Home

988LF Manual - Zesta Engineering Ltd.

1. Release Tabs wage Figure 1 1 Press the release tabs to PROCESS remove the con B8gg8 mwe e o troller chassis OUT MAN L1 L2 SERIES 989LF Release Tabs Hardware Setup Chapter 1 WATLOW Series 988LF User s Manual 1 1 DIP Switches NOTE The Input 2 DIP switch is mounted upside down NOTE Only controllers with the indicated model numbers have these DIP switches Figure 1 2 Input DIP switches 1 2 O Set the input DIP switches to match the sen a sors you are using in your application Only con Input 1 DIP trollers with model num ber 98_L 2_ AA or 98 L 2 AA have an input DIP switch Controller Chassis Rear View Input 1 Input 2 Remote Set Point 98 1 2 AA 98 L 2 AA RTD thermocouple R S or B thermocouple J K T N E C D Pt2 or 0 50mV high impedance 0 20 or 4 20mA 0 5 1 5 or 0 10V WATLOW Series 988LF User s Manual Bee po 88 EEE Hardware Setup Chapter 1 DIP Switches A CAUTION The lockout DIP switch makes the Setup and Factory menus unavailable Configure all the Setup and Factory menus before lock ing them out Failure to do so could result in dam age to equipment in the event of a setup error Figure 1 3 Lockout DIP switch The lockout DIP switch hides
2. GENE A D overflow error The analog to digital A D converter at the input indicated by the first number is over range An open or reversed polarity sensor is the most likely cause Check the sensor Make sure the input Setup Menu is set to the correct sensor type The analog to digital A D converter input voltage may be too high to convert an A D signal ME Ambient temperature error WATLOW Series 988LF Users Manual 7 5 NOTE An alarm display will be masked by an error condition or when the control is in the Calibra tion or Setup menus The ambient temperature of the Series 988LF has dropped below 32 F 0 C or risen above 149 F 65 C Calibration errors can also cause this error code Try setting Calibration Menu to HE MEE RAM verification error An internal RAM failure has occurred Contact the factory 16333 Non volatile checksum error An EEPROM checksum error was detected Turn the power off then back on again If this does not clear the error contact the factory HRS Open loop detect This error is not available while in the on off mode It is only active when MANA is set to INES Diagnostics Menu HZZ Configuration error An incorrect module has been installed in the control Contact the factory Error Code Actions e All of the above error codes except EJ and will result in this condition e If the control was operating with stable output values less than 75 power and less than a
3. 2 7 Input 1 Wiring 2 8 Remote Set Point Option Wiring 2 9 Output 1 Wiring Output 2 Wiring Chapter 3 Front Panel and Display Loop 3 1 Keys and Displays 3 2 Display Loop Table of Contents Chapter 4 The Setup Menus 4 1 Navigating the Setup Menus 4 2 Setup Prompts Chapter 5 The Operation Menus 5 1 Navigating the Operation Menus 5 2 Display Prompts Chapter 6 The Factory Menus 6 1 Reaching the Diagnostics Menu 6 5 Reaching the Calibration Menu Chapter 7 Tuning Manual Operation Alarms and Error Codes 7 1 Auto tuning Heat and or Cool 7 2 Manual Tuning 7 3 Manual and Automatic Operation 7 4 Using Alarms 7 5 Error Code E1 and E2 Messages 7 6 Error Code Actions Appendix A 1 Warranty and Returns A 2 Glossary A 4 Index A 6 Specifications A 7 Model Number A 8 Menu Overview A 9 Declaration of Conformity WATLOW Series 988LF User s Manual Introduction To The Watlow Figure Int 1 The Series 988LF Features Introduction Series 988LF Controllers Auto Tune Heat Cool e o WATLOW PROCESS Input 1 Output 1 Sensor Input Q 8 B L Control Heat Cool o o E 2 DEV DISPLAY OUT Output 2 Input 2 Control Remote Set Heat Cool Point Option Alami Ol 9 1 SERIES 988LF Process Deviation from Set Point Percent Power Welcome to the Watlow Series 988LF a dual output single input micro processor based 1 8 DIN auto tu
4. Panel A a te Mounting Bracket 2 1 Installation NOTE Removing the con troller chassis from its case makes mounting easier Figure 2 2 Side and top view A CAUTION Follow the installa tion procedure exactly to guarantee a proper NEMA 4X seal Make sure the gasket between the panel and the rim of the case is not twisted and is seat ed properly Failure to do so could result in damage to equipment Installing the Series 988LF Installing and mounting requires access to the back of the panel 1 Make a panel cutout 2 To remove the controller chassis from its case press in firmly on the two tabs on one side or the top of the bezel until they unsnap then unsnap the two tabs on the opposite side or the bottom Pull the chassis out of the case by gently rocking it 3 Slide the case into the panel cutout Check to see that the gasket is not twisted and is seated within the case bezel flush with the panel Slide the mounting collar over the back of the control Side 986LF or 988LF or Top and Bottom 987LF or 989LF View Top and Bottom 986LF or 988LF Panel lla Baa or Side 987LF or 989LF View E A Pp Co nL 0 ES y 2 Wi 1 asas if I ae l i i 7 Sa Release Tabs a oY Ra ies 2 E gt gt r Mounting Slots Bezel a EE EN A 7 T f External Gasket Mounting Collar
5. Satisfaction Warranty The Watlow Series 988LF is warranted to be free of defects in material and workmanship for 36 months after delivery to the first purchaser for use providing that the units have not been misapplied Since Watlow has no control over their use and sometimes misuse we cannot guarantee against failure Watlow s obligations hereunder at Watlow s option are limited to replacement repair or refund of purchase price and parts which upon examination prove to be defective within the warranty period specified This warranty does not apply to damage resulting from transportation alteration misuse or abuse Watlow Controls Watlow Controls is a division of Watlow Electric Manufacturing Company St Louis Missouri a manufacturer of industrial electric heating products since 1922 Watlow begins with a full set of specifications and completes an industrial product that is manufactured totally in house in the U S A Watlow products include electric heaters sensors controls and switching devices The Winona operation has been designing solid state electronic control devices since 1962 and has earned the reputation as an excellent supplier to original equipment manufacturers These OEMs depend upon Watlow Controls to provide compatibly engineered controls which they can incorporate into their products with confidence Watlow Controls resides in a 100 000 square foot marketing engineering and manufacturing facility in W
6. This prompt appears only if parameter is set to EA If Default lowest value of value of BED or WEED sensor in Setup Menu range EEE A Alarm Hi Select the high trigger value for the output 2 alarm Represents the high process alarm or high deviation alarm This prompt appears only if parameter is set to Ala If Default y y value of highest ve or SEE value of ALO in Setup Menu sensor range EEEE ALO Operations Menu Chapter 5 ry a po NOTE For more information on auto tune see Chapter 7 Operations Menu Chapter 5 Calibration Offset Add or subtract degrees from the input signal This allows you to compensate for lead resistance sensor errors or other factors This prompt always appears If Default y Auto tune Initiate an auto tune This prompt always appears Default y LL Ga AUE Local remote Selects a local or remote set point With selected the controller displays the remote set point rather than the internal local set point and the set point cannot be changed with the Up arrow 439 or Down arrow GJ key This prompt appears if Setup Menu is not equal to MT Default L pa rid L B M WATLOW Series 988LF Users Manual 5 7 5 8 WATLOW Series 988LF Users Manual Operations Menu Chapter 5 Chapter 6 The Factory Menus Reaching the Diagnostics Menu O Press the Up arrow YY and Down arrow keys together and hold until the prompt appears i
7. Central Standard Time or e mail to wintechsupport watlow com We Value Your Feedback Your comments and suggestions on this manual are welcome Please send them to Technical Writer Watlow Controls P O Box 5580 Winona MN 55987 5580 or call 507 454 5300 or fax 507 452 4507 The Series 988LF User s Manual is copyrighted by Watlow Winona Inc October 1999 with all rights reserved 1831 Introduction WATLOW Series 988LF User s Manual iii iv WATLOW Series 988LF User s Manual Introduction Chapter 1 Hardware Setup DIP Switch Locations and Functions The Watlow Series 988LF has at least one and as many as three dual in line package DIP switches inside the controller depending on the model number They allow users to configure the controller for a variety of input sensors or to lockout front panel access to some functions To set any DIP switch e Remove the controller from the case by pressing firmly on the two release tabs on one side or the top of the bezel until they unsnap Then firmly press the two release tabs on the opposite side or the bottom of the control until they unsnap You will need to gently rock the bezel back and forth to release it from the chassis Use the illustrations on the following pages to locate and set each DIP switch WATLOW IIA PROCESS 8888 Release E a Release Tabs Tabs ne DISPLAY OUT MAN o SERIES 988LF
8. rica del EMC parte 2 Ambiente industrial EN 61000 4 2 1995 Descarga electrost tica EN 61000 4 4 1995 Perturbaciones transitorias el ctricas r pidas EN 61000 4 3 1996 Inmunidad radiada EN 61000 4 6 1996 Inmunidad conducida ENV 50204 1995 Tel fono port til EN 50081 2 1994 Norma de emisi n gen rica del EMC parte 2 Ambiente industrial EN 55011 1991 L mites y m todos de medici n de caracter sticas de perturbaciones de radio correspondientes a equipos de radiofrecuencia industriales cient ficos y m dicos Grupo 1 Clase A EN 61000 3 2 1995 L mites para emisiones de corriente arm nica EN 61000 3 3 1995 Limitaciones de fluctuaciones del voltaje 73 23 EEC Directiva de baja tensi n 1993 Requerimientos de seguridad para equipos el ctricos de medici n control y uso en laboratorios Parte 1 Requerimientos generales EN 61010 1 Winona Minnesota USA Place of Issue Erwin D Lowell Name of Authorized Representative January 9 1996 Date of Issue General Manager Title of Authorized Representative Opa El Signature of Authorized Representative Watlow Series 988LF User s Manual Watlow Controls 1241 Bundy Boulevard P O Box 5580 Winona Minnesota USA 55987 5580 Phone 507 454 5300 Fax 507 452 4507 http www watlow com
9. 18 DIN panel mount NEMA 4X IP65 equivalent front panel e Overall width x height x depth e Horizontal 4 03 x 2 18 x 4 74 102 mm x 55 mm x 120 mm e Vertical 2 18 x 4 03 x 4 74 55 mm x 102 mm x 120 mm e Depth behind panel 4 06 103 mm e Weight less than or equal to 14 0 oz 0 40kg Input Range Specified temperature ranges represent the controller s operational span Thermocouple Available with basic or universal signal conditioner Type C 32 to 4200 F or O to 2316 C Type D 32 to 4200 F or O to 2316 C Type E 328 to 1470 F or 200 to 799 C Type J 32 to 1500 F or O to 816 C Type K 328 to 2500 F or 200 to 1371 C Type N 32 to 2372 F or O to 1800 C Type T 328 to 750 F or 200 to 399 C Pt 2 32 to 2543 F or O to 1395 C A 6 WATLOW Series 988LF Users Manual Available with universal signal conditioner Type B 1598 to 3300 F or 870 to 1816 C Type R 32 to 3200 F or O to 1760 C Type S 32 to 3200 F or O to 1760 C RTD Resolution DIN or JIS Avail w universal signal conditioner 1 DIN 328 to 1472 F or 200 to 800 C 1 JIS 328 to 1166 F or 200 to 630 C 0 1 DIN and JIS 99 9 to 999 9 F or 73 3 to 537 7 C Process Available with universal signal conditioner 0 50mV dc 999 to 9999 units 0 5V dc 999 to 9999 units 1 5V dc 999 to 9999 units 0 10V dc 999 to 9999 units 0 20mA dc 999 to 9999 units 4 20mA dc 999 to 9999 units Output Options e Solid stat
10. 2 AA 68 a DI Bee on Fano i e Input impedance 20MQ J K T N C E D Pt2 R S B a 0 50mV DIP Settings DIP Settings 10 S 0 50mV Figure 2 70 RTD 2 or 3 Wire 1000 Jumper Universal signal conditioner 9 to 10 7 a 98_L 2 AA for 2 wire E RTD o o y sis inn it DIP Switch 10 S Setting Figure 2 7c 0 5V 1 5V or 0 10V dc Process Universal signal conditioner 98_L 2 AA Input impedance 10KQ eS DIP Switch Setting Figure 2 7d 0 20mA or 4 20mA Process Universal signal conditioner 98_L 2 AA GE Input impedance 72 BE WE DIP Switch E Setting Q 000 ee WATLOW Series 988LF User s Manual 2 7 Input 2 Wiring Figure 2 82 Thermocouple or 0 50mV high impedance NOTE Successful installa tion requires five steps Model number and software choice Appendix DIP switch set tings Chapter 1 Sensor match Chapter 2 and Appendix Sensor installation Chapter 2 and e Wiring Chapter 2 A CAUTION An external resistor is required for 0 20mA and 4 20mA process wiring to prevent a high in rush current which could burn out the controller s 7 ohm resistor See page 2 4 for recommen dations 2 8 WATLOW Series 988LF User s Manual Universal signal conditioner 98_L _2 AA bgi Aig hi Input impedance 20MQ ci ral J K T N C E D Pt2 R S B 0 50mV D
11. 4 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 controller Push each bracket backward then down to secure it to the control case To guarantee a proper NEMA 4X seal Series 986LF and 988LF units vertical must have the mounting brackets located on either side of the unit When installing Series 987LF and 989LF units horizontal the brackets must be on the top and bottom of the unit 5 Make sure the case is seated properly Tighten the installation screws firmly against the mounting collar to secure the unit To ensure a NEMA 4X seal there should be no space between the bezel and panel Overtightening the screws will distort the case and make it dif ficult to remove or replace the controller 6 Insert the controller chassis into its case and press the bezel until all four tabs snap Make sure the inside gasket is seated properly and not twisted 7 To release the mounting brackets loosen the mounting bracket screws and push the brackets forward then pull it up and out 2 2 WATLOW Series 988LF User s Manual Installation and Wiring Chapter 2 A WARNING To avoid potential electric shock use National Electric Code NEC safety practices when wiring and connect ing this unit to a power source and to electrical sensors or peripheral devices Failure to do so could result in inju
12. 988LF controller Pressing the Display key returns the controller to the Display Loop from any prompt in any menu The controller automatically returns to the Display Loop from any menu when a minute passes without any keys being pressed ee input 1 reading set point 1 change with Up arrow 29 or Down arrow GJ key DE ron input 1 reading EEEE deviation from set point process 1 minus set point 1 DEV light on sa MEE current input 1 reading a percent output Y OUT light on current input 1 reading units selected units F or C DISPLAY 3 2 WATLOW Series 988LF User s Manual Front Panel and Display Loop Chapter 3 Chapter 4 The Setup Menu Navigating the Setup Menu The Setup Menu displays the parameters that configure the Series 988LF s features to your application sacada O To enter the Setup Menu press the Up arrow YY CC and Down arrow keys for three seconds The LOE lower display shows the LOC prompt and the upper displays shows its current level All keys are inactive until you release both keys Enter your settings from the controller s Lock Upper display as As a ee LOL LOE Lot Input 1 O Press the Up arrow Y or the Range Low 1 Down arrow key to select one of the prompt values Range High 1 RTD Calibration Curve Decimal Figure 4 1 Remote Set Point The Setup Menu Range Low 2 Range High 2 MA Corr cy Output 1 TI P
13. 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 retransmit output An analog output signal that may be scaled to represent the process value or set point value RTD See resistance temperature detector slidewire feedback A method of controlling the position of a valve It uses a potentiometer to vary resistance and indicate position of the valve switching sensitivity In on off control the temperature change necessary to change the output from full on to full off See hysteresis thermal system A regulated environment that consists of a heat source heat transfer medium or load sensing device and a control instrument 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 leadwire connection to the instrument cold junction thermocouple break protection The ability of a control to detect a break in the thermocouple circuit and take a prede termined action three mode control Proportioning control with integral reset and derivative rate Also see PID time proportioning c
14. its contents make a claim with the shipper immediately Save the original shipping carton and packing material WATLOW Series 988LF Users Manual A 1 Glossary annunciator A visual display that uses pilot lights to indicate the former or existing condition of several items in a system bumpless transfer A smooth transition from auto closed loop to manual open loop operation The control output s does not change during the transfer burst fire A power control method that repeatedly turns on and off full AC cycles Also called zero cross fire it switches close to the zero voltage point of the AC sine wave Variable time base burst fire selectively holds or transits AC cycles to achieve the desired power level calibration offset An adjustment to eliminate the differ ence between the indicated value and the actual process value cascade Control algorithm in which the output of one control loop provides the set point for another loop The second loop in turn determines the control action closed loop A control system that uses a sensor to measure a process variable and makes decisions based on that feedback cold junction See junction cold cold junction compensation Electronic means to compen sate for the effective temperature at the cold junction current transformer A transformer designed for measuring electrical current dead band The range through which a variation of th
15. point 2 5 2 FINA default 4 3 ERRE Diagnostics Menu 6 1 FRET test displays 6 3 j G U V W X Y Z ERY test outputs 6 4 A D underflow error 7 5 A D underflow error 7 5 sensor under range error 7 5 sensor under range error 7 5 sensor over range error 7 5 sensor over range error 7 5 A D overflow error 7 5 A D overflow error 7 5 ambient temperature error 7 6 RAM identification error 7 6 non volatile checksum error 7 6 configuration error 7 6 WATLOW Series 988LF Users Manual A 5 Specifications 1064 Line Voltage Power e 100 240VX ac dc 10 15 50 60Hz 5 e 24 28Vx ac dc 10 15 50 60Hz 5 e Power consumption 16VA maximum Operating Environment e 32 to 149 F 0 to 65 C e O to 90 RH non condensing Storage Temperature e 40 to 185 F 40 to 85 C Agency Approvals e UL C UL File 43684 e CE 89 336 EEC Electromagnetic Compatibility Directive EN 50081 2 1994 Emissions EN 50082 2 1995 Immunity e 73 23 EEC Low Voltage Directive EN 61010 1 1993 Safety e NEMA 4X Terminals e 6 compression universal head screws tighten to 5 inch pounds maximum accepts 20 14 gauge wire Accuracy e Calibration accuracy and sensor conformity 0 1 of span 1 LSD 77 F 5 F 25 C 3 C ambient and rated line voltage 10 Accuracy span 1000 F 540 C minimum Temperature stability 0 2 F F 0 1 C C change in ambient Mechanical e
16. prompt setting To move backwards through the menu hold the Mode key QB down and press the Up arrow key C9 Refer to the Appendix for model number options Set Point 2 Select a second set point that will activate output 2 This allows you to boost the heating reverse acting or cooling direct acting action of the output 1 device e The range and default settings depend on the MO HAH and settings Setup Menu This prompt appears only if and Setup Menu are both set to or MATA Proportional Band Output 1 Select the proportional band for PID output 1 If set to MM it functions as an on off control with a 3 F or 1 7 C switching differential for ranges displayed in whole degrees and 0 3 F or 0 17 C for ranges displayed on 0 1 The default is 25 F 17 C This prompt always appears If Default y J POF A EEEE Pol Pb Pb Setup Menu EE EZ rtd SS E aon EEB FA R3339 Input 1 Pb It Pb Pb Setup Menu ald A o nS Pb Pb Setup Menu iS En EA Eo Ean Input 1 Pb i Pb Pb Setup Menu WATLOW Series 988LF Users Manual Operations Menu Chapter 5 rel r Al Operations Menu Chapter 5 Reset Output 1 Tune the control action to eliminate the offset or droop between the set point and the actual process value for PID output 1 This prompt appears only if MEN is set to greater than BR Default Hy EEEE repeats min Rate Output 1 Tune the rate to eliminate
17. set to META 2 Proportional Band Adjustment Gradually increase until the upper display process value stabilizes at a constant value The process value will not be right on set point because the initial reset value is 0 00 repeats per minute If NAS is set to MA then es TS and are inoperative and the Series 988 functions as a simple on off control The prompt determines the switching differential value 3 Reset Integral Adjustment Gradually increase or HA until the upper display process value begins to oscillate or hunt Then slowly decrease or HA until the upper display stabilizes again near set point 4 Cycle Time Adjustment Set as required Faster cycle times sometimes achieve the best system control However if a mechanical contactor or solenoid is switching power to the load a longer cycle time may be desirable to minimize wear on the mechanical compo nents Experiment until the cycle time is consistent with the quality of control you want will not appear on units with a process output 98_ _F __ or98_ __F __ 5 Rate Derivative Adjustment Increase or to 0 10 minute Then raise set point by 20 to 30 F or 11 to 17 C Observe the system s approach to the set point If the load process value over shoots the set point increase or to 0 50 minutes 7 2 WATLOW Series 988LF Users Manual Tuning Manual Operation Alarms and Error Codes Chapter 7 Raise the set point by 20 to 30 F or 11 to 17 C and watch
18. the Setup Menu and the Factory Menus Diagnostics and Calibration All units have a lockout DIP switch no hardware lockout Switch 1 has no effect lockout Setup and Factory menus Switch 1 has no effect Hardware Setup Chapter 1 Lockout DIP Control Chassis Top View 986LF amp 988LF Left side View 987LF amp 989LF or or WATLOW Series 988LF User s Manual 1 3 1 4 WATLOW Series 988LF User s Manual Hardware Setup Chapter 1 Chapter 2 NOTE Space panel cutouts at least 1 66 inches 42 2mm apart NOTE Adjustable mount ing brackets can be side mounted NOTE Holes can be cut in the panel using a Greenlee 1 8 DIN Hydraulic Kit 60068 punch 60069 die 60070 Figure 2 1 Series 988LF and Series 989LF dimensions Installation and Wiring Installation and Wiring WATLOW g8EL PROCESS 8888 eo Li L2 DEV e DISPLAY MAN SERIES 988LF 4 03 102mm 2 18 55 mm Panel Cutout Maximum Panel Thickness 0 38 9 65mm 3 62 0 03 0 00 92mm 0 8 1 77 0 02 0 00 45mm 0 6 Chapter 2 WATLOW TENSO PROCESS 8888 ds D L1 L2 SERIES 989LF 18 mm 0 68 17 mm WATLOW Series 988LF User s Manual Adjustable ee PA 4 06 103 mm
19. the ap proach to the new set point If you increase or too much the approach to set point will be very sluggish Repeat as necessary until the system rises to the new set point without over shooting or approaching the set point too slowly 6 Calibration Offset Adjustment You may want your system to control to a process value other than the value coming from the input sensor If so measure the difference between that process value perhaps at another point in the system and the process value showing in the upper display Then enter the offset value you want Calibra tion offset adds or subtracts degrees from the value of the input signal Manual and Automatic Operation To change from auto to manual operation press the Auto Man key twice Manual operation provides open loop control of the outputs from a range of 100 to 100 output The Series 988LF allows a negative output value only when or HEBE Output Menu is set to cool Auto matic operation provides closed loop on off or PID control When the operator transfers from a closed loop to an open loop the Series 988LF retains the power level from the closed loop control When the Series 988LF returns to closed loop control it restores the previous set point value The Auto Man LED located on the Auto Man key 9 indicates whether the controller is in automatic or manual operation When the LED is lit the control is in manual operation When the LED is off it is in automatic
20. 000 4 4 1995 Elektrische schnelle St6Be EN 61000 4 3 1996 Strahlungsimmunitat EN 61000 4 6 1996 Leitungsimmunitat ENV 50204 1995 Mobiltelefon EN 50081 2 1994 EMC Rahmennorm f r Emissionen Teil 2 Industrielle Umwelt EN 55011 1991 Beschrankungen und Methoden der Messung von Funkst rungsmerkmalen industrieller wissenschaftlicher und medizinischer Hochfrequenzger te Gruppe 1 Klasse A EN 61000 3 2 1995 Grenzen der Oberwellenstromemissionen EN 61000 3 3 1995 Grenzen der Spannungsschwankungen und Flimmern 72 23 EEC Niederspannungsrichtlinie zu entsprechen EN 61010 1 1993 Sicherheitsrichtlinien f r Elektroger te zur Messung zur Steuerung und im Labor Teil 1 Allgemeine Richtlinien Declara que el producto siguiente Espa ol Designaci n Series 986 987 988 989 N meros de modelo 98 6 7 8 9 Cualquier letra 16 2 012346 5 BC DEFoK ABCDEFKoT ABCJKM NoT ABCDEKRS0T Cualquier combinaci n de dos letras Control categor a de instalaci n Il grado de contaminaci n ambiental II 100 a 240 V o 24 a 28V 50 60 Hz Clasificaci n Tensi n nominal Frecuencia nominal Consumo nominal de energ a 16 VA 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 50082 2 1995 Norma de inmunidad gen
21. 4 1995 T l phone cellulaire EN 50081 2 1994 Norme g n rique sur les missions lectromagn tiques Partie 2 Environnement industriel EN 55011 1991 Limites et m thodes de mesure des caract ristiques d interf rences du mat riel radiofr quence industriel scientifique et m dical Groupe 1 Classe A EN 61000 3 2 1995 Limites d mission d harmoniques EN 61000 3 3 1995 Limitations d carts de tension et de papillotement 73 23 EEC Directive li e aux basses tensions 1993 Exigences de s curit pour le mat riel lectrique de mesure commande et de laboratoire Partie 1 Exigences g n rales EN 61010 1 1230 Declaration of Conformity Erkl rt da das folgende Produkt Deutsch Beschreibung Serie 986 987 988 989 Modellnummer n 9 8 6 7 8 oder 9 beliebiger Buchstabe 1 oder 2 0 1 23 4 oder 5 B C D E F oder K ABC DEFK oder T ABCJKMN oder T ABCDEKRS oder T 2 beliebige Buchstaben Klassifikation Regelsystem Installationskategorie II Emissionsgrad Il Nennspannung 100 bis 240 V oder 24 bis 28 V Nennfrequenz 50 60 Hz Stromverbrauch Max 16 VA Erfullt die wichtigsten Normen der folgenden Anweisung en der Europaischen Union unter Verwendung der untenstehenden einschlagigen Dokumente 89 336 EEC Elektromagnetische Ubereinstimmungsanweisung EN 50082 2 1995 EMC Rahmennorm f r St rsicherheit Teil 2 Industrielle Umwelt EN 61000 4 2 1995 Elektrostatische Entladung EN 61
22. 5 changeover the past 2 minutes when the error occurred it continues to operate at those levels on a percent power basis MHIE If output values were not stable or the percent output was greater than 75 the control outputs drop to 0 power off e To clear an error code e If is set to MAA the error code should clear once the problem is corrected e If is set to IEPS correct the problem and cycle power You can also clear the error by pressing both the Up arrow YY and Down arrow keys to enter the Setup Menu then press the Display key EM e Error codes WAR and will result in these conditions The control is in automatic operation with both control outputs off The alarm outputs are in their alarm state de energized with the LED lit The lower display is blank The upper display indicates the error code All keys are inactive With MA all Setup Menu prompts return to default values Cycle power to the control If the error is still present contact the factory 7 6 WATLOW Series 988LF Users Manual Tuning Manual Operation Alarms and Error Codes Chapter 7 Tuning Manual Operation Alarms and Error Codes Chapter 7 WATLOW Series 988LF Users Manual 7 7 7 8 WATLOW Series 988LF Users Manual Tuning Manual Operation Alarms and Error Codes Chapter 7 Appendix Warranty and Returns A 1 Glossary A 2 Index A 4 Specifications A 6 Model Number A 7 Menu Overview A 8 Declaration of Conformity A 9 Total
23. FERIA This prompt always appears Software Revision Shows the controller s software revision code This letter indicates the software revision of your controller EH AA This prompt always appears Serial Number Shows the controller s serial number The first two letters in the upper display are to indicate that the controller is in serial number mode The right half of the upper display shows the first two digits of the serial num ber The lower display shows the last four digits of the serial number CER 55718 This is what the controller with the serial number 0988345678 would display This prompt always appears Ambient Temperature Shows the ambient temperature at the Input 1 terminals The tem perature is shown in F in the form HHHH regardless of the settings of FEA CHT GETS o EA GIIA This prompt always appears Factory Use Only These prompts are used only at the factory EPR These prompts always appear WATLOW Series 988LF Users Manual Factory Menus Chapter 6 argar LEC fm Factory Menus Chapter 6 Factory Diagnostics Inputs 1 and 2 Module Types Displays which input module is installed in the controller Please document this value before contacting the factory for technical assistance Input Types No input module Thermocouple only module MAA Universal off Universal rtd Universal high gain thermocouple Universal low gain thermocouple Universal millivolts Uni
24. IP Settings DIP Settings Remote Set Point Option Figure 2 8b RTD 2 or 3 Wire 100Q Universal signal conditioner Jumper 98 L 2 AA 19 to 20 for 2 wire RTD Fii Su DIP Switch Senna A Remote Set Point Option o cad E o Figure 2 8c 0 5V 1 5V or 0 10V dc Process Universal signal conditioner E e E AAA 98_L _2 AA DIP Switch Setting Input impedance 10KQ Remote Set Point Option Figure 2 8d 0 20mA or 4 20mA Process Universal signal conditioner Pa pa Ic ae 98_L _2 AA DIP Switch Setting Input impedance 7Q Remote Set Point Option Installation and Wiring Chapter 2 NOTE Successful installa tion requires five steps Model number and software choice Appendix DIP switch set tings Chapter 1 Sensor match Chapter 2 and Appendix Sensor installation Chapter 2 and e Wiring Chapter 2 Installation and Wiring Chapter 2 Output 1 Wiring Figure 2 92 AC Outputs Solid state Relay with Contact Suppression 98_L B_ AA 0 5 amps minimum off state impedance 20KQ External NO Load 12 o o Electromechanical Relay with Contact Suppression NO and COM contacts only 98_L D_ AA Form C 5 amps minimum off state impedance 20KQ Electromechanical Relay without Contact Suppression 98_L E AA Form C 5 amps off state impedance 31MQ S
25. If a mechanical relay or contactor is switching power to the load a longer cycle time may be desirable to minimize wear on the mechanical components The typical life of a mechanical relay is 100 000 cycles Verify that the cycle time selected is appropriate for the output device type Failure to do so could result in damage to equipment and or property Tuning Manual Operation Alarms and Error Codes Chapter 7 Alarms and Error Codes Auto tuning Heat and or Cool The Series 988LF can automatically tune the PID parameters to fit the Characteristics of your particular thermal system Once the auto tune sequence has begun all PID values for both heat and cool are set to WA and the control goes into an on off mode of control at 90 of the established set point The displayed set point remains unchanged Auto tuning at a set point of 200 F auto tune complete auto tune begins set point process Temperature 1002 set point Time When the control finishes learning the system it resumes standard PID control using the PID values established by the auto tuning process Changing the set point during an auto tune restarts the auto tune procedure During auto tuning the process must cross the set point four times within an 80 minute time span for the Series 988LF to successfully complete the auto tune If this does not happen within the 80 minute time limit the Series 988LF chooses PID
26. LF error If the control was operating with stable output values less than 75 power and less than a 5 changeover the past 2 minutes when the error oc curred it continues to operate at those levels on a percent power basis GAED If output values were not stable or the percent output was greater than 75 the control outputs drop to 0 power off EF A D underflow error The analog to digital A D converter of the input indicated by the first number is under range An open or reversed polarity sensor is the most likely cause Check the sensor Make sure the input prompt is set to the correct sensor a WATLOW PROCESS 50 L1 L2 L3 LA DEV e DISPLAY OUT e AUTO MAN Cale gt SERIES 988 EME Sensor under range error The sensor at the input indicated by the first number generated a value lower than that allowed for the range of the sensor or the analog to digital A D converter malfunctioned Make sure the setting for the input Setup Menu matches the sensor type and that the sensor range falls within the range of the process being controlled GEHE Sensor over range error The sensor at the input indicated by the first number generated a value higher than that allowed for the range of the sensor or the analog to digital A D converter malfunctioned Make sure the setting for the input Setup Menu matches the sensor type and that the sensor range falls within the range of the process being controlled
27. OW Series 988LF User s Manual A WARNING To avoid potential electric shock use National Electric Code NEC safety practices when wiring and connect ing this unit to a power source and to electrical sen sors or peripheral devices Failure to do so could result in injury or death A WARNING Install high or low temperature limit control protection in systems where an over tempera ture fault condition could present a fire hazard or other haz ard Failure to install temperature limit control protec tion where a poten tial hazard exists could result in dam age to equipment property and injury to personnel A WARNING To avoid damage to property and equip ment and or injury of loss of life use National Electric Code NEC stan dard wiring prac tices to install and operate the Series 988LF Failure to do so could result in such damage and or injury or death Figure 2 5 System wiring example Installation and Wiring Chapter 2 Wiring Example L1 120 V ac L2 earth ground high limit mechanical contactor high temp limit light fuse SSR 240 10A DC1 solid state relay heater a Series 146 limit control LI 146D 1J1F 1100 1011121314151617 90000000 00 T optional normally open momentary switch 988L 10CA AARR rear view process sensor limit sensor O Series 988LF 988L 10CA AARR O Temperatur
28. SEH MEE W5 W3 high impedance 0 50 CEEE EEEE EERE EEE MIER EXA EHEN EEA 98 1 2 AA only MER EXA UN CRE 4 4 WATLOW Series 988LF Users Manual Setup Menu Chapter 4 Default Default Default Default y y y y Range Low and Range High continued from previous page b EEA EENM EEND EHG NOTE process The range high 4 20 CEEE MEEE units value for process inputs can be extended 0 90 E EEEE units to EEEE GER EER units l 5 GEE EEEE units 18 18 EEE EEEE units EEE EEEE units l gt CC RTD Calibration Curve Select the RTD calibration curve The RTD input uses either the European DIN 0 003850 ohms ohms C or Japanese JIS 0 003916 ohms ohms C linearization standard This prompt appears only if you have set to or I Default red red Setup Menu Chapter 4 WATLOW Series 988LF Users Manual 4 5 Setup Q fm ry Remote Set Point Input continued on next page Decimal Select the decimal point location for process type input 1 data This prompt in conjunction with the Range Low and Range High prompts allows you to format and limit units of measure for process 1 e All prompts with units of measure related to input 1 will display in the selected decimal format e This affects propbands alarm set points process set points calibration offsets deadbands and ranges This prompt appears only if you have set input 1 toa process input or a the
29. Series 988LF User s Manual Includes 986L 987L 988L and 989L a 4888 PROCESS Ll ia 1 8 DIN Microprocessor Based Temperature Process Controller User Level Targeted e New User sica go to page i C 96 e Experienced Usev go to page 2 1 e Expert Usel ceeeeeeeees go to page A 8 Installers WRAL e Setup id cccrcntsatentsenossiveneuetawncs go to page 4 1 CUSIOMER e Wiring Installation go to page 2 1 SATISFACTION 3YearWananty ISO 9001 ASS IZ AS Registered Company Winona Minnesota USA WATLOW Watlow Controls 1241 Bundy Boulevard P O Box 5580 Winona Minnesota USA 55987 5580 Phone 507 454 5300 Fax 507 452 4507 http www watlow com 0600 0009 0000 Rev C 10 00 October 1999 dee Made in the U S A Supersedes 0600 0009 0000 Rev B Printed on Recycled Paper 10 Postconsumer Waste Table of Contents Introduction to the Watlow Series 988LF Controllers ii Using this Manual ii Document Every Step iii Notes Cautions and Warnings iii Technical Assistance iii We Value Your Feedback Chapter 1 Hardware Setup 1 1 Dip Switch Locations and Functions Chapter 2 Installation and Wiring 2 1 Panel Cutout and Dimensions 2 2 Installing the Series 988LF 2 3 Wiring the Series 988LF 2 3 Input to output Isolation 2 3 Power Wiring 2 3 Sensor Installation Guidelines 2 4 Wiring 0 20mA and 4 20mA Process Inputs 2 5 Wiring Example
30. ail to light contact the factory This prompt always appears Default Open Loop Checks the control loop consisting of the controller output power control heater and sensor With open loop enabled the controller moni tors the output power level and checks for a change in the process input value If the output power is at maximum for a period of time equal to the reset time and the process input has not changed by at least 5 F the controller will switch to manual mode at 0 output power and will be displayed in the lower display To clear this error enter the Setup Menu and press the display key Gj To get back into auto mode press the Auto Man key 9a MANA This prompt always appears Default DPLP OPLP 6 4 WATLOW Series 988LF Users Manual Factory Menus Chapter 6 Reaching the Calibration Menu O Press the Up arrow YY and Down arrow 2 keys together and hold until the prompt appears in the lower display Press and hold again until the prompt appears in the lower display O Use the Up arrow key PY to select the Calibration Menu in the upper display o Diagnostics Calibration Menu Menu p 6 1 p 6 5 Press the Mode key 3 to step through the prompts As O Press the Up arrow key Y or the Down arrow key to select one of the prompt values Refer to Calibrating Watlow Process Controls for information about the Calibration Menu A CAUTION Before attempting to calibrate make sure you have
31. ailable current weakens or damages the internal resistor Example 20V 7 ohms 2 857mA too much The wiring diagram example below shows an application where a customer is using a 4 20mA dc transmitter and power supply to feed the input of a Series 988 controller The Rx range 100 to 400 ohms for the external resistor is recommended We suggest starting with 250 ohms Example Customer is using a 24V dc power supply to power up the 4 20mA dc transmitter that inputs to the Series 988 terminals 8 and 10 To figure out what the internal Series 988 s handling current is for the 0 20mA or 4 20mA dc input to the Series 988 controllers we need to apply Ohm s Law The square root of Watts divided by Resistance equals Current Applying that formula to the example below produces the follow ing Square Root of 0 125 Watts 7 ohms 134 mA dc handling input current This is the acceptable input current for the Series 988 universal input board 988 Process Input Control 4 20mA dc Transmitter 24V dc 100 to 400 Power Supply ohms Reminder the input impedance of 7 ohms handles the majority of our customer applications the external resistor Rx is only for certain trans ducers transmitters that spike on power up or power down Please make sure your customer s transmitter transducer fall within our Series 988 family 1 8 DIN of controllers Process Input specification of 7 ohms input impedance 2 4 WATL
32. ckout DIP switch the Up arrow key to move backwards through the cur rent menu Scrolling stops menu Figure 3 1 Series 988LF Keys and Displays Front Panel and Display Loop Chapter 3 when you reach the top of the Lower Display Indicates the set point deviation percent power temperature unit menu prompt name or alarm code L1 L2 These LED s indicate when output 1 or 2 are active Outputs can be configured as Oti Control Ot2 Control or Alarm Display Key Pressing this key enters the Display Loop Press the Display key at any time to return to this loop The next page has more information on the Display Loop Auto Man Key In Manual mode the lower display shows percent output Pressed once it clears a latched alarms If pressed again within five seconds it will toggle between Auto and Manual mode Enters new data and steps to the next prompt in the current Auto Man LED Lit when the control is in Manual operation Press the Auto Man key twice to enter Automatic operation When blinking press the Auto Man key to toggle between Auto and Manual After five seconds without pressing the Auto Man key the LED stops blinking and returns to its previous state WATLOW Series 988LF User s Manual 3 1 Display Loop NOTE For information on input 1 HA ranges refer to Chapter 4 Figure 3 2 The Display Loop Display Loop The Display Loop is the home state of the Series
33. des 7 6 closed loop A 2 cold junction A 2 consumer feedback iii controller chassis removing 1 1 current transformer A 2 cycle time output 1 5 3 output 2 5 5 D date 6 2 dead band 5 5 decimal 4 6 decimal point location of 4 2 default A 2 derivative A 2 deviation alarm 7 4 DEV LED set point deviation 3 1 Diagnostics Menu 6 1 6 4 dimensions 2 1 DIN A 2 DIP switch functions 1 1 1 3 DIP switch locations 1 1 1 3 DIP switch setting input 1 2 lockout 1 3 display 6 3 Display Key 3 1 Display Loop 3 2 displays 3 1 documentation maintaining ii 6 3 Down arrow Key 3 1 droop A 2 dual in line package DIP switches 1 1 1 3 duty cycle A 2 error code messages 7 5 7 6 error code results 7 6 error codes clearing 7 6 external signal conditioner power supply A 2 F Factory Menus 6 1 6 5 factory ship date 6 2 feedback iii formA A 2 form B A 2 form C A 2 front panel 3 1 front panel lockout 4 2 G Glossary A 2 A 3 ground loops 2 3 H Input 1 4 3 input 1 wiring 2 7 0 5V dc process 2 7 0 10V dc process 2 7 0 20mA process 2 4 2 7 0 50mV high impedance 2 7 1 5V dc process 2 7 4 20mA process 2 4 2 7 RTD 2 or 3 wire 2 7 thermocouple 2 7 input DIP switches 1 2 0 5V 1 2 0 10V 1 2 0 20mA 1 2 O 50mV 1 2 O0 50mV high impedance 1 2 1 5 1 2 4 20mA 1 2 RTD 1 2 thermocouple 1 2 input module 6 3 input ranges tables input 1 4 4 4 5 remote set point option 4 7 4 8 inp
34. e input produces no noticeable change in the output In the dead band specific conditions can be placed on control output actions Operators select the dead band It is usually above the heating proportional band and below the cooling propor tional band default parameters The programmed instructions that are permanently stored in the microprocessor software derivative The rate of change in a process variable Also known as rate See PID DIN Deutsche Industrial Norm A set of technical scientific and dimensional standards developed in Germany Many DIN standards have worldwide recognition DIN a mite Watlow family of SCR power controls droop In proportional controllers the difference between set point and actual value after the system stabilizes duty cycle The percentage of a cycle time in which the output is on external signal conditioner power supply A dc voltage source that powers external devices filter digital filter DF A filter that slows the response of a system when inputs change unrealistically or too fast Equivalent to a standard resistor capacitor RC filter A 2 WATLOW Series 988LF Users Manual digital adaptive filter A filter that rejects high frequency input signal noise noise spikes heat cool output filter A filter that slows the change in the response of the heat or cool output The output responds to a step change by going to approximately 2 3
35. e Control SSR 240 10A DC1 Solid State Relay O 48 260V ac Series 146 146D 1J1F 1100 Temperature Limit QQOOO OOO high temperature light WATLOW Series 988LF User s Manual 2 5 Wiring Notes L1 A WARNING To avoid damage to property and equip ment and or injury of loss of life use National Electric Code NEC stan dard wiring prac tices to install and operate the Series 988LF Failure to do so could result in such damage and or injury or death NOTE Sketch in your appli cation on this page or a copy of it See wiring examples in this chapter and in the Appendix Figure 2 6 Wiring notes 2 6 WATLOW Series 988LF User s Manual earth ground Installation and Wiring Chapter 2 L2 NOTE Successful installa tion requires five steps Model number and software choice Appendix DIP switch set tings Chapter 1 Sensor match Chapter 2 and Appendix Sensor installation Chapter 2 and e Wiring Chapter 2 A CAUTION An external resistor is required for 0 20mA and 4 20mA process wiring to prevent a high in rush current which could burn out the controller s 7 ohm resistor See page 2 4 for recommen dations Installation and Wiring Chapter 2 Input 1 Wiring Figure 27a Thermocouple or 0 50mV high pas Thermocouple only 98_L 1 AA no DIP switches a Universal signal conditioner a Ml 98 L
36. e P propor tional value of PID control rate band A range in which the rate function of a controller is active Expressed in multiples of the proportional band See PID ratio A method by which the controller measures the flow of an uncontrolled variable and uses a proportion of it to control the flow of a second variable reference junction See junction reset Control action that automatically eliminates offset or droop between set point and actual process temperature Also see integral automatic reset The integral function of a PI or PID temperature controller that adjusts the process tempera ture to the set point after the system stabilizes The inverse of integral Appendix Glossary automatic power reset A feature in latching limit controls that does not recognize power outage as a limit condition When power is restored the output is re energized automatically as long as the temperature is within limits manual reset 1 A feature on a limit control that requires human intervention to return the limit to normal operation after a limit condition has occurred 2 The adjust ment of a proportional control to raise the proportional band to compensate for droop no key reset A method for resetting the controller s memory for instance after an EPROM change resistance temperature detector RTD A sensor that uses the resistance temperature characteristic to measure temperature
37. e relay 0 5A 24V ac min 253V ac max opto isolated burst fire With or without contact suppression Open collector switched de signal provides a minimum turn on voltage of 3V dc into a minimum 500 load maximum on voltage not greater than 32V dc into an infinite load isolated Electromechanical relay Form C 5A 120 240 ac 6A 28V dc 1 8 hp 120V ac or 125VA 120V ac With or without contact suppression Off state output impedance with RC suppression is 20k Process 0 20mA dc 4 20mA dc into 800 maximum 0 5V dc 1 5V dc or O0 10V dc into 1k minimum reverse acting isolated Electromechanical relays are warranted for 100 000 closures only Solid state switching devices are recommended for applications requiring fast cycle times or extended service life Not an ANSI symbol N Appendix Model Number Ordering Information 1319 To order complete the code number to the right with the information below 98 L AA TETT dr Series 988LF Single channel 1 8 DIN temperature process controller vertical or horizontal mount Hardware 6 24 28Vx ac dc vertical mounting 7 24 28Vx ac dc horizontal mounting 8 100 240VX ac dc vertical mounting 9 100 240VX ac dc horizontal mounting Software L Standard 1 Input l1 Basic thermocouple signal conditioner excludes tc types B R and S RTD Process inputs 2 Universal signal cond
38. en Collector 19 to 32V VDC CRAL en le Minimum load resistance 5000 98_L ___ 19 External lo Load COM Installation and Wiring Chapter 2 Chapter 3 Front Panel and Display Loop Keys and Displays Upper Display Indicates the actual process value prompt parameter value or error code Se e WATLOW DEV LED When lit the lower display shows the current deviation from the set point a OUT LED When lit the lower display shows the current percent output S Up arrow Key Increases the value or changes the parameter in the upper display except for set point changes in the Display Loop which occur in the lower display Hold the key down to increase the value rapidly New data takes effect in five seconds or when the Mode key or Display key is pressed DEV o out o bisPLav Down arrow Key Decreases the value or changes the parameter in the upper display except for set point changes in the Display Loop which occur in the lower display Hold the key down to decrease the value rapidly New data takes effect in five seconds or when the Mode key or Display key is pressed Mode Key if menu Mode Up arrow Keys Hold the Mode key then press Up Down Keys Press simultaneously for three sec onds to go to the Setup Menu Continue to press both keys for another three seconds to go to the Factory Menu Access to the Setup and Factory menus can be dis abled with lo
39. he alarm output is indicated by the corresponding LED on the front panel L2 There may be an alarm message flashing in the lower display When an alarm message is displayed it alternately flashes with the current prompt at a one second interval in the lower display To clear a latching alarm first correct the condition then press the Auto Man key once Alarm silencing is available with all alarms This function overrides the alarm on initial power up On power up the alarm message will not appear and the L2 LED and output will reflect a non alarm condition Silencing is active until the process has entered the safe region located between the low and high alarm settings Then deviation outside this safe zone triggers an alarm If an alarm occurs at this point the output can be silenced by pressing the Auto Man key once but the controller still displays the alarm message 7 4 WATLOW Series 988LF Users Manual Tuning Manual Operation Alarms and Error Codes Chapter 7 NOTE To view the error code press the Auto Man key once The upper display shows the error code for five seconds before returning to the CEE display Figure 7 5 Error Code Display NOTE An alarm display will be masked by an error condition or when the control is in the Calibra tion or Setup menus Tuning Manual Operation Alarms and Error Codes Chapter 7 Error Code E1 and E2 Messages Four dashes BERE in the upper display indicate a Series 988
40. ical radio frequency equipment Group 1 Class A EN 61000 3 2 1995 Limits for harmonic current emissions EN 61000 3 3 1995 Limitations of voltage fluctuations and flicker 73 23 EEC Low Voltage Directive 1993 Safety requirements for electrical equipment for measurement control and laboratory use Part 1 General requirements EN 61010 1 D clare que le produit suivant Francais D signation S rie 986 987 988 989 Num ro s de mod le s 98 6 7 8 ou 9 lettre quelconque 1 ou 2 0 1 2 3 4 ou 5 B C D E F ou K A B C D E F K ou T A B C J K M N ou T A B C D E K R S ou T deux lettres quelconques Classification Commande installation cat gorie Il degr de pollution II Tension nominale 100 240 V ou 24 28 V Fr quence nominale 50 60 Hz Consommation d alimentation nominale 16 VA maximum Conforme aux exigences de la ou des directive s suivantes de l Union Europ enne figurant aux sections correspondantes des normes et documents associ s ci dessous 89 336 EEC Directive de compatibilit lectromagn tique EN 50082 2 1995 Norme g n rique d insensibilit lectromagn tique Partie 2 Environnement industriel EN 61000 4 2 1995 D charge lectrostatique EN 61000 4 4 1995 Courants lectriques transitoires rapides EN 61000 4 3 1996 Insensibilit l nergie rayonn e EN 61000 4 6 1996 Insensibilit l nergie par conduction ENV 5020
41. inona Minnesota Appendix Warranty Returns Returns 1 Call Watlow Customer Service 507 454 5300 for a Return Material Authorization RMA number before returning any item for repair We need this information e Ship to address e Bill to address e Contact name e Phone number e Ship via e Your P O number e Symptoms and or special instructions Name and phone number of person returning the material NOTE All unit model number stemming from this user s manual end in INT which indicates a CE compliant product 2 Prior approval and an RMA number from the Customer Service Department is needed when returning any unused product for credit Make sure the RMA number is on the outside of the carton and on all paperwork returned Ship on a Freight Prepaid basis 3 After we receive your return we will examine it and determine the cause for your action 4 In cases of manufacturing defect we will enter a repair order replacement order or issue credit for material A 20 percent restocking charge is applied for all returned stock controls and accessories 5 If the unit is unrepairable it will be returned to you with a letter of explanation Repair costs will not exceed 50 percent of the original cost Shipping Claims When you receive your Watlow control examine the package for any signs of external damage it may have sustained enroute If there is apparent damage either outside the box or to
42. itioner All inputs included see Range Information 2 Input O None 2 Universal signal conditioner Remote Set Point 1 Output B Solid state relay Form A 0 5A with RC suppression C Switched dc or open collector isolated D Electromechanical relay Form C 5A with RC suppression E Electromechanical relay Form C 5A without RC suppression F Universal process 0 5V dc 1 5V dc 0 10 dc 0 20mA dc 4 20mA dc isolated K Solid state relay Form A 0 5A without RC suppression 2 Output A None B Solid state relay Form A 0 5A with RC suppression Electromechanical relays C Switched dc or open collector isolated warranted for 100 000 D Electromechanical relay Form C 5A with RC suppression closures only Solid state E Electromechanical relay Form C 5A without contact switching devices recom suppression mended for applications K Solid state relay Form A 0 5A without contact suppression requiring fast cycle times Display Overlay or extended service life GG Green Green display GR Green Red display RG Red Green display RR Red Red display NOTE User documentation may be available in French German Spanish Italian and Dutch as well as English Check Watlow s website www watlow com for availability Specify language at time of order Appendix WATLOW Series 988LF Users Manual A 7 Menu Overview Figure A 8 The Series 988LF Map NOTE This is a complete li
43. its final value within the number of scans that are set form A A single pole single throw relay that uses only the normally open NO and common contacts These contacts close when the relay coil is energized They open when power is removed from the coil form B A single pole single throw relay that uses only the normally closed NC and common contacts These contacts open when the relay coil is energized They close when power is removed from the coil form C A single pole double throw relay that uses the normally open NO normally closed NC and common contacts The operator can choose to wire for a Form A or Form B contact hunting Oscillation of process temperature between the set point and the process variable hysteresis A change in the process variable required to re energize the control or alarm output Sometimes called switching differential integral Control action that automatically eliminates offset or droop between set point and actual process temperature See reset automatic isolation Electrical separation of sensor from high voltage circuitry Allows use of grounded or ungrounded sensing element JIS j oint Industrial Standards A Japanese agency that establishes and maintains standards for equipment and components Also known as JISC Japanese Industrial Standards Committee its function is similar to Germany s Deutsche Industrial Norm DIN junction The point
44. key QB a disables the Mode key J and the Auto Man key 9A disables all keys This prompt always appears Default Em ED LoC a a Setup Menu Chapter 4 AM Caution Changing the value of changes most other prompts to the factory default values Verify the correct sensor type before making a change Failure to follow this guideline could result in damage to equipment or property Setup Menu Chapter 4 Select sensor input type This selection must match the sensor type connected to terminals 8 9 and 10 See Appendix for more information about sensors Input 1 e Changing the value of SEAE changes all other prompts to the factory default values Lock prompt and the prompt in the Setup Menu If you change the value the default warning FAHA will flash in the upper display e Changes do not take effect automatically after five seconds you must press the Mode key QJ to enter the selector type change and advance to the next prompt EEE This prompt always appears If Default a 98 L 1_ AA no DIP J K T N E W5 W3 Pt2 0 50mV Em Gn A O A EN AA CET thermocouple to Loto to to only 98 L 2 AA Input 1 DIP J K T N E W5 W3 Pt2 0 50mV thermocouple Ln A EA AAA BH O A E A M eee AES Input 1 DIP R S B thermocouple l ibl BOn Input 1 DIP RTD RTD 0 1 RTD 4 20mA 0 20mA 0 5V 1 5V 0 10V de 0 10 to to Int n o Nal 5 z ae A Mo y
45. n is changed ii WATLOW Series 988LF User s Manual Introduction Introduction Notes Cautions and Warnings We use note caution and warning symbols throughout this book to draw your attention to important operational and safety information A bold text NOTE marks a short message in the margin to alert you to an important detail A bold text CAUTION safety alert appears with information that is important for protecting your equipment and performance Be especially careful to read and follow all cautions that apply to your application A bold text WARNING safety alert appears with information that is important for protecting you others and equipment from damage Pay very close attention to all warnings that apply to your application The symbol an exclamation point in a triangle precedes a general CAUTION or WARNING statement The A symbol a lightening bolt in a triangle precedes an electric shock hazard CAUTION or WARNING safety statement Technical Assistance If you encounter a problem with your Watlow controller review all of your configuration information for each step of the setup to verify that your selections are consistent with your applications If the problem persists an Application Engineer can discuss your applica tion with you Before calling please have the complete model number and user s manual available You can get technical support by dialing 507 494 5656 7 a m to 7 p m
46. n the lower display Press and hold again until the prompt appears in the lower display O Use the Up arrow Y key to step from the Calibration Menu to the Diagnostics Menu ERLE Press the Mode key 3 to step through the prompts Ae a ee Eo UfElout EP O Press the Up arrow key Y or the Down arrow key EJ to select one of the prompt values In the Diagnostics Menu only the values of ERKA CAAA and HAHA can be changed Factory Menus Chapter 6 So Diagnostics Calibration Menu Menu p 6 1 p 6 5 ARE Factory Prompt Document your settings a from the controller s ita Factory Ship Date upper display WN JAR R E R a R A a a E A E e aE Software Revision aie Serial Number d i Ambient Temperature fai Ambient A D count Ground A D count Input 1 A D count Input 2 A D count inn ue Input 1 Module Type Pf Input 2 Module Type ir ue Output 1 Module Type PEF Output 2 Module Type i UN fad Test Display Ey Test Outputs c B 8 8 8 8 8 8 8 8 8 B 8 8 8 8 8 HEA Open Loop Figure 6 1 The Diagnostics Menu WATLOW Series 988LF Users Manual 6 1 Factory Diagnostics O ma r Un nm am rc TEE APT 6 Factory Ship Date Shows the date that the final factory control test was performed The first two digits represent the week as numbered from to GE The second two digits represent the year EJ HEEE etc
47. ning control A 3 Appendix Q R range high 1 4 4 4 5 range high 2 4 7 4 8 range low 1 4 4 4 5 range low 2 4 7 4 8 rate output 1 5 3 output 2 5 4 rate band A 3 reference junction A 2 relay mechanical 7 1 release tabs 1 1 2 2 remote set point 4 6 removing controller chassis 1 1 2 2 reset output 1 5 3 output 2 5 4 restore 6 5 retransmit A 3 RTD A 3 RTD calibration curve 4 5 RTD input 2 3 RTD wiring input 1 2 7 remote set point option 2 8 S safety practices 2 3 2 5 2 6 sensor installation 2 3 sensor type input 1 4 3 serial number 6 2 set point 2 5 2 setting DIP switches 1 1 1 3 input 1 2 lockout 1 3 Setup Menus 4 1 4 10 shipping claims A 1 silencing 4 10 silencing alarms 7 3 slidewire feedback A 3 software revision 6 2 specifications A 6 square root extraction linearization square root A 2 switched dc open collector wiring output 1 2 9 output 2 2 10 switching sensitivity A 3 T technical assistance iii 6 3 temperature limit control protection 2 5 terminal designation stickers 2 3 test displays 6 3 test output 6 4 thermal system A 3 thermocouple 2 3 A 3 thermocouple break protection A 3 thermocouple wiring input 1 2 7 remote set point option 2 8 three mode control A 3 time proportioning control A 3 tuning automatic 7 1 7 2 manual 7 2 Tuning of Industrial Control Systems 7 1 U Up arrow Key 3 1 upper display 3 1 using manual ii iii Appendix Index Prompt
48. ning temperature control featuring automatic manual capability with bumpless transfer In the Auto mode the control has closed loop control with sensory feedback while the Manual mode has open loop control with user defined output power level The 988LF accepts a wide range of thermocouple sensors along with RTD and process inputs The primary output is Heating or Cooling while the secondary output can be Heating Cooling or Alarm With the Series 988LF you can select either PID or ON OFF for output 1 or Output 2 You may input a complete set of PID parameters for both outputs or select automatic tuning for both heat and cool from the front panel This includes proportional band reset rate and cycle time By setting either output s proportional band to zero the Series 988LF becomes a simple ON OFF control with a 3 F or 1 7 C switching differen tial 0 3 F or 0 17 C for 0 1 RTD Operator friendly features include automatic LED indicators to aid in monitoring and setup as well as a calibration offset at the front panel The Watlow Series 988LF automatically stores all information in a non volatile memory WATLOW Series 988LF User s Manual i Introduction NOTE The 12 digit number is printed on the top of the stickers on each side of the controller s case and on the right hand or top circuit board NOTE The Menu Overview in the Appendix shows all of the menus and prompts Using this Manual This manual
49. o WATLOW Series 988LF Users Manual 4 3 Setup ci cri NOTE These values do not affect the low or the high set point limit for process alarms NOTE When high impedance is selected for Input 1 the range high for both and can be extended to EEEE The range low when is selected can be ex tended to Range Low and Range High continued on next page Range Low and Range High Select the low and high range for input 1 These prompts limit the adjustment range for the set points The default values are the same as the limits of the sensor you selected by setting the input DIP switch and selecting a value for Input MA e Process inputs are scaled by these values Range high is the value displayed when the maximum process signal is present at the input Range low is the value displayed when the minimum process signal is present at the input Example Set MES to mA Set to MIA Set to HERA A 4mA input will display MAA A 12mA input will display SEN A 20mA input will display SEHN The low and high values of each sensor type are listed on the specifica tions page of the Appendix e Choose between Fahrenheit and Celsius at the prompt in the Setup Menu These prompts always appear Default Default Default Default y y a 7 fe ED a gy a FS 3 S 3 ic es N E 98_L 1_ AA_ or cH 98_L 2_ AA_ K 300500 SEH HEED 300 HERA
50. olid state Relay without Contact Suppression 98 _L K_ AA 0 5 amps off state impedance 31MQ Figure 2 9 Switched DC Open Collector 19 to 32V VDC E VDC i AA 7900 12 i i 13 Minimum load resistance 5000 14 Internal Circuitry 98_L Cc TO External lo Load Figure 2 9c 0 20mA and 4 20mA Process 98_L F_ AA Maximum load impedance 8002 Figure 2 9d 0 5V 1 5V and 0 10V dc Process 98 _L F_ AA Minimum load impedance 1KQ WATLOW Series 988LF User s Manual 2 9 Output 2 Wiring NOTE Successful installa tion requires five steps Model number and software choice Appendix DIP switch set tings Chapter 1 e Sensor match Chapter 2 and Appendix Sensor installation Chapter 2 and e Wiring Chapter 2 2 10 WATLOW Series 988LF User s Manual Figure 2 102 AC Outputs Solid state Relay with Contact Suppression 98_L ___B AA__ l 0 5 amps minimum off state impedance 20KQ External Load Electromechanical Relay with Contact Suppression NO and COM contacts only 98_L ___D AA__ e ae Form C 5 amps minimum off state impedance 20KQ il ORD een Electromechanical Relay without Contact Suppression il 98_L ___E AA__ Form C 5 amps off state impedance 31MQ Solid state Relay without Contact Suppression 98_L ___K AA__ 0 5 amps off state impedance 31MQ Figure 2 10b Switched DC Op
51. ompt values Figure 5 1 Navigating the Operations Menu Operations Menu Chapter 5 g O To reach the Operation Menus begin in the Display Loop and press the Mode key Q Depending on the controller configuration either the Set Point 2 prompt BERE or the Proportional Band Output 1 prompt HEN will appear in the lower display You will not see every prompt in the Operation Menu the unit s configuration and model number determine which prompts appear Enter your settings from the controller s SA Set Point 2 upper display Proportional Band 1 MENA i Reset 1 DdD Rate 1 rr Cycle Time 1 Pb y Proportional Band 2 J HT Reset 2 Rate 2 ir rr Pu Cycle Time 2 Deadband Di ir O Alarm Lo 2 GEM Alarm Hi CA Calibration Offset EATS Auto tune 8 8 8 BBB 8 8 8 8 88 8 8 hi o O T ro 3 fe o D WATLOW Series 988LF Users Manual 5 1 NOTE Decimal points may not always be in the position specified below depending on the settings in the Decimal FER parameters in the Setup Menu 5 2 Display Prompts WATLOW Use the Mode key to advance through the Operations age Menu You will not see every prompt in the Operations menu the unit s configuration and model number determine which prompts appear O Use the Up arrow YY and Down arrow GJ 38 keys to change the
52. ontrol A method of controlling power by varying the on off duty cycle of an output This variance is proportional to the difference between the set point and the actual process temperature zero cross Action that provides output switching only at or near the zero voltage crossing points of the AC sine wave See burst fire zero switching See zero cross WATLOW Series 988LF Users Manual A 3 Index OUT LED 3 1 0 5V dc process wiring input 1 2 7 remote set point option 2 8 output 1 2 9 0 10V dc process wiring input 1 2 7 remote set point option 2 8 output 1 2 9 0 20mA process wiring input 1 2 7 remote set point option 2 8 output 1 2 9 0 50mV high impedance wiring input 1 2 7 remote set point option 2 8 1 5V dc process wiring input 1 2 7 remote set point option 2 8 output 1 2 9 4 20mA process wiring input 1 2 7 remote set point option 2 8 output 1 2 9 A access to panel back 2 2 AC output wiring output 1 2 9 output 2 2 10 alarm deviation 7 4 process 7 4 alarm display masked 7 5 alarm high 5 6 alarm low 5 6 alarms 7 4 7 5 alarms latching 7 4 alarms non latching 7 4 alarm silencing 7 4 ambient temperature 6 2 annunciator A 2 Auto Manual key 3 1 7 3 Auto Manual LED 3 1 7 3 auto manual operation 7 3 automatic operation 7 3 auto tune 5 7 auto tuning 7 1 brackets 2 1 2 2 bumpless transfer 7 3 C Calibration Menu 6 5 calibration offset A 2 cautions iii clearing error co
53. operation When the LED flashes press the key again within five seconds to complete the change in operation When a sensor opens the controller switches from automatic to manual operation e If the process has stabilized at a power level less than 75 5 for a two minute period prior to the sensor break then the Series 988LF switches to manual operation at the last automatic power level If these conditions are not met the output goes to 0 power output disabled When transferring from automatic to manual operation the control output or outputs remain stable a bumpless or smooth transition When transferring from automatic to manual operation the output value appears in the lower display In automatic operation the set point appears Tuning Manual Operation Alarms and Error Codes Chapter 7 WATLOW Series 988LF Users Manual 7 3 Alarms NOTE An alarm display will be masked by an error condition or when the control is in the Calibration or Setup menus Using Alarms Output 2 of the Series 988LF can function as an alarm This is accom plished with the prompt Setup Menu If is selected the output is energized in the non alarm condition and de energizes the output in the alarm condition Selecting reverses this action de energizing the output in a non alarm condition and energizing it in an alarm condition If the L2 LED on the front panel is lit this indicates an alarm condition for output 2 Once you
54. overshoot on startup or after the set point changes for Output 1 The rate setting will not influence the percent power if the process value is more than twice the proportional band from the set point This prompt appears only if is set to greater than MA Default Cycle Time Output 1 Select the time in seconds of a complete on off cycle This prompt appears only if is set to greater than MA This prompt does not appear if Output 1 is a process output If Default y y mechanical oie EEEE min relay Ce outputs open collector ss EEEE min or solid state Ce Ce Ce relay outputs WATLOW Series 988LF Users Manual 5 3 Operations pP b Pad Proportional Band Output 2 Select the proportional band for PID output 2 If set to MA it functions as an on off control If set to MW it functions as an on off control with a 3 F or 1 7 C switching differential for ranges displayed in whole degrees and 0 3 F or 0 17 C for ranges displayed on 0 1 The default is 25 F 17 C This prompt appears if Output 2 Setup Menu is set to or Mara If Default y y a EEEE Setup Menu aa es GEE Input 1 EA Pho Pb Setup Menu lO ah CEE Pho Setup Menu aa a ME GEE Input 1 Phe Setup Menu r Pad Reset Output 2 Tune the control action to eliminate the offset or droop between the set point and the actual process value for PID output 2 This prompt appears only if is set to greater than MA Defaul
55. process inputs can be extended 0 20 EEEE MEEE units to EEEE EERI EEE EEEF units EF EEFE units CEN CEEE MEEE units EF EEEE units 0400 EEE EEEE units Celsius Fahrenheit Select which temperature scale the controller will use This prompt appears only on controllers with either Input 1 set to something other than a process input Default CF 4 8 WATLOW Series 988LF Users Manual Setup Menu Chapter 4 Setup Menu Chapter 4 Output 1 Set the way that output 1 will respond to a difference between the set point and an input variable EEH ceat select reverse action so that output 1 responds when the input signal is less than the setpoint WCoo select direct action so that output 1 responds when the input signal is more than the setpoint This prompt always appears Default y Process 1 Select the process range for output 1 This prompt appears only on controllers equipped with output 1 process hardware 98__ _ F_ __ Default y 4 20mA 0 20mA 0 5V 1 5V 0 10V dc 0 5 BO En Output 2 Selects the secondary output action de energizes output 2 in an alarm condition energizes output 2 in an alarm condition EEH ceat selects reverse action so that output 2 responds when the input signal is less than the set point WCoo selects direct action so that output 2 responds when the input signal is more than the set point This prompt appears only on controllers equipped with outpu
56. provides the information you will need to install and operate a Series 988LF controller If you need information about Series 988LF configurations and model numbers refer to the Appendix of this manual This manual explains the five steps of setting up a Series 988LF con troller 1 Set and document all of the DIP switches if applicable Chapter 1 2 Mount the controller Chapter 2 3 Wire and document the controller wiring Chapter 2 4 Configure and document the controller software Chapters 3 6 5 Run test and adjust your application Update documentation The Appendix provides definitions and specifications along with application examples to help you optimize the safety and perfor mance of your application Use the Table of Contents and Index to find specific information Document Every Step The Series 988LF provides powerful control features Carefully document each step of the setup and any subsequent changes This will make it much easier to change adjust and troubleshoot your application Make the configuration documentation available to engineers and techni cians on all shifts who may need to work with the Series 988LF We pro vide space in this manual to record configurations You may prefer to photocopy the blank forms and keep them in a separate binder However you maintain your documentation be sure to replace all old copies of the documentation with updated versions whenever the controller configura tio
57. rmocouple input set to mV Default Remote Set Point Input Enable a remote set point signal The remote set point input selection switches are set to process at the factory This prompt appears only on controllers equipped with Remote Set Point Input hardware 98 _ L _ 2__ AA_ If Default y y RSP Input DIP J K T N E W W5 Pt2 0 50mV S Ln Lg thermocouple RSP Input DIP R S B ot 2 al 64 T E thermocouple RSP Input DIP RTD RTD 0 1 22 BES RTD 4 6 WATLOW Series 988LF Users Manual Setup Menu Chapter 4 O If Default i Remote Set Point Input continued from previous RSP Input DIP 4 20mA O 20mA 0 5V 1 5V 0 10V VDC page EB ED SEE SP process Factory Preset RSP Input DIP 4 20mA 0 20mA 0 5V 1 5V 0 10V VDC SN Bab PSP ASP mV process Range Low 2 and Range High 2 if ce U H Select the low and high range for Remote Set Point Input These prompts limit the adjustment range for the set points The default values are the same as the limits of the sensor you selected by setting the input 2 DIP switch and selecting a value for Input 2 ME These prompts appear only on controllers equipped with Remote Set Point Input hardware 98 _ L _2__ AA_ e Process inputs are scaled by these values Range high is the value displayed when the maximum process signal is present at the input Range low is the value displayed when the minimum process signal is presen
58. rocess 1 Output 2 Alarm Type Latching 4B 8 BBB B 8 B BB 8 B88 8 gt Silencing Setup Menu Chapter 4 WATLOW Series 988LF Users Manual 4 1 NOTE Decimal points may not always be in the position specified depending on the settings in the Decimal parameters in the Setup Menu A Caution Setting to or disables the Auto Man key and will force the controller into manual mode if an open sensor occurs Verify that the controller is operating in the desired mode auto or manual before setting the lockout level Failure to do so could result in damage to equipment and or property 4 2 WATLOW Series 988LF Users Manual Setup Prompts C WATLOW PROCESS Use the Mode key 3 to advance through the Setup Menu You will not see every prompt in the Setup menu the unit s configuration and model number determine which prompts appear e e Li L2 Dre DISPLAY OUT cy HAN A gt ay l SERIES 988LF Use the Up arrow YY and Down arrow GQ keys to change the prompt setting To move backwards through the menu hold the Mode key 53 down and press the Up arrow key 239 Refer to the Appendix for model number options C WATLOW PROCESS ee L1 L2 DEV OUT e SERIES 988LF Front Panel Lockout Sets the lockout level for the front panel This allows you to disable keys on the front of the controller NIH enables all keys disables the Mode
59. ry or death Figure 2 3 Power wiring A CAUTION The Series 988LF will not function with two grounded thermocouple inputs Avoid using a grounded thermo couple for both input 1 and input 2 Failure to follow this guideline could result in damage to equipment Installation and Wiring Chapter 2 Wiring the Series 988LF Wiring options depend on the model number and DIP switch settings Check the terminal designation stickers on either side of the controller and compare your model number to those shown here and with the model number breakdown on the inside back cover of this manual Input to output Isolation The Series 988LF uses optical isolation between the analog inputs and the controller outputs This isolation provides a 500V ac barrier to prevent ground loops when using grounded sensors and or peripheral equipment Here is a breakdown of the isolation barriers e Analog inputs 1 and 2 are grouped together e Outputs 1 and 2 are grouped together Power Wiring 100 to 240 V ac nominal 85 to 264 actual 98 8L AA L AA Vertical Package Horizontal Package 98 Ico 24 to 28 Vx ac dc nominal 20 to 30 actual 98 6L AA L AA Vertical Package Horizontal Package 98 INI Sensor Installation Guidelines Thermocouple input Extension wire for thermocouples must be of the same alloy as the thermocouple itself to limit errors Using grounded thermocouples for both inpu
60. s V WwW AE Factory Menues 6 1 warnings iii y l TI warranty A 1 wiring 2 1 2 3 2 10 a I input 1 2 7 input 1 4 3 input 2 2 8 input 1 module type 6 3 output 1 2 9 input 2 module type 6 3 output 2 2 10 wiring example 2 5 wiring safety 2 3 2 5 2 6 J j K L latching 4 10 Ha front panel lockout 4 2 X Y Z front panel lockout FE zero switching A 3 3 local remote 5 7 Ambient A D count 6 2 aaa e 5 6 proportional band output 1 5 2 alarm low 5 6 GEF proportional band output 2 5 4 alarm type 4 10 GIRAS ambient temperature 6 2 auto tune 5 7 B PAE bumpless transfer 7 3 7 5 C Celsius_Fahrenheit 4 8 calibration offset 5 7 M N O open loop 6 4 7 6 Prompt Index output 1 4 9 output 2 4 9 GE error 7 5 output 1 module type 6 3 output 2 module type 6 3 da P Pbi O 5 rate output 1 5 3 rate output 2 5 4 E reset output 1 Pid A 5 3 reset output 2 PID A 5 4 range high 1 4 4 4 5 range high 2 4 7 4 8 Vn Bs Rs Cup range low 1 4 4 4 5 range low 2 4 7 4 8 remote set point 4 6 4 7 IH RERE REREN O 00 a ee e E a ono ES FIG Calibration Menu 6 5 3 restore 6 5 cycle time output 1 5 3 EF RTD calibration curve 4 5 cycle time output 2 5 5 D S silencing 4 10 FERIA factory ship date 6 2 serial number 6 2 GREE dead band 5 5 EMT software revision 6 2 decimal 4 6 set
61. s error exceeds the hysteresis open loop A control system with no sensory feedback output Control signal action in response to the difference between set point and process variable overshoot The amount by which a process variable exceeds the set point before it stabilizes P control Proportioning control PD control Proportioning control with derivative rate action PDR control Proportional derivative control with manual reset used in fast responding systems where the reset causes instabilities With PDR control an operator can enter a manual reset value that eliminates droop in the system PI control Proportioning control with integral automatic reset action PID Proportional integral derivative A control mode with three functions proportional action dampens the system response integral corrects for droop and derivative prevents overshoot and undershoot process variable The parameter that is controlled or measured Typical examples are temperature relative humid ity pressure flow fluid level events etc The high process variable is the highest value of the process range expressed in engineering units The low process variable is the lowest value of the process range proportional band PB A range in which the proportioning function of the control is active Expressed in units degrees or percent of span See PID proportional control A control using only th
62. sting of all Series 988LF prompts Not all prompts will appear on your control They are dependent on your configuration and model number To Navigate Press to return to the Display Loop from any location and to advance through the Display Loop Press F9 or GJ to move between the menus Press to advance through a menu Hold while pressing to move backwards through the menus Press F9 or GJ to select prompt values Display Loop Press E to exit gt i z H AAA Lower Display any menu and e A A LE h reach the Display Set point DEVLEDon OUTLEDon Process units i or Remote Loop at any time set point Operation Factory Menus Press ES to advance to the Operation Menu Operation Set point 2 Proportional band 1 Reset 1 Cycle time 1 Proportional band 2 Cycle time 2 Deadband Setup Menu Press Y and for 3 seconds to enter the Setup Menu Setup Lock Input 1 Range low 1 Range high 1 RTD calibration curve Decimal Remote set point Range low 2 Range high 2 CorF 3 seconds to enter the Factory Menus i Diagnostics Factory ship date Software revision A 8 WATLOW Series 988LF Users Manual qu INCL A50 A00 Alarm type Output 1 Output 2 Latching Silencing At the Setup Menu press YY and Y another Calibration o N o Serial number Ambient temperature AOH Ambient A D co
63. t y Wa EEEE repeats min E c A Pad Rate Output 2 Tune the rate to eliminate overshoot on startup or after the set point changes for Output 2 The rate setting will not influence the percent power if the process value is more than twice the proportional band from the set point This prompt appears only if is set to greater than MA Default y En EEE min rA Ag 5 4 WATLOW Series 988LF Users Manual Operations Menu Chapter 5 Cycle Time Output 2 Select the time in seconds of a complete on off cycle This prompt appears if Output 2 Setup Menu is set to or MAA and if is set to greater than MA If y mechanical relay outputs Default Sn EEEE min open collector or solid state relay outputs mz EEEE min CEO Dead Band Q or Select the width of the zone between the action of the heating reverse acting output and the cooling direct acting output This shifts the cool setpoint by the dead band value entered If you select a positive value the heat and cool outputs cannot be energized at the same time If you select a negative value both outputs can be energized at the same time Default y a process input is selected Operations Menu Chapter 5 WATLOW Series 988LF Users Manual 5 5 Operations ALG 5 6 WATLOW Series 988LF Users Manual Alarm Lo Select the low trigger value for the output 2 alarm Represents the low process alarm or low deviation alarm
64. t 1 and remote set point option may create ground loop problems To correct this problem replace at least one of the grounded thermocouples with an ungrounded thermo couple If the application requires grounded thermocouples use an isolat ed transmitter such as a Watlow Gordon 5702 isolated transmitter RTD input Each 1Q of lead wire resistance can cause a 2 F error when using a two wire RTD A three wire RTD sensor overcomes this problem All three wires must have the same electrical resistance i e same gauge same length multi stranded or solid same metal Process input Maintain isolation between input 1 and input 2 to prevent a ground loop A ground loop may cause incorrect readings dashes across the upper display or the display of error codes WATLOW Series 988LF User s Manual 2 3 Figure 2 4 Process wiring example Wiring 0 20 and 4 20mA Process Inputs Certain transmitters used in process input applications are producing internal resistor failures in the Watlow Series 988 family of controllers This is only apparent with the Series 988 family 1 8 DIN units with Process Inputs selected 0 20mA or 4 20mA dc only We are noticing that an external resistor is required to prevent a high in rush current which burns out the Series 988 family controllers 7 ohm internal resistor This high in rush current occurs initially on power up If the transmitter turns full on for a split second during power up the av
65. t 2 hardware not 98_L __ A AA Default WA HEN E EEN EETA ME A EA m rr ra WATLOW Series 988LF Users Manual 4 9 Setup ALE G iL Alarm Type Selects the alarm type when Output 2 has been selected as an alarm uses the process signal from input 1 uses a deviation from the input 1 signal This prompt appears only on controllers equipped with output 2 hardware not 98_L __A AA_ and with set to or BEIA Default y Latching Select whether alarm for output 2 will be latching or non latching A latching alarm must be turned off manually A non latching alarm turns off when an alarm condition no longer exists This prompt appears only on controllers equipped with output 2 hardware not 98 _L __A AA and with set to or HE Default y Silencing Select silencing to inhibit alarm for Output 2 on startup and to allow the operator to reset the alarm output not the visual display e Silencing disables the alarm until the signal is between ERA and ME This prompt appears only on controllers equipped with output 2 hardware not 98_L ___A AA__ and with set to or MI Default y 4 10 WATLOW Series 988LF Users Manual Setup Menu Chapter 4 Chapter 5 The Operation Menu Navigating the Operation Menus ZS WATLOW EPET NOTE Press the Display Key to return to the Display Loop from any point in any menu SERIES 988LF U O Use the Up arrow Y or the Down arrow 4 key to select one of the pr
66. t at the input Example Set to FREI A Set to Minh Set to nh A 4mA input will display MA A 12mA input will display MERA A 20mA input will display MEAR e The low and high values of each sensor type are listed on the specifica tions page of the Appendix e Choose between Fahrenheit and Celsius at the prompt in the Setup Menu These prompts appear only if the controller is equipped with Remote Set Point Input hardware and with Remote Set Point Input not set to META Default DefaultDefault Default Range Low 2 and Range y y 4 y High 2 continued on next page HEA EHHA E EEG 98_L 1_ AA_ or 98_L 2_ AA_ Setup Menu Chapter 4 WATLOW Series 988LF Users Manual 4 7 Setup Default Default Default cl l l i y cH Range Low 2 and Range 4 High 2 continued from CEFE ER GH HEM previous page SERE MEJO TN EEE NOTE A MER CERA MI HERO These valusa O not EEE HER EIN 195 affect the low or the high set point limit for W5 process alarms EEA CEN E EEG W3 NOTE When high impedance high impedance is selected for 0 50 EEEF EEEF GERF ERE Input 1 the range high for both and MER Een EEEN HFA 98_L 2_ AA_ only can be extended to EEEE The range EEA EEN E EETA low when is selected can be ma EEA EEr EER EHA extendedto EEEF EF 14 1c 200 500 EEEE EEEE CEE EEN NOTE process The range high EEEE MEEE units value for
67. the proper equipment called for in each procedure The Series 988LF is calibrated and tested before it leaves the factory Attempting to calibrate the controller without the proper equipment could result in damage to property and or equipment Factory Calibration _ EPREJ Diagnostics Prompt Document your seti oor a from the controller gt Ge upper display pan 00 gt is soo A be gt E coe gt ua gt EFE a ol gt gt EME o a gt a a 5 Ea gt Gn none EA gt Gan none gt cos gt E cp gt Ga mone gt o gt gt EE a co gt fam gt E CD QU gt ERA b 100 gt Gan mone a gt gt ERE a oo A gt E gt FE rone gt i o gt EE get N Restore Figure 6 5 The Calibration Menu Restore Restores the original factory calibration values This is a simple way to recover from a mistake made while calibrating the controller This prompt always appears Default no c5 Factory Menus Chapter 6 WATLOW Series 988LF Users Manual 6 5 Notes 6 6 WATLOW Series 988LF Users Manual Factory Menus Chapter 6 Chapter 7 Tuning Manual Operation NOTE A useful reference on tuning is Tuning of Industrial Control Systems by Armando B Corripio published by the Instrument Society of America Figure 7 1 Auto tuning example A CAUTION
68. unt A20 Ground A D count A15 Input 1 A D count Input 2 A D count Input 1 module Input 2 module Output 1 module A4A Output 2 module A QU Test displays A100 Test output Open loop Restore aes Appendix Declaration of Conformity Series 986 987 988 989 C 96 WATLOW CONTROLS 1241 Bundy Boulevard Winona Minnesota 55987 USA Declares that the following product English Designation Series 986 987 988 989 Model Number s 9 8 6 7 8 or 9 Any letter 1 or 2 0 1 2 3 4 or 5 BC DEFork ABCDEFKorT ABCJKM Nor T ABC D E K R S or T Any two letters Control Installation Category Il Polution Degree II Rated Voltage 100 to 240V or 24 to 28V Rated Frequency 50 60 Hz Rated Power Consumption 16VA maximum Meets the essential requirements of the following European Union Directive s using the relevant section s of the normalized standards and related documents shown Classification 89 336 EEC Electromagnetic Compatibility Directive EN 50082 2 1995 EMC Generic immunity standard Part 2 Industrial environment EN 61000 4 2 1995 Electrostatic discharge EN 61000 4 4 1995 Electical fast transients EN 61000 4 3 1996 Radiated immunity EN 61000 4 6 1996 Conducted immunity ENV 50204 1995 Cellular phone EN 50081 2 1994 EMC Generic emission standard Part 2 Industrial environment EN 55011 1991 Limits and methods of measurement of radio disturbance characteristics of industrial scientific and med
69. ut to output isolation 2 3 installation 2 1 2 2 integral A 2 isolation 2 3 A 2 J JIS A 2 junctions A 2 A 4 WATLOW Series 988LF Users Manual K keys 3 1 L L1 output 1 3 1 L2 output 2 3 1 latching alarm 7 3 linearization A 2 local remote 5 7 locating DIP switches 1 1 1 3 Lockout 4 2 lockout DIP switch 1 3 lockout level setting 4 2 lower display 3 1 M maintaining documentation ii 6 3 manual operation 7 2 manual tuning 7 2 mechanical relay 7 1 menu lockout 4 2 Mode Key 3 1 module types 6 3 mounting 2 1 2 2 National Electric Code NEC 2 3 2 5 2 6 NEMA 4X seal 2 2 A 2 non latching alarm 7 4 notes iii O on off control A 2 Operation Menu 5 1 5 7 open loop 6 4 A 2 ordering information A 7 output A 2 output 1 4 9 output 1 wiring 2 9 0 5V dc process 2 9 0 10V dc process 2 9 O 20mA process 2 9 1 5V dc process 2 9 4 20mA process 2 9 AC outputs 2 9 switched dc open collector 2 9 output 2 4 9 output 2 wiring 2 10 AC outputs 2 10 switched dc open collector 2 10 output configurations output 1 control 3 1 output 2 control or alarm 3 1 output module types 6 3 overriding alarms 7 4 overshoot A 3 P P control A 3 panel back access 2 2 panel cutouts 2 1 2 2 Panel Lockout Menu 4 2 PD control A 3 PDR control A 3 PI control A 3 PID control A 3 power wiring 2 3 process variable A 3 process alarm 7 4 proportional band A 3 output 1 5 2 proportio
70. values based on the 80 minute tuning cycle performed To start auto tuning 1 Press the Mode key J to advance through the Operations menu until the prompt appears in the lower display 2 Use the Up arrow YY or Down arrow Q2 key to select MAA or PIFF 3 Press the Display key FB While the control is in the tuning mode the lower display alternates every second between the normal information and the prompt WATLOW Series 988LF Users Manual 7 1 4 When tuning is complete the displays return to their previous state and reverts to MEA The Series 988LF installs the PID tuning parameters it has calculated and saves them in non volatile memory To abort auto tuning either reset the prompt to off press the Auto Man key twice or cycle power off and on In all cases aborting auto tune restores all values to their state before auto tuning began Manual Tuning For optimum control performance tune the Series 988LF to your thermal system The tuning settings here are for a broad spectrum of applications your system may have somewhat different requirements NOTE This is a slow procedure that may take hours to obtain optimum values NOTE Tune heating outputs at a set point above the ambient process value Tune cooling outputs at a set point below the ambient process value 1 Apply power to the Series 988LF and enter a set point Begin with GES set to MMMM GTS or BETS set to MV GE or set to MAA set to SW set to MN and
71. ve configured as an alarm select the prompt At this prompt you can select the type of alarm process or deviation A process alarm sets an absolute temperature range or process value range When the temperature or process leaves the range an alarm occurs A process alarm is not tied to the set point Example If your set point is 100 F and a process alarm high limit is set to 150 F and the low limit is set to 50 F the high limit trips at 150 F and the low alarm at 50 F If you change the set point the process alarm limits remain the same A deviation alarm alerts the operator when the process strays too far from the set point The operator can enter independent high and low alarm settings The reference for the deviation alarm is the set point Any change in set point causes a corresponding shift in the deviation alarm Low alarms are usually set at a negative deviation while high alarms are a positive deviation Example If your set point is 100 F a deviation alarm high limit is set to 7 F and the low limit is set to 5 F then the high alarm trips at 107 F and the low alarm at 95 F If you change the set point to 130 F the alarms follow the set point and trip at 137 F and 125 F Alarms can be latching or non latching When the alarm condition is removed a non latching alarm automatically clears the alarm output and alarm message if one is present You must manually clear a latching alarm before it will disappear T
72. versal process These prompts always appear Outputs 1 and 2 Module Types Displays which output module is installed in the controller Please document this value before contacting the factory for technical assistance Output Types no output module 0 5A solid state relay s 0 5A solid state relay with suppression switched DC output s form C relay with suppression process output Output 1 only GEM GELE These prompts always appear Test Displays Runs a brief test of the controller s displays and LEDs To run the test scroll through the Diagnostics Menu until is shown in the lower display Use the Up arrow key 249 or Down arrow key to select from the upper display and press the mode key QB The controller will run pattern tests blink all the LEDs on and off and end with the model number in both displays This prompt always appears Default y YES EE WATLOW Series 988LF Users Manual 6 3 Factory Diagnostics D O u C O GPLP Test Outputs This prompt tests each output To run the test scroll through the Diagnostics Menu until tout is shown in the lower display Use the Up arrow key 249 or Down arrow key to select an output or CER The LED for that output should light after a second or two indicat ing that the output has been successfully energized Do not press the mode key J to activate the test it starts automatically when anything other than is selected If any of the LEDs f
73. where two dissimilar metal conductors join to form a thermocouple cold junction Connection point between thermo couple metals and the electronic instrument See reference junction grounded junction Type of thermocouple probe in which the hot or measuring junction is an integral part of the sheath material No electrical isolation is provided isolated junction A form of thermocouple probe construction in which the measuring junction is fully enclosed in a protective sheath and electrically isolated from it Commonly called an ungrounded junction reference junction The junction in a thermo couple circuit held at a stable known temperature cold junction Standard reference temperature is 32 F 0 C thermocouple junction The point where the two dissimilar metal conductors join In a typical thermocouple circuit there is a measuring junction and a reference junc tion See reference junction ungrounded junction See isolated junction linearization square root The extraction of a linear signal from a nonlinear signal corresponding to the measured flow from a flow transmitter Also called square root extraction Appendix NEMA 4X A NEMA specification for determining resistance to moisture infiltration This rating certifies the controller as washable and corrosion resistant on off A method of control that turns the output full on until set point is reached and then off until the proces

988LF Manual - Zesta Engineering Ltd.

Contents

Download Pdf Manuals

Related Search

Related Contents