the I O tests menu to turn the output on and off See Test Digital Output 1 to 35 on page 182 Switch off power to the controller Disconnect any system wiring from the input to be tested Restore power to the controller Go to the Digital inputs parameter in the I O tests menu Attach a wire to the terminal of the digital input to test When the wire is connected only to the digita
28. RTD Open Tenth RTD Shorted Eleventh This read only parameter indicates the temperature mea sured by the cold junction compensation sensor located near the analog input terminal block This parameter is available only for serial communications and LogicPro programs Values Temperature in tenths of a degree Fahrenheit To convert to Celsius use the formula C 5 9 F 32 Modbus Address 40579 Parameter Number 34 LogicPro Driver Database LogicPro Address 34 1 Indicates the value measured by the sensor after filtering and scaling This parameter is read only Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Data Changed Register Firmware Identification Firmware Version Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Values For thermocouples and RTD inputs same as the input range see Table 5 7 on page 104 For process soft in teger and pulse inputs any value between the Input Range Low and Input Range High parameters in the Input menu Modbus Address Loops 1 to 9 45375 to 45383 Parameter Number 135 LogicPro Driver Database LogicPro Address Loops 1 to 9 135 1 to 135 9 Decimal Placement for Modbus or LogicPro see Dec imal Placement for Numeric Values on page 80 This register is a tool for hosts which need to maintain a mirror image of the CPC400 database Using a first in first out stack the change queue logs all changes to the data base that do
29. Returning a Unit A CAUTION Before trying to troubleshoot a problem by replac ing your controller with another one first check the installation If you have shorted sensor inputs to high voltage lines or a transformer is shorted out and you replace the controller you will risk damage to the new controller If you are certain the installation is correct you can try re placing the controller If the second unit works correctly then the problem is specific to the controller you replaced Before returning a controller contact your supplier or call Watlow Anafaze at 831 724 3800 for technical support Controllers purchased as part of a piece of equipment must be serviced or returned through the equipment manufac turer Equipment manufacturers and authorized distribu tors should call customer service at Watlow Anafaze to obtain a return materials authorization RMA number Shipments without an RMA will not be accepted Other us ers should contact their suppliers for instructions on re turning products for repair Troubleshooting the Controller 140 A problem may be indicated by one or more of several types of symptoms e A process alarm e A failed sensor alarm e Asystem alarm e Unexpected or undesired behavior The following sections list symptoms in each of these cate gories and suggest possible causes and corrective actions Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Process Al
30. and useful starting values Heat Cool Proportional Band oor PROCESS UNITS Enter the proportional band A larger value yields less pro iG i Heal portional action for a given deviation from set point Values For a thermocouple or RTD input see Table 5 12 AA SETPOINT STATS au For a process or pulse input 1 to the span of the input range Input range high Input range low Default 40 for a thermocouple RTD or process input 100 for a pulse input Modbus Address Loops 1 to 9 40001 to 40009 heat or 40018 to 40026 cool Parameter Number 0 heat or 1 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 0 1 to 0 9 heat or 1 1 to 1 9 cool Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Table 5 12 Proportional Band Values Type of Sensor Values in F Values in C J Thermocouple 1 to 1750 1 to 972 K Thermocouple 1 to 2950 1 to 1639 T Thermocouple 1 to 1200 1 to 667 S Thermocouple 1 to 3200 1 to 1778 R Thermocouple 1 to 3210 1 to 1784 B Thermocouple 1 to 3350 1 to 1694 E Thermocouple 1 to 1776 1 to 987 RTD 0 1 to 1478 0 0 1 to 821 1 Doc 0600 2900 2000 Watlow Anafaze 111 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Heat Cool Integral Loop process UNITS Enter the integral constant A larger value yields less inte 1 inbe gral action id Values
31. dimensions 166 environment 165 input specifications 171 174 mounting 13 output specifications 174 176 specifications 165 168 troubleshooting see troubleshooting weight 166 Controller address parameter 101 Cool action parameter 118 Cool cycle time parameter 117 Cool derivative parameter 112 Cool filter parameter 113 Cool integral parameter 112 Cool manual reset parameter 112 cool message on loop display 50 Cool output curve parameter 120 Cool output parameter 55 Cool output retrans PV parameter 126 Cool output type parameter 116 cool output see control outputs 202 Watlow Anafaze CPC400 Series User s Guide Cool power limit parameter 118 Cool prop band parameter 111 Cool SDAC signal parameter 117 counters clearing 192 CPU watchdog timer 35 175 CRC checking 189 CS 103 C UL see agency compliance current inputs scaling resistors 30 159 wiring 30 curve 120 cycle time 117 D D O alarm polarity parameter 67 103 DAC see Dual DAC or Serial DAC data changed register 135 data field Modbus 187 data logging 67 68 decimal placement 80 Declaration of Conformity 215 default settings restoring 153 derivative description 84 guidelines for setting 86 87 setting a value 112 settings from other controllers 86 term versus rate settings 86 deviation alarms see process alarms diagnostics functions 191 diagnostics register reading contents of 191 differential control see ratio control digital inputs m
32. disclaims all warranties express or implied including any warranty of merchantabil ity or fitness for a particular purpose Please Note External safety devices must be used with this equipment Table of Contents List of Figures v List of Tables ix 1 System Overview 1 Manual Contents 1 Getting Started 2 Product Features 2 CPC400 Parts List 4 Technical Description 6 Safety 9 2 Installation 11 Typical Installation 12 Mounting Controller Components 13 System Wiring 20 Power Connections 23 Testing the System 26 Sensor Wiring 27 Wiring Control and Digital I O 32 Analog Outputs 39 Serial Communications 41 3 Operation and Setup 47 General Navigation Map 48 Keypad 49 Displays 50 Changing the Set Point 54 Changing the Control Mode and Output Power 55 Accessing and Navigating the Setup Menus 56 Setting Up Closed Loop Control 57 Setting Up a Process or Pulse Input 58 Autotuning 62 Setting Up Alarms 63 Setting Up Process Variable Retransmit 67 Setting Up Cascade Control 69 Setting Up Ratio Control 73 Setting Up Differential Control 75 Doc 0600 2900 2000 Watlow Anafaze Table of Contents CPC400 Series User s Guide Setting Up Remote Analog Set Point 76 Setting Parameters Through Serial Communications or a LogicPro Program 78 4 Tuning and Control 81 Control Algorithms 81 Manually Tuning PID Loops 85 Control Outputs 88 5 Menu and Parameter Reference 91 Operator Parameters 92 Overview of the
33. e The load has decreased such that the temperature has risen e The heater is full on because of a hardware failure e The system is so poorly tuned that the temperature is cycling about set point by more than the alarm set point In cooling applications similar issues cause low alarms Watlow Anafaze 141 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide Responding to a Process Alarm Failed Sensor Alarms Your response to an alarm depends upon the alarm func tion setting as explained in Table 6 1 Table 6 1 Operator Response to Process Alarms Alarm Function Operator Response The operator does not need to acknowledge Boost the alarm The alarm clears automatically when the process variable returns within lim its Acknowledge the alarm by pressing 4 on the keypad or by using HMI software The Standard alarm clears after the operator acknowl edges it and the process variable returns within the limits When a failed sensor alarm occurs the controller switches to the single loop display for the loop with the alarm and displays an alarm code see Alarm Displays on page 51 WatView software displays a message on the alarm screen and logs the alarm in the event log A failed sensor alarm clears once it has been acknowledged and the sensor is repaired For more information about the causes of failed sensor alarms see Failed Sensor Alarms on page 63 Disable Failed S
34. or 180 1 to 130 9 cool Decimal Placement for Modbus or LogicPro See Dec imal Placement for Percentage Values on page 80 ALARM SETPOINT STATUS OUT 112 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Heat Cool Filter LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Hysteresis LOOP PROCESS UNITS ALARM SETPOINT STATUS Chapter 5 Menu and Parameter Reference Use this parameter to dampen the response of the heat or cool output The output responds to a change by going to approximately two thirds ofits final value within the spec ified number of scans A larger value results in a slower re sponse to changes in the process variable Values 0 off to 255 Default 3 Modbus Address Loops 1 to 9 40239 to 40247 heat or 40256 to 40264 cool Parameter Number 14 heat or 15 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 14 1 to 14 9 heat or 15 1 to 15 9 cool Specify how much the process variable must deviate from set point before the output can switch between on and off for on off control or switch between heating and cooling for heat cool control Values See Table 5 13 for values and decimal placement Default See Table 5 13 Modbus Address Loops 1 to 9 40856 to 40864 Parameter Number 54 LogicPro Driver Database LogicPro Address Loops 1 to 9 54 1 to 54 9 Decimal Placement for Modbus or L
35. scientific and dimensional standards developed in Germany Many DIN standards have worldwide recognition Deviation Alarm See High Deviation Alarm Low Deviation Alarm Digital to Analog Converter DAC A device that converts a numerical input signal to a signal that is proportional to the input in some way DIN See Deutsche Industrial Norms Direct Action An output control action in which an increase in the process variable causes an increase in the output Usually used with cooling applications Direct Current DC An electric current that flows in one direction Distributed Zero Crossing DZC A form of digital output control in which the out put on off state is calculated for every ac line cycle Power is switched at the zero cross which reduces electrical noise See also Zero Cross DZC See Distributed Zero Crossing E Earth Ground A metal rod usually copper that provides an electrical path to the earth to prevent or reduce the risk of electrical shock EIA TIA Electronic Industries Alliance EIA and Tele communications Industry Association TIA See also Serial Communications EIA TIA 232 A standard for interface between data terminal equipment and data communications equipment for serial binary data interchange This is usually for communi Doc 0600 2900 2000 CPC400 Series User s Guide cations over a short distance 50 feet 15 m or less and to a single device EIA TIA 485
36. 1 to 33 9 Process Variable Retransmit Menu LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Use the PV retrans menu to configure an output so that it will retransmit the process variable from another loop For details see Setting Up Process Variable Retransmit on page 67 This menu contains parameters for both heat and cool out puts The sample screens in this section show the heat pa rameters but the descriptions apply to both the heat and cool parameters Watlow Anafaze 125 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Heat Cool Output Retransmit LOOP PROCESS UNITS Choose the loop that provides the process variable to be re 4i i i transmitted For example in the sample display at left the heat output from loop 1 01 will retransmit the process variable from loop 2 Values none 0 or loop 1 to 5 1 to 5 for a CPC404 or 1 to 9 1 to 9 for a CPC408 Values in parentheses are for serial communications and LogicPro Default none 0 Modbus Address Loops 1 to 9 44478 to 44486 heat or 44495 to 44503 cool Parameter Number 89 heat or 90 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 89 1 to 89 9 heat or 90 1 to 90 9 cool ALARM SETPOINT STATUS OUT Heat Cool Retransmit Low Process Variable Loo Process UNITS Enter the value of the process variable to retransmit as a 0 Ai Ht a percent output signal If
37. 176 Table 7 25 Power Supply Physical Specifications 177 Table 7 26 Power Supply with Mounting Bracket 177 Table 7 27 Power Supply Inputs and Outputs 178 Table 7 28 Dual DAC Physical Specifications 178 Table 7 29 Dual DAC Power Requirements 179 Table 7 30 Dual DAC Specifications by Output Range 180 Table 7 381 Serial DAC Environmental Specifications 180 Table 7 382 Serial DAC Physical Specifications 180 Table 7 33 Serial DAC Agency Approvals Compliance 181 Table 7 34 Serial DAC Inputs 181 Table 7 85 Serial DAC Power Requirements 182 Table 7 836 Serial DAC Analog Output Specifications 182 Appendix A Modbus Protocol 183 Table A 1 Function Codes 190 Table A 2 Diagnostics Subfunctions 191 Table A 3 Sample Packet for Host Query 193 Table A 4 Sample Packet for Slave Response 193 Table A 5 Sample Packet for Host Query 194 Table A 6 Sample Packet for Slave Response 194 Table A 7 Sample Packet for Host Query 194 Table A B Sample Packet for Slave Response 194 Doc 0600 2900 2000 Watlow Anafaze xi List of Tables xii Watlow Anafaze CPC400 Series User s Guide Doc 0600 2900 2000 System Overview Manual Contents Doc 0600 2900 2000 This manual describes how to install set up and operate a CPC400 series controller Each chapter covers a different as pect of your control system and may apply to different users Chapter 1 System Overview provides a component list and summar
38. 49 1 third bit Digital Output arn 40790 fifth bit 49 Database 16 49 1 fifth bit Polarity Model and Firmware N A N A N A N A N A Version Doc 0600 2900 2000 Watlow Anafaze 209 Parameter Reference 210 CPC400 Series User s Guide Parameter LogicPro Size LogicPro Parameter Modbus Address Number Driver bits Address Input page 104 Input Type 40103 to 40111 6 Database 16 6 1 to 6 9 45309 and 45310 for 192 1 and loop 1 45311 and 132 2 for loop1 Loop Name pi 132 Database 16 132 3 and 45312 for loop 2 and 132 4 for loop so on 2 and so on 40792 40793 and 51 1 51 2 and 40794 for loop 1 51 3 for loop1 Input Units 40795 40796 and 51 Database 16 51 4 51 5 and 40797 for loop 2 and 51 6 for loop 2 so on and so on Input Pulse Sample 40580 35 Database 16 35 1 Calibration Offset 40649 to 40656 40 Database 16 40 1 to 40 8 Reversed Thermo 44443 to 44450 first bit 86 Database jg 86 1 to 86 8 couple Detection first bit Display Format 40666 to 40674 41 Database 16 41 1 to 41 9 Input Range High 40581 to 40589 36 Database 16 36 1 to 36 9 Input High Signal 40615 to 40623 38 Database 16 38 1 to 38 9 Input Range Low 40598 to 40606 37 Database 16 37 1 to 37 9 Input Low Signal 40632 to 40640 39 Database 16 39 1 to 39 9 Input Filter 44409 to 44417 84 Database 16 84 1 to 84 9 Channel page 109 45309 and 45310 for 192 an
39. Alarm Alarm Delay The lag time before an alarm is activated Alternating Current AC An electric current that reverses at regular inter vals and alternates positive and negative values Ambient Temperature The temperature of the air or other medium that surrounds the components of a thermal system American Wire Gauge AWG A standard of the dimensional characteristics of wire used to conduct electrical current or signals AWG is identical to the Brown and Sharpe B amp S wire gauge Ammeter An instrument that measures the magnitude of an electric current Ampere Amp A A unit that defines the rate of flow of electricity current in the circuit Units are one coulomb 6 25 x 1018 electrons per second Doc 0600 2900 2000 Glossary Analog Output A continuously variable signal that is used to represent a value such as the process value or set point value Typical hardware configurations are 0 to 20mA 4 to 20mA or 0 to 5V dc Automatic Mode A feature in which the controller sets PID control outputs in response to the process variable and the set point Automatic Reset The integral function of a PI or PID temperature controller that adjusts the process temperature to the set point after the system stabilizes The inverse of integral Autotune A feature that automatically sets temperature control PID values to match a particular thermal system AWG See American Wire Gauge B Baud Rate The
40. Coil 06 Preset Single Register 08 Diagnostics 15 Force Multiple Coils 16 Preset Multiple Registers Read Coil Status 01 Reads the on off status of discrete outputs OX references coils in the slave Broadcast is not supported Read Input Status 02 Reads the on off status of discrete inputs 1X references in the slave Broadcast is not supported Read Holding Registers 03 Reads the binary contents of holding registers 4X referenc es in the slave Broadcast is not supported Read Input Registers 04 Reads the binary contents of input registers 3X references in the slave Broadcast is not supported 190 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Force Single Coil 05 Preset Single Register 06 Diagnostics 08 Appendix A Modbus Protocol Forces a single coil OX reference to either on or off When broadcast the function forces the same coil reference in all attached slaves Presets a value into a single holding register 4X refer ence When broadcast the function presets the same reg ister reference in all attached slaves Provides a series of tests for checking the communication system between the master and slave or for checking var ious internal error conditions within the slave Broadcast is not supported The function uses a two byte subfunction code in the query to define the type of test to be performed The slave echoes both the function code and subfunction
41. Communications Parity Loo PROCESS UNTS Choose the parity for serial communications Values none 0 even 1 or odd 2 Values in parentheses are for serial communications and LogicPro AAN SETPONT O S o Default none 0 Modbus Address 44847 Parameter Number 122 LogicPro Driver Database LogicPro Address 122 1 AC Line Frequency Loor PROCESS UNITS Specify the ac line frequency The controller uses this infor OG F mation for correct timing of distributed zero crossing DZC output signals and for optimum filtering of analog inputs AAN SEPON STATS OUT If you edit this parameter you must switch power to the controller off then back on in order for the change take ef fect Values 50 1 or 60 0 Hz Values in parentheses are for serial communications and LogicPro and are stored as the third bit of the system command word so set or read only that bit Default 60 Hz 0 Modbus Address 40790 third bit Parameter Number 49 LogicPro Driver Database LogicPro Address 49 1 third bit 102 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 5 Menu and Parameter Reference Digital Output Alarm Polarity LOOP PROCESS UNITS ALARM SETPOINT STATUS OUTS Choose the polarity of all digital outputs used for alarms This setting does not apply to the global alarm output or the CPU watchdog output Values See Table 5 6 For serial commu
42. Database LogicPro Address Loops 1 to 9 27 1 to 27 9 Enter the amount by which the process variable must fall below the set point for the low deviation alarm to occur For more information see Process Alarms on page 65 Values See Table 5 13 on page 113 for values and decimal placement Default Table 5 13 on page 113 Modbus Address Loops 1 to 9 40358 to 40366 Parameter Number 21 LogicPro Driver Database LogicPro Address Loops 1 to 9 21 1 to 21 9 Choose whether the alarm functions as an alarm or as a boost output or disable the alarm Values See Table 5 16 on page 122 Default off Modbus and LogicPro See Alarm Acknowledge on page 132 and Alarm Function on page 133 Choose a digital output to activate when the low deviation alarm occurs You cannot choose an output that is in use for closed loop control or for the Serial DAC clock Values none 0 or output 1 to 34 1 to 34 Values in pa rentheses are for serial communications and LogicPro Watlow Anafaze 123 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Default none 0 Modbus Address Loops 1 to 9 40477 to 40485 Parameter Number 28 LogicPro Driver Database LogicPro Address Loops 1 to 9 28 1 to 28 9 Alarm Low Set Point Looe Process UNITS Enter the set point at which the low alarm activates The i Fy 4 le low alarm activates if the process variable drops below this value For more information see Process Alarms
43. Digital Inputs 1 to 8 40719 to 40726 Parameter Number 46 LogicPro Driver CPC400_Digital_In LogicPro Address Digital Inputs 1 to 8 1 to 8 Watlow Anafaze 131 Chapter 5 Menu and Parameter Reference Keypad Test LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Test Digital Output 1 to 35 LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT NOTE CPC400 Series User s Guide To test the keypad press This screen will appear Loop PROCESS UNITS ALARM SETPOINT STATUS OUT To test a key press it If the key is working properly an icon for that key appears When you are done testing the keypad press OO to return to the Keypad test parameter Use the Test D O parameter to manually toggle a digital output on and off Choose on to sink the current from the output to the controller common Choose off to stop the cur rent flow For instructions see Digital Output Test on page 26 You cannot toggle an output that is enabled for control When you exit the O tests menu all outputs that were forced on are turned off Values off 0 or on 1 Default off 0 Modbus Address Digital Outputs 1 to 35 40751 to 40785 Parameter Number 47 LogicPro Driver CPC400_Digital_Out LogicPro Address Digital Outputs 1 to 35 1 to 35 Additional Parameters for Serial Communications and LogicPro Programs Alarm Acknowledge 132 These parameters are available only
44. F i turn within the alarm limit before a high alarm low alarm or deviation alarm clears Use the alarm hysteresis to pre ALARM SETPOINT STATUS OUT 124 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 5 Menu and Parameter Reference vent repeated alarms as the process variable cycles around an alarm limit Values See Table 5 17 for values and decimal placement Default See Table 5 17 Modbus Address Loops 1 to 9 40375 to 40383 Parameter Number 22 LogicPro Driver Database LogicPro Address Loops 1 to 9 22 1 to 22 9 Table 5 17 Values for Alarm Hysteresis Input Type Display Format Values Default Thermocouple n a 0 to 500 2 RTD n a 0 to 500 0 2 0 999 to 3000 0 to 500 2 9999 to 30000 0 to 5000 20 999 9 to 3000 0 0 0 to 500 0 2 0 Process or Pulse 99 99 to 300 00 0 00 to 50 00 0 20 9 999 to 30 000 0 000 to 5 000 0 020 0 9999 to 3 0000 0 0000 to 0 5000 0 0020 Alarm Delay Loop PROCESS UNITS ALARM SETPOINT STATUS OUT Use this parameter to delay a failed sensor or process alarm until the alarm condition has been continuously present for longer than the delay time To delay alarms on powerup only see Power Up Alarm De lay on page 100 Values 0 to 255 seconds Default 0 Modbus Address Loops 1 to 9 40562 to 40570 Parameter Number 33 LogicPro Driver Database LogicPro Address Loops 1 to 9 33
45. Figure 2 27 Dual DAC with Current Output 39 Figure 2 28 Dual DAC with Voltage Output 40 Figure 2 29 Single Multiple Serial DACs 41 Doc 0600 2900 2000 Watlow Anafaze V List of Figures CPC400 Series User s Guide Figure 2 30 Connecting One CPC400 to a Computer Using EIA TIA 232 42 Figure 2 31 Four Wire EIA TIA 485 Wiring 43 Figure 2 32 Two Wire EIA TIA 485 Wiring 43 Figure 2 33 Recommended System Connections 44 3 Operation and Setup 47 Figure 3 1 General Navigation Map 48 Figure 3 2 Keypad Navigation 49 Figure 3 8 Loop Display 50 Figure 3 4 Loop Display with Alarm Code 51 Figure 3 5 Display for Failed Sensor Alarm 51 Figure 3 6 Input Scaling 59 Figure 3 7 Activation and Deactivation of Process Alarms 66 Figure 3 8 Application Using Process Variable Retransmit 68 Figure 3 9 Secondary Set Point When Primary Loop Has Heat and Cool Outputs 70 Figure 3 10 Secondary Set Point When Primary Loop Has Heat Output Only 70 Figure 3 11 Example Application Using Cascade Control 72 Figure 3 12 Relationship of Secondary Loop Set Point to Primary Loop Process Variable in Cascade Example 73 Figure 3 13 Relationship Between the Process Variable on the Master Loop and the Set Point of the Ratio Loop 74 Figure 3 14 Application Using Ratio Control 75 4 Tuning and Control 81 Figure 4 1 On Off Control 82 Figure 4 2 Proportional Control 83 Figure 4 3 Proportional and Integral Control 83 Fi
46. LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Heat Cool Output Curve LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT 120 If you set this parameter to on and a thermocouple open alarm occurs a loop set to automatic control mode will switch to manual mode at the average output prior to the alarm Values on 1 or off 0 Values in parentheses are for seri al communications and LogicPro and are stored as the sec ond heat or third bit cool of the value at this address Default off 0 Modbus Address Loops 1 to 9 44443 to 44451 second bit heat or third bit cool Parameter Number 86 LogicPro Driver Database LogicPro Address Loops 1 to 9 86 1 to 86 9 second bit heat or third bit cool Choose an output curve If curve 1 or 2 is selected a PID calculation results in a lower actual output level than the linear output requires Use curve 1 or 2 if the system has a nonlinear response to the output device Values linear 0 curve 1 1 or curve 2 2 Values in pa rentheses are for serial communications and LogicPro Default linear 0 Modbus Address Loops 1 to 9 44273 to 44281 heat or 44290 to 44298 cool Parameter Number 76 heat or 77 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 76 1 to 76 9 heat or 77 1 to 77 9 cool Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Alarms Menu LOO
47. Nm SCSI 2 female TB50 Physical Specifications 168 Table 7 7 TB50 Physical Dimensions Weight 0 32 Ib 0 15 kg Length 4 1 inches 104 mm Width 4 0 inches 102 mm Height 1 5 inches 37mm Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 7 Specifications 4 1 in 104 mm a BHEGRBBERE EE 2082009008008 eZ BUBRRRBRBREBEEA 1 5 in 37 mm Figure 7 4 TB50 Dimensions Table 7 8 TB50 Connections Screw Terminal Torque 4 4 to 5 3 in lb 0 5 to 0 6 Nm SCSI Connector on Board SCSI 2 female Output Terminals Captive screw cage clamp Multiconductor cables 24 AWG 0 2 mm Single wire 22 to 18 AWG 0 5 to 0 75 mm Output Wire Gauge Output Terminal Torque 4 4 to 5 3 in lb 0 5 to 0 6 Nm Table 7 9 TB50 with Straight SCSI Length 6 4 inches 163 mm Width 4 0 inches 102 mm Height 1 5 inches 37mm Doc 0600 2900 2000 Watlow Anafaze 169 Chapter 7 Specifications CPC400 Series User s Guide 6 4 in 163 mm SX Is Ais co l a Ti cO co co o co l Bis co o l lo ZR lle N Ico co A co S co ap COPS g co D COS le ee A 2 m Sle s E zo 4 0 in 1 5in 102 mm 37 mm Figure 7 5 TB50 Dimensions with Straight SCSI Cable Table 7 10 TB50 with Right Ang
48. Output Configure heat and cool outputs for each loop 116 Alarms Configure alarms for each loop 121 PV retrans Configure process variable retransmit 125 Cascade Configure cascade control 127 Ratio Configure ratio control 128 Soft integers Pass integer data 32768 to 32767 between a LogicPro logic 130 program and the operator Soft Booleans Pass Boolean data 0 or 1 between a LogicPro logic program 131 and the operator I O test Perform tests of the digital inputs digital outputs and keypad 131 94 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Navigation for the Setup Menus Q Access the setup menus press and hold for 3 seconds Cancel a change without saving Escape from a parameter to a menu Escape from a menu to the loop display A v Go to the next or previous menu Edit a parameter value gt Save a value and go to the next or previous parameter Save a value and go to the next or previous loop Figure 5 2 Setup Menus and Parameters Watlow Anafaze 95 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Global Setup Menu oor PROCESS UNITS Use the Global setup menu to set parameters that affect all i yob loops ALARM SETPOINT STATUS OUT Load Setup From Job oor Process UNITS Load one of the jobs stored in battery backed RAM The fol i lowing par
49. Power to Operate Solid State Relays 5V dc Maximum Current 350 mA Doc 0600 2900 2000 Watlow Anafaze 175 Chapter 7 Specifications CPC400 Series User s Guide Table 7 21 CPC400 Serial Interface Type EIA TIA 232 3 wire or EIA TIA 485 4 wire Isolation 530V ac Baud Rate 2400 9600 or 19200 user selectable Error Check Cyclic redundancy check CRC Number of Controllers 1 with EIA TIA 232 communications Up to 32 with EIA TIA 485 communications Protocol Modbus RTU Table 7 22 CPC400 Power Voltage 12 to 24V dc 15 Maximum Current 1A Power Common to Frame Ground 40V Maximum Potential CPC400 Power Supply 176 These specifications are for the power supply typically shipped If that power supply is not available a similar power supply may be substituted If the dimensions or oth er specifications deviate significantly the shipment will in clude updated specifications Table 7 23 Power Supply Environmental Specifications Storage Temperature 20 to 60 C Operating Temperature 0 to 50 C Humidity 10 to 95 non condensing Table 7 24 Power Supply Agency Approvals Compliance CE Directive LVD 93 68 EEC Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 7 Specifications Table 7 25 Power Supply Physical Specifica tions Weight 1 2 Ib 0 6 kg Length 6 9 inches 175
50. Pulse Input If you use a process or pulse input signal you must set up scaling parameters in the Input menu to scale the raw in put signals to the engineering units of the process Input Scaling To scale the input you enter values that represent two points on a conversion line Each point indicates an input signal level and the corresponding process value For a pulse input the input signal range is 0 to 2000 Hz For a process input the input signal is expressed as per cent of full range For example for a 0 to 20 mA process in put 0 mA is 0 percent 10 mA is 50 percent and so on The conversion line scales the input signal to the engineer ing units of the process For example in Figure 3 6 a 20 percent input signal corresponds to 8 pounds per square inch PSI and a 100 percent signal corresponds to 28 PSI 58 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup f I I I N P Process Variable Range for set points and alarms I t 0 20 100 Input Signal Figure 3 6 Input Scaling The range for set points and alarms is bound by the process variables that correspond to the 0 percent and 100 percent input signals or the 0 Hz and 2000 Hz signals for pulse in puts Bear in mind that the range for set points and alarms is not bound by the low and high process variable ranges that you enter in the scaling parameters Input Scaling Example 4 to 20 mA Sen
51. SDAC hi signal to 20 mA and set SDAC low signal to 4 mA Values 0 10 to 10 00V dc 10 to 1000 or 0 10 to 20 00 mA 10 to 2000 This value must be greater than the value of SDAC low signal Values in parentheses are for serial communications or LogicPro Default 10 00V dc 1000 or 20 00 mA 2000 Modbus Address Loops 1 to 9 44375 to 44383 heat or 44392 to 44400 cool Parameter Number 82 heat or 83 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 82 1 to 82 9 heat or 83 1 to 83 9 cool Heat Cool Action Loop process UNITS Choose the control action for the output When the action is E i set to reverse the output goes up when the process variable goes down When the action is set to direct the output goes down when the process variable goes down Normally heat outputs are set to reverse action and cool outputs are set to direct action ALARM SETPOINT STATUS OUT Values reverse 0 or direct 1 Values in parentheses are for serial communications and LogicPro Default reverse 0 for heat outputs direct 1 for cool out puts Modbus Address Loops 1 to 9 40171 to 40179 heat or 40188 to 40196 cool Parameter Number 10 heat or 11 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 10 1 to 10 9 heat or 11 1 to 11 9 cool Heat Cool Power Limit Toop PROCESS UNTS Use this parameter to limit the output power for a heat or 1G i cool output T
52. Series User s Guide Ratio Low Set Point LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Ratio High Set Point LOOP PROCESS UNITS ALARM SETPOINT STATUS OUTS Control Ratio LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Enter the lowest allowable set point for the current loop The set point will never drop below this value regardless of the result of the ratio calculation Values For a thermocouple or RTD input any value with in the input range see Table 5 7 on page 104 For a pro cess or pulse input any value between the Input range low and Input range high parameters This value must be less than the Ratio high SP parameter Default 25 or 0 for the pulse input Modbus Address Loops 1 to 9 44767 to 44775 Parameter Number 106 LogicPro Driver Database LogicPro Address Loops 1 to 9 106 1 to 106 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Enter the highest allowable set point for the current loop The set point will never exceed this value regardless of the result of the ratio calculation Values For a thermocouple or RTD input any value in the input sensor range see Table 5 7 on page 104 For a pro cess or pulse input any value from Input range low to Input range high This value must be greater than the Ratio low SP parame
53. Series User s Guide Chapter 3 Operation and Setup Setting Up Closed Loop Control Closed loop control is used to control an output based on feedback from a sensor or other signal Feedback The controller receives electrical signals or feedback from a sensor or other device The input parameters determine how the controller interprets the signal The controller in terprets or scales the input signal in engineering units such as C or F Control Algorithm When the controller is in automatic control mode and a set point is supplied the controller determines the appropriate output signal The controller calculates the output signal based on the feedback and the control algorithm Each loop may use ei ther on off control or any combination of proportional inte gral and derivative PID control See the Tuning and Control chapter for information about these control modes TRU TUNE When the controller is in the adaptive control mode it de termines the appropriate output signal and over time ad justs the control parameters to optimize responsiveness and stability This function is available only for heat and cool outputs not using on off control Control Output Signal Forms The output level calculated by the controller is represented by a percentage 0 to 100 percent of power to be applied That value is applied on a digital or analog output accord ing to the user selected output type See Heat Cool Output Ty
54. Setup Menus 94 Global Setup Menu 96 Input Menu 104 Channel Menu 109 Control Menu 111 Output Menu 116 Alarms Menu 121 Process Variable Retransmit Menu 125 Cascade Menu 127 Ratio Menu 128 Soft Integers Menu 130 Soft Booleans Menu 131 I O Tests Menu 131 Additional Parameters for Serial Communications and LogicPro Programs 132 6 Troubleshooting and Reconfiguring 139 When There is a Problem 139 Troubleshooting the Controller 140 Corrective and Diagnostic Procedures 145 Additional Troubleshooting for Computer Supervised Systems 152 Clearing the RAM 153 Replacing the Flash Memory Chip 154 Changing the Hardware Communications Protocol 157 Installing Scaling Resistors 157 Configuring Serial DAC Outputs 162 Configuring Dual DAC Outputs 163 7 Specifications 165 CPC400 System Specifications 165 CPC400 Power Supply 176 Dual DAC Specifications 178 Serial DAC Specifications 180 Appendix A Modbus Protocol 183 Master Slave Model 183 Modbus ASCII and RTU Modes 185 Message Framing 185 Error Checking Methods 188 Function Codes 190 Examples 193 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Table of Contents Glossary 195 Index 201 Parameter Address Reference 209 Declaration of Conformity 215 Menu Structure 216 Doc 0600 2900 2000 Watlow Anafaze iii Table of Contents CPC400 Series User s Guide iv Watlow Anafaze Doc 0600 2900 2000 List of Figures 1 System Overview 1 Figur
55. T NPH Pabia riirii mikia ELE fomi Input high signal LEG By Input range low jpa an perp m T KER gt La Sa aif Ept Ei t Input Scaling Example 0 to 5V dc Sensor Situation A flow sensor connected to the controller measures the flow in a pipe The sensor generates a 0 to 5V dc signal In dependent calibration measurements of the flow in the pipe indicate that the sensor generates 0 5V at 3 gallons per minute GPM and 4 75 V at 65 GPM The calibration in strument is accurate 1 GPM Setup For the Disp format parameter in the Input menu choose 999 to 3000 because the calibrating instrument is precise to 1 GPM The tables below show the minimum and maximum input signals and their corresponding process variables and the resulting values for the scaling parameters 60 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup Table 3 6 Input Readings and Calculations Process sensor Reading in Variable Input Percent of Full Scale Displayed 65 GPM 4 75V 4 75 V 5 00 V x 100 95 3 GPM 0 5 V 0 5 V 5 00 V x 100 10 Table 3 7 Scaling Values Parameter Value Ps sne pk ete sty Bente aeg oee ed Ese Input range high Input high signal Input Scaling Example Pulse Encoder Situation A pulse encoder measures the movement of a conveyor The encoder generates 900 pulses for every inch
56. This value must be greater than the Cascade low SP parameter Default 25 for a thermocouple RTD or process input 0 for the pulse input Modbus Address Loops 1 to 9 44699 to 44707 Parameter Number 102 LogicPro Driver Database LogicPro Address Loops 1 to 9 102 1 to 102 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Ratio Menu roop process UNITS Use the ratio menu to configure ratio control differential IHI Ratio i control or remote analog set point Use these control meth E ods to calculate the set point of the current loop the ratio loop based upon the process variable of another loop the master loop ALARM SETPOINT STATUS OUT For more information about ratio control see Setting Up Ratio Control on page 73 Setting Up Differential Control on page 75 and Setting Up Remote Analog Set Point on page 76 Ratio Master Loop Loor Process UNITS Choose the master loop The controller uses the process iil E D i variable of the master loop to calculate the set point of the current loop ALARM SETPOINT STATUS OUT Values none 0 or loop 1 to 5 1 to 5 for a CPC404 or 1 to 9 1 to 9 for a CPC408 You cannot choose the current loop Default none 0 Modbus Address Loops 1 to 9 44750 to 44758 Parameter Number 105 LogicPro Driver Database LogicPro Address Loops 1 to 9 105 1 to 105 9 128 Watlow Anafaze Doc 0600 2900 2000 CPC400
57. Wiring Digital Inputs Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation Functions Activated by Digital Inputs Use digital inputs to activate the following functions e Load a job that is stored in controller memory See BCD Job Load on page 97 e Change all loops to manual mode at specified output levels See Mode Override on page 99 e Enable thermocouple short detection See Thermocou ple Short Alarm on page 101 e Restore automatic control after a failed sensor has been repaired See Restore Automatic Mode on page 114 TB18 Connections Table 2 5 TB18 Connections Control Output Terminal Function CPC404 CPC408 1 5V dc 2 CTRL COM 3 Watchdog timer 4 Global alarm 5 Output 1 Loop 1 heat Loop 1 heat 6 Output 2 Loop 2 heat Loop 2 heat 7 Output 3 Loop 3 heat Loop 3 heat 8 Output 4 Loop 4 heat Loop 4 heat 9 Output 5 Pulse loop heat Loop 5 heat 10 Output 6 Loop 1 cool Loop 6 heat 11 Output 7 Loop 2 cool Loop 7 heat 12 Output 8 Loop 3 cool Loop 8 heat 13 Output 9 Loop 4 cool Pulse loop heat 14 Output 10 Pulse loop cool Loop 1 cool 15 Output 34 Serial DAC clock Serial DAC clock 16 Input 1 17 Input 2 18 Input 3 Pulse input Doc 0600 2900 2000 1 The indicated outputs are dedicated for control when enabled in the loop setup If one or both of the outputs are disabled for a loop then the corresponding digit
58. at selected line frequency A D Converter Integrates voltage to frequency Resolution 0 006 greater than 14 bits internal Input Range 10 to 60 mV or 0 to 12 V with scaling resistors 0 03 of full scale 60 mV at 25 C Accuracy 0 08 of full scale 60 mV at 0 to 50 C Calibration Automatic zero and full scale Open Thermocouple Detection Pulse type for upscale break detection Milliampere Inputs Special Input Voltage Ranges Available 0 to 20 mA 3 Q resistance or 0 to 10 mA 6 Q resistance with scaling resistors 0 to 12V 0 to 10V 0 to 5V 0 to 1V 0 to 500 mV 0 to 100 mV with scaling resistors Source Impedance For 60 mV thermocouple measurements are within specifica tion with up to 500 resistance For other types of analog signals the maximum source impedance is 5000 Q Table 7 12 Pulse Inputs Number 1 Frequency Range 0 to 2000 Hz Input Voltage Protection Diodes to supply and common Voltage Levels lt 0 7V Low gt 1 9V High TTL Maximum Switch Resistance to Pull Input Low 1 5 KQ Minimum Switch Off Resistance 30 kQ 172 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 7 Specifications Table 7 13 Programmable Logic Programming Languages Ladder diagram sequential function chart function block dia gram IEC 1131 3 Number of Instructions Memory 7 logic i
59. board and carefully unplug this board to access the bottom board Figure 6 2 shows the screws to remove Figure 6 2 Screw Locations on PC Board Doc 0600 2900 2000 Watlow Anafaze 155 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide 7 Locate the flash memory chip on the circuit board The flash memory chip is a 32 pin socketed chip that is la beled with the model version and checksum Figure 6 3 Location of Flash Memory Chip 8 Remove the existing flash memory chip from its socket with an IC extraction tool or a jeweler s flathead screwdriver Figure 6 4 Removal of Flash Memory Chip 9 Carefully insert the new flash memory chip into the socket Make sure that the chip is oriented so that its notch fits in the corresponding corner of the socket 10 Reverse steps 2 through 6 to reassemble the unit 11 Power up the controller 12 Re enter parameters 156 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 6 Troubleshooting and Reconfiguring Changing the Hardware Communications Protocol To switch between EJA TIA 232 and EIA TIA 485 change the jumpers as shown in Figure 6 5 JU1 4 o eae Pa JU2 Be o eo pa ep 4 JU3 e 4 o ep ep a JU4 sca o eb a JU5 e a o epa pa A B A B A B Configured for Configured for Last controller in EIA TIA 232 EIA TIA 485 system configured for EIA TIA 485 Figure 6 5 Jumper Confi
60. chapter Doc 0600 2900 2000 Watlow Anafaze 91 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Operator Parameters Use the operator parameters to change the set point con trol mode or output power level gt Access the operator parameters from the loop display Save a value and go to the next parameter v Edit parameter values Save a value and go to the previous parameter Save a value and go to the next or previous loop e Cancel a change without saving Escape to the loop display Figure 5 1 Operator Parameter Navigation Set Point Toor PROCESS UNS Enter the desired value for the process variable The new Dad i set point will take effect immediately when you save the new value The Set point parameter is not available if ratio control or cascade control is enabled for the loop ALARM SETPOINT STATUS OUT Values For thermocouples and RTD inputs same as the input range see Table 5 7 on page 104 For process and pulse inputs any value between the Input range low and Input range high parameters in the Input menu Default 25 Modbus Address Loops 1 to 9 40205 to 40213 Parameter Number 12 LogicPro Driver Setpoint LogicPro Address Loops 1 to 9 1 to 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Mode Toor PROCESS UNTS Choose the control mode for this loop iE Values See Table 5 1
61. circuits from the frequently noisy devices that take the analog signal from the Dual DAC Several Dual DAC modules may be powered by one power supply Consult the Specifications chapter for the Dual DAC s power requirements Also note in the specifications that the Dual DAC does not carry the same industry ap provals as the Serial DAC TB50 or TB18 Dual DAC 5V 1 1 5V CTRL Supply DZC CTRL PID Output 12 24V dc External Power Supply Control Output V dc Load Connection mA Load mAdc Load Connection External Power Supply V dc Load Connection 12 to 24V dc Power Supply Figure 2 27 Dual DAC with Current Output Watlow Anafaze 39 Chapter 2 Installation Wiring the Serial DAC 40 CPC400 Series User s Guide TB50 or TB18 Dual DAC 5V 1 1 45V CTRL Supply PID Loop Output 2 DZC CTRL PID Output 3 12 24V dc External Power Supply 4 V dc Load Connection Vdc Load 5 mAdc Load Connection 6 External Power Supply V dc Load Connection P 12 to 24V dc Power Supply Figure 2 28 Dual DAC with Voltage Output The Serial DAC provides a robust analog output signal The module converts the proprietary Serial DAC signal from the controller s open collector output in conjunction with the clock signal to an analog current or voltage See Figure 2 29 for wiring The Serial DAC is user configurable
62. code in a normal re sponse Most of the diagnostic queries use a two byte data field to send diagnostic data or control information to the slave Some of the diagnostics cause data to be returned from the slave in a data field of a normal response Table A 2 on page 191 describes the diagnostics 08 sub functions Table A 2 Diagnostics Subfunctions Data Field ou Description function p Query Response Echo Quer Return Query Data 00 Returns loops back the data 00 00 Any y passed in the query data field The entire response message Data i should be identical to the query Echo Query Restart Communications 01 Initializes and restarts the 00 00 j i thes Data slave s peripheral port and clears all of its communications event counters If the port is currently in listen only mode no 00 01 response is returned This function is the only one that brings FF 09 Echo Query the port out of listen only mode If the port is not currently in Data listen only mode a normal response is returned This occurs before the restart is executed Diagnostig Return Diagnostic Register 02 Returns the contents of the 00 02 0000 Register ee l Contents slave s 16 bit diagnostic register Doc 0600 2900 2000 Watlow Anafaze 191 Appendix A Modbus Protocol CPC400 Series User s Guide Data Field Sub Description function p Query Response Force Lis
63. different loop Save a change and go to a different loop Go to the scanning loop display hold for 3 seconds Get more information about the current screen Figure 3 2 Keypad Navigation Watlow Anafaze 49 Chapter 3 Operation and Setup CPC400 Series User s Guide Displays Loop Display The loop display shows detailed information about a loop Scrolling Rectangle Process Engineering if Logic is Running Variable Units Cool and Heat Output HH Power Set Point C ontrol Mode see Table 3 1 Figure 3 3 Loop Display Loop Name The control modes are described in Table 3 1 Table 3 1 Control Modes on the Loop Display Display Value Description The loop is in manual control One or both outputs are enabled The loop is in automatic control Only one out put heat or cool is enabled ae The heat and cool outputs are enabled The loop is in automatic control and heating The heat and cool outputs are enabled The loop is in automatic control and cooling The loop is in the initial autotune mode Blinks when tuning The loop is in adaptive control mode Only aco t one output heat or cool is enabled Blinks when outside the tune band Both the heat and the cool outputs are Htfd enabled The loop is in adaptive control and heating Blinks when outside the tune band Both the heat and the cool outputs are DiFicd enabled The loop is in a
64. each process alarm as either a standard alarm or a boost alarm e A standard alarm provides traditional alarm function ality The operator must acknowledge the alarm mes sage on the controller display a latching global alarm is activated and the alarm can activate a user speci fied non latching alarm output e A boost alarm provides on off control output using the alarm set points For example you could configure a high deviation alarm to turn on a fan The alarm acti vates a user specified non latching output Alarm messages do not have to be acknowledged and the glo bal alarm is not activated Alarm High and Alarm Low An alarm high occurs if the process variable rises above a user specified value An alarm low occurs if the process variable drops below a separate user specified value See Figure 3 7 Enter the alarm high and low set points at the Alarm high SP and Alarm low SP parameters in the Alarms menu High process alarm on High process alarm off High process alarm set point Deadband High deviation alarm off Setpoint Deviation alarm value Deadband Setpoint Low deviation alarm off EN Moe ey Deadband Setpoint Deviation alarm value Low deviation A alarm_on Fa EE EEEE E e A eee oe Deadband Low process alarm setpoint Low process alarm on Low process alarm off Figure 3 7 Activation and Deactivation of Pro cess Alarms Deviation Alarms A deviation alarm oc
65. for serial communica tions and LogicPro programs They are not accessible through the controller keypad Indicates whether an alarm has been acknowledged To ac knowledge an alarm clear the bit for that alarm Table 5 19 shows which bit corresponds to each alarm See Bit Wise Values on page 78 for information on reading or setting this parameter This parameter is available only for serial communications and LogicPro programs Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Alarm Enable Alarm Function Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Values Unacknowledged 1 or acknowledged 0 Modbus Address Loops 1 to 9 40511 to 40519 Parameter Number 30 LogicPro Driver Database LogicPro Address Loops 1 to 9 30 1 to 30 9 Enable or disable an alarm Table 5 18 shows the bit to set or read for each alarm This parameter is available only for serial communications and LogicPro programs See Bit Wise Values on page 78 for information on reading or set ting this parameter Values Disabled 0 or enabled 1 Default Disabled 0 Modbus Address Loops 1 to 9 40528 to 40536 Parameter Number 31 LogicPro Driver Database LogicPro Address Loops 1 to 9 31 1 to 31 9 Table 5 18 Bit Positions for Alarm Enable and Alarm Function Alarm Bit Low Deviation Alarm Third High Deviation Alarm Fourth Alarm Low Fifth Alarm High Sixth Choose whether an al
66. from varying unrealistically When enabled the process variable responds to a step change by going to two thirds of the actual value within the specified number of scans One scan is 0 17 seconds for a CPC404 and 0 33 seconds for a CPC408 Values 0 off to 255 Default 3 Modbus Address Loops 1 to 9 44409 to 44417 Parameter Number 84 LogicPro Driver Database LogicPro Address Loops 1 to 9 84 1 to 84 9 Use the Channel menu to name and select the feedback for the loop Enter a two character name for the loop This name is shown on the controller display in place of the loop number Values See Table 5 10 Default The loop number 01 02 03 and so on Modbus Address 45309 and 45310 for loop 1 45311 and 45312 for loop 2 and so on Parameter Number 132 LogicPro Driver Database LogicPro Address 132 1 and 132 2 for loop 1 132 3 and 132 4 for loop 2 and so on Watlow Anafaze 109 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Table 5 10 Characters for the Loop Name and Input Units Parameters Character Display Values ASCII Values AtoZ A to z 65 to 90 0to9 A toa 48 to 57 Degree symbol 5 223 Percent sign i 37 Forward slash A 47 Space 32 Pound sign E 35 PV Source Loor mocess uns Select whether an analog input or a soft integer is used for i SOuUPoe E the channel s feedback When it is desirable to control based on a value that is set by logi
67. integers menu contains 1 100 user definable 16 to bit word registers Use these parameters to read and set in teger data AAN SEON Sas o Read and write access are available through a logic pro gram WatView HMI software the controller display or a third party host Soft Integer Value Loop Process UNITS Read or set an integer value For example suppose that ft int 1 p you use serial communications to retrieve the input tem perature from four different inputs and you have a pro gram that calculates the average input temperature You could write the average input temperature to one of the Soft int parameters so that the operator could read it Values 32768 to 32767 Default 0 Modbus Address Soft Integers 1 to 100 44883 to 44982 Modbus Address Soft Integers 101 to 1100 45496 to 46496 Parameter Number Soft Integers 1 to 100 126 Parameter Number Soft Integers 101 to 1100 140 LogicPro Driver Soft_Int LogicPro Address 1 to 1100 ALARM SETPOINT STATUS OUT NOTE The values of soft integers 81 to 100 are saved in jobs and the values of soft integers 1 to 80 and 101 to 1100 are not 130 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Soft Booleans Menu LOOP PROCESS UNITS ALARM SETPOINT STATUS Soft Boolean Value LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT NOTE I O Tests Menu LOOP PROCESS UNITS
68. mm Width 3 9 inches 99 mm Height 1 4 inches 36 mm Table 7 26 Power Supply with Mounting Bracket Length 8 1 inches 206 mm Width 3 9 inches 99 mm Height 1 4 inches 36 mm 0 7 inch 18 mm 3 9 inches 99 mm 6 9 inches 175 mm 8 1 inches with mounting bracket 206 mm 0 19 3 16 inch diameter 5 mm Figure 7 7 Power Supply Dimensions Bottom View Doc 0600 2900 2000 Watlow Anafaze 177 Chapter 7 Specifications CPC400 Series User s Guide Table 7 27 Power Supply Inputs and Outputs 120 240V ac at 0 75 A 50 60 Input Voltage Hz Output Voltage V1 5V dc at 4 A Output Voltage V2 15V dc at 1 2 A Dual DAC Specifications The Watlow Anafaze Dual DAC digital to analog convert er is an optional module for the CPC400 series controller The Dual DAC converts a distributed zero crossing DZC output signal to an analog process control signal Watlow Anafaze provides the following version of the Dual DAC e Ato 20 mA de e 60 to 5V de e Oto 10V de e Dual DAC Environmental Specifications Storage Temperature 20 to 60 C Operating Temperature 0 to 50 C Humidity 10 to 95 non condensing Table 7 28 Dual DAC Physical Specifications Weight 0 42 lb 0 19 kg L
69. none Set point 1587F Desired temperature at the inner thermocouple PEET S TM PE AAS ie As the input drops 10 F the output increases to karhi i ee Tit hl t feme LSE Pd i 100 perce nt Control Hi integral a Only proportional control is used Control Hi derivative 8 Only proportional control is used Table 3 11 Parameter Settings for the Secona ary Loop in the Cascade Example Menu Parameter Value Comment Cascade acade prim loop 1 Loop 1 is the primary loop ERA ee am sai When the primary loop s output is 0 percent the secondary loop s set point is 150 F PE A E sent When the primary loop output is 100 percent spac legs evra ai the secondary channel set point is 190 F 72 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup As the temperature in the middle of the tank loop 1 drops the output goes up proportionally and the set point of loop 2 goes up proportionally Thus heat is added to the system at the element even though the temperature near the ele ment may have been at the desired temperature With proportional control when loop 1 is at set point its output is 0 percent and the set point of loop 2 is equal to the desired temperature 150 F If the temperature of the loop 1 drops below 149 F the deviation results in a propor tional output of 10 percent This results in an increase to the set point for loop 2 equal to 10 percent of the
70. not originate with the host The data changed register contains the parameter number of the oldest change in the change queue After the host reads the register the second oldest parameter number is loaded and so on When there are no remaining changes to be read the register contains FF hexadecimal This parameter is available only for serial communications and LogicPro programs Values 1 to 255 Modbus Address 40791 Parameter Number 50 LogicPro Driver Database LogicPro Address 50 1 Indicates whether the flash memory chip contains stan dard or custom Watlow Anafaze firmware for the closed loop control program If a logic program is loaded onto the flash memory chip it has no effect on this parameter This parameter is available only for serial communications and LogicPro programs Values 0 indicates standard firmware any other value in dicates custom firmware Modbus Address 40847 Parameter Number 52 LogicPro Driver Database LogicPro Address 52 1 For serial communications and LogicPro programs you can retrieve the firmware version in three parts major part minor part and revision letter Watlow Anafaze 135 Chapter 5 Menu and Parameter Reference Major Part Minor Part Revision Letter Full Scale Calibration System Status 136 CPC400 Series User s Guide Indicates the firmware version number to the left of the decimal point such as 1 for version 1 07A Modbus Address
71. other control parameters e Manual The operator sets the output power level e Tune The controller calculates the best PID settings for optimum control For more information see Auto tuning on page 62 This mode has no effect with on off control e Adapt The controller automatically adjusts the out put power as with Auto mode and it updates the con trol parameters as needed to keep the tuning optimized This mode has no effect with on off control To change the control mode and output power level start at the loop display and do the following 1 Press to choose the appropriate loop 2 Press twice The Mode parameter should appear If nothing happens the keypad may be locked see Key pad Lock on page 101 NOTE If the heat and cool outputs are disabled on this loop the Mode parameter is not available In stead this message appears LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Press or to choose a control mode Press to save the new value or press to cancel the change 5 Ifyou chose manual mode then the next parameter is the Heat output or Cool output parameter Use these parameters to set the heat and cool output power lev els then press to save 6 You should be back at the loop display The control mode is shown on the second line of the loop display see Table 3 1 on page 50 Doc 0600 2900 2000 Watlow Anafaze 55 Chapter 3 Operation and Setup CPC400 Series Us
72. output or disable the alarm i Values See Table 5 16 a a A TIC Default off Modbus and LogicPro See Alarm Acknowledge on page 132 and Alarm Function on page 133 Table 5 16 Alarm Functions Value Description aff No alarm function Alarm is indicated and logged Latching global alarm is activated ndard Alarm must be acknowledged to clear Optional non latching alarm output is acti vated Alarm message on controller display only Alarm does not require acknowledgement Non latching alarm output is activated Use the alarm set points to control this output for boost control Alarm High Output Looe PROCESS UNITS Choose a digital output to activate when the high alarm oc hich i curs You cannot choose an output that is in use for closed loop control or for the Serial DAC clock ARH SPORT SAS oT Values none 0 or output 1 to 34 1 to 34 Values in pa rentheses are for serial communications and LogicPro Default none 0 Modbus Address Loops 1 to 9 40426 to 40434 Parameter Number 25 LogicPro Driver Database LogicPro Address Loops 1 to 9 25 1 to 25 9 High Deviation Value Toop PROGESS UNITS Enter the amount by which the process variable must rise ii H above the set point for the high deviation alarm to occur For more information see Deviation Alarms on page 66 ALAR SPORT STARS OUT Values See Table 5 13 on page 113 for valu
73. power is on but the temper ature does not rise as expected If a thermocouple short is detected the controller puts the loop in manual mode at the output power level specified by the Sensor fail heat output or Sensor fail cool output param eter in the Output menu Values enabled by D I1 to enabled by D I8 1 to 8 or dis abled 0 Values in parentheses are for serial communica tions and LogicPro Default disabled 0 Modbus Address 44842 Parameter Number 117 LogicPro Driver Database LogicPro Address 117 1 Choose the communications address for this controller On an EIA TIA 485 communication loop each controller must have a unique address Begin with address 1 for the first controller and assign each subsequent controller the next higher address Values 1 to 247 Default 1 Modbus Address 44843 Parameter Number 118 LogicPro Driver Database LogicPro Address 118 1 Watlow Anafaze 101 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Communications Baud Rate Loop PROCESS UNITS Choose the baud rate for serial communications Choose i the same baud rate for both the controller and the HMI software or operator interface panel AAR SETPOINT STATS our Values 2400 1 9600 0 or 19200 2 Values in parenthe ses are for serial communications and LogicPro Default 19200 2 Modbus Address 44844 Parameter Number 119 LogicPro Driver Database LogicPro Address 119 1
74. process alarms RTD see failed sensor alarms SCRs 34 setting up 63 67 solid state relays 34 status through logic programs 134 status through serial communications 134 system see system alarms thermocouple see failed sensor alarms troubleshooting 141 143 wiring 34 Alarms menu 121 125 ambient temperature Ambient Sensor Reading parameter 134 H W failure Ambient alarm 146 147 operating range 13 Ambient warning 146 Analog Input 134 analog inputs see sensor inputs analog output 89 see also Dual DAC or Serial DAC auto message on loop display 50 Doc 0600 2900 2000 Index automatic mode Mode parameter 92 restoring after failed sensor repair 65 setting 55 autotuning 55 62 63 92 B battery Battery dead alarm 53 145 shelf life 7 baud rate 102 BCD job load logic parameter 98 BCD job load parameter 97 bits 78 Bit Wise Values 78 Booleans soft 131 boost output 66 122 bridge circuit 30 C cables communications 8 44 SCSI 7 8 tie wrapping 32 troubleshooting 153 Calculating checksum 26 Calibration offset parameter 105 cascade control 69 73 application example 71 parameters 127 128 setting up 71 Cascade hi SP parameter 128 Cascade low SP parameter 127 Cascade menu 127 128 Cascade prim loop parameter 127 case removing 155 CE see agency compliance Celsius 105 Channel menu 109 checksum 26 103 Cl retrans HighPV parameter 126 Cl retrans LowPV parameter 126 C1 SDAC hi signal parameter 118 Cl SDAC low signal
75. rate of information transfer in serial commu nications measured in bits per second BCD Binary coded decimal For BCD job loading the binary states of three digital inputs are decoded as decimal numbers 1 to 8 Bumpless Transfer A smooth transition from automatic closed loop to manual open loop operation The control out put does not change during the transfer C Calibration The comparison of a measuring device an unknown against an equal or better standard Celsius A temperature scale in which water freezes at 0 C and boils at 100 C at standard atmospheric pressure The formula for conversion to the Fahr enheit scale is F 1 8 x C 32 Formerly known as Centigrade Central Processing Unit CPU The unit of a computing system that includes the circuits controlling the interpretation of instruc tions and their execution Watlow Anafaze 195 Glossary Circuit Any closed path for electrical current A configu ration of electrically or electromagnetically con nected components or devices Closed Loop A control system that uses a sensor to measure a process variable and makes decisions based on that feedback Cold Junction Connection point between thermocouple metals and the electronic instrument Common Mode Rejection Ratio The ability of an instrument to reject electrical noise with relation to ground from a common voltage Usually expressed in decibels dB Communications The us
76. s alarm acknowledge parameter by ANDing it with a word that is all zeros except the fourth bit 0000 0000 0000 1000 or 8 in decimal If the result of the calculation is 0 the fourth bit was not set Ifthe result of the calculation is 8 the bit was set 0000 0000 00111100 60 decimal channel s alarm ac knowledge parameter value AND 0000 0000 0000 1000 8 decimal mask for the fourth bit is 0000 000000001000 8 decimal The resulting value in dicates that the bit was set To set a bit use the CALC function block s OR operator and the appropriate mask word to change the value of the word For example to enable the low deviation alarm for a channel you must set the third bit of that channel s alarm enable parameter 0000 000111111000 504 decimal channel s alarm en able parameter value OR 0000 0000 00000100 4 decimal mask for the third bit is 0000000011111100 508 decimal The new value is un changed except for the third bit To clear a bit use the CALC function block s AND opera tor and an inverse mask For example to set the alarm function for a channel s low deviation alarm to boost you must clear the third bit of that channel s alarm function pa rameter 0000 0000 00001100 12 decimal channel s alarm func tion parameter value AND 11111111 11111011 65 531 decimal the inverse mask for the third bit is 0000 0000 0000 1000 8 decimal The new value is un changed except for the
77. series controllers TB50 terminal board Dual DAC module Serial DAC module and the CPC400 power supply CPC400 System Specifications This section contains CPC400 series controller specifica tions for environmental specifications and physical dimen sions inputs outputs the serial interface and system power requirements The controller consists of a processor module with a 50 ter minal block TB50 or a processor module with an 18 termi nal block TB18 Table 7 1 Agency Approvals Compliance betes Electromagnetic Compatibility EMC CE Directive Directive 89 336 EEC UL 916 Standard for Energy Manage UL and C UL ment Equipment File E177240 CPC400 Physical Specifications Table 7 2 Environmental Specifications Storage Temperature 20 to 60 C Operating Temperature 0 to 50 C Humidity 10 to 95 non condensing The controller is for indoor Environment use only Doc 0600 2900 2000 Watlow Anafaze 165 CPC400 Series User s Guide Chapter 7 Specifications Table 7 3 Physical Dimensions Weight 1 98 Ibs 0 9 kg Length 8 0 inches 203 mm Width 3 78 inches 96 mm Height 1 96 inches 50 mm Without SCSI connector or with TB18 option CPC400 Module Dimensions Figure 7 1 Table 7 4 CPC400 with Straight SCSI Length 9 6 inches 244 mm Width 3 78 inches 96 mm Height 1 96 inches 50 mm 166 Watlow Anafaze Doc 0600 2900 2000
78. set point range In this case the range is 40 F 190 150 F 40 F and 10 percent of 40 F is 4 F So when the temperature at loop 1 drops 1 F the set point of loop 2 increases by 4 F until the output of loop 1 is 100 percent and the set point of loop 2 is 190 F At this point further decreases of the loop 1 process variable have no ad ditional affect on loop 2 Figure 3 12 illustrates this rela tionship O O S eo a E E EEES gt Se T 1 Q i 5 o Bo 170 F 3 55 29 150 F4 ou o amp 0 50 100 D Heat Output of Primary Loop o Percent of Full Scale 1 80 F 145 F 140 F Process Variable of Primary Loop F Figure 3 12 Relationship of Secondary Loop Set Point to Primary Loop Process Variable in Cascade Example Setting Up Ratio Control Doc 0600 2900 2000 Ratio control allows the process variable of one loop mas ter loop multiplied by a ratio to be the set point of another loop ratio loop You can assign any process variable to de termine the set point of a ratio loop By adjusting the ratio control parameters you can adjust the influence that the master loop process variable has on the set point of the ratio loop Watlow Anafaze 73 Chapter 3 Operation and Setup CPC400 Series User s Guide High SP Ratio Loop Set Point Low SP SP Differential Input Range Input Range Low High Master Loop Process Variable SP Set Point PV
79. than the global alarm are non latching See Global Alarm on page 67 e Alarms can be suppressed during process start up and for preprogrammed durations See Power Up Alarm Delay on page 100 e Alarm outputs can be configured as a group to sink to output during an alarm or stop current flow during an alarm See Digital Output Alarm Polarity on page 103 Control and Alarm Output Connections NOTE 34 Typically control and alarm outputs use external optically isolated solid state relays SSRs SSRs accept a 3 to 32V dc input for control and some can switch up to 100 Amps at 480V ac For larger currents use silicon control recti fier SCR power controllers up to 1000 Amps at 120 to 600V ac You can also use SCRs and a Serial DAC for phase angle fired control The 34 control and alarm outputs are open collector out puts referenced in the CPC400 s common Each output sinks up to 60 mAdc to the controller common when on Control outputs are sink outputs They sink cur rent when the output is on Connect them to the negative side of solid state relays Figure 2 22 shows sample heat cool and alarm output con nections Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide CPU Watchdog Timer Doc 0600 2900 2000 Alarm Output Alarm Output A Chapter 2 Installation Solid State Solid State Solid State TB50 or TB18 Relay Relay Relay ae as F R Heat Out
80. the conveyor moves You want to measure conveyor speed in feet per minute FPM Setup The encoder input is connected to the pulse input loop 5 on a CPC404 loop 9 on a CPC408 On that loop set the Input type parameter to pulse Set the Input pulse sample parameter to 1 sec because a one second sample time gives adequate resolution of the conveyor speed The resolution is 0 006 feet per minute 1 pulse 60 seconds 1 inch 1 foot _ 7 second 1 minute 900 pulses 12 inches 2 006 FPM Since the resolution is in thousandths the Disp format pa rameter is set to 9 999to 30 000 To determine the settings for the Input low range and Input high range parameters calculate the process variable val ues when the input signal is 0 Hz and 2000 Hz You could calculate the values at other frequencies e At 0 Hz the process variable is 0 000 FPM e At 2000 Hz the process variable is 11 111 FPM Doc 0600 2900 2000 Watlow Anafaze 61 Chapter 3 Operation and Setup CPC400 Series User s Guide 2000 pulses 60 seconds 1 inch 1 foot 1 second 1 minute 900 pulses 12 inches Tee Table 3 8 Scaling Values Parameter Value Tengt manaa eek 14 44 grim ATIRAR PP EiT Pik lari bien bid ri Tempe goh eed me eee om E ATILA ER PELE mg bsik Fermi Tarn emerald ANET LOW Signi Autotuning Autotuning with TRU TUNE adaptive control is a pro cess by which the CPC400 controller calculates the PID pa r
81. the process variable falls below this value the output will stay at 0 percent ALAR SERONT STATUS o Values Any value within the input sensor range see Table 5 7 on page 104 Default The minimum value in the input sensor range Modbus Address Loops 1 to 9 44546 to 44554 heat or 44563 to 44571 cool Parameter Number 93 heat or 94 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 93 1 to 93 9 heat or 94 1 to 94 9 cool Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Heat Cool Retransmit High Process Variable Loo process UNITS Enter the value of the process variable to retransmit as a i51 Hi t 100 percent output signal If the process variable rises above this value the output will stay at 100 percent AAN SONT STATUS OUT Values Any value within the input sensor range see Table 5 7 on page 104 Default The maximum value in the input sensor range Modbus Address Loops 1 to 9 44512 to 44520 heat or 44529 to 44537 cool Parameter Number 91 heat or 92 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 91 1 to 91 9 heat or 92 1 to 92 9 cool Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 126 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Cascade Menu LOOP PROCESS UNITS ALARM SETPOINT STATUS Cascade Primary Loop
82. the push or pressure behind current flow through a circuit One volt V is the difference in potential required to move one coulomb of charge between two points in a circuit consuming one joule of energy In other words one volt V is equal to one ampere of cur rent I flowing through one ohm of resistance R or V IR Z Zero Cross Action that provides output switching only at or near the zero voltage crossing points of the ac sine wave Doc 0600 2900 2000 CPC400 Series User s Guide Index A AC line freq parameter 102 adaptive control 3 50 55 57 62 93 114 115 address field Modbus 186 agency compliance controller 165 power supply 176 Serial DAC 181 AH alarm code 52 AL alarm code 52 Alarm Acknowledge parameter 132 Alarm delay parameter 125 Alarm Enable parameter 133 Alarm Function parameter 133 Alarm high func parameter 122 Alarm high output parameter 122 Alarm high SP parameter 66 121 Alarm hysteresis parameter 124 Alarm low func parameter 124 Alarm low output parameter 124 Alarm low SP parameter 66 124 Alarm Status parameter 134 alarms acknowledging 52 132 alarm high see process alarms alarm low see process alarms boost output 122 codes 51 52 deadband see alarms hysteresis delaying 100 125 deviation see process alarms digital output polarity 103 enabling 122 133 failed sensor see failed sensor alarms functions 122 global alarm output 67 hysteresis 66 124 messages 52 process see
83. to 10 mA dc 44 0 to 20 mA dc or 4 to 20 mA dc 50 0 to 100 mV dc 52 0 to 500 mV dc 53 0 to 1 V dc 55 0 to 5 V dc 56 0 to 10 V dc 57 0 to 12 V dc Start Loop XX Loop number XX End Loop XX Loop number XX Figure 1 2 _CPC400 Special Inputs Parts List Technical Description CPC400 This section contains a technical description of each compo nent of the CPC400 series controller The CPC400 is housed in a 1 8 DIN panel mount package It contains the central processing unit CPU random ac cess memory RAM with a built in battery flash memory serial communications digital I O analog inputs display and touch keypad CPC400 Series with SCSI Connector CPC400 Series with TB18 Connector Figure 1 3 CPC400 Rear Views Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Front Panel Description Doc 0600 2900 2000 Chapter 1 System Overview The CPC400 has the following features e Keypad and two line 16 character display e Screw terminals for the power and analog inputs and communications e Input power of 12 to 24 V dc at 1 Amp e 50 pin SCSI cable to connect the digital inputs and outputs to the 50 terminal block TB50 The CPC400 is available with an 18 terminal block TB18 in place of the SCSI connector as shown in Figure 1 3 on page 6 e Nonvolatile flash memory for storage of firmware and programmable logic e B
84. to 8 9 Cool Output Type 40154 to 40162 9 Database 16 9 1 to 9 9 Heat Cycle Time 40683 to 40691 42 Database 16 42 1 to 42 9 Cool Cycle Time 40700 to 40708 43 Database 16 43 1 to 43 9 Heat SDAC Signal 44307 to 44315 78 Database 16 78 1 to 78 9 Cool SDAC Signal 44324 to 44332 79 Database 16 79 1 to 79 9 Heat SDAC Low Signal 44341 to 44349 80 Database 16 80 1 to 80 9 Cool SDAC Low Signal 44358 to 44366 81 Database 16 81 1 to 81 9 Heat SDAC High Signal 44375 to 44383 82 Database 16 82 1 to 82 9 Cool SDAC High Signal 44392 to 44400 83 Database 16 83 1 to 83 9 Heat Action 40171 to 40179 10 Database 16 10 1 to 10 9 Cool Action 40188 to 40196 11 Database 16 11 1 to 11 9 Heat Power Limit 44171 to 44179 70 Database 16 70 1 to 70 9 Cool Power Limit 44188 to 44196 71 Database 16 71 1 to 71 9 Heat Power Limit Time 44205 to 44213 72 Database 16 72 1 to 72 9 Cool Power Limit Time 44222 to 44230 73 Database 16 73 1 to 73 9 a Pallineat 44239 to 44247 74 Database 16 74 1t074 9 ae Fall pool 44256 to 44264 75 Database 16 75 1 to 75 9 Host Olen Averzoe second 86 Database 16 86 1 10869 sa ogee ae pts i 86 Database 16 86 1 to 86 9 Heat Output Curve 44273 to 44281 76 Database 16 76 1 to 76 9 Cool Output Curve 44290 to 44298 77 Database 16 77 1 to 77 9 Doc 0600 2900 2000 Watlow Anafaze 211 Parameter Reference 212 CPC400 Series User s Guide Parameter L
85. to Acknowledge an Alarm To acknowledge a process alarm or failed sensor alarm press 4 If there are other loops with alarm conditions the alarm display switches to the next loop that has an alarm Acknowledge all alarms to clear the global alarm digital output The keypad and display will not work for anything else un til you acknowledge each alarm The alarm code or mes sage persists as long as the alarm condition exists System Alarm Messages 52 If a system alarm occurs the alarm message replaces the entire display The message persists until the condition is corrected Table 3 3 describes system alarm messages For more in formation see the Troubleshooting and Reconfiguring chapter Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup Table 3 3 System Alarm Messages Message Description The power supply has failed See Low Power on page 145 The RAM battery in the CPC400 is not functioning correctly and stored data has been corrupted See Battery Dead on page 145 Lihi f Ti gpeg t Pie RL podi Liar iS a Qed amt PHHEJ 2 SP gb The temperature around the controller is outside of the acceptable range of 0 to 50 C See f the controller has failed it may have been damaged by excessive voltage Before replacing the controller troubleshoot for high ac voltage on sensors or outputs See Checking Analog Inputs on page 148 on page 146
86. to eighth bit 40787 ninth to sixteenth bit Parameter Number 48 LogicPro Driver Database LogicPro Address 48 1 first to eighth bit 48 2 ninth to sixteenth bit Table 5 20 System Status Bits Parameter Description Values Bit Indicates whether the values in RAM d Necconitetiondetecied Battery Status have been corrupted while the power p First 1 Data corrupted has been off Indicates whether the ambient tem perature is within the controller s oper 0 Within range Ambient Status ating range If the ambient is out of i 9 Fourth 1 Outside of range range the controller sets all loops to manual mode at 0 percent power Indicates whether the zero self cali 0 In calibration Zero Status bration measurement falls within ee Sixth ae 1 Out of calibration acceptable limits Indicates whether the full scale self 0 In calibration Full Scale Status calibration measurement falls within f aie Seventh ate 1 Out of calibration acceptable limits Power Up Alarm are wheiner the powe up alarm 0 Delay feature not active Delay Status delay feature is presently active See 1 Delay feature active Ninth Power Up Alarm Delay on page 100 Zero Calibration Doc 0600 2900 2000 This read only parameter indicates the signal level detect ed when the controller measures its zero reference voltage in performing its self calibration If the value drifts out of specified limits the controller places all
87. under this warranty shall be to repair or replace at its option and without cost to the Customer the defec tive product or part Upon request by Watlow Anafaze Incorporated the product or part claimed to be defective shall immediately be returned at the Customer s expense to Watlow Anafaze Incorporated Replaced or repaired products or parts will be shipped to the Customer at the expense of Watlow Anafaze Incorporated There shall be no warranty or liability for any products or parts that have been sub ject to misuse accident negligence failure of electric power or modification by the Customer without the written approval of Watlow Anafaze Incorporated Final deter mination of warranty eligibility shall be made by Watlow Anafaze Incorporated If a warranty claim is considered invalid for any reason the Customer will be charged for services performed and expenses incurred by Watlow Anafaze Incorporated in han dling and shipping the returned unit If replacement parts are supplied or repairs made during the original warranty period the warranty period for the replacement or repaired part shall terminate with the termination of the warranty period of the original product or part The foregoing warranty constitutes the sole liability of Watlow Anafaze Incorporated and the Customer s sole remedy with respect to the products It is in lieu of all other warranties liabilities and remedies Except as thus provided Watlow Anafaze Inc
88. 0 off to 6000 seconds per repeat AAN SEON SAUS oU Default For the Heat integral parameter 180 or 0 for a pulse input For the Cool integral parameter 60 or 0 for a pulse input Modbus Address Loops 1 to 9 40035 to 400483 heat or 40052 to 40060 cool Parameter Number 2 heat or 3 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 2 1 to 2 9 heat or 3 1 to 3 9 cool Heat Cool Derivative Looe POGESS UNITS Enter the derivative constant A larger value yields greater ae ie derivative action Values 0 to 255 seconds AAN SON STATIS OE Default 0 Modbus Address Loops 1 to 9 40069 to 40077 heat or 40086 to 40094 cool Parameter Number 4 heat or 5 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 4 1 to 4 9 heat or 5 1 to 5 9 cool Heat Cool Manual Reset ToP PROCESS UNS A process that uses only proportional control settles at a i point above or below the set point it never reaches the set point This is known as offset or droop At this parameter enter the power level required to maintain set point to com pensate for this offset Values 0 to 100 0 to 1000 Values in parentheses are for serial communications and LogicPro Default 0 0 Modbus Address Loops 1 to 9 45274 to 45282 heat or 45291 to 45299 cool Parameter Number 129 heat or 130 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 129 1 to 129 9 heat
89. 0 to 2099 125 3100 to 3199 180 1000 to 1099 70 2100 to 2199 130 3200 to 3299 185 As a general rule set the proportional band to ten percent of the set point below 1000 and five percent of the set point above 1000 This setting is useful as a starting value Tepe e 100 to 99 20 100 to 199 20 200 to 299 30 300 to 399 35 400 to 499 40 500 to 599 45 600 to 699 50 Integral Settings The controller s integral parameter is set in seconds per re peat Some other products use an integral term called re set in units of repeats per minute Table 4 2 shows integral settings versus reset settings Doc 0600 2900 2000 Watlow Anafaze 85 Chapter 4 Tuning and Control CPC400 Series User s Guide Table 4 2 Integral Term and Reset Settings Integral Reset Integral Reset Seconds Repeat Repeats Minute Seconds Repeat Repeats Minute 30 2 0 210 0 28 45 1 3 240 0 25 60 1 0 270 0 22 90 0 66 300 0 20 120 0 50 400 0 15 150 0 40 500 0 12 180 0 33 600 0 10 As a general rule use 60 120 180 or 240 as a starting val ue for the integral Derivative Settings 86 The controller s derivative parameter is programmed in seconds Some other products use a derivative term called rate programmed in minutes Use the table or the formula to convert parameters from one form to the other Table 4 3 shows derivative versus rate Rat
90. 00 CPC400 Series User s Guide Parameter Reference Parameter Address Reference Use this section to quickly locate addresses for interface software and logic programs Parameter LogicPro Size LogicPro parameter Modbus Address Number Driver bits Address Operator Parameters page 92 Set point 40205 to 40213 12 Setpoint 16 1to9 Mode 40120 to 40128 7 Database 16 7 1 to 7 9 Heat Output 40273 to 40281 16 Database 16 16 1 to 16 9 Cool Output 40290 to 40298 17 Database 16 17 1 to 17 9 Process Variable 40222 to 40230 13 CPC400_PV 16 1to9 Global setup page 96 Load setup from job 44836 111 Database 16 111 1 Save Setup as job 44835 110 Database 16 110 1 BCD Job Load 44837 112 Database 16 112 1 BCD Job Load Logic 44838 113 Database 16 113 1 Mode Override 44839 114 Database 16 114 1 Mode verde Digital 44840 115 Database 16 115 1 Input Active Logic Program 49481 150 Database 16 150 1 Power Operam 40409 24 Database 16 24 1 Delay Power Up Loop Mode 49790 first bit 49 Database 16 49 1 first bit Power Up With Logic 45308 131 Database 16 131 1 Keypad Lock 40790 second bit 49 Database 16 49 1 second bit Thermocouple Short 44842 117 Database 16 117 1 Alarm Controller Address 44843 118 Database 16 118 1 Communications 44844 119 Database 16 119 1 Baud Rate Commuunicalians 44847 122 Database 16 122 1 Parity AC Line Frequency 40790 third bit 49 Database 16
91. 19 41 Output 17 Loop 8 cool 42 Output 18 Pulse loop cool 43 Input 1 44 Input 2 45 Input 3 46 Input 4 47 Input 5 48 Input 6 49 Input 7 50 Input 8 1 The indicated outputs are dedicated for control when enabled in the loop setup If one or both of a loop s outputs are disabled the corre sponding digital outputs become available for alarms or programmable logic 2 if you install a Watlow Anafaze Serial DAC the CPC400 uses digital output 34 terminal 10 for a clock line You cannot use output 34 for anything else if a Serial DAC is installed 38 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Analog Outputs Wiring the Dual DAC Doc 0600 2900 2000 Chapter 2 Installation Analog outputs can be provided by using a Dual DAC or Se rial DAC module to convert the open collector outputs from the controller Use multicolored stranded shielded cable for analog outputs Analog outputs generally use a twisted pair wiring The following sections describe how to connect the Dual DAC and Serial DAC modules to power the con troller outputs and the load A Dual DAC module includes two identical circuits Each can convert a distributed zero cross DZC signal from the controller to a voltage or current signal Watlow Anafaze strongly recommends using a power supply separate from the controller supply to power the Dual DAC Using a sep arate power supply isolates the controller s digital logic cir cuits and analog measurement
92. 20 240 V ac H black Supply green 77 GD If using 5V dc for outputs jumper 5V common to 15V common Connect terminals to ac panel ground Figure 2 13 Power Connections with the CPC400 Power Supply Doc 0600 2900 2000 Watlow Anafaze 25 Chapter 2 Installation CPC400 Series User s Guide Connecting the TB50 to the CPC400 Testing the System TB50 or TB18 Test Digital Output Test 26 NOTE 1 Connect the SCSI cable to the controller 2 Connect the SCSI cable to the TB50 This section explains how to test the controller after instal lation and prior to making field wiring connections Use this procedure to verify that the TB50 or TB18 is prop erly connected and supplied with power 1 Turn on power to the CPC400 The display should first show Calculating checksum and then show the single loop display If you do not see these displays discon nect power and check wiring and power supply output 2 Measure the 5V dc supply at the TB50 or TB18 a Connect the voltmeter s common lead to TB50 ter minal 3 or TB18 terminal 2 b Connect the voltmeter s positive lead to TB50 or TB18 terminal 1 The voltage should be 4 75 to 5 25V de Use this procedure to test the controller outputs before loads are connected If using it at another time for trouble shooting disconnect loads from outputs before testing 1 Connect a 500 to 100 kQ resistor between TB50 or TB18 terminal 1 and a digi
93. 47 locking 101 navigation 49 testing 132 unlocking 101 Keypad lock parameter 101 Keypad test parameter 132 L LD alarm code 52 limit controller 9 limit output 118 119 listen only mode 192 Load setup from job parameter 96 Load setup not available 96 locking the keypad 101 LoDeviation func parameter 123 LoDeviation output parameter 123 LoDeviation value parameter 66 123 logic program closed loop firmware checksum 103 does notrun 144 specifications 173 status 99 upon powerup 100 Logic program parameter 99 Loop Name 109 loop name on loop display 50 Doc 0600 2900 2000 CPC400 Series User s Guide loops autotuning see autotuning closed loop control 57 62 display information 50 number available 172 tuning 85 87 low deviation alarm see process alarms Low power alarm 53 145 man message on loop display 50 manual mode during a failed sensor alarm 119 during a mode override 119 during a thermocouple open alarm 120 if ambient temperature is out of range 137 Mode parameter 92 setting 55 manual reset 112 manual tuning 85 menus accessing 56 Alarms 121 125 Cascade 127 128 Channel 109 Control 111 115 Global setup 96 103 T O tests 131 132 Input 104 109 map of 95 216 navigating 56 Output 116 121 PV retrans 125 126 Ratio 128 130 Soft Booleans 131 Soft integers 130 message framing 185 messages counting 192 Modbus 183 194 address field 186 addresses 96 137 ASCII and RTU modes 185 CRC checking 189 data fie
94. 50 F differential to the central heaters For example if the set point for the center heaters is 325 F the set point of the outer heaters will be 375 F In this application the center heaters will be controlled by the master loop on loop 1 and the outer heaters will be controlled by the ratio loop on loop 2 To set up this application first set up the master loop loop 1 for PID control with a set point of 325 F Then for the ra tio loop loop 2 set the parameters in the Ratio menu as shown in Table 3 13 Table 3 13 Parameter Settings for the Ratio Loop Loop 2 for the Example Menu Parameter Value Comment kati atio master loop i Loop 1 is the master loop Ba ie a ws The lowest allowable set point for the ratio t TPS ee eR loop For this example we ll use 300 0 _ ih ios Ne heey The highest allowable set point for the ratio a Sipe ere me loop For this example we ll use 400 0 ae mae 1 _ For differential control always set this parame Pam bb it Le ERP LIL Pome LLI bak ter to 1 0 Ra tis atio SP aif The set point differential or offset To complete the differential control setup loop 1 and loop 2 must be configured for inputs outputs and alarms Setting Up Remote Analog Set Point 76 Remote analog set point allows external equipment such as a PLC or other control system to change the set point of a loop Typically a voltage or current source is conn
95. 5V 40 kQ 0to1V 7 4kQ 0 to 500 mV 6 2 KQ 0 to 100 mV 1 2 KQ Table 7 17 Digital Inputs Number Configuration 8 8 selectable for output override remote job selection or programmable logic Input Voltage Protection Diodes to supply and common Source must limit current to 10 mA for overvoltage conditions Voltage Levels Maximum Switch Resistance to Pull Input Low 1kQ lt 1 3V Low gt 3 7V High TTL 5V maximum 0 V minimum Minimum Switch Off Resistance 11 KQ Response Time Outputs Analog Outputs 174 50 ms AC line frequency set to 60 Hz 60 ms AC line frequency set to 50 Hz The controller directly accommodates switched de and open collector outputs only These outputs can be used to control a wide variety of loads They are typically used to control solid state relays or other power switching devices which in turn devices such as heaters They may also be used to signal another device of an alarm condition in the controller Analog outputs may be accomplished by using Dual DAC or Serial DAC modules in conjunction with one of the control outputs An open collector CPU watchdog output is also provided so that an external device can monitor the CPU state No direct analog outputs are provided Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 7 Specifications The digital outputs may be used in conjunction with Dual DAC or Serial DAC module
96. 6 Doc 0600 2900 2000 Watlow Anafaze vii List of Figures CPC400 Series User s Guide viii Watlow Anafaze Doc 0600 2900 2000 List of Tables 2 Installation 11 Table 2 1 Cable Recommendations 21 Table 2 2 Power Connections 24 Table 2 3 Digital Output States and Values Stored in the Controller 33 Table 2 4 Digital Input States and Values Stored in the Controller 36 Table 2 5 TB18 Connections 37 Table 2 6 TB50 Connections 38 Table 2 7 EIA TIA 232 Connections 42 Table 2 82 RTS CTS and DSR DTR Pins in DB 9 and DB 25 Connectors 42 3 Operation and Setup 47 Table 3 1 Control Modes on the Loop Display 50 Table 3 2 Alarm Codes and Messages for Process and Failed Sensor Alarms 52 Table 3 32 System Alarm Messages 53 Table 3 4 Input Readings 60 Table 3 5 Scaling Values 60 Table 3 6 Input Readings and Calculations 61 Table 3 7 Scaling Values 61 Table 3 8 Scaling Values 62 Table 3 9 Parameters Settings for Process Variable Retransmit Example 69 Table 3 10 Parameter Settings for the Primary Loop in the Cascade Example 72 Table 3 11 Parameter Settings for the Secondary Loop in the Cascade Example 72 Table 3 12 Ratio Control Settings for the Ratio Loop Loop 2 in the Example 75 Table 3 13 Parameter Settings for the Ratio Loop Loop 2 for the Example 76 Table 3 14 Parameters Settings for the Master Loop Loop 1 in the Example 77 Table 3 15 Parameter Settings for the Ratio Loop Loop 2 in
97. 600 2900 2000 CPC400 Series User s Guide Doc 0600 2900 2000 Chapter 2 Installation Allow for an additional 0 60 to 1 60 in 15 to 41 mm beyond the connectors Temporarily cover any slots in the metal housing so that dirt metal filings and pieces of wire do not enter the housing and lodge in the electronics Cut a hole in the panel 1 80 in 46 mm by 3 63 in 92 mm as shown below Use caution the dimensions giv en here have 0 02 in 0 5 mm tolerances Remove the brackets and collar from the processor module if they are already in place Slide the processor module into the panel cutout Slide the mounting collar over the back of the proces sor module making sure the mounting screw indenta tions face toward the back of the processor module Bracket top and bottom lt Panel _ LF Hr ee D be ahii D g Pi Ee H D E m R aD H o Bezel Ts Mounting Collar Figure 2 4 Mounting Bracket Loosen the mounting bracket screws enough to allow for the mounting collar and panel thickness Place each mounting bracket into the mounting slots head of the screw facing the back of the processor module Push each bracket backward then to the side to secure it to the processor module case Make sure the case is seated properly Tighten the in stallation screws firmly
98. 73 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 72 1 to 72 9 heat or 73 1 to 73 9 cool Sensor Fail Heat Cool Output LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 A loop will switch to manual mode at the specified output power if one of the following conditions occurs while in au tomatic mode e A failed sensor alarm occurs or e The mode override input becomes active see Mode Override on page 99 For most applications this parameter should be set to 0 for both heat and cool outputs Values 0 to 100 0 to 1000 Values in parentheses are for serial communications and LogicPro Default 0 0 Modbus Address Loops 1 to 9 44239 to 44247 heat or 44256 to 44264 cool Parameter Number 74 heat or 75 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 74 1 to 74 9 heat or 75 1 to 75 9 cool Decimal Placement for Modbus or LogicPro See Dec imal Placement for Percentage Values on page 80 Watlow Anafaze 119 Chapter 5 Menu and Parameter Reference A CPC400 Series User s Guide WARNING Donot rely solely on the failed sensor alarm to ad just the output in the event of a sensor failure If the loop is in manual mode when a failed sensor alarm occurs the output is not adjusted Install in dependent external safety devices to shut down the system if a failure occurs Open Thermocouple Heat Cool Output Average
99. 73 to 40281 heat or 40290 to 40298 cool Parameter Number 16 heat or 17 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 16 1 to 16 9 heat or 17 1 to 17 9 cool Decimal Placement for Modbus or LogicPro See Dec imal Placement for Percentage Values on page 80 Indicates the value used for feedback after filtering and scaling This parameter is read only Values For thermocouples and RTD inputs same as the input range see Table 5 7 on page 104 For process and pulse inputs any value between the Input range low and Input range high parameters in the Input menu Modbus Address Loops 1 to 9 40222 to 40230 Parameter Number 13 LogicPro Driver CPC400_PV LogicPro Address Loops 1 to 9 1 to 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Watlow Anafaze 93 Chapter 5 Menu and Parameter Reference Overview of the Setup Menus The CPC400 has eleven setup menus Table 5 2 provides a brief description of each menu Figure 5 2 lists all of the menus and parameters in the same order that they appear in the controller CPC400 Series User s Guide Table 5 2 CPC400 Setup Menus Menu Description hie Global setup Configure global settings which affect all loops 96 Input Configure the input for each loop 104 Channel Configure each PV source and Channel Name 109 Control Configure PID control for each loop 111
100. 9999 to 3 0000 4 0 9999 3 0000 Input Range High LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Input High Signal LOOP PROCESS UNITS ALARM SETPOINT STATUS OUTS Doc 0600 2900 2000 For a process or pulse input enter the high process vari able for input scaling purposes This value will be displayed when the input signal is at the level set for Input high sig nal This parameter and the Input high signal parameter to gether define a point on the conversion line for the scaling function See Setting Up a Process or Pulse Input on page 58 Values Any value between Input range low and the maxi mum process variable for the selected display format see Table 5 9 Default 1000 Decimal placement depends upon the value of the Disp format parameter Modbus Address Loops 1 to 9 40581 to 40589 Parameter Number 36 LogicPro Driver Database LogicPro Address Loops 1 to 9 36 1 to 36 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 For a process or pulse input enter the input signal level that corresponds to the value for the Input range high pa rameter For a process input the high signal is a percent age of the full scale input range For a pulse input the high signal is expressed in Hertz Values For process inputs 99 8 to 999 9 998 to 9999 percent of full scale For pulse inputs 1 to 2000 1 to 2000 H
101. A TIA 232 interface is a standard three wire inter face Table 2 7 shows EIA TIA 232 connections for 25 pin and 9 pin connectors or cables that are supplied by the fac tory EIA TIA 232 may be used to connect a computer through a 232 to 485 converter to an EIA TIA 485 communications network with up to 32 CPC400 controllers Doc 0600 2900 2000 Watlow Anafaze 41 Chapter 2 Installation CPC400 Series User s Guide Table 2 7 EIA TIA 232 Connections Wire CPC400 DB 9 DB 25 Color TB1 Connector Connector White TX Pin 26 RX Pin 2 RX Pin 3 Red RX Pin 25 TX Pin 3 TX Pin 2 Black GND Pin 23 GND Pin 5 GND Pin 7 Green GND Pin 24 N U Pin 9 N U Pin 22 Shield N C GND Pin 5 GND Pin 7 Jumpers in EIA TIA 232 Connectors Some software programs and some operator interface ter minals require a clear to send CTS signal in response to their request to send RTS signal or a data set ready DSR in response to their data terminal ready DTR The CPC400 is not configured to receive or transmit these sig nals To use such software with the CPC400 jumper the RTS to the CTS and the DTR to the DSR in the DB connec tor Table 2 8 lists the standard pin assignments for DB 9 and DB 25 connectors Table 2 8 RTS CTS and DSR DTR Pins in DB 9 and DB 25 Connectors DB 9 DB 25 RTS 7 4 CTS 8 5 DTR 4 20 DSR 6 6 Cables manufactured by Watlow Anafaze for EIA TIA 232 communications i
102. ALARM SETPOINT STATUS Digital Inputs LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference The Soft Booleans menu contains 256 one bit Boolean reg isters Use these parameters to read and set Boolean true or false data Read and write access are available through a logic pro gram WatView the controller display or a third party host Read or set a true or false value Values 0 false or 1 true Default 0 Modbus Address Soft Boolean 1 to 256 44983 to 45238 Parameter Number 127 LogicPro Driver Soft_Bool LogicPro Address Soft Boolean 1 to 256 1 to 256 The values of soft Booleans 237 to 256 are saved in jobs the values of soft Booleans 1 to 236 are not Use the I O tests menu to test the following e Digital inputs e Digital outputs e Keypad This parameter indicates the states of the eight digital in puts A J indicates that the input is connected to controller common on A 0 indicates an open circuit off To test an input short it to controller common When the input is shorted its input state should be 1 For detailed in structions see Digital Input Test on page 27 The controller display shows the states of digital inputs 1 to 8 from left to right For serial communications and Log icPro programs read the state of one input at a time Values 0 if the input is off 1 if the input is on Modbus Address
103. CPC400 Series User s Guide Watlow Controls 1241 Bundy Blvd Winona MN 55987 Repairs and Returns 334 Westridge Drive Watsonville CA 95076 Customer Service Phone 1 800 414 4299 FAX bees 1 800 445 8992 Technical Support Phone 507 494 5656 FAX nonen 507 452 4507 Email wintechsupport watlow com Part No 0600 2900 2000 Rev 2 2 August 2005 Copyright 2005 Watlow Anafaze Incorporated Information in this manual is subject to change without notice No part of this publi cation may be reproduced stored in a retrieval system or transmitted in any form without written permission from Watlow Anafaze Anafaze is a registered trademark and LogicPro is a trademark of Watlow Electric Manufacturing Company Modbus is a trademark of Schneider Automation Incorpo rated Windows is a registered trademark of Microsoft Corporation in the United States and or other countries UL is a registered trademark of Underwriters Labora tories Inc All other trademarks are the property of their respective owners Warranty Watlow Anafaze Incorporated warrants that the products furnished under this Agree ment will be free from defects in material and workmanship for a period of three years from the date of shipment The Customer shall provide notice of any defect to Watlow Anafaze Incorporated within one week after the Customer s discovery of such defect The sole obligation and liability of Watlow Anafaze Incorporated
104. INT STATUS OUT Setup Menus LOOP PROCESS UNITS SETPOINT STATUS OUTH Operator Parameters PROCESS UNITS PROCESS UNITS PROCESS UNITS E an T I h i PROCESS UNITS Loop 461 Cool out LOOP i Y ALARM SETPOINT STATUS OUT Same Screen on the Next or Previous Loop LOOP PROCESS UNITS ALARM SETPOINT STATUS OUTH Figure 3 1 General Navigation Map 48 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Keypad Chapter 3 Operation and Setup warow COPC LOOP PROCESS UNITS i a Doc 0600 2900 2000 ALARM SETPOINT STATUS OUT ieee gt Y Description Access the setup menus press and hold for 3 seconds Cancel a change without saving Escape from a parameter to a top level setup menu Escape from a setup menu to the loop display or job display Acknowledge an alarm Toggle between the loop display and job display if a job is loaded Edit a parameter value Scroll through the top level setup menus Toggle between the loop display and job display if a job is loaded Edit a parameter value Scroll through the top level setup menus Clear RAM and set all parameters to defaults hold during power up Save a change and go to the previous parameter Access the operator parameters from the loop display Save a change and go to the next parameter Go to a
105. Loor process uns If you are using a logic program choose whether it should run automatically upon powerup of the controller Values stopped 0 or running 1 Values in parentheses AEAN SETON AT EE are for serial communications and LogicPro Default stopped 0 Modbus Address 45308 Parameter Number 131 LogicPro Driver Database LogicPro Address 131 1 100 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Keypad Lock LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Chapter 5 Menu and Parameter Reference Set this parameter to on to disable the key on the key pad This restricts access to the operator parameters from the controller keypad Values on 1 or off 0 Values in parentheses are for seri al communications and LogicPro and are stored as the sec ond bit of the system command word so set or read only that bit Default off 0 Modbus Address 40790 second bit Parameter Number 49 LogicPro Driver Database LogicPro Address 49 1 second bit Thermocouple Short Alarm LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Controller Address LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Choose a digital input to enable for thermocouple short de tection Install a device that connects the input to control ler common when the process power is on A thermocouple short is detected if the process
106. Modbus protocol supports two distinct serial transmis sion modes ASCII and RTU The mode determines how messages are framed and coded Typically ASCII is used for simple communication tasks or diagnostics while RTU is used where a more robust and efficient protocol is re quired The CPC400 supports Modbus RTU mode only In ASCII mode each character in a message string is com posed of a hexadecimal character which is correlated to an ASCII character For example an ASCII message string contains the value of a process variable 5500 550 0 de grees 5500 in an ASCII string is composed of 4 bytes 35 35 30 30 35 and 30 in hexadecimal equate to the characters 5 and 0 in the ASCII table respectively In RTU mode the actual value is embedded in a message string There is no translation to ASCII characters This re sults in more compact message strings and efficient serial communications The value 5500 in an RTU string is com posed of its hexadecimal equivalent which is only 2 bytes 15 7C Many host devices can communicate in either ASCII or RTU mode However it should be noted that some PLCs can only be an ASCII host Messages start with a silent interval of at least 3 5 charac ter times This is most easily implemented as a multiple of character times at the baud rate that is being used on the network shown as T1 T2 T3 T4 in Figure A 2 The first field then transmitted is the device address Networked controllers
107. OP PROCESS UNITS on es ALARM SETPOINT STATUS OUT Chapter 5 Menu and Parameter Reference e Alarm functions set points hysteresis and delay set tings e Soft integers 81 to 100 and soft Booleans 237 to 256 If you have enabled remote job selection see BCD Job Load on page 97 you will see the message below and you will not be able to use the controller keypad to save a job Loop PROCESS UNITS ALARM SETPOINT STATUS OUT Values 1 to 8 1 to 8 or none 0 Values in parentheses are for serial communications and LogicPro Default none 0 Modbus Address 44835 Parameter Number 110 LogicPro Driver Database LogicPro Address 110 1 Choose the digital input s to use for remote job selection The controller uses the states of the selected inputs as a bi nary code that specifies which job number to run see Table 5 3 To save jobs into memory use the Save setup as job param eter Values See Table 5 3 Default disabled 0 Modbus Address 44837 Parameter Number 112 LogicPro Driver Database LogicPro Address 112 1 Table 5 3 Values for BCD Job Load zee Togeere Description alue Value use OT 1 Use digital input 1 for remote selection of jobs 1 and 2 use DAI i 2 Use digital inputs 1 and 2 for remote selection of jobs 1 to 4 ize OT 1 3 Use digital inputs 1 to 3 for remote selection of jobs 1 to 8 disabled 0 Disable remote job selection
108. P PROCESS UNITS ALARM SETPOINT STATUS OUT Alarm High Set Point LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Actual Output PID Calculation Figure 5 4 Linear and Nonlinear Outputs Use the Alarms menu to configure high alarms low alarms and deviation alarms including e Alarm set points e Alarm outputs e Alarm behavior e Alarm hysteresis e Alarm delay Enter the set point at which the high alarm activates The high alarm activates if the process variable rises above this value For more information about the high alarm see Alarm High and Alarm Low on page 66 Values For a thermocouple or RTD input any value with in the input range see Table 5 7 on page 104 For a pro cess or pulse input any value between the Input range low and Input range high parameters Default 1000 Decimal placement depends upon the Input type and Disp format settings Modbus Address Loops 1 to 9 40307 to 40315 Parameter Number 18 LogicPro Driver Database LogicPro Address Loops 1 to 9 18 1 to 18 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Watlow Anafaze 121 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Alarm High Function oor PROCESS UNITS Choose whether the high alarm functions as an alarm or as ai i high a boost
109. P6 7 R46 RP7 8 R44 RP8 160 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 6 Troubleshooting and Reconfiguring RTD Inputs For each RTD input you must install three resistors RA RB and RC The resistance must be correct for the expect ed input range RA and RB are a matched pair of resistors Install them in the resistor pack RP locations as shown in the illustration below Resistor values e RA RB 25 KQ e RC 18 2Q Resistor tolerances e RA RB Matched to 0 02 5 ppm C with absolute tolerance of 0 1 25 ppm C e RC Accurate to 0 05 5ppm C RP el ge mu RA RB Table 6 7 Resistor Locations for RTD Inputs Resistor Locations Loop RA RB RC 1 RP1 R57 2 RP2 R55 3 RP3 R53 4 RP4 R51 5 RP5 R49 6 RP6 R47 7 RP7 R45 8 RP8 R43 Doc 0600 2900 2000 Watlow Anafaze 161 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide Scaling and Calibration The controller provides offset calibration for thermocouple RTD and other fixed ranges and offset and span gain cal ibration for process and pulse inputs In order to scale the input signal you must 1 Install appropriate scaling resistors Contact the Cus tomer Service Department at Watlow Anafaze for more information about installing scaling resistors 2 Enter the input range at the Disp format parameter in the Input menu The
110. PC400 Series User s Guide Input Units Loop PROCESS UNITS ALARM SETPOINT STATUS OUT Input Pulse Sample LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Calibration Offset LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference For a thermocouple or RTD input choose the temperature scale For a process or pulse input enter a three character description of the engineering units Values For a process or pulse input see Table 5 10 For a thermocouple or RTD input F or C When setting the units for a thermocouple or RTD input through serial com munications or LogicPro you must set the first character as a space 32 the second character as the degree symbol 223 and the third character as C 67 or F 70 Default F for a thermocouple or RTD input HZ for a pulse input three spaces for a process input Modbus Address 40792 40793 and 40794 for loop 1 40795 40796 and 40797 for loop 2 and so on Parameter Number 51 LogicPro Driver Database LogicPro Address 51 1 51 2 and 51 3 for loop 1 51 4 51 5 and 51 6 for loop 2 and so on For a pulse input enter the sample period over which puls es are counted Each sample period the controller divides the number of pulses by the sample time The controller scales the result and uses it as the process variable for the pulse loop Gen
111. Pro Programs page Doc 132 Alarm Acknowledge 40511 to 40519 30 Database 16 30 1 to 30 9 Alarm Enable 40528 to 40536 31 Database 16 31 1 to 31 9 Alarm Function 40494 to 40502 29 Database 16 29 1 to 29 9 Alarm Status 40392 to 40400 23 Database 16 23 1 to 23 9 Ambien Sensor 40579 34 Database 16 34 1 Reading Analog Input 45375 to 45383 135 Database 16 135 1 to 135 9 0600 2900 2000 Watlow Anafaze 213 Parameter Reference 214 CPC400 Series User s Guide Parameter LogicPro Size LogicPro Parameter Modbus Address Number Driver bits Address og Changed Regis 40791 50 Database 16 50 1 Firmware 40847 52 Database 16 52 1 Identification Firmware Version page 135 Major Part 40844 52 Database 16 52 2 Minor Part 40845 52 Database 16 52 3 Revision Letter 40846 52 Database 16 52 4 Full Scale Calibration 40718 45 Database 16 45 1 40786 48 1 first to first to eighth bit eighth bit System Status 40787 ninth to 48 Database 16 48 2 ninth to sixteenth bit sixteenth bit Zero Calibration 40717 44 Database 16 44 1 Watlow Anafaze Doc 0600 2900 2000 Declaration of Conformity CPC400 Series WATLOW ANAFAZE 314 Westridge Drive Watsonville California 95076 USA C Declares that the following product CPC400 Series 40 4 or 8 1 0 1 or 2 0 or 2 0 1 2 or 3 0 1 2 or 3 0 1 or 2 any letter or number
112. Process Variable Figure 3 13 Relationship Between the Process Variable on the Master Loop and the Set Point of the Ratio Loop NOTE Ratio control cannot be used on the same control loop as cascade control How to Set Up Ratio Control 1 Adjust and tune the master loop for optimal perfor mance before implementing the ratio setup 2 For the ratio loop set the parameters in the Ratio menu 3 Configure both the master loop and the ratio loop for inputs outputs and alarms Ratio Control Example Diluting KOH A chemical process requires a formula of two parts water H20 to one part potassium hydroxide KOH to produce diluted potassium hydroxide The desired flow of H30 is 10 gallons per second gps so the KOH should flow at 5 gps Separate pipes for each chemical feed a common pipe The flow rate of each feeder pipe is measured by a CPC400 with H20 flow measured on loop 1 and KOH flow measured on loop 2 The outputs of loops 1 and 2 adjust motorized valves 74 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup Water Input KOH Input Loop 1 Water Flow Control Loop Loop 2 KOH Flow Control Loop Loop 1 Input Flow le Process Variable Loop 1 PID Output Transducer Loop 2 Input CPC400 Process Variable Loop 2 PID Output Serial DAC Motorized Motorized Control Valve 2 Control Serial Valve 1 DAC Mixture Output
113. Q 5 When you see the prompt Clear RAM release and press Watlow Anafaze 153 Chapter 6 Troubleshooting and Reconfiguring 6 CPC400 Series User s Guide Restore the controller settings If you have a stand alone system you must manually re enter your original parameters If you have a computer su pervised system with WatView software you can save a copy of your parameters to a job file and then reload them into the controller Replacing the Flash Memory Chip This procedure requires a Phillips screwdriver and an IC extraction tool or jeweler s flathead screwdriver 154 A CAUTION NOTE The flash memory chip and other components are sensitive to damage from electrostatic discharge ESD To prevent ESD damage use an ESD wrist strap or other antistatic device Replacing the flash memory chip results in full erasure of RAM Make a record of all parameters before changing the flash memory chip 1 2 3 4 Make a record of controller parameters Switch off power to the controller Disconnect input power to the controller Remove the four screws from the sides of the controller front bezel Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 6 Troubleshooting and Reconfiguring 5 Remove the electronics assembly from the case as shown in Figure 6 1 Figure 6 1 Removal of Electronics Assembly from Case 6 Unscrew the four screws at the corners of the top
114. S Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Load Change High Tune Gain Process Variable More Aggressive a eae Tune Gain More Conservative Tunes Inside the a Band Time Figure 5 3 The Effect of Tune Gain on Recovery from a Load Change Enter the amount of overshoot reduction A larger value yields less overshoot Values 0 0 to 100 100 Default 50 50 Modbus Address Loops 1 to 9 46576 to 46584 Parameter Number 146 LogicPro Driver Database LogicPro Address Loops 1 to 9 146 1 to 146 9 Choose a control algorithm Table 5 14 Control Types Control Type Description Heat and cool outputs used to control PID1 Only one output may be on at atime PID2 Heat and cool outputs used to control Both outputs can be on at the same time Values PID1 0 or PID2 1 Default PID1 0 Modbus Address Loops 1 to 9 45480 to 45489 Parameter Number 139 LogicPro Driver Database LogicPro Address Loops 1 to 9 139 1 to 139 9 Watlow Anafaze 115 Chapter 5 Menu and Parameter Reference Output Menu Loop PROCESS UNITS ALARM SETPOINT STATUS OUT Heat Cool Output Type LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT CPC400 Series User s Guide Use the Output menu to enable and configure heat and cool outputs Choose the output type or disable the heat or cool output For more informa
115. against the mounting collar to secure the unit Ensure that the end of the mounting screws fit into the indentations on the mounting collar Watlow Anafaze 15 Chapter 2 Installation CPC400 Series User s Guide Mounting the TB50 There are two ways to mount the TB50 Use the pre in stalled DIN rail mounting brackets or use the plastic standoffs TB50 Mounted X with Standoffs BO TB50 i Mounted to S DIN Rail Figure 2 5 Mounting the TB50 DIN Rail Mounting Snap the TB50 on to the DIN rail by placing the hook side on the rail first then pushing the snap latch side in place See Figure 2 6 of v A 800808800600 WWF Wj AAW Sw 288 G08 G88 O98 Figure 2 6 TB50 Mounted ona DIN Rail Front 16 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation To remove the TB50 from the rail use a flathead screw driver to unsnap the bracket from the rail See Figure 2 7 5 D Removal Catch for Screwdriver DIN Rail Snap Latch Hook Side Figure 2 7 TB50 Mounted on DIN Rail Side Mounting with Standoffs 1 Remove the DIN rail mounting brackets from the TB50 2 Choose a location with enough clearance to remove the TB50 its SCSI cable and the controller itself Mark the four mounting holes Drill and tap four moun
116. age 178 mounting 18 output voltage 178 requirements 18 specifications 176 178 weight 177 wiring 24 25 Power up alarm delay parameter 100 Power up loop mode parameter 100 Power up with logic parameter 100 preset multiple registers 193 preset single register 191 process alarms 141 142 alarm high 66 alarm low 66 boost output 66 codes 52 function 66 high deviation 66 low deviation 66 outputs 65 parameters 121 125 setting up 65 process inputs 0 5 Vdc setup example 60 4 20 mA setup example 59 CPC400 Series User s Guide display format 106 engineering units 105 scaling and calibration 162 setting up 58 62 specifications 172 process variable not displayed correctly 21 143 148 on loop display 50 retransmit see process variable retransmit process variable retransmit 67 69 application example 68 parameters 125 126 programmable logic see logic program proportional band description 82 guidelines for setting 85 87 setting a value 111 settings for various temperature ranges 85 settings from other controllers 86 pulse inputs display format 106 encoder signals 31 engineering units 105 loops available on 31 sample period 105 scaling and calibration 162 setting up 58 62 setup example 61 specifications 172 technical information 31 wiring 31 PV retrans menu 125 126 PV source parameter 110 PV see process variable Q query Modbus 184 R RAM clearing 153 erasure of during flash memory replacement 154 ratio contr
117. ailure Gain or Offset on page 146 Table 6 2 indicates potential problems with the system or controller and recommends corrective actions Table 6 2 Other Symptoms Symptom Indicated tempera ture not as expected Possible Causes Controller not communicating Sensor wiring incorrect Noise Recommended Action See Checking Analog Inputs on page 148 CPC400 display is not lit Power connection incorrect Failed flash memory chip Check wiring and service See Wiring the Power Supply on page 24 Replace the flash memory chip See Replacing the Flash Memory Chip on page 154 CPC400 damaged or failed Return the CPC400 for repair See Return ing a Unit on page 140 CPC400 display is lit but keys do not work Keypad locked Unacknowledged alarm See Keys Do Not Work on page 147 An alarm condition exists and has not been acknowledged See How to Acknowledge an Alarm on page 52 CPC400 damaged or failed Return the CPC400 for repair See Return ing a Unit on page 140 Doc 0600 2900 2000 Watlow Anafaze 143 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide Symptom Possible Causes Recommended Action Control mode of one or more loops changes from auto matic to manual Failed sensor Check the display or HMI software for a failed sensor message BCD job selection feature loaded a different job Check whether the
118. al alarm output stays active until all alarms have been acknowledged When the global alarm output is active it conducts current to the controller s dc common When the global alarm out put is not active it does not conduct current You cannot configure any parameters for the glo bal alarm The active state of the global alarm out put is NOT affected by the D O alarm polarity parameter in the Global setup menu Setting Up Process Variable Retransmit Doc 0600 2900 2000 The process variable retransmit feature retransmits the process variable of one loop primary via the control output of another loop secondary This signal is linear and pro portional to the engineering units of the primary loop in put Typical uses include data logging to analog recording sys tems and long distance transmission of the primary signal to avoid signal degradation The retransmitted signal can also be used as an input to other types of control systems such as a PLC Watlow Anafaze 67 Chapter 3 Operation and Setup CPC400 Series User s Guide Any available heat or cool output may be used as a retrans mit output Any process variable may be retransmitted in cluding the input from the same loop To get a 4 to 20 mA or 0 to 5V dc signal the controller output signal must be connected to a Serial DAC How to Set Up Process Variable Retransmit 1 Configure all of the setup parameters for the primary loop the loop whose inpu
119. al outputs become available for alarms or program mable logic 2if you install a Watlow Anafaze Serial DAC the CPC400 series control ler uses digital output 34 for a clock line You cannot use output 34 for anything else if a Serial DAC is installed Watlow Anafaze 37 Chapter 2 Installation TB50 Connections CPC400 Series User s Guide Table 2 6 TB50 Connections Control Output Control Output Ter Function cpcaos cpc4oa Te Function cpcaos CPC404 minal minal 1 a 2 5V dc 5V dc CTRL COM 4 CTRL COM Not Used 6 Watchdog Timer 7 Pulse Input 8 Global Alarm 9 Output 1 Loop 1 heat Loop 1 heat 10 Output 34 11 Output 2 Loop 2 heat Loop 2 heat 12 Output 33 13 Output 3 Loop 3 heat Loop 3 heat 14 Output 32 15 Output 4 Loop 4 heat Loop 4 heat 16 Output 31 17 Output 5 Loop 5 heat Pulse loop 18 Output 30 heat 19 Output 6 Loop 6 heat Loop 1 cool 20 Output 29 21 Output 7 Loop 7 heat Loop 2 cool 22 Output 28 23 Output 8 Loop 8 heat Loop 3 cool 24 Output 27 25 Output 9 Pulse loop Loop 4 cool 26 Output 26 heat 27 Output 10 Loop 1 cool Pulse loop 28 Output 25 cool 29 Output 11 Loop 2 cool 30 Output 24 31 Output 12 Loop 3 cool 32 Output 23 33 Output 13 Loop 4 cool 34 Output 22 35 Output 14 Loop 5 cool 36 Output 21 37 Output 15 Loop 6 cool 38 Output 20 39 Output 16 Loop 7 cool 40 Output
120. ameter 112 heat message on loop display 50 Heat output curve parameter 120 Heat output parameter 55 Heat output retrans PV parameter 126 Heat output type parameter 116 heat output see control outputs Heat power limit parameter 118 Heat prop band parameter 111 Heat SDAC signal parameter 117 HiDeviation func parameter 123 HiDeviation output parameter 123 HiDeviation value parameter 66 122 high deviation alarm see process alarms holding registers placing value into 191 reading contents of 190 Ht retrans HighPV parameter 126 Ht retrans LowPV parameter 126 Ht SDAC hi signal parameter 118 Ht SDAC low signal parameter 117 HtPwr limit time parameter 119 humidity Watlow Anafaze 203 Index controller 165 Dual DAC 178 power supply 176 Serial DAC 180 hysteresis alarm 66 control 113 Hysteresis parameter 113 I O tests menu 131 132 Input filter parameter description 109 Input high signal parameter 107 Input low signal parameter 108 Input menu 104 109 input power see power supply Input pulse sample parameter 105 Input range high parameter 107 Input range low parameter 108 input registers reading contents of 190 Input type parameter 104 Input units parameter 105 inputs analog see sensor inputs current see current inputs digital see digital inputs filter 109 on off status through communications 190 process see process inputs pulse see pulse inputs RTD see RTD scaling parameters 58 107 108 scaling resistors 157
121. ameter setup for this example Table 3 9 Parameters Settings for Process Variable Retransmit Example tl Parameter Value Comment PLH i Choose to retransmit the loop 1 process variable TI tl This is the input value represented by a 0 percent output signal The recorder input is a linear 4 to 20 mA signal representing a range of 0 to 1000 F so we will use a O percent output signal to represent OF This is the input value represented by a 100 percent output signal The recorder input is a linear 4 to 20 mA signal representing a range of 0 to 1000 F so we will use a 100 percent output signal to represent 1000 F th Peri Not using the cool output of loop 2 to retransmit a process variable To complete this configuration the output for loop 2 must be configured to provide the 4 to 20 mA analog signal via the Serial DAC that is required by the data logger When setup is completed the controller will produce an output on loop 2 which is linear and proportional to the loop 1 process variable Setting Up Cascade Control Cascade control is used to control thermal systems with long lag times which cannot be as accurately controlled with a single control loop The output of the first primary loop is used to adjust the set point of the second secondary loop The secondary loop normally executes the actual con trol Some applications such as aluminum casting use two z
122. ameters are loaded for each loop as part of a job e PID constants filter settings set points and hystere ALARM SETPOINT STATUS OUT SIS e Control mode automatic or manual and output power levels if the loop is in manual control e Alarm functions set points hysteresis and delay set tings e Soft integers 81 to 100 and soft Booleans 237 to 256 If you have enabled remote job selection see BCD Job Load on page 97 you will see the message below and you will not be able to use the controller keypad to load a job Loop PROCESS UNITS ALARM SETPOINT STATUS OUTS NOTE Current settings are overwritten when you select a job from memory Save your current settings to another job number if you want to keep them Values 1 to 8 1 to 8 or none 0 Values in parentheses are for serial communications and LogicPro Default none 0 Modbus Address 44836 Parameter Number 111 LogicPro Driver Database LogicPro Address 111 1 Save Setup as Job Loop process UNITS Save the current settings as one of eight jobs in the battery i backed RAM The following parameters are saved for each loop as part of a job AA SPORT STATUS OUT e PID constants filter settings set points and hysteresis e Control mode automatic or manual and output power levels if the loop is in manual control 96 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide BCD Job Load LO
123. ameters for optimum control Both heating and cooling PID parameters are set The preferred and quickest method for tuning a loop is to use the tune mode to establish initial control settings and continue with the adaptive mode to fine tune the settings Setting a loop s control mode to tune starts this two step tuning function First a predictive tune determines initial rough settings for the PID parameters Second the loop au tomatically switches to the adaptive mode which fine tunes the PID parameters This function can be used for heat only heat and cool and cool only PID control systems Once the process variable has been at set point for a suit able period of time about 30 minutes for a fast process to roughly 2 hours for a slower process and if no further tun ing of the PID parameters is desired or needed the control mode may be switched to auto However only operating the controller in the adaptive mode allows it to automatically adjust to load changes and compensate for differing control characteristics at various set points for processes that are not entirely linear Once the PID parameters have been set by the TRU TUNE adaptive algorithm the process if shut down for any reason can be restarted in the adaptive control mode Before Tuning Before autotuning the controller hardware must be in stalled correctly and these basic configuration parameters must be set e Input type and scaling if required e O
124. arm behaves as a standard alarm or as a boost output For descriptions of the standard and boost functions see Table 5 16 on page 122 Table 5 18 shows the bit to set or read for each alarm See Bit Wise Values on page 78 for information on reading or setting this parameter This parameter is available only for serial communications and LogicPro programs Values Standard alarm 0 or boost output 1 Default Standard alarm 0 Modbus Address Loops 1 to 9 40494 to 40502 Parameter Number 29 LogicPro Driver Database LogicPro Address Loops 1 to 9 29 1 to 29 9 Watlow Anafaze 133 Chapter 5 Menu and Parameter Reference Alarm Status Ambient Sensor Reading Analog Input 134 CPC400 Series User s Guide Indicates whether an alarm is active Table 5 19 shows the bit to set or read for each alarm This parameter is avail able only for serial communications and LogicPro pro grams See Bit Wise Values on page 78 for information on reading or setting this parameter Values Not active 0 or active 1 Modbus Address Loops 1 to 9 40392 to 40400 Parameter Number 23 LogicPro Driver Database LogicPro Address Loops 1 to 9 23 1 to 23 9 Table 5 19 Bit Positions for Alarm Status and Alarm Acknowledge Alarm Bit Low Deviation Alarm Third High Deviation Alarm Fourth Alarm Low Fifth Alarm High Sixth Thermocouple Reversed Seventh Thermocouple Shorted Eighth Thermocouple Open Ninth
125. arms Chapter 6 Troubleshooting and Reconfiguring When a process alarm occurs the controller switches to the single loop display for the loop with the alarm and displays the alarm code see Alarm Displays on page 51 WatView software displays a message on the alarm screen and logs the alarm in the event log Possible Causes of a Process Alarm Doc 0600 2900 2000 NOTE NOTE In a heating application a low alarm or low deviation alarm may indicate one of the following e The heater has not had time to raise the temperature e The load has increased and the temperature has fallen e The control mode is set to manual instead of automatic e The heaters are not working because of a hardware failure e The sensor is not placed correctly and is not measuring the load s temperature e The alarm settings are too tight The process variable varies by more than the alarm limits because of load changes lag or other system conditions e The system is so poorly tuned that the temperature is cycling about set point by more than the alarm set point In cooling applications similar issues cause high alarms In a heating application a high alarm or high deviation alarm may indicate one of the following e The process set point and high alarm set point have been lowered and the system has not had time to cool to within the new alarm setting e The controller is in manual mode and the heat output is greater than 0 percent
126. asure for ac voltage that may be present between control panels chassis grounds Any ac voltage above 2V ac may indicate problems with the ac ground circuit With the heater power on check for ac voltage on ther mocouples A control output providing power to the heaters will increase the ac voltage if there is heater leakage and an improper grounding circuit Measure from either positive or negative thermocouple lead to ac ground AC voltage above 2V ac may indicate the ground lead is not connected to the CPC400 TB2 ground terminal If the above tests indicate proper ac grounding but the con troller is indicating incorrect temperatures or process read ings Verify which type of sensor is installed and that the Input type parameter in the Input menu is set accord ingly Watlow Anafaze 149 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide Checking Control Outputs e Foran RTD or process input check that the correct in put scaling resistors are installed see Installing Scal ing Resistors on page 157 and check the input scaling parameter settings see Setting Up a Process or Pulse Input on page 58 e If readings are erratic look for sources of electrical noise See Noise Suppression on page 21 e Contact your supplier for further troubleshooting guidance To check control outputs e Set the loop you want to check to manual mode see Changing the Control Mode and Output Power on page
127. attery backed storage of operating parameters If a power loss occurs the operating parameters are stored in memory The battery has a ten year shelf life and it is not used when the controller is on e Microprocessor control of all calculations for input sig nal linearization PID control alarms and communi cations The display and keypad provide an intelligent way to oper ate the controller The display has 16 alphanumeric or graphic characters per line The eight key keypad allows you to change the operating parameters controller func tions and displays The displays show process variables set points and output levels for each loop A single loop display scanning display and alarm display offer a real time view of process condi tions For useful tips help and menu information press 6 from any screen v S H EA LOOP PROCESS ONIS 0 ALARM SETPOINT STATUS OUT Tie gt vy Figure 1 4 CPC400 Front Panel Watlow Anafaze 7 Chapter 1 System Overview TB50 CPC400 Cabling CPC400 Series User s Guide The TB50 is a screw terminal interface for control wiring It allows you to connect relays encoders and discrete I O devices to the CPC400 The screw terminal blocks accept wires as large as 18 AWG 0 75 mm A 50 pin SCSI cable connects the TB50 to the CPC400 lo C Q co o a co co cop io co IN
128. ble exceed the set point is called overshoot Watlow Anafaze 83 Chapter 4 Tuning and Control CPC400 Series User s Guide Proportional Integral and Derivative Control PID Heat and Cool Outputs 84 Derivative control corrects for overshoot by anticipating the behavior of the process variable and adjusting the out put appropriately For example if the process variable is rapidly approaching the set point from below derivative control reduces the output anticipating that the process variable will reach set point Use derivative control to re duce the overshoot and oscillation of the process variable that is common to PI control Figure 4 4 shows a process under full PID control Set Point Proportional Band Doim Process Variable Figure 4 4 Proportional Integral and Deriva tive Control Each loop may have one or two outputs Often a heater is controlled according to the feedback from a thermocouple in which case only one output is needed In other applications two outputs may be used for control according to one input For example a system with a heater and a proportional valve that controls cooling water flow can be controlled according to feedback from one thermo couple In such systems the control algorithm avoids switching too frequently between heat and cool outputs The on off algo rithm uses the control hysteresis parameter to prevent such oscillations see Hysteresis on page 113 W
129. c for example an average of two or more analog inputs set the loop to take its feed back from a soft integer and create a logic program to write the desired value to the soft integer ALARM SETPOINT STATUS OUT Table 5 11 PV Source Options Modbus or Display Value ogicPro Value Description PV Source is the analog input corre sponding to the loop number in p in 0 PV Source is the soft p soft integer corre integer r sponding to the loop number Values input n 0 or soft integer n 1 Where n is the channel number Default input n 0 Modbus Address 45394 to 45411 Parameter 136 LogicPro Driver Database LogicPro Address Loops 1 to 9 136 1 to 136 9 110 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 5 Menu and Parameter Reference Control Menu Loop process UNITS Use the Control menu to adjust heat and cool control pa aBi C il p rameters including e Proportional band integral and derivative e Output filter e Control hysteresis ALARM SETPOINT STATUS OUT The controller has separate PID and filter settings for heat and cool outputs In this section only the heat screens are shown but the explanations apply to both the heat and cool parameters If you have not set up a CPC400 series controller before or if you do not know which values to enter read the Tuning and Control chapter which contains PID tuning constants
130. ch may damage the controller or induce noise and cause poor control Physically separate high voltage circuits from low voltage circuits and from CPC400 hardware If possible install high voltage ac power circuits in a separate panel Wiring Recommendations Follow these guidelines for selecting wires and cables e Use stranded wire Solid wire can be used for fixed service it makes intermittent connections when you move it for maintenance e Use 20 AWG 0 5 mm thermocouple extension wire Larger or smaller sizes may be difficult to install may break easily or may cause intermittent connections e Use shielded wire The electrical shield protects the signals and the CPC400 from electrical noise Connect one end of the input and output wiring shield to earth ground e Use copper wire for all connections other than thermo couple sensor inputs 20 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation Table 2 1 Cable Recommendations No of 2 Maximum Function Mfr P N Wires AWG mm Length Ansiog inputs Belden 9154 2 20 0 5 _ atog nee Belden 8451 2 22 0 5 Belden 8772 3 20 0 5 Pal pidis Belden 9770 3 22 0 5 Thermocouple Inputs T C Ext Wire 2 20 0 5 Belden 9539 9 24 0 2 ny and Belden 9542 20 24 0 2 gita Ribbon Cable 50 22to 14 0 5to 2 5 Belden 9154 2 20 0 5 Analog Outputs Belden 8451 2 22 0 5 Belden 9729 4 24 0 2 4000 ft 1219 m Computer Communi
131. ctrostatic discharge 154 EMI see noise encoders 31 environment 13 controller 165 Dual DAC 178 power supply 176 Serial DAC 180 error checking 187 190 ESD see electrostatic discharge external bridge circuit 30 external safety devices 9 F Fahrenheit 105 failed sensor alarms behavior of 142 codes 52 messages 51 52 output power if sensor alarm occurs 119 restoring automatic control after sensor repair 65 114 RTD open 65 RTD shorted 65 setting up 63 65 thermocouple open 64 120 thermocouple reversed 64 106 Doc 0600 2900 2000 Index thermocouple short 64 101 field format Modbus 188 filter output 89 113 sensor input 109 firmware checksum 103 standard or custom 135 version 103 135 Firmware Identification parameter 135 flash memory replacing 154 156 force multiple coils 192 force single coil 191 frequency 102 front panel 7 display see display keypad see keypad Full Scale Calibration parameter 136 function field Modbus 186 functions see Modbus functions G gain see proportional band Global setup menu 96 103 ground loops 23 communications 43 isolation 32 and thermocouples 29 troubleshooting 149 grounding troubleshooting 149 H H W failure Ambient 53 146 147 H W failure Gain 53 146 H W failure Offset 53 146 HD alarm code 52 Heat action parameter 118 Heat cycle time parameter 117 Heat derivative parameter 112 Heat filter parameter 113 Heat integral parameter 112 Heat manual reset par
132. curs if the process deviates from set point by more than a user specified amount see Figure 3 7 You can set separate high and low deviation values at the HiDeviation value and LoDeviation value parameters in the Alarms menu 66 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Global Alarm NOTE Chapter 3 Operation and Setup Upon power up or when the set point changes the behavior of the deviation alarms depends upon the alarm function e Ifthe alarm function parameter is set to standard then deviation alarms do not activate until the after the process variable has first come within the devia tion alarm band This prevents nuisance alarms e Ifthe alarm function parameter is set to boost then the deviation output switches on whenever the set point and process variable differ by more than the de viation setting regardless of whether the process vari able has been within the deviation band This allows you to use boost control upon power up and set point changes The CPC400 comes equipped with a global alarm output The global output is activated if one or more of the follow ing conditions occurs e Asystem alarm occurs or e A failed sensor alarm occurs and is unacknowledged or e A process alarm occurs and is unacknowledged The global alarm occurs only if the alarm function is set to standard in the Alarms menu The global alarm does not occur if the alarm function is set to boost The glob
133. d bracket Mark the bracket s two outer holes for mounting 4 Drill and tap the two mounting holes The bracket holes accept up to 10 4 5 mm screws 5 Mount the power supply on the panel 6 Tighten the screws Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Mounting the Dual DAC or Serial DAC Module This section describes how to mount the optional Dual DAC and Serial DAC digital to analog converters Mounting of the Dual DAC and Serial DAC is essentially the same except that the dimensions differ Jumpers Mounting Dual DAC 4 Holes for 8 3 5 mm Screws or Bolts Installation The output signal range of the Dual DAC and Serial DAC modules is configured with jumpers See Configuring Dual DAC Outputs on page 163 and Configuring Serial DAC Outputs on page 162 for information about setting these jumpers 1 Choose a location The unit is designed for wall mount ing Install it as close to the controller as possible 2 Mark and drill four holes for screw mounting Holes accommodate 8 3 5 mm screws See Figure 2 10 for screw locations Install the unit with the four screws 0 3 in 8 mm A HES 8 e 3 62 in Electrical 91 mm Connectors Gemm ay a l e Aa ii 4 0 37 in 9 mm E 3 7 in p 94 mm lt 0 65 in 17 mm 1 75 in Electrical O Connectors 1 mm i Ce 112 mm
134. d state relay SSR switching is done only at the zero crossing of the ac line which helps reduce electri cal noise Using a DZC output should extend the life of heaters Since the time period for 60 Hz power is 16 6 ms the switching interval is very short and the power is applied uniformly DZC should be used with SSRs Do not use DZC output for electromechanical relays The combination of DZC output and a solid state relay can inexpensively approach the effect of analog phase angle fired control Note however DZC switching does not limit the current and voltage applied to the heater as phase an gle firing does Three Phase Distributed Zero Crossing 3P DZC This output type performs exactly the same as DZC except that the minimum switching time is three ac line cycles This may be advantageous in some applications using three phase heaters and three phase power switching Analog Outputs For analog outputs the PID algorithm calculates an output between 0 and 100 percent This percentage of the analog output range can be applied to an output device via a Dual DAC or a Serial DAC Output Filter The output filter digitally smooths PID control output sig nals It has a range of 0 to 255 scans which gives a time constant of 0 to 85 seconds for a CPC408 or 0 to 43 seconds for a CPC404 Use the output filter if you need to filter out erratic output swings due to extremely sensitive input sig nals like a turbine flow signal o
135. daptive control and cooling Blinks when outside the tune band blank The heat and cool outputs are both disabled 50 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide NOTE Alarm Displays Two Character Alarm Codes Failed Sensor Alarm Messages Doc 0600 2900 2000 Chapter 3 Operation and Setup If the input type for a loop is set to skip the loop display will be blank for that loop The scanning loop display sequentially displays the infor mation for each loop The data for each loop displays for one second To activate the scanning loop display go to the loop display then press and hold the side of the key for three seconds To exit the scanning mode press any key If an alarm condition occurs the controller displays an alarm code or alarm message If a process deviation or failed sensor alarm occurs a two character alarm code appears in the lower left corner of the loop display The alarm code blinks and you cannot change the display until the alarm has been acknowledged After the alarm is acknowledged the alarm code stops blinking The alarm code remains on the display until the condition that caused the alarm is corrected LOOP PROCESS UNITS Alarm Code ALARM SETPOINT STATUS OUT Figure 3 4 Loop Display with Alarm Code For more information about alarms see Setting Up Alarms on page 63 and Process Alarms on page 65 If the alarm is fo
136. de Data Field Error Checking Field Doc 0600 2900 2000 Appendix A Modbus Protocol In addition to its modification of the function code for an ex ception response the slave places a unique code into the data field of the response message This tells the master what kind of error occurred or the reason for the exception The master device s application program has the responsi bility of handling exception responses Typical processes are to post subsequent retries of the message to try diag nostic messages to the slave and to notify operators The contents of the data field varies depending on whether messages originate from a master or slave Data fields in slave messages consist of hexadecimal values Data fields of master messages contain additional informa tion which the slave must use to take the action defined by the function code This can include items like digital and register addresses the quantity of items to be handled and the count of actual data bytes in the field For example if the master requests a slave to read a group of holding registers function code 03 the data field speci fies the starting register and how many registers are to be read If no error occurs the data field of a response from a slave to a master contained the data requested If an error oc curs the field contains an exception code that the master application can use to determine the next action to be tak en The data fi
137. e Derivative 60 Table 4 3 Derivative Term Versus Rate Derivative Rate Derivative Rate seconds minutes seconds minutes 5 0 08 35 0 58 10 0 16 40 0 66 15 0 25 45 0 75 20 0 33 50 0 83 25 0 41 55 0 91 30 0 50 60 1 0 As a general rule set the derivative to 15 percent of inte gral as a starting value NOTE While the basic PID algorithm is well defined and widely recognized various controllers implement it differently Parameters may not be taken from one controller and applied to another with opti mum results even if the above unit conversions are performed Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 4 Tuning and Control General PID Constants by Application This section gives PID values for many applications They are useful as control values or as starting points for PID tuning Proportional Band Only P Set the proportional band to seven percent of the set point Example Set point 450 proportional band 31 Proportional with Integral PI Set the proportional band to ten percent of set point Example Set point 450 proportional band 45 Set integral to 60 Set derivative off Set the output filter to 2 Proportional and Integral with Derivative PID Set the proportional band to ten percent of the set point Example Set point 450 proportional band 45 Set the integral to 60 Set the derivative to 15 percen
138. e contents before transmission The slave device checks each character and the entire message frame during receipt The master is configured by the user to wait for a predeter mined time out interval before aborting the transaction This interval is set to be long enough for any slave to re spond normally If the slave detects a transmission error the message will not be acted upon The slave will not con struct a response to the master Thus the time out will ex pire and allow the master s program to handle the error Note that a message addressed to a nonexistent slave de vice will also cause a time out You can configure controllers for even odd or no parity checking This will determine how the parity will be set in each character If you choose either even or odd parity the quantity of bits that are set to 1 will be counted in the data portion of each character 8 bits The parity bit will then be set to a 0 or 1 to result in an even or odd total of bits set to 1 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide CRC Checking Doc 0600 2900 2000 Appendix A Modbus Protocol For example suppose these eight data bits are contained in an RTU character frame 1100 0101 Four bits are set to 1 If even parity is used the frame s par ity bit will be a 0 resulting in an even quantity of bits four set to 1 If odd parity is used the parity bit will be set to 1 resulting in an odd quantity of bit
139. e humidity pressure flow fluid level events etc Proportional P Output effort proportional to the error from set point For example if the proportional band is 20 and the process is 10 below the set point the heat proportioned effort is 50 percent The lower the PB value the higher the gain Proportional Band PB A range in which the proportioning function of the control is active Expressed in units degrees or percent of span See also PID Proportional Control A control using only the P proportional value of PID control Doc 0600 2900 2000 Glossary Pulse Input Digital pulse signals from devices such as optical encoders PV See Process Variable R Ramp A programmed increase in the temperature of a set point system Range The area between two limits in which a quantity or value is measured It is usually described in terms of lower and upper limits Recipe See Job Relay A switching device Electromechanical Relay A power switching device that completes or interrupts a circuit by physically moving electrical contacts into contact with each other Not recommended for PID control Solid State Relay SSR A switching device with no moving parts that completes or interrupts a circuit electrically Reset See Automatic Reset Manual Reset Resistance Opposition to the flow of electric current mea sured in Ohms Resistance Temperature Detector RTD A sensor that use
140. e loop 1 45311 and 132 2 for loop1 Loop Name P i 132 Database 16 132 3 and 45312 for loop 2 and 132 4 for loop so on 2 and so on PV Source 45394 to 45411 136 Database 16 136 1 t0136 9 Control page 111 Heat Prop Band 40001 to 40009 0 Database 16 0 1 to 0 9 Cool Prop Band 40018 to 40026 1 Database 16 1 1 to 1 9 Heat Integral 40035 to 40043 2 Database 16 2 1 to 2 9 Cool Integral 40052 to 40060 3 Database 16 3 1 to 3 9 Heat Derivative 40069 to 40077 4 Database 16 4 1 to 4 9 Cool Derivative 40086 to 40094 5 Database 16 5 1 to 5 9 Heat Manual Reset 45274 to 45282 129 Database 16 129 1 to 129 9 Cool Manual Reset 45291 to 45299 130 Database 16 130 1 to 130 9 Heat Filter 40239 to 40247 14 Database 16 14 1 to 14 9 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Parameter Reference Parameter Modbus Address Number Driver bits Address Cool Filter 40256 to 40264 15 Database 16 15 1 to 15 9 Hysteresis 40856 to 40864 54 Database 16 54 1 to 54 9 oe 44460 to 44468 87 Database 16 87 1t087 9 Tune Band 46542 to 46550 144 Database 16 144 1 to 144 9 Tune Gain 46559 to 46567 145 Database 16 145 1 to 145 9 Overshoot Reduction 46576 to 46584 146 Database 16 146 1 to 146 9 Control Type 45480 to 45489 139 Database 16 139 1 to 139 9 Output page 116 Heat Output Type 40137 to 40145 8 Database 16 8 1
141. e 1 1 CPC400 Standard Parts List 5 Figure 1 2 CPC400 Special Inputs Parts List 6 Figure 1 3 CPC400 Rear Views 6 Figure 1 4A CPC400 Front Panel 7 Figure 1 5 TB50 8 2 Installation 11 Figure 2 1 CPC400 System Components 12 Figure 2 2 Clearance with Straight SCSI Cable L and Right Angle SCSI Cable R 14 Figure 2 3 Wiring Clearances 14 Figure 2 4 Mounting Bracket 15 Figure 2 5 Mounting the TB50 16 Figure 2 6 TB50 Mounted on a DIN Rail Front 16 Figure 2 7 TB50 Mounted on DIN Rail Side 17 Figure 2 8 Mounting a TB50 with Standoffs 17 Figure 2 9 CPC400 Power Supply Mounting Bracket 18 Figure 2 10 Dual DAC and Serial DAC Dimensions 19 Figure 2 11 CPC400 Series Controller with TB18 23 Figure 2 12 CPC400 Series Controller with TB50 23 Figure 2 13 Power Connections with the CPC400 Power Supply 25 Figure 2 14 CPC400 Connector Locations 28 Figure 2 15 Thermocouple Connections 29 Figure 2 16 RTD Connections 29 Figure 2 17 Voltage Signal Connections 30 Figure 2 18 Current Signal Connections 30 Figure 2 19 Encoder with 5V dc TTL Signal 31 Figure 2 20 Encoder Input with Voltage Divider 31 Figure 2 21 Digital Output Wiring 33 Figure 2 22 Sample Heat Cool and Alarm Output Connections 35 Figure 2 23 Output Connections Using External Power Supply 35 Figure 2 24 TB50 Watchdog Timer Output 35 Figure 2 25 TB18 Watchdog Timer Output 35 Figure 2 26 Wiring Digital Inputs 36
142. e 16 91 1t091 9 Process Variable Cool Retransmit High 44529 to 44537 92 Database 16 92 1 t0929 Process Variable Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Parameter Reference Parameter LogicPro Size LogicPro paramere Modbus Address Number Driver bits Address Cascade page 127 a Samary 44648 to 44654 99 Database 16 99 1 to 99 9 sia Low set 44682 to 44690 101 Database 16 101 1 to 101 9 ae High Set 44699 to 44707 102 Database 16 102 1 to 102 9 Ratio page 128 Ratio Master Loop 44750 to 44758 105 Database 16 105 1 to 105 9 Ratio Low Set Point 44767 to 44775 106 Database 16 106 1 to 106 9 Ratio High Set Point 44784 to 44792 107 Database 16 107 1 to 107 9 Control Ratio 44801 to 44809 108 Database 16 108 1 to 108 9 Ratio Set Point 44818 to 44826 406 pees k 109 1 to 109 9 Differential Soft Integers page 130 126 Soft inte 44883 to 44982 Soft otme integers 110100 oe 140 Soft Soft Integer Value 45496 to 46495 Soft ma Soft_Int 16 1 to 1100 integers 101 to 1100 to 1100 Soft Booleans page 131 Soft Boolean Value 44983 to 45238 127 Soft_Bool 1 1 to 256 I O Tests page 131 Digital Inputs 40719 to 40726 46 Cae ee 1 1108 Keypad Test N A N A N A N A N A Test Digital Output 1 40751 to 40785 47 CPC400_Digital 1 1 t035 to 35 _ Out Additional Parameters for Serial Communications and Logic
143. e of digital computer messages to link components See also Serial Communications Baud Rate Control Action The response of the PID control output relative to the difference between the process variable and the set point See also Direct Action Reverse Action Current The rate of flow of electricity The unit of measure is the Ampere A 1 Ampere 1 coulomb per sec ond Cycle Time The time required for a controller to complete one on off on cycle It is usually expressed in seconds Cyclic Redundancy Check CRC An error checking method in communications that provides a high level of data security D DAC See Digital to Analog Converter Data Logging A method of recording a process variable over a period of time Used to review process perfor mance DC See Direct Current Default Parameters The programmed instructions that are perma nently stored in the microprocessor software 196 Watlow Anafaze CPC400 Series User s Guide Derivative Control D The last term in the PID algorithm Action that anticipates the rate of change of the process and compensates to minimize overshoot and under shoot Derivative control is an instantaneous change of the control output in the same direc tion as the proportional error This is caused by a change in the process variable that decreases over the time of the derivative The derivative is expressed in seconds Deutsche Industrial Norms DIN A set of technical
144. ected to an an alog input on the controller and this input is configured as the master loop for ratio control Proper scaling resistors must be installed on the input to allow it to accept the analog input signal Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup How to Set Up a Remote Analog Set Point 1 For the master loop the loop that accepts the input signal from the external device set the parameters in the Input menu 2 For the ratio loop the one whose set point is controlled by the external device set the parameters in the Ra tio menu Specify the loop that accepts the input signal as the master loop Remote Analog Set Point Example Changing a Set Point with a PLC A PLC provides a 0 to 5V dc signal representing 0 to 300 F as a remote set point input to the CPC400 The input signal is received on loop 1 and control is performed on loop 2 The CPC400 is equipped with the proper scaling resis tors to allow it to accept a 0 to 5V dc input Table 3 14 and Table 3 15 show the parameter settings for this application Table 3 14 Parameters Settings for the Master Loop Loop 1 in the Example Parameter Value Comment T amemo bt ATILA i A 0 to 5V dc input signal is a process input Input Input range high The 5V dc input signal represents 300 F The controller is equipped with a 0 to 5V dc Input Input hi
145. eld can be nonexistent of zero length in certain kinds of messages where the function code alone specifies the action The error checking field contains a 16 bit value implement ed as two 8 bit bytes The error check value is the result of a cyclical redundancy check CRC calculation performed on the message contents The CRC field is appended to the message as the last field in the message When this is done the low order byte of the field is appended first followed by the high order byte The CRC high order byte is the last byte to be sent in the mes sage Watlow Anafaze 187 Appendix A Modbus Protocol Field Format CPC400 Series User s Guide When messages are transmitted on standard Modbus seri al networks each character or byte is sent in this order left to right Least Significant Bit Most Significant Bit The bit sequence is as follows e With parity checking Start 1 2 3 4 5 6 7 8 Parity Stop e Without parity checking Stat 1 2 3 4 5 6 7 8 Stop stop Error Checking Methods Parity Checking 188 Modbus RTU use two kinds of error checking e Parity checking e Frame checking CRC Parity checking can be optionally applied to each character while the frame checking is applied to the entire message Both the character check and message frame check are generated in the master device and applied to the messag
146. enabled e Thermocouple reversed enabled by default e RTD open positive input or open negative input e RTD short between the positive and negative inputs Watlow Anafaze 63 Chapter 3 Operation and Setup CPC400 Series User s Guide What Happens if a Failed Sensor Alarm Occurs Thermocouple Open Alarm Thermocouple Reversed Alarm Thermocouple Short Alarm 64 If a failed sensor alarm occurs e The controller switches to manual mode at the output power indicated by the Sensor fail heat output and Sensor fail cool output parameters in the Output menu The output power may be different for a ther mocouple open alarm see Thermocouple Open Alarm below e The controller displays an alarm code and alarm mes sage on the display See Alarm Displays on page 51 e The global alarm output is activated The thermocouple open alarm occurs if the controller de tects a break in a thermocouple or its leads If a thermocouple open alarm occurs the controller switch es to manual mode The output level is determined as fol lows e Ifthe Open T C ht cl out average parameter in the Output menu is set to on then the controller sets the output power to an average of the recent output e Ifthe Open T C ht cl out average parameter is set to off then the controller sets the output to the level in dicated by the Sensor fail heat cool output parameter in the Output menu The thermocouple reversed alarm occurs if the tempera
147. ength 4 4 inches 112mm Width 3 6 inches 91 mm Height 1 8 inches 44 mm 178 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 7 Specifications 0 162 in diameter 0 3 in 0 4 in 8mm 10mm Figure 7 8 Dual DAC Dimensions Dual DAC Inputs The Dual DAC accepts an open collector signal from the CPC400 controller and the power from an external power supply See Table 7 29 Table 7 29 Dual DAC Power Requirements Parameter Description Voltage 12 to 24V dc Current 100 mA 15V dc Doc 0600 2900 2000 Watlow Anafaze 179 Chapter 7 Specifications CPC400 Series User s Guide Dual DAC Analog Outputs Table 7 30 DualDAC Specifications by Output Range Version 4to 20 mA 0 to 5V Oto 10V Units Gain Accuracy 6 6 6 percent Output Offset 0 75 0 75 0 75 parcam ari scale range Ripple 1 6 1 6 16 percent of full scale range Response Time 2 2 2 seconds Maximum Current Output 20 10 10 mA dc Load Resistance 12V 250 maximum 500 minimum 1000 minimum Ohms Load Resistance 24V 850 maximum n a n a Ohms Serial DAC Specifications Watlow Anafaze offers a Serial DAC for precision open loop analog outputs The Serial DAC is jumper selectable for a 0 to 10V dc or 4 to 20 mA output Multiple Serial DAC modules can be used with one CPC400 The Serial DAC carries a CE mark Table 7 31 Serial DAC Environmental Specifi cati
148. ensor Functions 142 When a loop uses the Soft Integer for a PV Source some failed sensor functions are disabled These include func tions that require linkages between specific thermocouple or RTD input and loop outputs to operate correctly When a loop uses a soft integer as the PV Source the thermocou ple or RTD no longer has a direct relationship to a specific loop output The failed sensor functions disabled are e Thermocouple Short Alarm Global e Reversed Thermocouple Detection Loop e Restore Automatic Mode Loop e Sensor Fail Heat Cool Output Loop This parameter will switch a loop to manual mode at the specified output power if a failed sensor alarm oc curs or the mode override input becomes active Only the function that sets the output based on a failed sen sor is disabled e Open Thermocouple Heat Cool Output Average Loop Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide System Alarms Other Behaviors Chapter 6 Troubleshooting and Reconfiguring If the controller detects a hardware problem it displays an alarm message The message persists until the condition is corrected The CPC400 displays the following system alarm messages e Low power See Low Power on page 145 e Battery dead See Battery Dead on page 145 e HIW failure Ambient See H W Failure Ambient on page 146 e HIW failure Gain See H W Failure Gain or Offset on page 146 e HIW failure Offset See H W F
149. ensor to sensor potential at each of the other sensor con nections c Move the negative lead to the next sensor d Repeat steps b and c to measure the voltage be tween each pair of sensors e Correct any problems indicated by excessive voltage readings Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Earth Grounding Doc 0600 2900 2000 Chapter 6 Troubleshooting and Reconfiguring Verify the sensors e For thermocouples remove the thermocouple leads and use a digital voltmeter to measure the resistance between the positive and negative thermocouple leads A value of 2 to 20 Q is nor mal Readings in excess of 200 Q indicate a prob lem with the sensor e For RTDs measure between the IN and IN ter minals of TB1 RTD inputs should read between 20 and 250 Q To verify that the controller hardware is working cor rectly check any input except the pulse input or an RTD as follows a Disconnect the sensor wiring b In the Input menu set the Input type parameter tod T C c Place a short across the input On the loop that you are testing the controller should indicate the ambient temperature If you suspect a problem with the ac ground or a ground loop Measure for ac voltage between ac neutral and panel chassis ground If ac voltage is above 2V ac then there may be a problem with the ac power wiring This should be corrected per local electrical codes With ac power on me
150. er s Guide Accessing and Navigating the Setup Menus Use the setup menus to configure the controller For a list of all setup menus and parameters refer to Figure 5 2 on page 95 How to Access the Setup Menus To access the setup menus press and hold for three sec onds until the Global setup menu appears To prevent unauthorized personnel from accessing setup parameters the controller reverts to the regular display if you do not press any keys for three minutes How to Edit a Setup Parameter To edit a setup parameter go to the appropriate setup menu go to the parameter then edit the value 1 Press and hold 4 for three seconds to access the setup menus 2 Press to go to the appropriate a menu 3 If applicable press to choose the loop that you want to edit 4 Press to go to the parameter that you want to edit To edit a parameter e Press O or O to choose a value e Press to save the new value and go to the next parameter e Press to cancel a change without saving 6 Repeat from step 4 to edit another parameter in the current menu 7 Press 4 to return to the top level menus 8 Repeat from step 2 to go to another menu or press 9 to exit the setup menus For information about setting parameters through serial communications or LogicPro programs see Setting Param eters Through Serial Communications or a LogicPro Pro gram on page 78 56 Watlow Anafaze Doc 0600 2900 2000 CPC400
151. erally the longer the pulse sample time the more sta ble the process variable but the slower the response of the loop Values 1 to 20 seconds Default 1 second Modbus Address 40580 Parameter Number 35 LogicPro Driver Database LogicPro Address 35 1 For a thermocouple or RTD input enter the offset to correct for signal inaccuracy A positive value increases the read ing and a negative value decreases it Use an independent sensor or your own calibration equipment to find the offset for your system Values See Table 5 8 Default 0 or 0 0 Modbus Address Loops 1 to 8 40649 to 40656 Parameter Number 40 LogicPro Driver Database LogicPro Address Loops 1 to 8 40 1 to 40 8 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Watlow Anafaze 105 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Table 5 8 Calibration Offset Ranges Offset Range Type of Sensor F Cc RTD 300 0 to 300 0 300 0 to 300 0 J Thermocouple K Thermocouple 300 to 300 300 to 300 T Thermocouple B Thermocouple S Thermocouple 320 to 7 300 to 300 R Thermocouple 300 to 66 300 to 300 Reversed Thermocouple Detection LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Display Format LOOP PROCESS UNITS SETPOINT STATUS OUT 106 Choose whether to enable polarity checkin
152. ere pos sible Isolate digital inputs from ground through solid state relays If this is not possible then make sure the digi tal input is the only connection to earth ground other than the chassis ground Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Ground Loops Power Connections Doc 0600 2900 2000 Chapter 2 Installation Ground loops occur when current passes from the process through the controller to ground This can cause instru ment errors or malfunctions The best way to avoid ground loops is to minimize unneces sary connections to ground Do not connect any of the fol lowing terminals to each other or to earth ground Power supply dc common TB1 terminals 5 6 11 12 analog common TB1 terminal 17 reference voltage common TB1 terminals 23 24 communications common TB2 terminal 2 dc power common This section explains how to make power connections to the CPC400 and the TB50 gt jeveloeeleoe o00e TBI to signal TB2 2 ogl 22220202 inputs to power seccceccecceee see COMPONENT SIDE aman supply 2e el eoeeeeeeee0e0000 a ooooocooocoocoocoo0oo0oo0o00000000000000 to digital oocoocooocoocoocooocooo0oo0o00000000000000 outputs Na P TB2 eos oo9o0o000900000000009 O poocoppoooodooo00oonmrnoood O 2000000000000000000000000 Co oo oe oo oo oo Ko oo oo oo bo o oocoooocooooooaoooo0oo ASSY NO 30540 REV
153. es and decimal placement Default See Table 5 13 on page 113 Modbus Address Loops 1 to 9 40341 to 40349 Parameter Number 20 LogicPro Driver Database LogicPro Address Loops 1 to 9 20 1 to 20 9 122 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide High Deviation Function LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT High Deviation Output LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Low Deviation Value LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Low Deviation Function LOOP PROCESS UNITS d LT H RUE E H Trae TRAP TE ALARM SETPOINT STATUS OUT Low Deviation Output LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Choose whether the alarm functions as an alarm or as a boost output or disable the alarm Values See Table 5 16 on page 122 Default off Modbus and LogicPro See Alarm Acknowledge on page 132 and Alarm Function on page 133 Choose a digital output to activate when the high deviation alarm occurs You cannot choose an output that is in use for closed loop control or for the Serial DAC clock Values none 0 or output 1 to 34 1 to 34 Values in pa rentheses are for serial communications and LogicPro Default none 0 Modbus Address Loops 1 to 9 40460 to 40468 Parameter Number 27 LogicPro Driver
154. esistors Special input re sistors installed at Watlow Anafaze divide analog input voltages such that the controller sees a 10 to 60 mV signal on the loop CH IN Device with Voltage Output CH IN e Figure 2 17 Voltage Signal Connections Current Input Connections Current input requires scaling resistors Special input re sistors installed at Watlow Anafaze for analog current sig nals are such that the controller sees a 10 to 60 mV signal across its inputs for the loop CH IN Device with Current CHIN e Output Figure 2 18 Current Signal Connections 30 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Pulse Input Connections Doc 0600 2900 2000 NOTE Chapter 2 Installation The CPC400 can accept a pulse input up to 2000 Hz from a device such as an encoder The frequency of this input is scaled with user configured parameters see Setting Up a Process or Pulse Input on page 58 This scaled value is the process variable for loop 5 on a CPC404 or loop 9 ona CPC408 The CPC400 can accommodate encoder signals up to 24V dc using a voltage divider or can power encoders with the 5V dc from the TB50 or TB18 The following figures show how to connect encoders A pull up resistor in the CPC400 allows open collector inputs to be used If the signal on the pulse input exceeds 10kHz the controller s operation may be disrupted Do not connec
155. etection 101 troubleshooting 149 types supported 104 wiring 28 29 thermoforming example 76 tie wraps 32 time proportioning 116 cycle time 117 description 88 TO alarm code 52 torque see terminal specifications TR alarm code 52 troubleshooting 139 153 alarms 141 143 all loops are set to manual 0 144 Ambient warning 146 Battery dead alarm 145 check these things first 139 communications 152 153 control mode switches unexpectedly 144 control outputs 150 digital inputs 27 131 151 digital outputs 26 132 151 display does not work 143 grounding problems 149 H W failure Ambient alarm 146 147 H W failure Gain alarm 146 H W failure Offset alarm 146 keypad 132 143 147 logic program does not run 144 Low power alarm 145 208 Watlow Anafaze CPC400 Series User s Guide process variable incorrect on display 143 148 RTDs 149 sensor inputs 148 software 153 TB18 150 TB50 150 thermocouples 149 unexpected behavior 144 TRU TUNE 3 57 62 TS alarm code 52 tun message on loop display 50 Tune Band parameter 114 Tune Gain parameter 114 tuning control loops 62 85 87 U UL see agency compliance under temperature shutdown devices 9 unlocking the keypad 101 V voltage inputs ranges 174 resistance 174 scaling resistors 30 160 wiring 30 WwW weight controller 166 Dual DAC 178 power supply 177 Serial DAC 180 TB50 168 wiring see installation Z Zero Calibration parameter 137 Doc 0600 2900 20
156. for voltage or current output through firmware configura tion See Configuring Serial DAC Outputs on page 162 The Serial DAC optically isolates the controller s control output from the load When a single Serial DAC is used it may be powered by the 5V dc found on the TB50 or by an external power supply referenced to the controller s power supply When using multiple Serial DACs the controller cannot provide sufficient current use the 5V dc output from the CPC400 power supply Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation Daisy chain up to Controller 16 Serial DACs Power Supply JEE Serial DAC 5 V 1 5Vin 5 V Common T 2 COMIn 15 V Common J 3 CLKin TB50 or TB18 4 Data In Serial DAC Clock 5 Out Control Output 6 Out Load a Figure 2 29 Single Multiple Serial DACs Serial Communications The CPC400 series controllers are factory configured for EIA TIA 232 communications unless otherwise specified when purchased However the communications are jump er selectable so you can switch between EJA TIA 232 and EIA TIA 485 See Changing the Hardware Communica tions Protocol on page 157 EIA TIA 232 Interface EIA TIA 232 provides communication to the serial port of an IBM PC or compatible computer It is used for single controller installations where the cable length does not ex ceed 50 feet 15 m The EI
157. g see Dual DAC or Serial DAC boost output 66 control see control outputs CPU watchdog timer see CPU watchdog timer digital see digital outputs filter 113 on off status through communications 190 process variable retransmit see process variable retransmit reference voltage see reference voltage solid state relays 34 specifications 174 176 wiring see installation Overshoot Reduction parameter 115 over temperature shutdown devices 9 P panel see installation parameters alarm 121 125 cascade control 127 128 Watlow Anafaze 205 Index channels 109 control 111 115 editing through keypad 56 through LogicPro programs 78 through serial communications 78 global 96 103 VO tests 131 132 input 104 109 map of 95 216 navigating 56 output 116 121 process variable retransmit 125 126 ratio control 128 130 restoring all default settings 153 serial communications and LogicPro only 1382 137 Serial DAC 117 118 soft Booleans 131 soft integers 130 parity 102 188 parts list 4 personal computer see communications PID autotuning see autotuning derivative constant see derivative integral term see integral proportional band see proportional band settings for various applications 87 settings from other controllers 86 tuning 85 87 PLC transmitting process data to 67 see also communications power connections 23 power failure 10 100 power supply dimensions 177 dimensions of mounting bracket 18 for Dual DAC 39 input volt
158. g for thermocou ples If the controller detects a reversed thermocouple it activates an alarm and sets the loop to manual mode at the power level indicated by the Sensor fail heat output or Sen sor fail cool output parameter in the Output menu Values on 1 or off 0 Values in parentheses are for seri al communications and LogicPro and are stored as the first bit of the word at this address so set or read only that bit Default on 1 Modbus Address Loops 1 to 8 44443 to 44450 first bit Parameter Number 86 LogicPro Driver Database LogicPro Address Loops 1 to 8 86 1 to 86 8 first bit For a process or pulse input choose the range and the num ber of decimal places for the process variable and related parameters Choose a precision appropriate for the range and accuracy of the sensor Values See Table 5 9 Default 999 to 3000 for a process input 9999 to 30000 for a pulse input Modbus Address Loops 1 to 9 40666 to 40674 Parameter Number 41 LogicPro Driver Database LogicPro Address Loops 1 to 9 41 1 to 41 9 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 5 Menu and Parameter Reference Table 5 9 Display Formats Modbus or Minimum Maximum Display Value LogicPro Process Process Value Variable Variable 999 to 3000 255 999 3000 9999 to 30000 0 9999 30000 999 9 to 3000 0 1 999 9 3000 0 99 99 to 300 00 2 99 99 300 00 9 999 to 30 000 3 9 999 30 000
159. gh signal input and the input signal is 0 to 5V dc so the signal covers the full scale of 0 to 100 percent Input Input range low 5E The OV dc input signal represents 0 F The controller is equipped with a 0 to 5V dc Input Input Signal input and the input signal is 0 to 5V dc so the signal covers the full scale of 0 to 100 percent Doc 0600 2900 2000 Watlow Anafaze 77 Chapter 3 Operation and Setup CPC400 Series User s Guide Table 3 15 Parameter Settings for the Ratio Loop Loop 2 in the Example Menu Parameter Value Comment oy ae ee a Loop 1 is the master loop receives the input ii eae ee signal from the external device Fotis atio low 3 E For this example we will assume that the pro cess can be set safely over the entire range of Pati stio high St 0 to 300 F If desired we could set a more 5 7 restrictive range for the ratio loop aai E OEE ae For this example we want to retain the origi oe OPEL PATIO Lal i ge nal input value so we will multiply it times 1 0 eh ts tio SP diff For this example we want to retain the origi Poem idii LO S Mm habit nal value so we will add 0 To complete the setup loop 2 must be configured for inputs outputs and alarms In addition loop 1 may be configured for outputs and alarms Setting Parameters Through Serial Communications or a LogicPro Program Non Numeric Settings Bit Wise Values
160. gurations You will need tweezers and a Phillips head screwdriver to switch between EIA TIA 232 and EIA TIA 485 1 Power down the unit 2 Remove the controllers metal casing See Replacing the Flash Memory Chip on page 154 for step by step instructions Find jumpers JU2 JU3 JU4 and JU5 on the board Use tweezers to carefully grasp the jumpers and gen tly slide them off the pins 5 Use tweezers to gently slide jumpers JU2 JU3 JU4 and JU5 onto the correct pins see Figure 6 5 6 Ifyou are configuring the controller as the last device on an EIA TIA 485 network move JU1 to the B posi tion 7 Reassemble the controller Installing Scaling Resistors Resistors are installed for all inputs on the CPC400 Inputs with signal ranges between 10 and 60 mV use 0 Q resis tors in the RC position only All other input signals require special input scaling resistors Doc 0600 2900 2000 Watlow Anafaze 157 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide Input Circuit 158 A CAUTION NOTE Scaling resistors are soldered to the circuit board Only qualified technicians should attempt to install or remove these components Improper techniques tools or materials can result in dam age to the controller that is not covered by the warranty The CPC400 can accept differential thermocouple mVdc Vdc mAdc and RTD inputs Unless ordered with special in puts these controller accept only sig
161. gure 4 4 Proportional Integral and Derivative Control 84 Figure 4 5 Time Proportioning and Distributed Zero Crossing Waveforms 88 5 Menu and Parameter Reference 91 Figure 5 1 Operator Parameter Navigation 92 Figure 5 2 Setup Menus and Parameters 95 Figure 5 3 The Effect of Tune Gain on Recovery from a Load Change 115 Figure 5 4 Linear and Nonlinear Outputs 121 6 Troubleshooting and Reconfiguring 139 vi Figure 6 1 Removal of Electronics Assembly from Case 155 Figure 6 2 Screw Locations on PC Board 155 Figure 6 3 Location of Flash Memory Chip 156 Figure 6 4 Removal of Flash Memory Chip 156 Figure 6 5 Jumper Configurations 157 Figure 6 6 Input Circuit 158 Figure 6 7 Serial DAC Voltage and Current Jumper Positions 162 Figure 6 8 Dual DAC 163 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide List of Figures 7 Specifications 165 Figure 7 1 CPC400 Module Dimensions 166 Figure 7 2 CPC400 Clearances with Straight SCSI Cable 167 Figure 7 3 CPC400 Clearances with Right Angle SCSI Cable 167 Figure 7 4 TB50 Dimensions 169 Figure 7 5 TB50 Dimensions with Straight SCSI Cable 170 Figure 7 6 TB50 Dimensions with Right Angle SCSI Cable 171 Figure 7 7 Power Supply Dimensions Bottom View 177 Figure 7 8 Dual DAC Dimensions 179 Figure 7 9 Serial DAC Dimensions 181 Appendix A Modbus Protocol 183 Figure A 1 Query Response Cycle 184 Figure A 2 Example Message Frame 18
162. he CPC400 case to earth ground The CPC400 system includes noise suppression circuitry This circuitry requires proper grounding Separate the 120V ac and higher power leads from the low level input and output leads connected to the CPC400 series controller Do not run the digital I O or control output leads in bundles with ac wires Where possible use solid state relays SSRs instead of electromechanical relays If you must use electro mechanical relays avoid mounting them in the same panel as the CPC400 series equipment If you must use electromechanical relays and you must place them in a panel with CPC400 series equip ment use a 0 01 microfarad capacitor rated at 1000V ac or higher in series with a 47 Q 0 5 watt resistor across the normally open contacts of the relay load This is known as a snubber network and can reduce the amount of electrical noise You can use other voltage suppression devices but they are not usually required For instance you can place a metal oxide varistor MOV rated at 130V ac for 120V ac control circuits across the load which limits the peak ac voltage to about 180V ac Watlow Anafaze part number 26 130210 00 You can also place a transorb back to back zener diodes across the digital output which limits the digital output voltage Additional Recommendations for a Noise Immune System We strongly recommended the following 22 Isolate outputs through solid state relays wh
163. he type of sensor that is connected to the analog in f put Values See Table 5 7 For the pulse loop CPC404 loop 5 or CPC408 loop 9 the only choices are pulse 7 and skip ALARM SETPOINT STATUS OUT 10 Default J T C 1 for the pulse loop pulse 7 Modbus Address Loops 1 to 9 40103 to 40111 Parameter Number 6 LogicPro Driver Database LogicPro Address Loops 1 to 9 6 1 to 6 9 Table 5 7 Input Types and Ranges Modbus aay or Logic Description Input Range Value J TAE 1 Type J thermocouple 350 to 1400 F 212 to 760 C Eo TAE 2 Type K thermocouple 450 to 2500 F 268 to 1371 C p Te 3 Type T thermocouple 450 to 750 F 268 to 399 C 3 Tet 4 Type S thermocouple 0 to 3200F 18 to 1760 C E TC 5 Type R thermocouple 0 to 3210F 18 to 1766 C E TAE 6 Type B thermocouple 150 to 3200F 66 to 1760 C E TeC 20 Type E thermocouple 328 to 1448 F 200 to 787 C ETO 8 RTD 328 0 to 1150 0 F 200 0 to 621 1 C Voltage or current signal ee 0 depending upon the hard User defined See Setting Up Process rage ware configuration See Variable Retransmit on page 67 Figure 1 2 on page 6 Pulse input Available only pulse 7 for loop 5 on the CPC404 0 to 2000 Hz scalable or loop 9 on the CPC408 Loop is not used for con ER trol does not report SE LE 10 none alarms and is not shown on the scanning display 104 Watlow Anafaze Doc 0600 2900 2000 C
164. hen PID control is used for one or both loop outputs both the hyster esis parameter and PID parameters determine when con trol switches between heating and cooling Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 4 Tuning and Control Manually Tuning PID Loops We recommend using the CPC400 s advanced autotuning and TRU TUNE adaptive control capabilities to set up and maintain the PID control parameter settings See Au totuning on page 62 It is of course possible to tune the controller manually The information in this section is in tended as a guide to that end When tuning a loop choose PID parameters that will best control the process This section gives PID values for a va riety of heating and cooling applications NOTE Tuning is a slow process After adjusting a loop allow about 20 minutes for the change to take ef fect Proportional Band Settings Table 4 1 shows proportional band settings for various temperatures in degrees Fahrenheit or Celsius Table 4 1 Proportional Band Settings Tempesti pe pa ee 1100 to 1199 75 2200 to 2299 135 1200 to 1299 80 2300 to 2399 140 1300 to 1399 85 2400 to 2499 145 1400 to 1499 90 2500 to 2599 150 1500 to 1599 95 2600 to 2699 155 1600 to 1699 100 2700 to 2799 160 1700 to 1799 105 2800 to 2899 165 700 to 799 55 1800 to 1899 110 2900 to 2999 170 800 to 899 60 1900 to 1999 120 3000 to 3099 175 900 to 999 65 200
165. his limit may be continuous or it may be in effect for the number of minutes specified at the next pa rameter ALARM SETPOINT STATUS OUT The power limit only affects loops in automatic mode It does not affect loops in manual mode Values 0 to 100 0 to 1000 Values in parentheses are for serial communications and LogicPro Default 100 1000 Modbus Address Loops 1 to 9 44171 to 44179 heat or 118 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 5 Menu and Parameter Reference 44188 to 44196 cool Parameter Number 70 heat or 71 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 70 1 to 70 9 heat or 71 1 to 71 9 cool Decimal Placement for Modbus or LogicPro See Dec imal Placement for Percentage Values on page 80 Heat Cool Power Limit Time LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Enter the duration of the power limit set at the previous parameter or choose continuous to keep the limit in effect at all times If you choose a timed limit the limit timer restarts when ever the controller powers up and whenever the loop switches from manual to automatic mode Values 1 to 999 minutes 1 to 999 or continuous 0 Val ues in parentheses are for serial communications and Log icPro Default continuous 0 Modbus Address Loops 1 to 9 44205 to 44213 heat or 44222 to 44230 cool Parameter Number 72 heat or
166. icates a potentially hazardous situation which if not avoided could result in death or serious in jury Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury or property damage Indicates pertinent information or an item that may be useful to document or label for later refer ence Accessories may or may not be shipped in the same con tainer as the CPC400 depending upon their size Check the shipping invoice against the contents received in all boxes CPC400 series controllers offer high performance closed loop control and user programmable logic to manipulate process control algorithms and sequential logic The CPC400 provides four or eight independent control loops with analog inputs thermocouples RTDs and pro cess An additional 2 kHz pulse loop is also provided When used as a stand alone controller you may operate the CPC400 via the two line 16 character display and touch keypad You can also use it as the key element in a computer supervised data acquisition and control system The CPC400 can be locally or remotely controlled via an EIA TIA 232 or EIA TIA 485 serial communications inter face CPC400 features include Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Doc 0600 2900 2000 Chapter 1 System Overview TRU TUNE Adaptive Control Enable adaptive control using the unique TRU TUNE adaptive al gorithm and optimize even d
167. icon ductor material that exhibits a large change in resistance for a small change in temperature Thermistors usually have negative temperature coefficients although they are also available with positive temperature coefficients Thermocouple T C A temperature sensing device made by joining two dissimilar metals This junction produces an electrical voltage in proportion to the difference in temperature between the hot junction sensing junction and the lead wire connection to the instrument cold junction Thermocouple Extension Wire A grade of wire used between the measuring junction and the reference junction of a thermo couple Extension wire and thermocouple wire have similar properties but extension wire is less costly 200 Watlow Anafaze CPC400 Series User s Guide Transmitter A device that transmits temperature data from either a thermocouple or RTD by way of a two wire loop The loop has an external power supply The transmitter acts as a variable resistor with respect to its input signal Transmitters are desirable when long lead or extension wires pro duce unacceptable signal degradation U Undershoot The amount by which a process variable falls below the set point before it stabilizes V Volt V The unit of measure for electrical potential volt age or electromotive force EMF See also Volt age Voltage V The difference in electrical potential between two points in a circuit It is
168. ies User s Guide Chapter 6 Troubleshooting and Reconfiguring Corrective and Diagnostic Procedures The following sections detail procedures you may use to di agnose and correct problems with the controller Low Power If the controller displays Low power or the display is not lit 1 Turn the power to the controller off then on again 2 Ifthe Low power alarm message returns check that the power supplied to the controller is at least 12 0V dc at 1 A See Wiring the Power Supply on page 24 3 Ifthe alarm message returns again make a record of all controller settings Then clear the RAM See Clear ing the RAM on page 153 4 Ifthe alarm is not cleared contact your supplier for further troubleshooting guidance See Returning a Unit on page 140 Battery Dead The Battery dead alarm indicates that the battery in the CPC400 is not functioning correctly This alarm occurs upon powerup only The alarm indicates that values stored in memory may have been corrupted because of battery failure NOTE The controller retains its settings when powered The battery is required to keep the settings in memory only when the controller is powered down If a replacement controller is available 1 Make a record of all controller settings Verify that the settings are correct because memory failure may have changed some settings 2 Replace the controller 3 Enter the settings into the new controller If you must use the control
169. ifficult to control or dy namic processes TRU TUNE monitors the process variable and adjusts the control parameters automat ically to keep your process at set point and optimize for set point and load changes User Programmable Logic Customize the control ler to run custom closed loop control algorithms or pro cesses All closed loop control parameters and system T O are available for user programs Program and closed loop control variables can be shared or indepen dent Use LogicPro software to write monitor and de bug logic programs Direct Connection of Mixed Thermocouple Sen sors Connect most thermocouples to the controller with no hardware modifications Thermocouple inputs feature reference junction compensation lineariza tion offset calibration to correct for sensor inaccura cies detection of open shorted or reversed thermocouples and a choice of Fahrenheit or Celsius display Accepts Resistive Temperature Detectors RTDs Use three wire 100 platinum 0 00385 curve sensors Special inputs must be installed Automatic Scaling for Process Analog Inputs The CPC400 series automatically scales process in puts used with industrial process sensors Enter two points and all input values are automatically scaled Special inputs must be installed Dual Outputs The CPC400 series includes both heat and cool control outputs for each loop Independent control parameters are provided for each output Independen
170. ines See Returning a Unit on page 140 If the controller displays H W failure Gain or H W fail ure Offset 1 Acknowledge the alarm 2 Ifthe error message remains switch the power to the controller off then on again 3 Ifthe alarm persists make a record of all controller settings then clear the RAM See Clearing the RAM on page 153 4 Ifthe alarm is not cleared contact your supplier for further troubleshooting guidelines See Returning a Unit on page 140 If the controller has failed it may have been dam aged by excessive voltage Before replacing the controller troubleshoot for high ac voltage on sensors or outputs See Checking Analog Inputs on page 148 The H W failure Ambient alarm indicates that the ambi ent sensor in the CPC400 is reporting that the temperature around the controller is outside of the acceptable range of 0 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 6 Troubleshooting and Reconfiguring to 50 C This alarm can also occur if there is a hardware failure If the controller displays H W failure Ambient 1 2 Acknowledge the alarm If the error message remains check the ambient air temperature near the controller Adjust ventilation cooling or heating so that the temperature around the controller is 0 to 50 C If the unit is functioning cor rectly the alarm will clear automatically when the ambient temperature is within range If the ambient
171. input enter the input signal level i o that corresponds to the low process variable you entered for the Input range low parameter AAN SOn S o For a process input the low signal is a percentage of the full scale input range For a pulse input the high signal is expressed in Hertz Values For process inputs 99 9 to 999 8 999 to 9998 percent of full scale For pulse inputs 0 to 1999 0 to 1999 Hz This value must be less than the value for Input high signal Values in parenthesis are for serial communications and LogicPro Default 0 Modbus Address Loops 1 to 9 40632 to 40640 Parameter Number 39 LogicPro Driver Database LogicPro Address Loops 1 to 9 39 1 to 39 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Percentage Values on page 80 108 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Input Filter LOOP PROCESS UNITS ALARM SETPOINT STATUS OUTS Channel Menu LOOP PROCESS UNITS ALARM SETPOINT STATUS Loop Name LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Doc 0600 2900 2000 Chapter 5 Menu and Parameter Reference Choose the amount of filtering to apply to the process vari able before the value is logged displayed or used in the con trol calculation The input filter simulates a resistor capacitor RC filter Use it to keep the process variable
172. int and the process variable PID algorithms are not used with on off control The output variable is always off or on 0 or 100 percent With time proportioning outputs the PID algorithm calcu lates an output between 0 and 100 percent which is repre sented by turning on an output for that percent of a fixed user selected time base or cycle time The cycle time is the time over which the output is propor tioned and it can be any value from 1 to 255 seconds For example if the output is 30 percent and the cycle time is ten seconds then the output will be on for three seconds and off for seven seconds Figure 4 5 shows examples of time proportioning and distributed zero crossing DZC waveforms Distributed Zero Time Proportioning 30 Crossing 33 On Off 0 3 10 0 1 3 4 6 Seconds AC Cycle Cycle Time 10 Figure 4 5 Time Proportioning and Distribut ed Zero Crossing Waveforms Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 4 Tuning and Control Distributed Zero Crossing DZC With DZC outputs the PID algorithm calculates an output between 0 and 100 percent but the output is distributed on a variable time base For each ac line cycle the controller decides whether the power should be on or off There is no fixed cycle time since the decision is made for each line cy cle When used in conjunction with a zero crossing device such as a soli
173. iple point write function to write the values 30 40 and 50 to the proportional bands for loops 1 through 3 in a controller with address 1 The slave responds Table A 8 on page 194 Table A 7 Sample Packet for Host Query Start No of Slave Func Address Registers Byte Data 1 Data2 Data3 one Addr tion Count Hi Lo Hi Lo Hi Lo Hi Lo Hi Lo 01 10 00 00 00 03 06 00 1E 00 28 00 32 4F5F Table A 8 Sample Packet for Slave Response Start Address Number of Registers Slave Address Function CRC High Low High Low 10 00 00 00 03 80 08 194 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Glossary A AC See Alternating Current AC Line Frequency The frequency of the ac line power measured in Hertz Hz usually 50 or 60 Hz Accuracy Closeness between the value indicated by a mea suring instrument and a physical constant or known standards Action The response of an output when the process vari able is changed See also Direct Action Reverse Action Address A numerical identifier for a controller when used in computer communications Alarm A signal that indicates that the process has exceeded or fallen below a certain range around the set point For example an alarm may indi cate that a process is too hot or too cold See also Failed Sensor Alarm Global Alarm High Devia tion Alarm High Alarm Loop Alarm Low Devia tion Alarm Low
174. is address field of the response to let the master know which slave is responding The function code field of a message frame contains eight bits Valid codes are in the range of 1 to 255 decimal Not all of these codes are applicable to CPC400 controllers Current codes are described in Function Codes on page 190 When a message is sent from a master to a slave device the function code field tells the slave what kind of action to per form For example the function code might tell the slave to read the on off states of a block of digital inputs or outputs to read the data contents of a block of registers or to read the diagnostic status of a controller When the slave responds to the master it uses the function code field to indicate either a normal error free response or that some kind of error occurred called an exception response For a normal response the slave simply echoes the original function code For an exception response the slave returns a code that is equivalent to the original func tion code with its most significant bit set to a logic 1 For example a message from the master to slave to read a block of holding registers would have thisg function code 0000 0011 Hexadecimal 03 If the slave device takes the requested action without error it returns the same code in its response If an exception oc curs it returns 1000 0011 Hexadecimal 83 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Gui
175. is calculated for every ac Distributed line cycle which means that the output turns on Zero Crossi OZE 3 and off multiple times per second Use DZC with 9 solid state output devices or a Dual DAC Not rec ommended for use with electromechanical relays 116 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Heat Cool Cycle Time LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Heat Cool SDAC Signal LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT Chapter 5 Menu and Parameter Reference For a time proportioning output enter the cycle time in seconds For more information about cycle time see Time Proportioning TP on page 88 Values 1 to 255 seconds Default 10 for a heat output 10 for a cool output Modbus Address Loops 1 to 9 40683 to 40691 heat or 40700 to 40708 cool Parameter Number 42 heat or 43 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 42 1 to 42 9 heat or 43 1 to 43 9 cool For a Serial DAC output choose the type of output signal that the Serial DAC will provide Values voltage 0 or current 1 Values in parentheses are for serial communications and LogicPro Default voltage 0 Modbus Address Loops 1 to 9 44307 to 44315 heat or 44324 to 44332 cool Parameter Number 78 heat or 79 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 78 1 to 78 9 heat or 79 1 to 79 9 cool Hea
176. istor capacitor RC filter Digital Adaptive Filter A filter that rejects high frequency input signal noise noise spikes Doc 0600 2900 2000 Glossary Heat Cool Filter A filter that slows the change in the response of the heat or cool out put The output responds to a step change by going to approximately 2 3 its final value within the numbers of scans that are set Frequency The number of cycles over a specified period of time usually measured in cycles per second Also referred to as Hertz Hz G Gain The amount of amplification used in an electrical circuit Gain can also refer to the proportional P mode of PID Global Alarm Warns that one or more alarm conditions exist by activating a digital output Ground An electrical line with the same electrical poten tial as the surrounding earth Electrical systems are usually grounded to protect people and equip ment from shocks due to malfunctions Also referred to as safety ground H Hertz Hz Frequency measured in cycles per second High Deviation Alarm Warns that the process has risen more than a certain amount above set point It can be used as either an alarm or control function High Power As defined by Watlow Anafaze Any voltage above 24 V ac or V dc and any current level above 50 mA ac or mA dc High Alarm A signal that is associated with a set maximum value that can be used as either an alarm or boost con
177. its last restart clear counters operation or powerup Return Slave Message Count 14 Returns the quantity of Slave Mes messages addressed to the slave or broadcast that the slave 00 0E 00 00 sage Count has processed since its last restart clear counters operation or powerup Return Slave No Response Count 15 Returns the quantity Slave No of messages addressed to the slave for which it returned no 00 OF 0000 Response response neither a normal response nor an exception Count response since its last restart clear counters operation or powerup Force Multiple Coils 15 192 Forces each coil 0X reference in a sequence of coils to ei ther on or off When broadcast the function forces the same coil references in all attached slaves Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Appendix A Modbus Protocol Preset Multiple Registers 16 Examples Read Examples Presets values into the sequence of holding registers 4X references When broadcast the function presets the same register references in all attached slaves The data read must be sequentially located Table A 3 on page 193 shows the query and Table A 4 on page 193 shows the response Table A 3 Sample Packet for Host Query Number of 5 Start Address Points Example ave _ Function CRC Address High Law Byte Byte High Low Read process variable of loop 2 from control
178. l in put terminal the Digital inputs parameter should show that the input is off 0 When you connect the other end of the wire to controller common TB50 ter minal 3 the Digital inputs parameter should show that the input is on 7 Watlow Anafaze 151 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide Additional Troubleshooting for Computer Super vised Systems Computer Problems Communications 152 These four elements must work properly in a computer su pervised system e The controller e The computer and its EIA TIA 232 or EIA TIA 485 se rial interface e The EIA TIA 232 or EIA TIA 485 communication lines e The computer software For troubleshooting disconnect the communications line from the computer and follow the troubleshooting steps in the first section of this chapter The next few sections ex plain troubleshooting for the other elements of computer supervised systems If you are having computer or serial interface problems check the following e Check your software manual and make sure your com puter meets the software and system requirements e Check the communications interface cables and con nections Make sure the serial interface is set accord ing to the manufacturer s instructions e To test an EIA TIA 232 interface purchase an EIA TIA 232 tester with LED indicators Attach the tester between the controller and the computer When the computer sends data
179. ld 187 error checking 188 190 error checking field 187 field format 188 function field 186 functions see Modbus functions message framing 185 parity checking 188 query and response 183 184 read examples 193 write examples 194 Modbus functions 190 193 diagnostics 191 clear counters 192 force listen only mode 192 restart communications 191 return bus communication error count 192 return bus exception error count 192 return bus message count 192 return diagnostics register 191 return query data 191 return slave message count 192 Doc 0600 2900 2000 Index return slave no response count 192 force multiple coils 192 force single coil 191 preset multiple registers 193 preset single register 191 read coil status 190 read holding registers 190 read input registers 190 read input status 190 Mode outputs disabled 55 mode override Mode override D I active parameter 99 Mode override parameter 99 percent output power 119 Mode parameter 55 model number accessing through the display 103 description of 5 6 mounting see installation N noise eliminating problems with 22 isolation 22 reducing with zero cross switching 89 suppression 21 symptoms 21 O on off control control signal 88 description 82 selecting 116 Open T C cl out average parameter 64 120 Open T C ht out average parameter 64 120 Output menu 116 121 output power changing 55 on loop display 50 outputs 5 Vdc output power 175 alarm see alarms analo
180. le SCSI Length 5 4 inches 137 mm Width 4 0 inches 102 mm Height 1 5 inches 37 mm 170 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 7 Specifications 5 4 in 8 137 mm a X Co co co co co o co coe co Co co 2 Enis 2 ee s EE Bb Z 2 oo cos S ja REIN s 5 S Be 9 4 0 in SS 102 mm Q 1 5 in 37 mm Figure 7 6 TB50 Dimensions with Right Angle SCSI Cable Inputs The controller accepts analog sensor inputs which are mea sured and may be used as feedback for control loops It also accepts digital TTL inputs which may be used to trigger certain firmware features Doc 0600 2900 2000 Watlow Anafaze 171 Chapter 7 Specifications CPC400 Series User s Guide Table 7 11 Analog Inputs Number of Control Loops CPC404 5 CPC408 9 Number of Analog Inputs CPC404 4 with full range of input types plus one pulse CPC408 8 with full range of input types plus one pulse Input Sampling Rate CPC404 6 Hz 167 ms at 60 Hz 5 Hz 200 ms at 50 Hz CPC408 3 Hz 333 ms at 60 Hz 2 5 Hz 400 ms at 50 Hz Transient Voltage Isolation Between inputs 280 V ac Input to digital circuitry 530 V ac Maximum Common Mode Voltage Common Mode Rejection CMR 5 V from input to analog common gt 60 dB dc to 1 kHz and 120 dB
181. ler with the failed battery 1 Make a record of all controller settings Verify that the settings are correct because memory failure may have changed some settings 2 Clear the controller RAM see Clearing the RAM on page 153 Clearing the RAM clears all settings includ ing internal settings that may have been corrupted 3 Re enter your settings Doc 0600 2900 2000 Watlow Anafaze 145 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide Ambient Warning H W Failure Gain or Offset NOTE H W Failure Ambient 146 The ambient warning alarm indicates that the ambient temperature of the controller is too hot or cold Ambient warning occurs when the controller s temperature is in the range of 23 to 32 F or 122 to 131 F The operating limits are 32 to 122 F If the controller displays AW in the lower left corner of the display 1 Acknowledge the alarm 2 Ifthe error message remains check the ambient air temperature near the controller Adjust ventilation cooling or heating to ensure that the temperature around the controller is 32 to 122 F Ifthe unit is func tioning correctly the error will clear automatically when the ambient temperature is within range and the alarm has been acknowledged 3 If error persists make a record of the settings then clear the RAM See Clearing the RAM on page 153 4 Ifthe error is not cleared contact your supplier for fu ther troubleshooting guidel
182. loops in manual mode at 0 percent power and indicates a hardware failure This parameter is available only for serial communications and LogicPro Values 0 to 32767 counts Modbus Address 40717 Parameter Number 44 LogicPro Driver Database LogicPro Address 44 1 Watlow Anafaze 137 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide 138 Watlow Anafaze Doc 0600 2900 2000 Troubleshooting and Reconfiguring This chapter explains how to troubleshoot and reconfigure the controller When There is a Problem NOTE Doc 0600 2900 2000 The controller is only one part of your control system Of ten what appears to be a problem with the controller is re ally a problem with other equipment so check these things first e The controller is installed correctly See the Installa tion chapter e Sensors such as thermocouples and RTDs are in stalled correctly and working If you suspect your controller has been damaged do not attempt to repair it yourself or you may void the warranty If the troubleshooting procedures in this chapter do not solve your system s problems call the Technical Services department for additional troubleshooting help If you need to return the unit to Watlow Anafaze for testing and repair Customer Services will issue you an RMA number See Re turning a Unit on page 140 Watlow Anafaze 139 Chapter 6 Troubleshooting and Reconfiguring CPC400 Series User s Guide
183. mind e The CPC400 power supply available from Watlow Anafaze includes a 5V dc supply When using it to supply output loads connect the 5V dc common to the 15V dc common at the power supply e Do not exceed 24 volts e Ifyou connect the external load to earth ground or if you cannot connect it as shown in Figure 2 21 then use a solid state relay The outputs conduct current when they are on The maxi mum current sink capability is 60 mA at 24V dc The outputs cannot source current to a load Using Internal Power Supply Using External Power Supply TB50 or TB18 External 5V dc Power Supply Loads Digital Output 1 Do not connect Digital Output 2 to earth ground or equipment ground Doc 0600 2900 2000 TB50 or TB18 Control Common Loads Digital Output 1 Digital Output 2 Figure 2 21 Digital Output Wiring Watlow Anafaze 33 Chapter 2 Installation Configuring Outputs CPC400 Series User s Guide As you choose outputs for control and alarms bear in mind the following points e You can enable or disable the control outputs By de fault heat outputs are enabled and cool outputs are disabled e You can program each control output individually for on off time proportioning distributed zero crossing or Serial DAC control e You can individually program each control output for direct or reverse action e Alarm outputs other
184. monitor the network bus continu ously including during the silent intervals When the first field the address field is received each device decodes it to find out if it is the addressed device Following the last transmitted character a similar interval of at least 3 5 character times marks the end of the mes sage A new message can begin after this interval Similarly if a new message begins earlier than 3 5 charac ter times following a previous message the receiving de vice will consider it a continuation of the previous message This will set an error as the value in the final CRC field will not be valid for the combined messages An example message frame is shown in Figure A 2 Watlow Anafaze 185 Appendix A Modbus Protocol Start Address Function Data CRC Check End CPC400 Series User s Guide T1 T2 T3 T4 8 Bits 8 Bits n X 8 Bits 16 Bits T1 T2 T3 T4 Address Field Function Field 186 Figure A 2 Example Message Frame The address field of a message frame contains eight bits Valid slave device addresses are in the range of 0 to 247 decimal The individual slave devices are assigned address es in the range of 1 to 247 Address 0 is reserved for broad cast messages The CPC400 controller currently supports only 32 devices A master addresses a slave by placing the slave address in the address field of the message When the slave sends its response it places its own address in th
185. nal 5V power supply of the CPC400 When an input is connected to the controller common the input is considered on Otherwise the input is considered off Most features that use the digital inputs can be user configured to activate when an input is either on or off In the off state internal 10 kQ resistors pull the digital in puts high to 5V dc with respect to the controller com mon Table 2 4 Digital Input States and Values Stored in the Controller State Value Description Off 0 Open circuit On 1 Digital input connected to controller common 1 Read these values through serial communications and LogicPro pro grams To ensure that the inputs are reliably switched use a switching device with the appropriate impedances in the on and off states and do not connect the inputs to external power sources When off the switching device must provide an impedance of at least 11 KQ to ensure that the voltage will rise to greater than 3 7V dc When on the switch must provide not more than 1 KQ impedance to ensure the voltage drops below 1 3V dc To install a switch as a digital input connect one lead to the common terminal on the TB50 terminals 3 and 4 or TB18 terminal 2 Connect the other lead to the desired digital input terminal on the TB50 terminals 43 to 50 or TB18 terminals 16 to 18 External TB50 y Switching 7 Input s gt s Device Control Com Figure 2 26
186. nals within the stan dard range 10 to 60 mV de To accommodate other signals the input circuit must be modified When configured for thermocouple inputs 0 Q re sistors are installed in all RC locations To accommodate voltage signals outside the standard range milliamp cur rent signals or RTDs resistors are added or replaced to scale the signals to the standard range These resistor can be installed by Watlow Anafaze or by a qualified electronics technician using scaling resistors supplied by Watlow Anafaze Figure 6 6 shows the input circuit for one differential ana log input See Current Inputs on page 159 through RTD In puts on page 161 for specific instructions and resistor values for voltage current and RTD inputs When adding your own scaling resistors to the controller for voltage and RTD inputs you will have to carefully remove one of the RC resistors in order to install the resistor listed in the table RC Voltage IN e V v p Internal RP 5 V dc To CPC400 Analog Reference RD Circuitry Input Terminal RC RTD IN VV gt Come V Figure 6 6 Input Circuit Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Current Inputs Doc 0600 2900 2000 Chapter 6 Troubleshooting and Reconfiguring For each current input you must install a resistor The val ue of the resistor must be correct for the expected input range Install the resistor in the li
187. nclude these jumpers Neither WAT VIEW nor LogicPro software requires these jumpers Figure 2 30 Connecting One CPC400 to a Com puter Using EIA TIA 232 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation EIA TIA 485 Interface To communicate with more than one CPC400 series con troller on a controller network or to use communication ca ble lengths greater than 50 feet 15 m from PC to controller you must use EIA TIA 485 communications When using EIA TIA 485 communications you must at tach a 232 to 485 converter to the computer Figure 2 31 and Figure 2 32 show the recommended system wiring 232 to 485 Converter TXA TDA TX TXB TDB TX Personal Computer RXA RDA RX RXB RDB RX connect shield to CPC400 Figure 2 31 Four Wire EIA TIA 485 Wiring 232 to 485 First Last Converter CPC400 CPC400 TXA TDA TX TXB TDB TX Personal Computer RXA RDA RX RXB RDB RX connect shield to CPC400 Figure 2 32 Two Wire EIA TIA 485 Wiring Doc 0600 2900 2000 Watlow Anafaze 43 Chapter 2 Installation Cable Recommendations CPC400 Series User s Guide Watlow Anafaze recommends Belden 98438 cable or its equivalent This cable includes three 24 AWG 0 2 mm shielded twisted pairs It should carry signals of up to 19200 baud with acceptable losses for up to 4000 feet 1220 m EIA TIA 485 Network Connections 232 Communications Watlow Anafaze rec
188. ncluding set points and alarm limits Nonlinear Output Curves Select either of two non linear output curves for each control output Pulse Input Use the pulse input for precise control of motor or belt speed Low Power Shutdown The controller shuts down and turns off all outputs when it detects the input volt age drop below the minimum safe operating level Process Variable Retransmit Scale a temperature or process and convert it to an analog output for exter nal devices such as chart recorders Two Zone Cascade Control Control thermal sys tems with long lag times which cannot be accurately controlled with a single loop Ratio or Offset Control Control one process as a ra tio or offset of another process Remote Analog Set Point Scale an external voltage or current source to provide a set point for a loop You may have received one or more of the following compo nents See Figure 2 1 on page 12 for CPC400 configuration information CPC400 series controller Controller mounting kit TB50 with 50 pin SCSI cable EIA TIA 232 or EIA TIA 485 communications cable Power supply with mounting bracket and screws Serial DAC digital to analog converter Special input resistors installed in CPC400 User s guide Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Number of Loops Chapter 1 System Overview 4 4 loops 8 8 loops Controller Type 1 Standard firmware Terminal Block
189. nder temperature or over temperature fault If a hazard ous condition is detected the limit controller sends a signal to open the contactor The safety shutdown device limit controller and contactor must be independent from the process control equipment The controller may fail in a 0 percent or 100 per cent output power state To prevent death per sonal injury equipment damage or property damage install external safety shutdown devices that operate independently from the process con trol equipment With proper approval and installation thermal fuses may be used in some processes Watlow Anafaze 9 Chapter 1 System Overview Power Fail Protection CPC400 Series User s Guide In the occurrence of a sudden loss of power the CPC400 controller can be programmed to reset the control outputs to off this is the default The controller can also be config ured to restart to data stored in memory A memory based restart might create an unsafe process condition for some installations Use a memory based re start only if you are certain your system will safely restart See Power Up Loop Mode on page 100 When using a computer or host device you can program the software to automatically reload desired operating con stants or process values on powerup These convenience features do not eliminate the need for independent safety devices Contact Watlow Anafaze immediately if you have any ques tions about system safety o
190. new job was supposed to be loaded If not check the BCD job load setup Check the settings of the BCD job load parameters in the Global setup menu Use the Digital inputs parameter in the I O tests menu to test the BCD job load input s Check the device that is used to activate job selection All loops are in man ual mode at 0 per cent power Intermittent power Check wiring and service See Wiring the Power Supply on page 24 Use a separate dc supply for the controller Provide backup power uninterruptible power system In the Global menu set the Power up loop mode parameter to from memory if safe for your application See Power Up Loop Mode on page 100 Analog reference voltage overloaded Disconnect any wiring from the 5V Ref connection on TB1 Hardware failure Check the controller display for a hardware alarm See System Alarms on page 143 Logic does not run No logic program loaded Load a logic program For more informa tion see the LogicPro User s Guide Controller not set to run logic on powerup Run the logic program see Logic Program on page 99 If desired set the controller to start the logic program automatically upon powerup see Power Up With Logic on page 100 Controller does not behave as expected Corrupt or incorrect values in RAM Clear the RAM See Clearing the RAM on page 153 144 Watlow Anafaze Doc 0600 2900 2000 CPC400 Ser
191. nications and Log icPro this parameter is stored as the fifth bit of the system command word so set or read only that bit Default on 0 Modbus Address 40790 fifth bit Parameter Number 49 LogicPro Driver Database LogicPro Address 49 1 fifth bit Table 5 6 Digital Output Alarm Polarity Display Modbus or Value Logic Value Description Digital alarm outputs sink current to analog common when an alarm occurs Digital alarm outputs stop sinking current to analog common when an alarm occurs Model and Firmware Version LOOP PROCESS UNITS ALARM SETPOINT STATUS OUT NOTE Doc 0600 2900 2000 The last parameter in the Global setup menu shows the controller model CPC404 or CPC408 the firmware ver sion Vxx xxX and the flash memory checksum CS xxxx To retrieve the firmware version through serial communi cations or LogicPro see Firmware Version on page 135 The checksum is not affected by loading or changing a logic program The checksum is de termined only by the content of the closed loop control program Watlow Anafaze 103 Chapter 5 Menu and Parameter Reference Input Menu CPC400 Series User s Guide LOOP PROCESS UNITS Use the Input menu to configure the process input Input type Engineering units ALARM SETPOINT STATUS Input Type e Scaling calibration and filtering LOOP PROCESS UNITS Choose t
192. nputs 161 for voltage inputs 30 160 installing 157 162 scrolling rectangle on loop display 50 SCSI cable 7 8 clearance 13 14 167 installing 26 Sensor fail cool output parameter 119 and failed sensor alarm 64 mode override 99 reversed thermocouple detection 106 thermocouple short alarm 101 Sensor fail heat output parameter 119 and failed sensor alarm 64 mode override 99 reversed thermocouple detection 106 thermocouple short alarm 101 sensor inputs calibration offset 105 engineering units 105 failed sensor alarms 142 filter 109 specifications 172 troubleshooting 148 type 104 wiring 27 81 Serial DAC agency compliance 181 Doc 0600 2900 2000 Index clock input 181 configuring outputs 162 configuring the controller output 116 dimensions 19 181 environment 180 input specifications 181 jumper positions 162 mounting 19 output specifications 182 process variable retransmit 68 setup parameters 117 118 specifications 180 weight 180 wiring 40 41 set point changing 54 on loop display 50 remote analog set point 76 78 using cascade control to set 69 73 using differential control to set 75 76 using ratio control to set 73 78 shutdown devices 9 Soft Bool parameter 131 Soft Booleans menu 131 Soft int parameter 130 Soft integers menu 130 solid state relays 5 Vdc power from controller 175 distributed zero crossing 89 troubleshooting controller connections 150 specifications 165 controller inpu
193. nstructions 42 function block instructions 64K flash nonvolatile Program Execution Logic program runs concurrently with closed loop control Read Write Access Logic Programming Software Controller I O and closed loop control parameters LogicPro Programming Environment Windows 95 Windows 98 Windows NT Windows 2000 Table 7 14 Thermocouple Range and Resolution Accuracy at Accuracy at Type Range in F Range in C F c F c J 350 to 1400 212 to 760 2 2 1 2 3 3 1 8 K 450 to 2500 268 to 1371 2 4 1 3 3 8 2 1 T 450 to 750 268 to 399 2 9 1 6 5 8 3 2 S 0 to 3200 18 to 1760 5 0 2 8 8 8 4 9 R 0 to 3210 18 to 1766 5 0 2 8 8 8 4 9 B 150 to 3200 66 to 1760 7 2 4 0 22 1 12 3 E 328 to 1448 200 to 787 1 8 1 0 2 9 1 6 True for 10 percent to 100 percent of span except type B which is specified for 800 F to 3200 F Table 7 15 RTD Range and Resolution M jemeni Accuracy at Accuracy at Range Range Resolution easu j 25 C Ambient 0 to 50 C Ambient in F in C in C Tompa Mron F Cc F c 328 0 200 0 25 0 9 0 5 1 2 0 5 to to 0 07 1150 0 621 1 400 2 7 1 5 4 1 2 2 Doc 0600 2900 2000 Watlow Anafaze 173 Chapter 7 Specifications CPC400 Series User s Guide Table 7 16 Input Resistance for Voltage Inputs Range Input Resistance 0 to 12V 85 kQ 0 to 10V 50 KQ 0 to
194. nt above or below the set point it never reaches the set point This behavior is known as offset or droop When using proportional control configure the manual re set parameter for the power level required to maintain set point Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 4 Tuning and Control Set Point a Offset A Proportional Band ea Process Variable Figure 4 2 Proportional Control Proportional and Integral Control PI Doc 0600 2900 2000 With proportional and integral control the integral term corrects for offset by repeating the proportional band s er ror correction until there is no error For example if a pro cess tends to settle about 5 F below the set point appropriate integral control brings it to the desired setting by gradually increasing the output until there is no devia tion Set Point Pa i Overshoot Proportional Band Ss Process Variable Figure 4 3 Proportional and Integral Control Proportional and integral action working together can bring a process to set point and stabilize it However with some processes the user may be faced with choosing be tween parameters that make the process very slow to reach set point and parameters that make the controller respond quickly but introduce some transient oscillations when the set point or load changes The extent to which these oscil lations of the process varia
195. o cancel chang es On the loop display the new set point value is shown on the second line PROCESS UNITS Set Point SETPOINT STATUS OUT Other Methods of Changing the Set Point You can use other methods to change the set point 54 Cascade Control Use the output of one loop to ad just the set point of another loop See Setting Up Cas cade Control on page 69 Ratio Control Use the process variable of one loop multiplied by a ratio as the set point of another loop See Setting Up Ratio Control on page 73 Differential Control Use the process variable ofone loop plus an offset value as the set point of another loop See Setting Up Differential Control on page 75 Remote Analog Set Point Use an external device such as a PLC to control the set point See Setting Up Remote Analog Set Point on page 76 Serial Communications Use a computer program or operator interface panel to change the set point See the Appendix Modbus RTU Logic Program Use a LogicPro logic program to con trol the set point The logic program overrides set point values that are set by other means See the Log icPro User s Guide Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup Changing the Control Mode and Output Power The CPC400 has four control modes e Auto The controller automatically adjusts the output power according to the set point process variable and
196. o parameter in the Control menu e Connect the digital input to the de common terminal on the controller The CPC400 has four process alarms each of which you can configure separately for each loop e Alarm low e Alarm high e Low deviation alarm e High deviation alarm What Happens if a Process Alarm Occurs Process Alarm Outputs Doc 0600 2900 2000 If a process alarm occurs the controller does the following e Shows an alarm code on the display See Alarm Dis plays on page 51 e Activates the global alarm output See Global Alarm on page 67 e Activates the digital output that is assigned to the pro cess alarm if applicable The digital output remains active until the process variable returns within the corresponding limit and hysteresis The alarm output deactivates when the process returns to normal Any digital output that is not used as a control output can be assigned to one or more process alarms The controller activates the output if any alarm assigned to the output is active Process alarm outputs are non latch ing that is the output is deactivated when the process re turns to normal whether or not the alarm has been acknowledged Specify the active state of process alarm outputs at the D O alarm polarity setting in the Global setup menu Watlow Anafaze 65 Chapter 3 Operation and Setup CPC400 Series User s Guide Alarm Function Standard Alarm or Boost Output You can configure
197. o the digital in put terminal the digital input test should show that the input is off open b When you connect the other end of the wire to the controller common TB50 terminal 3 or TB18 ter minal 2 the digital input test should show that the input is on closed This section describes how to properly connect thermocou ples RTDs current and voltage inputs to the controller The controller can accept any mix of available input types Some input types require that special scaling resistors be installed generally done by Watlow Anafaze before the controller is delivered All inputs are installed at the CH input connectors TB1 at the back of the controller The illustrations below show the connector locations for all CPC400 series controllers Never run input leads in bundles with high power wires or near other sources of EMI This could in ductively couple voltage onto the input leads and damage the controller or could induce noise and cause poor measurement and control Watlow Anafaze 27 Chapter 2 Installation CPC400 Series User s Guide 719 111413115 17 119 21 23 25 CHICH C Re Re Ref Re Re Gnd RX CPC404 3 4 o ser ser ser ser CE IN IN m ved ved Com ved ved pyBiRxA 6 18 012141618 20 22 2426 MADE C CH CH C Re Re 5 Re Re Gnd TX IN THE m N nll 3o ofo 4 o ser ser ser ser USA IN IN m ved ved Ref ved ved T
198. ocess The controller turns an output on or off when the process vari able reaches limits around the desired set point This limit is adjustable For example if the set point is 1000 F and the control hys teresis is 20 F the heat output switches on when the pro cess variable drops below 980 F and off when the process rises above 1000 F A process using on off control cycles around the set point Figure 4 1 illustrates this example Heat Off Heat Off eee cae e X Set Point 1000 F Set Point Hysteresis Oates OMIM a See 980 F I I I l I I Off Pde ate Leal Figure 4 1 On Off Control Proportional control eliminates cycling by increasing or de creasing the output proportionally with the process vari able s deviation from the set point The magnitude of proportional response is defined by the proportional band Outside this band the output is either 100 percent or 0 percent Within the proportional band the output power is proportional to the process variable s devi ation from the set point For example if the set point is 1000 F and the proportional band is 20 F the output power is as follows e Opercent when the process variable is 1000 F or above e 50 percent when the process variable is 990 F e 75 percent when the process variable is 985 F e 100 percent when the process variable is 980 F or be low However a process that uses only proportional control set tles at a poi
199. oci s ci dessous 89 336 EEC Directive de compatibilit lectromagn tique EN 61326 1995 Appareillage lectrique pour la mesure la commande et l usage de laboratoire Prescriptions relatives a la Compatilit Electro Magn tique Classe A EN 61000 3 2 1995 EN 61000 3 3 1995 EN 61000 4 2 1995 EN 61000 4 3 1997 EN 61000 4 4 1995 EN 61000 4 5 1995 EN 61000 4 6 1996 EN 61000 4 11 1994 Limites d mission de courant harmonique Limites de fluctuation de tension D charge lectrostatique Insensibilit a l nergie rayonn e Courants lectriques transitoires rapides Insensibilit aux surtensions Insensibilit a l nergie par conduction Insensibilit aux chutes subites aux courtes interruptions et aux variations de tension ENV 50204 1995 T l phone cellulaire Erklart daB das folgende Produkt Beschreibung Serie CPC400 Modellnummer n 40 4 oder 8 1 0 1 oder 2 0 oder 2 0 1 2 oder 3 0 1 2 oder 3 0 1 oder 2 beliebige Buchstaben oder Ziffern Deutsch Klassifikation Installationskategorie Il Emissionsgrad II Nennspannung 12 bis 24 Vdc Nominaler Stromverbrauch max 610 mA Erf llt die wichtigsten Normen der folgenden Anweisung en der Europ ischen Union unter Verwendung des wichtigsten Abschnitts bzw der wichtigsten Abschnitte der normalisierten Spezifikationen und der untenstehenden einschlagigen Dokumente 89 336 EEC Elektromagnetische Ubereinstimmungsanweisung
200. ode override 99 remote job selection 97 98 restoring automatic control after sensor failure 114 specifications 174 technical information 36 testing 27 131 troubleshooting 151 wiring 36 Digital inputs parameter 27 131 digital outputs polarity for alarms 103 specifications 175 testing 26 132 troubleshooting 151 will not turn on 21 wiring 32 33 dimensions controller 166 Dual DAC 19 178 179 power supply 177 power supply bracket 18 Serial DAC 19 181 TB50 168 171 direct action see control outputs Disp format parameter 106 display 50 53 control modes 50 does not work 143 job display 53 loop information 50 Doc 0600 2900 2000 CPC400 Series User s Guide navigation 48 process variable not correct 143 148 scanning loop 51 toggling between loop and job displays 53 distributed zero crossing 89 116 droop 112 Dual DAC configuring outputs 163 164 dimensions 19 178 179 environment 178 input specifications 179 jumper settings 163 mounting 19 output specifications 180 specifications 178 180 weight 178 wiring 39 40 dust 13 DZC see distributed zero crossing E earth see ground EIA TIA 232 41 42 connections 42 jumper configurations 157 jumpers in connectors 42 troubleshooting 152 see also communications EIA TIA 485 43 232 to 485 converter 43 44 jumper configurations 157 network connections 44 45 signal common 45 termination 45 troubleshooting 152 see also communications ele
201. og outputs and digital outputs con nected to panel mounted solid state relays e Analog outputs usually use a twisted pair e Digital outputs usually have 9 to 20 conductors de pending on wiring technique After you wire outputs to the TB50 install the cable tie wraps to reduce strain on the connectors Each row of ter minals has a cable tie wrap hole at one end Thread the ca ble tie wrap through the cable tie wrap hole Then wrap the cable tie wrap around the wires attached to that termi nal block The CPC400 provides dual control outputs for up to eight loops By default heat outputs are enabled and cool out puts are disabled If the heat or cool output is disabled for a loop then the output is available for alarms or program mable logic The CPU watchdog timer output can be used to monitor the state of the controller see CPU Watchdog Timer on page 35 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation Table 2 3 Digital Output States and Values Stored in the Controller State Value Description Off 0 Open circuit On 1 Sinking current to controller common 1 Read and write these values through serial communications and Log icPro programs All digital outputs sink current to controller common when on The load may powered by the 5V dc supplied by the controller at the TB50 or by an external power supply When using an external power supply bear in
202. ogicPro See Dec imal Placement for Numeric Values on page 80 Table 5 13 Values for the Control Hysteresis and Deviation Alarm Parameters Input Type Display Format Values Default Thermocouple n a 0 to 500 5 RTD n a 0 to 500 0 5 0 999 to 3000 0 to 500 5 9999 to 30000 0 to 5000 50 999 9 to 3000 0 0 0 to 500 0 5 0 Process or Pulse 99 99 to 300 00 0 00 to 50 00 0 50 9 999 to 30 000 0 000 to 5 000 0 050 0 9999 to 3 0000 0 0000 to 0 5000 0 0050 Doc 0600 2900 2000 Watlow Anafaze 113 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Restore Automatic Mode Loor PROGESS UNITS Choose a digital input If the input is connected to control at boi ler common the loop returns to automatic control mode af ter a failed sensor is repaired if it was in automatic mode and the digital input was on when the sensor failure oc curred Values enabled by D I1 to enabled by D I8 1 to 8 or dis abled 0 Values in parentheses are for serial communica tions and LogicPro Default disabled 0 Modbus Address Loops 1 to 9 44460 to 44468 Parameter Number 87 LogicPro Driver Database LogicPro Address Loops 1 to 9 87 1 to 87 9 ALARM SETPOINT STATUS OUT Tune Band Toor PROCESS UNS Set the controller to automatically adjust the range around T i set point over which the controller will continuously tune the control parameters or enter a fixed value This
203. ogicPro Size LogicPro Farameler Modb s Address Number Driver bits Address Alarms page 121 Alarm High Set Point 40307 to 40315 18 Database 16 18 1 to 18 9 See Alarm Acknowl Alarm High Function edge on pagS Jaana Alarm Function on page 133 Alarm High Output 40426 to 40434 25 Database 16 25 1 to 25 9 High Deviation Value 40341 to 40349 20 Database 16 20 1 to 20 9 See Alarm Acknowl High Deviation edge on page 132and Function Alarm Function on page 133 High Deviation Output 40460 to 40468 27 Database 16 27 1 to 27 9 Low Deviation Value 40358 to 40366 21 Database 16 21 1 to 21 9 See Alarm Acknowl Low Deviation edge on page 132and Function Alarm Function on page 133 Low deviation Output 40477 to 40485 28 Database 16 28 1 to 28 9 Alarm Low Set Point 40324 to 40332 19 Database 16 19 1 to 19 9 See Alarm Acknowl Alarm Low Function edge onpage T3zand Alarm Function on page 133 Alarm Low Output 40443 to 40451 26 Database 16 26 1 to 26 9 Alarm Hysteresis 40375 to 40383 22 Database 16 22 1 to 22 9 Alarm Delay 40562 to 40570 33 Database 16 33 1 to 33 9 Process Variable Retransmit page 125 Heat Output 44478 to 44486 89 Database 16 89 11081 9 Retransmit Gool Output 44495 to 44503 90 Database 16 90 1 to 90 9 Retransmit peal Netshow 44546 to 44554 93 Database 16 93 1 to 93 9 Process Variable Soe en 44563 to 44571 94 Database 16 94 1 t0 94 9 Process Variable Heat Retransmit High 44542 to 44520 91 Data bas
204. ol 73 78 application example differential control 76 ratio control 74 remote analog set point 77 differential control 75 76 parameters 128 remote analog set point 76 78 setting up 74 Ratio high SP parameter 129 Ratio low SP parameter 129 Ratio master loop parameter 128 Ratio menu 128 130 Ratio SP diff parameter 130 read coil status 190 read holding registers 190 read input register 190 read input status 190 reading and writing in LogicPro 78 Ref terminals see reference voltage reference voltage 30 remote analog set point see ratio control 206 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide repair returning controller for 140 reset integral see integral response Modbus 184 RestoreAuto parameter 65 114 retransmit see process variable retransmit returning the controller 140 reverse action see control outputs Reversed T C detect parameter 64 106 RFI see noise RMA number 140 RO alarm code 52 RS alarm code 52 RS 232 see EIA TIA 232 RS 485 see EIA TIA 485 RTD accuracy 173 alarm messages 52 calibration offset 105 range 173 recommended type 29 resolution 173 scaling resistors 29 161 troubleshooting 149 wiring 29 RTD open alarm 52 65 RTD shorted alarm 52 65 S safety external safety devices 9 output status on power up 10 symbols and signal words in this manual 2 Save setup as job parameter 96 scaling resistors for current inputs 30 159 for RTD inputs 29 161 for thermistor i
205. ommends that you use a single daisy chain configuration rather than spurs Run a twisted pair cable from the host or converter to the first CPC400 and from that point run a second cable to the next CPC400 and so on See Figure 2 33 If necessary for servicing instead of connecting each con troller directly to the next install a terminal strip or con nector as close as possible to each CPC400 run a communications cable from one terminal strip to the next and connect the controllers to the bus with short lengths of cable To avoid unacceptable interference use less than 10 feet 3 m of cable from the terminal or connector to the CPC400 serial port Refer to Termination on page 45 for more on terminating resistors Connect the shield drain to earth ground only at the com puter or host end 485 Communications L_ es Port D D _ 232 t0 485 Converter a 44 Shielded Twisted Pair Cable First CPC400 Second CPC400 Last CPC400 Figure 2 33 Recommended System Connections Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Signal Common Termination Doc 0600 2900 2000 Chapter 2 Installation For usual installations do not connect the de commons of the controllers together or to the converter or host device For EIA TIA 485 signals to be transmitted properly each pair must be properly terminated The value of the termi nation resistor should be equal to the im
206. ommon Mode Voltage Table 7 36 Serial DAC Analog Output Specifications Measured between output terminals and controller common 1000V Resolution 15 bits plus polarity bit for voltage outputs 0 305 mV for 10V output range 0 00061 mA for 20 mA output range Accuracy Calibrated for Voltage Output For voltage output 0 005V 0 05 at full scale For current output 0 1 mA 0 5 at full scale Temperature coefficient Isolation Breakdown Voltage 440 ppm C typical 1000V between input power and signals Current 0 to 20 mA 500 Q load max Voltage Output Response Time 0 to 10V dc with 10 mA source capability 1 ms typical Update Rate Once per controller A D cycle nominal Twice per second maximum for 60 Hz clock rate Output changes are step changes due to the fast time con stant All Serial DAC loop outputs are updated at the same time 182 Watlow Anafaze Doc 0600 2900 2000 Appendix A Modbus Protocol Master Slave Model Doc 0600 2900 2000 The serial communications port on the CPC400 supports the Modbus RTU protocol This protocol defines the mes sage structure for all communication packets The protocol is the same for both EIA TIA 232 and EIA TIA 485 serial interfaces Modbus ASCII is not supported Up to 32 CPC400 controllers may be connected on a network Watlow Anafaze offers a Modbus driver for use with Win dows based software applica
207. on page 65 Values For a thermocouple or RTD input any value with in the input range see Table 5 7 on page 104 For a pro cess or pulse input any value between the Input range low and Input range high parameters Default 0 Modbus Address Loops 1 to 9 40324 to 40332 Parameter Number 19 LogicPro Driver Database LogicPro Address Loops 1 to 9 19 1 to 19 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 ALARM SETPOINT STATUS OUT Alarm Low Function D NA Choose whether the alarm functions as an alarm or as a 11 Alarm low boost output or disable the alarm PPE j Values See Table 5 16 on page 122 ALARM SETPOINT STATUS OUT Default off Modbus and LogicPro See Alarm Acknowledge on page 132 and Alarm Function on page 133 Alarm Low Output Toor PROCESS UNITS Choose a digital output to activate when the low alarm oc G1 larm Le 3 curs You cannot choose an output that is in use for closed loop control or for the Serial DAC clock AAR SPORT SATS oT Values none 0 or output 1 to 34 1 to 34 Values in pa rentheses are for serial communications and LogicPro Default none 0 Modbus Address Loops 1 to 9 40443 to 40451 Parameter Number 26 LogicPro Driver Database LogicPro Address Loops 1 to 9 26 1 to 26 9 Alarm Hysteresis roo process UNITS Enter the amount by which the process variable must re iHi A i
208. one cascade control where the primary output is used for the primary heat control and the cascaded output is used for boost heat You can use the primary heat output for both control and for determining the set point of the sec ondary loop How the Secondary Set Point is Determined Doc 0600 2900 2000 The set point of the secondary loop is determined according to the heat and cool output values from the primary loop and user specified cascade parameters Watlow Anafaze 69 Chapter 3 Operation and Setup 70 Set Point of Secondary Loop Engineering Units Set Point of the Secondary Loop CPC400 Series User s Guide If the primary loop has both heat and cool outputs then the set point of the secondary loop is equal to the Cascade low SP parameter when the cool output is at 100 percent and is equal to the Cascade high SP when the heat output is at 100 percent See Figure 3 9 If the primary loop has only a heat output then the set point of the secondary loop is equal to the Cascade low SP parameter when the heat output is at 0 percent and is equal to the Cascade high SP parameter when the heat output is at 100 percent See Figure 3 10 If the primary loop has only a cool output then the set point of the secondary loop is equal to the Cascade low SP parameter when the cool output is at 100 percent and is equal to the Cascade high SP parameter when the cool output is at 0 percent High Set Point Low Set Point
209. ons Storage Temperature 20 to 60 C Operating Temperature 0 to 70 C Humidity 10 to 95 non condensing Table 7 32 Serial DAC Physical Specifications Weight 0 76 lb 0 34 kg Length 5 4 inches 137 mm Width 3 6 inches 91 mm Height 1 8 inches 44 mm 180 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 7 Specifications 0 162 in diameter lt gt in 0 3 0 4 in 8mm 10mm Figure 7 9 Serial DAC Dimensions Table 7 33 Serial DAC Agency Approvals Compliance ee Electromagnetic Compatibility EMC CE Directive directive 89 336 EEC f UL 916 Standard for Energy Manage UL and C UL nent Equipment File E177240 Serial DAC Inputs The Serial DAC requires a proprietary serial data signal and the clock signal from the CPC400 via the TB50 Any control output can be configured to provide the data signal The Serial DAC also requires a 5 V dc power input Table 7 34 Serial DAC Inputs Data 4 mA maximum to DC COM Open collector or HC CMOS logic levels Clock 0 5 mA maximum to DC COM Open collector or HC CMOS logic levels Doc 0600 2900 2000 Watlow Anafaze 181 Chapter 7 Specifications CPC400 Series User s Guide Table 7 35 Serial DAC Power Requirements Voltage 4 75 to 5 25 V dc 300 mA maximum Current 210 mA typical 20 V dc out Serial DAC Analog Outputs Absolute Maximum C
210. param eter is provided for use only in the unlikely event that the controller is unable to automatically tune and stabilize at set point This may occur with very fast processes In that case set the Tune Band to a large value such as 300 Other wise leave this parameter set to auto Values auto 0 and 1 1 to 999 999 Default auto 0 Modbus Address Loops 1 to 9 46542 to 46550 Parameter Number 144 LogicPro Driver Database LogicPro Address Loops 1 to 9 144 1 to 144 9 ALARM SETPOINT STATUS OUT Tune Gain oor PROCESS UNTS Choose the target responsiveness of the control algorithm T There are six settings ranging from 1 with the least ag gressive response and least potential overshoot lowest gain to 6 with the most aggressive response and most po tential for overshoot highest gain The default setting 3 is recommended for loops with thermocouple feedback and moderate response and overshoot potential Values 1 1 to 6 6 Default 3 3 Modbus Address Loops 1 to 9 46559 to 46567 Parameter Number 145 LogicPro Driver Database LogicPro Address Loops 1 to 9 145 1 to 145 9 ALARM SETPOINT STATUS OUT 114 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Process Variable Temperature Overshoot Reduction Loop PROCESS UNITS ALARM SETPOINT STATUS OUT Control Type LOOP PROCESS UNITS ALARM SETPOINT STATU
211. parameter 117 Clear RAM message 153 clearance see installation clearing RAM 153 clock input 181 closed loop control 57 58 ClPwr limit time parameter 119 coil force multiple coils 192 force single coil 191 Comm baud rate parameter 102 Comm parity parameter 102 communications baud rate 102 cable 8 44 controller address 101 functions see Modbus functions installation 41 jumper configurations 157 Modbus see Modbus Watlow Anafaze 201 Index parity 102 restarting 191 software problems 153 troubleshooting 152 153 wire sizes and lengths 21 see also EIA TIA computer see communications control algorithms 81 84 on off 82 proportional P 82 87 proportional with integral PI 83 87 proportional integral and derivative PID 84 87 Control menu 111 115 control mode as shown on display 50 changing 55 unexpected switch from automatic to manual 144 control outputs 88 90 action 118 control algorithms see control algorithms curve 120 cycle time 117 direct action 90 118 distributed zero crossing 89 116 Dual DAC see Dual DAC filter 89 113 hysteresis 113 limit 118 119 on off 88 116 reverse action 90 118 SCRs 34 Serial DAC see Serial DAC solid state relays 34 status on powerup 100 time proportioning 88 116 troubleshooting 150 type 116 wiring 34 Control ratio parameter 129 Control Type parameter 115 controller agency compliance 165 clearance 13 167 connecting to TB50 26
212. pe on page 116 for more information about the output types available Heat and Cool Outputs In some applications two outputs may be controlled ac cording to one input For example a loop with both heat and cooling water flow might be controlled according to feedback from one thermocouple In such systems the control algorithm includes provisions to avoid switching too frequently between the heat and cool outputs The on off algorithm uses a hysteresis parameter The PID algorithms use both a hysteresis parameter and Doc 0600 2900 2000 Watlow Anafaze 57 Chapter 3 Operation and Setup CPC400 Series User s Guide the PID parameters to determine when control switches be tween heating and cooling How to Set Up Closed Loop Control The following are the basic steps to set up closed loop con trol for a typical control loop 1 Use the Input menu to specify the type of input signal and if necessary how to scale that signal 2 If using on off or both heat and cool outputs use the Control menu to specify the control hysteresis 3 Use the Output menu to enable the heat and or cool outputs and to specify the control output signal form 4 Enter a set point See Changing the Set Point on page 54 5 Put the channel in Tune mode See Changing the Con trol Mode and Output Power on page 55 For more information about the setup menus and parame ters see Chapter 5 Menu and Parameter Reference Setting Up a Process or
213. pedance of the communications cable used Values are typically 150 to 200 Q The receive lines at the converter or host device should be terminated in the converter the connector to the host de vice or the device itself Typically the converter documenta tion provides instructions for termination Use a terminating resistor on the receive lines on the last controller on the 485 line Set jumper JU1 in position B to connect a 200 Q resistor across the receive lines See Changing the Hardware Communications Protocol on page 157 Watlow Anafaze 45 Chapter 2 Installation CPC400 Series User s Guide 46 Watlow Anafaze Doc 0600 2900 2000 Doc 0600 2900 2000 Operation and Setup This chapter explains how to use the keypad and display to operate the controller This chapter also explains the basic concepts that you need to understand to set up and operate the controller Watlow Anafaze 47 Chapter 3 Operation and Setup CPC400 Series User s Guide General Navigation Map The normal display on the CPC400 is the loop display Fig ure 3 1 shows how to navigate from the loop display to other displays menus and parameters Scanning Loop Display PROCESS UNITS Loop Display Hola LOOP PROCESS UNITS kii Sal L PROCESS UNITS ALARM SETPOINT STATUS OUT A SETPOINT STATUS OUT Job Display if a job is loaded LOOP PROCESS UNITS O O HO d PLPA Pad ALARM SETPO
214. ponds to 100 0 percent Divide values by ten when reading and multiply values by ten be fore writing 80 Watlow Anafaze Doc 0600 2900 2000 Tuning and Control Control Algorithms Doc 0600 2900 2000 NOTE This chapter describes the different methods of control available with the CPC400 This chapter covers control al gorithms control methods PID control starting PID val ues and tuning instructions to help appropriately set control parameters in the CPC400 system For more information about PID control consult the Wat low Anafaze Practical Guide to PID This section explains the algorithms available for control ling a loop The control algorithm dictates how the controller responds to an input signal Do not confuse control algorithms with control output signals for example analog or pulsed de voltage There are several control algorithms available e On off e Proportional P e Proportional and integral PI e Proportional with derivative PD e Proportional with integral and derivative PID P PI or PID control is necessary when process variable cy cling is unacceptable or if the load or set point varies For any of these control algorithms to function the loop must be in automatic mode Watlow Anafaze 81 Chapter 4 Tuning and Control On Off Control Process Variable Proportional Control P 82 CPC400 Series User s Guide On off control is the simplest way to control a pr
215. pped 0 Modbus Address 49481 Parameter Number 150 LogicPro Driver Database LogicPro Address 150 1 Watlow Anafaze 99 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Power Up Alarm Delay Toor PROCESS UNS Specify how long to delay high low and deviation alarms on T p all loops during powerup This feature does not delay failed sensor alarms FIAN SEON STATUS oa Values 0 to 60 minutes Default 0 Modbus Address 40409 Parameter Number 24 LogicPro Driver Database LogicPro Address 24 1 Power Up Loop Mode 100 PRODESS UNITS Choose the power up state of the control outputs i Values See Table 5 5 For serial communications and Log iti cin icPro this is a bit wise parameter stored as the first bit of AA SoN SRS oT the system command word so set or read only that bit Default manual 0 0 Modbus Address 49790 first bit Parameter Number 49 LogicPro Driver Database LogicPro Address 49 1 first bit A WARNING Do not set the controller to start from memory if it might be unsafe for the control outputs to be on upon power up Table 5 5 Power Up Loop Modes Display Modbus or nti Value LogicPro Value Description manual 0 0 Upon powerup all loops are set to manual mode at 0 per cent output Upon powerup all loops are restored to the previous control from memory 1 mode and output power level Power Up With Logic
216. pplication e Set up the parameters in the Cascade menu See Cascade Menu on page 127 Cascade contro cannot be used on the same con trol loop as ratio control Water Tank A tank of water has an inner and outer thermocouple The outer thermocouple is located in the center of the water The inner thermocouple is located near the heating ele ment The desired temperature of the water is 150 F which is measured at the outer thermocouple Using cascade control the outer thermocouple is used on the primary loop in this example loop 1 and the inner thermocouple is used on the secondary loop loop 2 The heater is controlled by loop 2 As the temperature of the inner thermocouple drops from 150 to 140 F the set point of the secondary loop should rise from 150 to 190 F Table 3 10 and Table 3 11 show the setup for this applica tion Watlow Anafaze 71 Chapter 3 Operation and Setup CPC400 Series User s Guide Loop 1 Primary Cascade Loop Loop 2 Secondary Cascade Loop Water Loop 1 Input Process Variable a Outer Loop 2 PID Output Thermocouple Loop 2 Input Process Variable CPC400 Heater lt Ney Inner Thermocouple Power Controller Figure 3 11 Example Application Using Cas cade Control Table 3 10 Parameter Settings for the Primary Loop in the Cascade Example Menu Parameter Value Comment
217. pter 2 Installation Use 18 or 20 AWG 0 5 or 0 75 mm for all thermocouple inputs Most thermocouple wire is solid unshielded wire When using shielded wire ground one end only Whi CH IN Type J CHIN Red Thermocouple Shield if present NNN Earth Ground at Process End Figure 2 15 Thermocouple Connections A CAUTION Connect the earth ground terminal on TB2 to a good earth ground but do not connect the analog common to earth ground The CPC400 uses a floating analog common for sensor measure ments The noise protection circuits on the sen sor inputs function correctly only if the controller is correctly installed See Ground Loops on page 23 RTD Input Connections RTD input requires scaling resistors Watlow Anafaze rec ommends that you use a 100 Q three wire platinum RTD to prevent reading errors due to cable resistance If you use a two wire RTD jumper the negative input to common If you must use a four wire RTD leave the fourth wire uncon nected CH IN 100 2 RTD CH IN e Com e Figure 2 16 RTD Connections Doc 0600 2900 2000 Watlow Anafaze 29 Chapter 2 Installation CPC400 Series User s Guide Reference Voltage Terminals The 5V Ref and Ref Com terminals are provided to power external bridge circuits for special sensors Do not connect any other type of device to these terminals Voltage Input Connections Voltage input requires scaling r
218. put Cool Output 5V ac Figure 2 22 Sample Heat Cool and Alarm Out put Connections Solid State Solid State Solid State TB50 or TB18 Relay Relay Relay F Cool Output n Heat Output Common H PS Figure 2 23 Output Connections Using Exter nal Power Supply The CPU watchdog timer constantly monitors the micro processor It is a sink output located on TB50 terminal 6 or TB18 terminal 3 The output can be connected to an exter nal circuit or device to monitor whether the controller is powered and operational Do not exceed the 5V dc 10 mAdc rating for the watchdog output The output is on low when the microprocessor is operating when it stops operating the output goes off high Figure 2 24 and Figure 2 25 show the recommended circuit for the watchdog timer output for the TB50 and the TB18 TB50 5V dc Terminal 1 Solid State Relay Watchdog Timer Terminal 6 Figure 2 24 TB50 Watchdog Timer Output TB18 5V dc Terminal 1 Solid State Relay Watchdog Timer 7 Terminal 3 Figure 2 25 TB18 Watchdog Timer Output Watlow Anafaze 35 Chapter 2 Installation Digital Inputs External Switching Device 36 CPC400 Series User s Guide All digital inputs are transistor transistor logic TTL level inputs referenced to controller common and the inter
219. r a failed sensor an alarm message ap pears in the first line of the loop display as shown in Figure 3 5 Alarm Message LOOP PROCESS UNITS Hil Tet ary E Alarm Code Figure 3 5 Display for Failed Sensor Alarm ALARM SETPOINT STATUS OUT Watlow Anafaze 51 Chapter 3 Operation and Setup CPC400 Series User s Guide Table 3 2 describes the alarm codes and messages for pro cess alarms and failed sensor alarms Table 3 2 Alarm Codes and Messages for Process and Failed Sensor Alarms Alarm Message Description No message Alarm high See Alarm High and Alarm Low on page 66 No message Alarm low See Alarm High and Alarm Low on page 66 No message High deviation alarm See Deviation Alarms on page 66 No message Low deviation alarm See Deviation Alarms on page 66 pe pag Thermocouple open See Thermocouple Open Alarm on page 64 ney pag Thermocouple reversed See Thermocouple Reversed Alarm on page 64 en Thermocouple shorted See Thermocouple Short Alarm on page 64 RTD open See RTD Open or RTD Shorted Alarm on page 65 RTD shorted See RTD Open or RTD Shorted Alarm on page 65 No message Ambient Warning Controller s ambient temperature has exceeded operating limits by less than 5 C For details about the condition that causes each alarm see Setting Up Alarms on page 63 How
220. r an open air thermocouple in a dry air gas oven The output filter can also enhance PID control Some pro cesses are very sensitive and would otherwise require a large proportional band making normal control methods ineffective Using the output filter allows a smaller propor tional band to be used achieving better control Doc 0600 2900 2000 Watlow Anafaze 89 Chapter 4 Tuning and Control CPC400 Series User s Guide Also use the filter to reduce the process output swings and output noise when a large derivative is necessary or to make badly tuned PID loops and poorly designed processes behave properly Reverse and Direct Action With reverse action an increase in the process variable causes a decrease in the output Conversely with direct ac tion an increase in the process variable causes an increase in the output Heating applications normally use reverse action and cooling applications usually use direct action 90 Watlow Anafaze Doc 0600 2900 2000 Menu and Parameter Reference The CPC400 has operator and setup parameters that let you change the configuration of the controller This section contains the following information for each operator and setup parameter e Description e Values e Default value e Information for addressing controller parameters us ing serial communications and LogicPro programs For information about how to access the operator and setup parameters see the Operation and Setup
221. r system operation Watlow Anafaze Doc 0600 2900 2000 Installation This chapter describes how to install the CPC400 series controller and its peripherals Installation of the controller involves the following procedures e Determining the best location for the controller e Mounting the controller and TB50 e Power connection e nput wiring e Communications wiring EIA TIA 232 or EIA TIA 485 e Output wiring A WARNING Risk of electric shock Shut off power to your en tire process before you begin installation of the controller A WARNING The controller may fail in a 0 percent or 100 per cent power output state To prevent death per sonal injury equipment damage or property damage install external safety shutdown devices that operate independently from the process con trol equipment Doc 0600 2900 2000 Watlow Anafaze 11 Chapter 2 Installation Typical Installation CPC400 Series User s Guide Figure 2 1 shows typical installations of the controller with the TB50 and the TB18 terminal blocks The type of termi nal block you use greatly impacts the layout and wiring of your installation site See Figure 2 2 to Figure 2 10 to de termine potential space requirements We recommend that you read this entire chapter before be ginning the installation procedure This will help you to carefully plan and assess the installation CPC400 with TB50 se SCSI Cable R 8 Digital Inputs Pulse Input
222. rminal is connected to the CPC400 chassis and must be connected to earth ground 5 Connect 120 240V ac power to the power supply Connect the dc common of the power supply used for loads to the dc common of the supply powering the controller If the supplies are not ref erenced to one another the controller s outputs will not be able to switch the loads When making screw terminal connections tight en to 4 5 to 5 4 in Ib 0 5 to 0 6 Nm Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 2 Installation A CAUTION Without proper grounding the CPC400 may not operate properly or may be damaged CAUTION To prevent damage from incorrect connections do not turn on the ac power before testing the connections as explained in Testing the System on page 26 NOTE Do not connect the controller s dc common COM to earth ground 4 Doing so will defeat the noise protection circuitry making measurements less stable Power Supply V1 5V CG e Add jumper MO N 0 5V COM CPC400 R ED V2 A 5V m gt solid state relay solid state relay oO D COM 15V JOm solid state relay solid state relay e D V2 15V i e 7 Ground t 5 3 4 Serial DAC ACL AC Line ae e 50 M ACN AC Neutral e N white 1
223. s five set to 1 When the message is transmitted the parity bit is calculat ed and applied to the frame of each character The receiv ing device counts the quantity of bits set to 1 and sets an error if they are not the same as configured for that device All devices on the Modbus network must be configured to use the same parity check method Note that parity checking can detect an error only if an odd number of bits are picked up or dropped in a character frame during transmission For example if odd parity checking is used and two 1 bits are dropped from a charac ter containing three 1 bits the result is still an odd count If no parity checking is used then the parity bit is not transmitted and no parity check is made An additional stop bit is transmitted to fill out the character frame All messages include an error checking field that is based on a cyclical redundancy check CRC method The CRC field checks the contents of the entire message It is applied regardless of any parity check method used for the individ ual characters of the message The CRC field is two bytes containing a 16 bit binary val ue The CRC value is calculated by the transmitting device which appends the CRC to the message The receiving de vice recalculates a CRC during receipt of the message and compares the calculated value to the actual value it re ceived in the CRC field If the two values are not equal an error results The CRC is s
224. s sent Linearity The deviation in response from an expected or theoretical straight line value for instruments and transducers Also called linearity error 198 Watlow Anafaze CPC400 Series User s Guide Load The electrical demand of a process expressed in power Watts current Amps or resistance Ohms The item or substance that is to be heated or cooled Low Deviation Alarm Warns that the process has dropped more than a certain amount below set point It can be used as either an alarm or control function Low Alarm A signal that is associated with a set minimum value that can be used as either an alarm or boost control function Manual Mode A selectable mode that has no automatic control aspects The operator sets output levels Manual Reset A parameter that allows the user to eliminate off set or droop between set point and actual process temperature See also Integral Milliampere mA One thousandth of an ampere N Noise Unwanted electrical signals that usually produce signal interference in sensors and sensor circuits See also Electromagnetic Interference Noise Suppression The use of components to reduce electrical inter ference that is caused by making or breaking electrical contact or by inductors O Offset The difference between the set point and the actual value of the process variable Offset is the error in the process variable that is typical of pro portional only control
225. s the resistance temperature characteristic to measure temperature There are two basic types of RTDs the wire RTD which is usually made of platinum and the thermistor which is made of a semiconductor material The wire RTD is a positive temperature coefficient sensor only while the thermistor can have either a negative or positive temperature coefficient Reverse Action An output control action in which an increase in the process variable causes a decrease in the out put Heating applications usually use reverse action RTD See Resistance Temperature Detector Watlow Anafaze 199 Glossary S Serial Communications A method of transmitting information between devices by sending all bits serially over a single communication channel Set Point SP The desired value of the process variable For example the temperature at which a system is to be maintained Shield A metallic foil or braided wire layer surrounding conductors that is designed to prevent electro static or electromagnetic interference from exter nal sources Signal Any electrical transmittance that conveys infor mation Solid State Relay SSR See Relay Solid State Span The difference between the lower and upper lim its of a range expressed in the same units as the range Stability The ability of a device to maintain a constant out put with the application of a constant input T Thermistor A temperature sensing device made of sem
226. s to provide analog signals See Dual DAC Specifications on page 178 and Serial DAC Spec ifications on page 180 Digital Outputs Table 7 18 Digital Outputs Control Alarm Number 35 Operation Open collector output ON state sinks to logic common 34 Outputs selectable as closed loop control alarms or pro Function grammable logic 1 global alarm output Number of Control Outputs per PID Loop 2 maximum Control Output Types Time proportioning distributed zero crossing Serial DAC or on off All independently selectable for each output Heat and cool control outputs can be individually disabled for use as alarm outputs Time Proportioning Cycle Time 1 to 255 seconds programmable for each output Control Action Reverse heat or direct cool independently selectable for each output Off State Leakage Current lt 0 01 mA to dc common Maximum Current 60 mA for each output 5V power supply from the processor module can supply up to 350 mA total to all outputs Maximum Voltage Switched 24V dc Table 7 19 CPU Watchdog Output Number 1 Operation Open collector output ON state sinks to logic common Function Monitors the processor module microprocessor Maximum Current 10 mA 5V power supply in the processor module can supply up to 350 mA total to all outputs Maximum Voltage Switched 5V de Voltage Table 7 20 5V dc Output
227. smallest possible range is 0 9999 to 3 0000 the largest possible range is 9999 to 30000 3 Enter the appropriate scaling values for your process See Setting Up a Process or Pulse Input on page 58 Configuring Serial DAC Outputs On the Serial DAC the voltage and current output is jump er selectable Refer to Figure 6 7 Configure the jumpers as indicated on the Serial DAC label Figure 6 7 Serial DAC Voltage and Current Jumper Positions 162 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 6 Troubleshooting and Reconfiguring Configuring Dual DAC Outputs Dual DAC modules ship with both of the outputs config ured for the signal type and span that were ordered The module contains two independent circuits DAC 1 and DAC 2 These circuits can be configured for different out put types Remove the board from the housing and set the jumpers The odd numbered jumpers determine the signal from DAC 1 the even numbered jumpers determine the output from DAC 2 Figure 6 8 Dual DAC Table 6 8 Dual DAC Jumper Settings Jumper Settings Output Type 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0 to 5V de B A A O B A O 0 to 10V dc B A A O B O O 4 to 20 mA O A B A A O A A Load jumper in the A position or load jumper if header has only two pins B Load jumper in the B position O Open Do not load jumper Doc 0600 2900 2000 Wa
228. sor Situation Suppose the controller has a 0 to 20 mA process input that is connected to a pressure sensor The pressure sensor has a range of 4 to 20 mA representing 0 0 to 50 0 pounds per square inch PSI Setup Set the scaling parameters in the Input menu as follows e For the Input type parameter choose process e For the Disp format parameter choose 999 9 to 3000 0 because the sensor measures PSI in tenths e For the Input signal low and Input signal high param eters use the minimum and maximum range of the sensor In this case the sensor range is 4 to 20 mA The range must be expressed in percent of full scale To determine the percentages divide the minimum and maximum sensor range 4 mA and 20 mA by the maximum signal that the controller can accept 20 mA e Input signal low 4 mA 20 mA 0 2 20 Doc 0600 2900 2000 Watlow Anafaze 59 Chapter 3 Operation and Setup CPC400 Series User s Guide e Input signal high 20 mA 20 mA 1 0 100 e For the Input range low and Input range high param eters enter the process values that correspond to the low and high signals In this case a 20 percent 4 mA signal represents 0 0 PSI A 100 percent 20 mA sig nal represents 50 0 PSI Table 3 4 Input Readings Process TIDA variable pad Peen r cae Displayed 50 0 PSI 20 mA 100 0 PSI 4 mA 100 x 4 mA 20 mA 20 Table 3 5 Scaling Values Parameter Value or ee ee ee pem
229. sted resistor pack RP lo cation Note the resistor pack locations have three through holes Install the resistor as shown in the illustration be low Table 6 3 Resistor Values for Current Inputs Input Range Resistor Value RD O to 10 mA 6 0 Q 0 to 20 mA 3 0 Q Resistor tolerance 0 1 RP tw RD Table 6 4 Resistor Locations for Current Inputs Resistor Resistor Loop Location RD Loop Location RD 1 RP1 5 RP5 2 RP2 6 RP6 3 RP3 7 RP7 4 RP4 8 RP8 Watlow Anafaze 159 Chapter 6 Troubleshooting and Reconfiguring Voltage Inputs CPC400 Series User s Guide For each voltage input you must install two resistors The resistances must be correct for the expected input range Note the resistor pack RP locations have three through holes Install the RD resistor as indicated in the illustra tion below Table 6 5 Resistor Values for Voltage Inputs Resistor Values Input Range 0 to 100mV dc 499 Q 750 Q 0 to 500mV dc 5 49 kQ 750 Q 0 to 1V dc 6 91 kQ 442 0 Q 0 to 5V dc 39 2 KQ 475 Q 0 to 10V dc 49 9 KQ 301 0 Q 0 to 12V dc 84 5 KQ 422 0 Q Resistor tolerance 0 1 RP eo RD Table 6 6 Resistor Locations for Voltage Inputs Resistor Locations Loop RC RD 1 R58 RP1 2 R56 RP2 3 R54 RP3 4 R52 RP4 5 R50 RP5 6 R48 R
230. t Cool SDAC Low Signal LOOP PROI UNITS ALARM SETPOINT STATUS Doc 0600 2900 2000 For a Serial DAC output enter the low output signal level for the Serial DAC The Serial DAC converts 0 percent out put from the controller to this value Enter high and low values that match the input range of the output device For instance if the output device has a 0 to 10V dc input range then set SDAC low signal to 00V dc and set SDAC hi signal to 10 00V do Values 00 to 9 90V dc 0 to 990 or 0 00 to 19 90 mA 0 to 1990 This value must be less than the value of SDAC hi signal Values in parentheses are for serial communica tions and LogicPro Default 00V dc 0 or 4 00 mA 400 Modbus Address Loops 1 to 9 44341 to 44349 heat or 44358 to 44366 cool Parameter Number 80 heat or 81 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 80 1 to 80 9 heat or 81 1 to 81 9 cool Watlow Anafaze 117 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Heat Cool SDAC High Signal oor PROGESS UNITS For a Serial DAC output enter the high output signal level i Hi hi for the Serial DAC The Serial DAC converts 100 percent output from the controller to the value set here ALARM SETPOINT STATUS OUT Enter the high and low values that match the input range of the output device For instance if the output device has a4 to 20 mA input range then set
231. t of the integral Example Integral 60 derivative 9 Set the output filter to 2 Table 4 4 shows general PID constants by application Table 4 4 General PID Constants santi Proportional nati Output Cycle Application Band Integral Derivative Filter Type Time Action Electrical heat with solid state 50 60 15 4 DZC Reverse relays Electrical heat with electrome 50 60 15 6 TP 20 Reverse chanical relays Cool with sole 5 noid valve 70 500 90 4 TP 10 Direct Cool with fans 10 Off 10 4 TP 10 Direct Electric heat with open heat 30 20 Off 4 DZC Reverse coils Gas heat with 60 120 25 motorized valves 8 Analog Reverse Set Point gt 1200 100 240 40 Doc 0600 2900 2000 Watlow Anafaze 87 Chapter 4 Tuning and Control Control Outputs Output Control Signals On Off Time Proportioning TP 88 CPC400 Series User s Guide The controller provides open collector outputs for control These outputs normally control the process using solid state relays Open collector outputs can be configured to drive a serial digital to analog converter Serial DAC which in turn can provide 0 to 5V dc 0 to 10V dc or 4 to 20 mA con trol signals to operate field output devices The following sections explain the different control output signals available When on off control is used the output is on or off depend ing on the difference between the set po
232. t signal will be retransmitted 2 Choose an unused control output to retransmit the in put signal This output may be on the primary loop or on a different loop 3 On the secondary loop the loop whose output will re transmit the signal e Set up the parameters in the PV retrans menu See Process Variable Retransmit Menu on page 125 e Enable the loop s output and configure it to meet the requirements of the application 4 Ifthe signal is being retransmitted to another controller configure the input of that controller to accept the linear output signal produced by the retransmit output Process Variable Retransmit Example Data Logging 68 The CPC400 controls the temperature of a furnace The thermocouple in one of the zones is connected to the con troller and is used for closed loop PID control An analog re corder data logging system is also in place and a recording of the process temperature is required The recorder re quires a linear 4 to 20 mA input signal which represents a process variable range of 0 to 1000 F Loop 1 Input Process Variable Loop 1 PID Output Loop 2 PID Output Furnace CPC400 Heater Serial DAC Power Controller To Data Logger 4 Figure 3 8 Application Using Process Variable Retransmit Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Chapter 3 Operation and Setup Table 3 9 shows the par
233. t the pulse input to a signal source that may exceed 10kHz CPC400 and TB50 or TB18 5V dc 10 kog fi Pulse Input Encoder Com Figure 2 19 Encoder with 5V dc TTL Signal CPC400 and TB50 or TB18 5V dc 10 kog R1 l Pulse Input ANN Encoder R2 Com Figure 2 20 Encoder Input with Voltage Divider For encoders with signals greater than 5V dc use a volt age divider to drop the voltage to 5 volts at the input Use appropriate values for R and R depending on the encoder excitation voltage Do not exceed the specific current load on the encoder Watlow Anafaze 31 Chapter 2 Installation CPC400 Series User s Guide Wiring Control and Digital I O NOTE This section describes how to wire and configure the control outputs for the CPC400 series controller The CPC400 pro vides dual control outputs for each loop These outputs can be enabled or disabled and are connected through a TB50 or TB18 Control outputs are connected to controller com mon when the control output is on If you connect external devices that may have a low side at a voltage other than controller ground you may create ground loops To prevent ground loops use isolated solid state relays and isolate the control device inputs Output Wiring Recommendations Cable Tie Wraps Digital Outputs 32 When wiring output devices use multicolored stranded shielded cable for anal
234. tal output terminal See Table 2 5 on page 37 for TB18 connections or Table 2 6 on page 38 for TB50 connections 2 Connect the voltmeter s positive lead to terminal 1 on the TB50 or TB18 3 Connect the voltmeter s common lead to the digital output terminal 4 Use the digital output test in the I O tests menu to turn the digital output on and off see Test Digital Output 1 to 35 on page 132 When the output is on the output volt age should be less than 1 V When the output is off the output voltage should be between 4 75 and 5 25 V By default heat outputs are enabled Only disabled outputs may be turned on using the manual I O test To test heat outputs set the corresponding loop to manual mode 100 percent output See Changing the Control Mode and Output Power on page 55 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Digital Input Test Sensor Wiring Doc 0600 2900 2000 A CAUTION Chapter 2 Installation Use the following procedure to test digital inputs before connecting to field devices 1 Disconnect any system wiring from the input to be tested 2 Go to the Digital inputs test in the I O tests menu This test shows whether the digital inputs are off open or on closed 3 Attach a wire to the terminal of the digital input you want to test See Table 2 5 on page 37 for TB 18 con nections or Table 2 6 on page 38 for TB50 connections a When the wire is connected only t
235. tarted by first preloading a 16 bit register to all 1s Then a process begins of applying successive 8 bit bytes of the message to the current contents of the register Only the eight bits of data in each character are used for generating the CRC Start and stop bits and the parity bit if one is used do not apply to the CRC During generation of the CRC each 8 bit character is ex clusive ORed with the register contents Then the result is shifted in the direction of the least significant bit LSB with a 0 filled into the most significant bit MSB position The LSB is extracted and examined If the LSB was a 1 the register is then exclusive ORed with the preset fixed value A001 If the LSB was a 0 no exclusive OR takes place This process is repeated until eight shifts have been per formed After the last shift the next 8 bit byte is exclusive Watlow Anafaze 189 Appendix A Modbus Protocol CPC400 Series User s Guide ORed with the register s current value and the process re peats for eight more shifts as described above The final contents of the register after all the bytes of the message have been applied is the CRC value Function Codes The listing below shows the function codes supported by the CPC400 controllers Codes are listed in decimal Table A 1 Function Codes bec Name 01 Read Coil Status 02 Read Input Status 03 Read Holding Registers 04 Read Input Registers 05 Force Single
236. temperature is within range and the alarm persists reseat the board assembly a Switch off power to the controller b Remove the board assembly from the CPC400 housing c Reseat the board assembly and reassemble the controller d Switch on power to the controller If the alarm persists make a record of all controller settings then clear the RAM See Clearing the RAM on page 153 If the alarm is not cleared contact your supplier for further troubleshooting guidelines See Returning a Unit on page 140 NOTE If the controller has failed it may have been dam aged by excessive voltage Before replacing the controller troubleshoot for high ac voltage on sensors or outputs See Checking Analog Inputs on page 148 Keys Do Not Work If the CPC400 seems to function but one or more keys do not work check the following Doc 0600 2900 2000 If the key does not work but other keys work then the keypad is probably locked Unlock the keypad ac cording to the instructions in Keypad Lock on page 101 Check whether there is an unacknowledged alarm The keys will not work for anything else until all alarms are acknowledged To acknowledge an alarm press 9 Watlow Anafaze 147 Chapter 6 Troubleshooting and Reconfiguring Checking Analog Inputs 148 A WARNING CPC400 Series User s Guide Follow these steps to troubleshoot problems with the ana log inputs to the CPC400 controller Shorts between hea
237. ten Only Mode 04 Forces the addressed slave to listen only mode for Modbus communications This isolates it from the other devices on the network allowing them to con tinue communicating without interruption from the addressed slave No response is returned When the slave enters listen only mode all active communi 00 04 00 00 No cation controls are turned off The ready watchdog timer is Response allowed to expire locking the controls off While in this mode any Modbus messages addressed to the slave or broadcast are monitored but the slave does not take any action or send any responses The only function that will be processed after the mode is entered will be the Restart Communications Option function function code 08 subfunction 01 Echo Query Clear Counters 10 Clears all communication event 00 0A 00 00 Data counters Counters are also cleared upon powerup Return Bus Message Count 11 Returns the quantity of mes Total Mes sages that the slave has detected on the communications 00 0B 00 00 i sage Count system since its last restart clear counters operation or pow erup CRC Error Return Bus Communication Error Count 12 Returns the 00 0C 00 00 Count quantity of CRC errors encountered by the slave since its last restart clear counters operation or powerup Exception Return Bus Exception Error Count 13 Returns the quantity 00 0D 00 00 E of Modbus exception responses returned by the slave since rror Count
238. ter Default 25 0 for the pulse input Modbus Address Loops 1 to 9 44784 to 44792 Parameter Number 107 LogicPro Driver Database LogicPro Address Loops 1 to 9 107 1 to 107 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Enter the factor by which to multiply the process variable of the master loop to calculate the set point of the ratio loop Values 1 to 999 9 1 to 9999 Values in parentheses are for serial communications and LogicPro values are in tenths Default 1 0 10 for a thermocouple RTD or process input 0 0 for a pulse input Modbus Address Loops 1 to 9 44801 to 44809 Parameter Number 108 LogicPro Driver Database LogicPro Address Loops 1 to 9 108 1 to 108 9 Watlow Anafaze 129 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Ratio Set Point Differential Loop process unts Enter the value to add to the ratio calculation before using Pad Rati E it as the set point Values 9999 to 9999 Decimal placement depends upon ALARM SEPORT STATUS o the Input type and Disp format values in the Input menu Default 0 Modbus Address Loops 1 to 9 44818 to 44826 Parameter Number 109 LogicPro Driver Database LogicPro Address Loops 1 to 9 109 1 to 109 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Soft Integers Menu Loop PROGESS UNITS The Soft
239. ters and sensors or wiring er rors can cause potentially lethal voltages to be present in the CPC400 and associated wiring and devices Only qualified personnel taking appro priate precautions should attempt to troubleshoot or service equipment 1 Ifthe process variable displayed in interface software does not agree with the process variable on the control ler display verify that the controller is communicating 2 Ifthe process variable indicated on the controller dis play is incorrect a Verify that you have selected the correct input type for the affected loops b Verify that sensors are properly connected 3 Ifthe sensors are correctly connected with power on to the heaters check for high common mode voltage a Set a voltmeter to measure volts ac b Connect the negative lead to a good earth ground c Check each sensor input for ac voltage by connect ing the one lead from the voltmeter to the sensor s positive input connection and the other lead from the voltmeter to the sensor s negative input con nection A voltage greater than 530V ac on one or more sen sor connections indicates a heater leakage or a wiring problem Correct this problem 4 Check for voltage differences between sensors A volt age difference between any two sensors in excess of 280V ac indicates a wiring problem or short a Connect the negative lead to the first sensor con nection b With the positive lead measure the s
240. the Example 78 Table 3 16 Number of Decimal Places for Numeric Values via Modbus or Logic 80 4 Tuning and Control 81 Table 4 1 Proportional Band Settings 85 Table 4 2 Integral Term and Reset Settings 86 Table 4 3 Derivative Term Versus Rate 86 Table 4 4 General PID Constants 87 Doc 0600 2900 2000 Watlow Anafaze ix List of Tables CPC400 Series User s Guide 5 Menu and Parameter Reference 91 Table 5 1 Control Mode Menu Options 93 Table 5 2 CPC400 Setup Menus 94 Table 5 3 Values for BCD Job Load 97 Table 5 4 Digital Input States Required to Load Each Job 98 Table 5 5 Power Up Loop Modes 100 Table 5 6 Digital Output Alarm Polarity 103 Table 5 7 Input Types and Ranges 104 Table 5 8 Calibration Offset Ranges 106 Table 5 9 Display Formats 107 Table 5 10 Characters for the Loop Name and Input Units Parameters 110 Table 5 11 PV Source Options 110 Table 5 12 Proportional Band Values 111 Table 5 13 Values for the Control Hysteresis and Deviation Alarm Parameters 113 Table 5 14 Control Types 115 Table 5 15 Heat and Cool Output Types 116 Table 5 16 Alarm Functions 122 Table 5 17 Values for Alarm Hysteresis 125 Table 5 18 Bit Positions for Alarm Enable and Alarm Function 133 Table 5 19 Bit Positions for Alarm Status and Alarm Acknowledge 134 Table 5 20 System Status Bits 137 6 Troubleshooting and Reconfiguring 139 Table 6 1 Operator Response to Process Alarms 142 Table 6 2
241. third bit Throughout this manual we refer to the least sig nificant bit as the first bit Watlow Anafaze 79 Chapter 3 Operation and Setup CPC400 Series User s Guide Decimal Placement for Numeric Values Numeric values that are in the loop s engineering units are stored as integers The number of decimal places that are assumed when a parameter value is stored in the controller depends upon the Input type and Disp format parameter values for the loop See Table 3 16 Table 3 16 Number of Decimal Places for Nu meric Values via Modbus or Logic Input Type Display Format reece eee 999 to 3000 1 999 to 3000 1 9999 to 30000 0 Process or pulse or 999 9 to 3000 0 1 soft integer used as an Analog Input 99 99 to 300 00 2 9 999 to 30 000 3 0 9999 to 3 0000 4 To determine the integer value to set in the controller move the decimal to the right the number of places speci fied For example e Ifa loop has a process input with a display format of 99 99 to 300 00 values are stored with two decimal places If you read a value in the set point register of 2500 you should interpret that value as 25 00 e Ifa loop has a thermocouple input and you want to set the Alarm High SP parameter to 355 through Modbus or logic you should set a value of 3550 Decimal Placement for Percentage Values Percentage values are stored internally in tenths of a per cent such that 1000 corres
242. ting holes for 6 3 5 mm screws or bolts 5 Mount the TB50 with four screws or bolts There are four smaller holes on the terminal board Use these holes to secure wiring to the terminal block with tie wraps h 4 Holes for 6 3 5 mm Bolts or Screws 3 4 in 86 mm SCSI Connector 0 2 in 0 2 in 3 610 my 5 mm 91 mm Figure 2 8 Mounting a TB50 with Standoffs Doc 0600 2900 2000 Watlow Anafaze 17 Chapter 2 Installation CPC400 Series User s Guide Mounting the Power Supply Mounting Environment 2 Holes for 10 4 5 mm Bolts or Screws 1 4 inch 36 mm 7 5 inches If you use your own power supply for the CPC400 refer to the power supply manufacturer s instructions for mounting information Choose a Class 2 power supply that supplies an isolated regulated 12 to 24V dc at 1 A Leave enough clearance around the power supply so that it can be removed 0 3 Nes 8 mm 191 mm n i aa mm i 8 1 inches 206 mm Figure 2 9 CPC400 Power Supply Mounting Bracket Mounting Steps A CAUTION When attaching the bracket to the power supply use screws that are no longer than 1 4 inch 6 mm long Longer screws may extend too far into the power supply and short to components dam aging the power supply 1 Attach the bracket to the power supply using the two center holes in the bracket 2 Choose a location with enough clearance to remove the power supply an
243. tion about each output type see the Tun ing and Control chapter If an output is used for process variable retransmit the disabled option is not available To disable the output first disable process variable retransmit for the output See Heat Cool Output Retransmit on page 126 Values See Table 5 15 Default TP 2 for heat disabled 0 for cool Modbus Address Loops 1 to 9 40137 to 40145 heat or 40154 to 40162 cool Parameter Number 8 heat or 9 cool LogicPro Driver Database LogicPro Address Loops 1 to 9 8 1 to 8 9 heat or 9 1 to 9 9 cool Table 5 15 Heat and Cool Output Types Modbus or Output Type apay Eo Description alue The output is switched on and off once during a Time T5 2 user selected cycle time Within each cycle the Proportioning i duration of on versus off time is proportional to the percent output power On Off on off 1 The output is either full on or full off EREE E The output is not used for control and is available None GlsSa0nleq 0 for another use such as an alarm output Three Phase Same as DZC but for three phase heaters wired in Distributed 3P DZC 5 delta configuration For grounded Y configuration Zero Crossing use DZC instead Use this option if a Serial DAC is connected to the Serial DAC ange 4 output If you set the output type to SDAC the con troller assigns digital output 34 as a clock line for the Serial DAC The output on off state
244. tions that communicate with the CPC400 Using that driver makes it unnecessary for the programmer to understand and implement the Modbus protocol Controllers communicate using a master slave model in which only one device the master can initiate transac tions called queries The other devices slaves respond by supplying the requested data to the master or by taking the action requested in the query Typical master devices include host PCs and operator panels The CPC400 is a slave device The master can address individual slaves or initiate a broadcast message to all slaves Slaves return a message called a response to queries that are addressed to them individually Responses are not returned to broadcast que ries from the master The Modbus protocol establishes the format for the mas ter s query by placing into it the device or broadcast ad dress a function code defining the requested action any data to be sent and an error checking field The slave s re sponse message is also constructed using Modbus protocol It contains fields confirming the action taken any data to be returned and an error checking field If an error oc Watlow Anafaze 183 Appendix A Modbus Protocol CPC400 Series User s Guide curred in receipt of the message or if the slave is unable to perform the requested action the slave will construct an error message and send it as its response Query Message from Master
245. tlow Anafaze 163 Chapter 6 Troubleshooting and Reconfiguring 164 10 11 12 13 CPC400 Series User s Guide Power down the system if the Dual DAC is already in stalled and wired Ensure the DAC 1 and DAC 2 terminal blocks or asso ciated wires are labeled such that you will know which terminal block connects to which side of the board if the module is already installed and wired Unplug the two terminal blocks Depending on the installation you may need to un mount the Dual DAC module before proceeding Re move the four screws from the end plate on the opposite side of the module from the terminal blocks If necessary remove the two mounting screws holding the loosened end plate in place Slide the board out of the housing Set the jumpers for the two outputs as desired See Table 6 8 Replace the board such that the connectors extend through the opposite end plate The board fits in the third slot from the bottom Reconnect the two terminal blocks to the DAC 1 and DAC 2 connectors Replace the end plate end plate screws and if neces sary mounting screws Check the wire connections to the DAC 1 and DAC 2 terminal blocks If necessary change the wiring connections to the cor rect configuration for the new output type See Wiring the Dual DAC on page 39 Restore system power Watlow Anafaze Doc 0600 2900 2000 Specifications This chapter contains specifications for the CPC400
246. tly Selectable Control and Output Modes Set each control output to on off time propor tioning Serial DAC digital to analog converter or distributed zero crossing mode Set up to two outputs per loop for on off P PI or PID control with reverse or direct action Boost Output Function Set digital outputs to func tion as boost on off control in association with any alarm Flexible Alarms Independently set high and low alarms and high and low deviation alarms for each loop Alarms can activate a digital output by them selves or they can be grouped with other alarms to ac tivate an output Global Alarm Output Any alarm event activates the global alarm output CPU Watchdog The CPU watchdog timer output no tifies you of system failure Watlow Anafaze 3 Chapter 1 System Overview CPC400 Parts List CPC400 Series User s Guide Keypad or Computer Operation Set up and run the controller from the keypad or from a local or re mote computer Use WATVIEW HMI software to set up the controller manage jobs recipes log data or monitor system performance Modbus RTU Protocol EIA TIA 232 and 485 Communications Connect operator interface termi nals and third party software packages using the widely supported Modbus RTU protocol Multiple Job Storage Store up to eight jobs in the controller s battery backed memory Load a job through the keypad digital inputs or software Each job is a set of operating conditions i
247. to power supply Figure 2 11 CPC400 Series Controller with TB18 ooo0oo00000 WATLOW_ ANAFAZE TB BOARD COMPONENT SIDE S N D C Do 2 2 2 2 2 O O 2 2 2 2 D 2 CO00D0D000000000000 TB1 to signal inputs SCSI 2 A TB50 Watlow Anafaze to TB50 Figure 2 12 CPC400 Series Controller with 23 Chapter 2 Installation Wiring the Power Supply 24 A CPC400 Series User s Guide WARNING Use a power supply with a Class 2 rating only UL NOTE NOTE approval requires a Class 2 power supply Connect power to the controller before any other connec tions This allows you to ensure that the controller is work ing before any time is taken installing inputs and outputs Table 2 2 Power Connections Function Power Supply CPC400 TB2 DC Power Gooien 12 to 24V dc DC Common 12 to 24V dc Common Earth Ground Ground oh 1 Connect the dc common terminal on the power supply to the dc common terminal on CPC400 TB2 2 Connect the positive terminal on the power supply to the dc positive terminal on CPC400 TB2 3 If using an isolated dc output or another power supply to power the loads connect the dc common of the sup ply powering the loads to the dc common of the supply powering the controller 4 Use the ground connector on TB2 for chassis ground This te
248. to the controller the TX LED on the tester should blink When the computer receives data from the controller the RX LED should blink e You can also connect an oscilloscope to the transmit or receive line to see whether data is being sent or re ceived If the serial port does not appear to be working the software setup may need to be modified or the hardware may need to be repaired or replaced Most communications problems are due to incorrect wiring or incorrectly set communications parameters Therefore when there is a problem check the wiring and communica tions settings first Verify the following e Communications Port Software must be config ured to use the communications port to which the con troller is connected e Software Protocol The CPC400 supports the Mod bus RTU protocol Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Software Problems Clearing the RAM Doc 0600 2900 2000 Chapter 6 Troubleshooting and Reconfiguring e Controller Address Configure software to look for the controller at the correct address In a multiple con troller installation each controller must have a unique address e Baud Rate Software and controller must be set the same e Parity In the Modbus RTU protocol the parity may be set to none even or odd For error free communica tions to occur the CPC400 and any other device must have the same parity setting e Hardware Protocol PC and controller m
249. tput is 100 percent Values For a thermocouple or RTD input any value with in the input range see Table 5 7 on page 104 For a pro cess or pulse input any value between the Input range low and Input range high parameters This value must be less than the Cascade hi SP parameter Default 25 for a thermocouple RTD or process input 0 for the pulse input Modbus Address Loops 1 to 9 44682 to 44690 Parameter Number 101 LogicPro Driver Database LogicPro Address Loops 1 to 9 101 1 to 101 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Watlow Anafaze 127 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Cascade High Set Point Looe PROGESS UNITS Enter the set point to use for the current loop when the out 1i C hi i put of primary loop is at its maximum value The set point will never exceed this value AEAN SETPOINT s O e Ifthe primary loop has only the heat output enabled or has the heat and cool outputs enabled this value is the set point when the output of the primary loop is 100 percent e If the primary loop has only the cool output enabled then this value is the set point when the output of the primary loop is 0 percent Values For a thermocouple or RTD input any value with in the input range see Table 5 7 on page 104 For a pro cess or pulse input any value between the Input range low and Input range high parameters
250. trol function HMI Human machine interface Hysteresis Control Hysteresis The range through which a variation of the input produces no noticeable change in the output In the hyster esis specific conditions can be placed on con trol output actions Operators select the hysteresis It is usually above the heating pro Watlow Anafaze 197 Glossary portional band and below the cooling propor tional band Process Hysteresis In heat cool applica tions the difference between heat and cool Also known as process deadband Input Analog Input An input that accepts pro cess variable information Digital Input An input that accepts on and off signals Input Scaling The converting of input signals to the engineer ing units of the process variable Input Type The signal type that is connected to an input such as thermocouple RTD or process Integral Control D Control action that automatically eliminates off set or droop between set point and actual pro cess temperature J Job A set of operating conditions for a process that can be stored and recalled in a controller s mem ory Also called a recipe Junction The point where two dissimilar metal conductors join to form a thermocouple K Keypad Lock A feature that prevents operation of the keypad by unauthorized people L Lag The delay between the output of a signal and the response of the instrument to which the signal i
251. ts 171 174 controller outputs 174 176 CPU watchdog timer 175 Dual DAC 178 180 power supply 176 178 Serial DAC 180 TB50 168 171 spread see hysteresis system alarms behavior of 143 messages 52 53 troubleshooting 145 System Status parameter 136 T T C open alarm message 52 T C reversed alarm message 52 T C shorted alarm message 52 TB18 alarm outputs 35 connections 37 CPU watchdog timer output 35 digital output wiring 33 testing after installation 26 to power encoders 31 troubleshooting 150 TB50 alarm outputs 35 connections 26 38 CPU watchdog timer output 35 digital inputs 36 digital output wiring 33 dimensions 168 171 Watlow Anafaze 207 Index for powering Serial DAC 40 mounting on DIN rail 16 mounting with standoffs 17 specifications 168 171 technical description 8 terminal specifications 169 testing after installation 26 to power encoders 31 troubleshooting 150 weight 168 TC short alarm parameter 64 101 temperature incorrect on display 148 148 operating 165 176 178 180 storage 165 176 178 180 temperature scale 105 terminal specifications TB50 169 Test D O parameter 132 testing TB18 after installation 26 TB50 after installation 26 see also troubleshooting thermistor inputs scaling resistors for 161 thermocouples accuracy 173 alarm messages 52 calibration offset 105 ground loops 29 manual mode if break occurs 120 polarity checking 106 range 173 resolution 173 reversed detection 106 short d
252. ust use the same protocol or a converter must be used The con troller is typically configured for EIA TIA 232 when it is shipped See Changing the Hardware Communica tions Protocol on page 157 to change between EIA TIA 232 and EIA TIA 485 To communicate with more than one controller or when more than 50 feet of cable is required use EIA TIA 485 Even for a single con troller you may use EIA TIA 485 and an optically iso lating converter to eliminate ground loops e Converter Make sure that the 232 to 485 converter is powered configured and wired correctly e Cables Check continuity by placing a resistor across each pair of wires and measuring the resistance with an ohmmeter at the other end If the controller and serial communications connections seem to be working correctly but you are still not getting the result you expect consult the documentation for the software program you are using Anafaze WatView and LogicPro software come with con text sensitive help explaining operation of the software You can press the F1 key to get information related to the part of the program you are using Clearing the random access memory RAM returns all con troller settings to their defaults All stored jobs are also cleared from controller memory To clear the RAM 1 Make a record of all controller settings 2 Switch off power to the controller 3 Press and hold Q 4 Switch on power to the controller while still holding
253. utput type and scaling if required 62 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide How to Autotune a Loop A WARNING Setting Up Alarms Failed Sensor Alarms Doc 0600 2900 2000 Chapter 3 Operation and Setup e Heat power limit if the heat output is used and 100 power is not safe e Cool power limit if the cool output is used and 100 power is not safe 1 Go to the loop display see Loop Display on page 50 and press to choose the loop to tune 2 Enter the desired set point or one that is in the middle of the expected range of set points that you want to tune for See page 54 3 Set the control mode to tune See page 55 After the control mode on the loop display has switched to adpt and stopped flashing the PID parameters should be close enough to provide good control As long as the loop is in the adaptive control mode TRU TUNE continuously tunes to provide the best possible PID control for the pro cess During autotuning the controller sets the output to 100 percent and attempts to drive the process variable toward set point Enter a set point and heat and cool power limits that are within the safe operating limits of your system The CPC400 has three main types of alarms e Failed sensor alarms e Process alarms e System alarms Failed sensor alarms alert you if one of the following condi tions occurs e Thermocouple open e Thermocouple shorted must be
254. xB TXA IN IN TB1L1 13 57779 111113115117 119121123125 opcagg CHICH c CH CH c JCH CH Ret ICH CH Gnd RX 1 2 o0 3 4 0 5 6 7181 7 1 E TB2 IN IN m JIN IN m IN IN COMHIN IN RXB RXA A L214 16 8 10 112 14 16 18 20 22 24 26 MADE C CHICH CHICH c CH CH CHICH Gnd TX IN THE o ladia ola tal ols le 7 ia USA m IN IN m JIN JIN m IN lIN Ref IN IN TXB TXA Figure 2 14 CPC400 Connector Locations Input Wiring Recommendations Use multicolored stranded shielded cable for analog inputs Watlow Anafaze recommends that you use 20 AWG wire 0 5 mm2 If the sensor manufacturer requires it you can also use 24 or 22 AWG wiring 0 2 mm2 Most inputs use a shielded twisted pair some require a three wire input The controller accepts the following inputs without any special scaling resistors e J K T S R B and E thermocouples e Process inputs with ranges between 10 and 60 mV To avoid thermocouple open alarms on unused inputs ei ther set the Input type parameter to skip or jumper the in put Thermocouple Connections Connect the positive lead of the thermocouple to the IN terminal for one of the loops and connect the negative lead to the corresponding IN terminal 28 Watlow Anafaze Doc 0600 2900 2000 CPC400 Series User s Guide Cha
255. y of features for the CPC400 series controllers Chapter 2 Installation provides detailed instruc tions on installing the CPC400 series controller and its peripherals Chapter 3 Operation and Setup provides instruc tions about operating and setting up the CPC400 Chapter 4 Tuning and Control describes available control algorithms and suggestions for applications Chapter 5 Menu and Parameter Reference pro vides detailed descriptions of all menus and parame ters for controller setup and for accessing parameter and I O values with a LogicPro program or via the se rial communications interface Chapter 6 Troubleshooting and Reconfiguring includes troubleshooting upgrading and reconfigur ing procedures for technical personnel Chapter 7 Specifications lists detailed specifica tions of the controller and optional components Appendix Modbus Reference describes the Mod bus RTU communications protocol which is used to read and set parameter values through the serial com munications interface This information is intended for programmers writing software to communicate with the CPC400 Parameter Address Reference provides a way to quickly locate parameter addresses Watlow Anafaze 1 Chapter 1 System Overview Getting Started Safety Symbols A WARNING A CAUTION NOTE Initial Inspection Product Features CPC400 Series User s Guide These symbols are used throughout this manual Ind
256. y wiring The controller s placement affects place ment and wiring considerations for the other components of your system Ensure that there is enough clearance for mounting brack ets terminal blocks and cable and wire connections The controller extends up to 7 0 inches 178 mm behind the panel face and the screw brackets extend 0 5 inch 13 mm above and below it If using a straight SCSI cable allow for an additional 1 6 inches 41 mm beyond the terminal block If using a right angle SCSI cable allow an additional 0 6 inch 15 mm Refer to Figure 2 2 Watlow Anafaze 13 Chapter 2 Installation CPC400 Series User s Guide 1 0 in 7 0 in 1 6 in 1 0 in 7 0 in 0 6 in 25 mm 178 mm 41 mm 25 mm 178 mm 15 mm lt I gt a al gt o m A o my Figure 2 2 Clearance with Straight SCSI Cable L and Right Angle SCSI Cable R Maximum Panel Thickness 0 2 in 5 mm 1 80 0 020 in 45 7 0 5 mm 3 63 0 020 in a 92 2 0 5 mm Figure 2 3 Wiring Clearances We recommend you mount the controller in a panel not more than 0 2 in 5 mm thick 1 Choose a panel location free from excessive heat more than 50 C 122 F dust and unauthorized handling Make sure there is adequate clearance for the mount ing hardware terminal blocks and cables The con troller extends 7 0 in 178 mm behind the panel 14 Watlow Anafaze Doc 0
257. z This value must be greater than the value for Input low signal Values in parentheses are for serial communica tions and LogicPro Default 100 0 1000 for a process input 1000 1000 for a pulse input Watlow Anafaze 107 Chapter 5 Menu and Parameter Reference CPC400 Series User s Guide Modbus Address Loops 1 to 9 40615 to 40623 Parameter Number 38 LogicPro Driver Database LogicPro Address Loops 1 to 9 38 1 to 38 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Percentage Values on page 80 Input Range Low Loop Process UNITS For a process or pulse input enter the low process variable i T i for input scaling purposes This value will be displayed when the input signal is at the level set for Input low sig nal ALARM SETPOINT STATUS OUT This value and the value for Input low signal together de fine one of the points on the scaling function s conversion line See Setting Up a Process or Pulse Input on page 58 Values Any value between the minimum process variable for the selected display format see Table 5 9 on page 107 and the value for Input range high Default 0 Modbus Address Loops 1 to 9 40598 to 40606 Parameter Number 37 LogicPro Driver Database LogicPro Address Loops 1 to 9 37 1 to 37 9 Decimal Placement for Modbus or LogicPro See Dec imal Placement for Numeric Values on page 80 Input Low Signal Loop PROCESS UNTS For a process or pulse

CPC400 Series User's Guide

Contents

Download Pdf Manuals

Related Search

Related Contents