PCM400A User`s Manual
Contents
1. 3 20 DO 4 21 DO S 22 DO 6 23 DO 7 24 DO 8 25 DI 1 26 DI 2 27 DI 3 28 DI 4 29 DI 5 30 DI 6 31 DI 7 32 DI 8 33 RET 34 RET 35 RET 36 GREEN WIRE GND J1 CPU Board connection J2 RLY80 RLY180 connection 10 Installation Scaling Analog Inputs When scaling a sensor the minimum maximum scaling values must be calculated The minimum and maximum scaling values entered into the Analog Input Definition represents the values that are represented when 0 volts and 5 volts respectively are measured at the analog input terminal The simplest method to calculate the proper scaling values for typical sensors are shown below in several examples Example 1 A 4 20ma liquid level sensor is to be scaled The sensor operates over a range of 0 to 15 feet of liquid where 4ma 0 feet and 20ma 15 feet The simplest way to scale a 4 20ma sensor is to take the range of the sensor divide it by 4 then subtract the result from the 4ma sensor value V4 level value at 4ma sensor output V20 level value at 20 ma sensor output Minimum Scale Value V4 V20 V4 4 0 15 0 4 3 75 feet Maximum Scale Value V20 15 0 feet Example 2 A 0 5VDC voltage type liquid level sensor is to be scaled The sensor operates over a range of 0 to 15 feet where 0 7 volts 0 feet and 4 2 volts 15 feet Note that voltage sensors are not neatly calibrated at the factory for standard voltage values T2. 6 n u 7 RTS 8 CTS 9 n u J5 Serial Port 1 MODEM RJ11 Telephone Connector 1 n u 2 n u 3 TIP 4 RING 5 n u 6 n u Jumpers used to configure the CPU Board for hardware related features JU1 Install to enable the battery support for the memory Remove for shipment JU2 thru JU7 Factory configured DO NOT CHANGE JU8 2 pos jumper for Serial Port 2 configuration A RS232 B RS422 JU9 2 pos jumper for ART A 5vdc or Thermistor B 20ma JU10 2 pos jumper for Al 2 B 20ma A 5vdc or Thermistor JU11 2 pos jumper for Al 3 B 20ma A 5vdc or Thermistor JU12 2 pos jumper for Al 4 B 20ma A 5vdc or Thermistor JU13 2 pos jumper for Al 5 B 20ma A 5vdc or Thermistor JU 14 2 pos jumper for Al 6 B 20ma A 5vdc or Thermistor JUISA future JUISB future JU15C Install for use with RLY 180 relay board remove for RLY80 or none T O Board TB1 power input terminal strip 1 24VDC regulated main input terminal 2 DC RET return for power supply 3 DC RET return for power supply TB2 I O Terminations I Al 1 2 Al 2 3 IRET 4 Alt3 5 Al 4 6 IRET 7 ATHS 8 Al 6 9 IRET 10 Thermistor 5VDC power supply 11 Thermistor 5VDC power supply 12 AO 1 4 20ma Output 13 12VDC sensor power 50 ma max 14 12VDC sensor power 50 ma max 15 24VDC power switched 0 25A max 16 24VDC power switched 0 25A max 17 DO 1 18 DO 2 19 DO
3. accept another call immediately The PCM400A may optionally be equipped with an on board high speed 14400 or 28800 Baud MODEM If one of these high speed MODEM s are installed the Host Baud rate may be different that the Analog Baud rate transmitted over the phone lines These MODEMs work exactly like the external MODEMS such as the PPI models we use on many products and the cautionary notes above regarding the on board 2400 Baud MODEM s do not apply To connect ISAC s Handheld Terminal device to the PCM400A s TB1 CPU Board a special cable is needed This cable may be obtained from ISAC but the cable connections are described below for reference Handheld Term RIIT PCM400A CPU TB1 1 6 Nm BW NWN ABN We The Handheld terminal has five programmable function keys that should if not already done at the ISAC factory be programmed to give the functions necessary to control the Handhelds cursor and screen funtions These keys may be programmed by pressing the CTRL SHIFT and F2 keys together and then selecting the key to program and changing the code that the key code that will sent when the key is pressed by the user The terminal function keys should be set for Handheld Term F key Hex Code Fl 1B Escape key code F2 1A Page Down key code F3 17 Page Up key code F4 1B Escape key code F5 09 Tab key code 14 Service For service contact ISAC Inc through the following routes Integrated Systems and Control Inc
4. value parameter Simple user logons via MODEM or local terminal are no longer saved in the Alarm Log but are now saved in the Activity Log The Alarm Log now has a DIF formatted report that may be retrieved by IWATCH The Activity Log now also has a value column that will be increasingly used in the future The Activity log report has been redesigned in both the ASCII and DIF formats In addition when retrieving the logs you have 3 choices First you may retrieve the activity for any single point without any other general activity that is not directly related to the specified point Secondly if you specify a point of 0 zero you will get a report of activity for all points without any other general activity that is not point related Lastly specifying a point of 999 will retrieve only General activity items such as user logons via Modem or other DI activity etc The logs may only be cleared in three circumstances First you may clear the logs manually by invoking a menu selection or by an Abbreviated Command Secondly if the software detects a flaw that really will prevent the logs from being used added to and displayed the log will be cleared and the Alarm Log will receive an entry reflecting a Log Corrupt condition Furthermore if a corruption occurs due to a memory failure noise induced processor malfunction or other hardware problem will be detected if possible and an Alarm Log entry be made A Corruption detect
5. I SAC INTEGRATED SYSTEMS AND CONTROL INC User Manual PCM400A INTEGRATED SYSTEMS AND CONTROLS INC PCM400A Users Manual Integrated Systems and Control Inc PO Box 7682 Auburn CA 95604 Phone 530 878 9038 Fax 530 878 9137 Revised 3 28 2001 Table of Contents General Specifications Installation Operation Service Ww OOo fk W General To bring the advantages of the PCM1600 technology to smaller systems we have developed the PCM400A system The PCM400A shares the programming logging and communications features of the PCM1600 with a lower I O count and a built in low cost Modem The PCM400A product is a two board set It is comprised of a CPU Board that contains the microprocessor and memory and virtually all the necessary electronic parts The second board is the I O Board that contains the screw terminals required to connect almost all the field wiring to the board set The two boards are designed to be placed next to one another and be connected to each other via a 50 conductor ribbon cable Alternately the two boards may be placed apart by up to 36 inches to facilitate packaging flexibility BUT care must be taken to keep the path of the cable away from electrically noisy equipment The I O Board contains a 20 pin ribbon cable connector that is designed to drive the outputs only of either a RLY80 or RLY 180 relay board We believe that the PCM400A is a product that provides the best combination of soft
6. O to a load devise connect the ACHT terminal I O board TB2 12 to the load transducer s positive signal terminal and connect RET I O board TB2 32 to the load transducer s negative signal terminal Current will flow out of the PCM400A s AO terminal through the load transducer input and then back to the PCM400A s RET Serial Port 1 MODEM The PCM400A CPU Board can be equipped with an on board MODEM option Connection to the phone line are made by J5 a standard RJ11 phone connector MODEM specifications will vary depending on the particular component option selected An optional version of the PCM400A will omit the built in modem and supply a RS232 port connector J4 for connection to a external Modem or other device Serial Port 2 RS232 RS422 RS485 The PCM400A CPU Board contains a multipurpose serial port that can be reconfigured by software and hardware jumper settings to be used as a service laptop computer interface port a full time RS422 IWATCH ILISTEN monitoring port or a RS422 Handheld Terminal port The CPU Board contains a DB9 connector J3 used when a RS232 interface is required and a terminal strip TB1 used when a RS422 interface is required Jumper JU8 is used to further set the hardware configuration to use this serial port When JU8 is in the A position the J3 RS232 connector is enabled When JU8 is in the B position the TB1 RS422 connector is enabled When the J3 connector is used to conne
7. PO 7682 Auburn CA 95604 Ph 530 878 9038 Fax 530 878 9137 Email deshane isacinc com 15
8. ct a laptop computer to the PCM400A set JU8 to position A and plug a Null Modem cable between the PCM400A and the laptop computer When the TB1 connector is used to connect the Handheld Terminal remove all connections from the J3 connector set JU8 to the B position and reset the PCM400A to detect the Handheld Terminal When the TB1 connector is used to connect a full time IWATCH ILISTEN equiped computer to the PCM400A JU8 should be set to B and a DB9 female connector with pins 7 and 8 shorted together should be plugged into the otherwise unused J3 connector to select a computer type interface Installation PCMA400A Summary of Connections The terminal strips of the PCM400A board set are mainly located on the I O Board Connections for serial port MODEM and the expansion connector for the use of the Expansion Analog Input Board are located on the CPU Board for electronic reasons The following tables define the function of each of the PCM400A s connections CPU Board TB1 Serial Port 2 RS422 1 Tx 2 Tx 3 Rx 4 Rx 5 COM 6 Svdc J1 I O Board connections J2 Analog Expansion for AIf9 to AT 16 J3 Serial Port f1 RS232 1 CD 2 RX DATA 3 TX DATA 4 DTR 5 COM 6 n u 7 RTS 8 CTS this input must be asserted to select the computer interface protocol 9 n u J4 OPTIONAL USE ONLY Serial Port 1 RS232 1 CD 2 RX DATA 3 TX DATA 4 DTR 5 COM
9. ed on the fly will cause an Alarm Log entry but the log will not be cleared automatically but left to the user to clear manually Thirdly loading new programming via MODEM or via load from backup will only result in clearing the log if the definition being loaded changes the size of the log or if the operand types included in the log columns changes adds a column or deletes a column The User Log s and the Maintenance Log may now be loaded similarly to loading the programs This may be done by using IWATCH v2 50A or higher ILISTEN v1 00B or higher We have also developed a Windows 95 utility program named TLogEdit exe that will convert User log and Maintenance log files to and from TriNet format and Excel format files so that the logs may be edited This ability is designed to allow the restoring of a User Log maybe only one of 32 possible logs after a program upgrade so that a table of values can be maintained or some previous history data restored when a failure has occurred Requesting a User Log XMODEM DIF report of a User Log will result in a file with the correct header named by default as UG DIF The default Maintenance Log DIF report file is named MG DIF Note that these log files do not contain the log definitions but only the data from the log so that a complete restoration requires that the correct UL DIF as well as the correct UG DIF files be loaded in that order See further information regarding the loading of log fi
10. he calculations required are as follows M slope of voltage vs depth in volts per feet or inches or whatever Vdry voltage output of the sensor when removed from the liquid Vx voltage at some known depth Dx Dx some known depth at which Vx can be recorded usually sensor maximum Minimum Scale Value the minimum value to enter into TRINET s definition Maximum Scale Value the maximum value to enter into TRINET s definition M Vx Vdry Dx 4 2 0 7 15 0 23 Maximum Scale Value 5 0 Vdry M 5 0 0 7 0 23 18 7 feet Minimum Scale Value Vdry M 0 7 0 23 3 0 feet 11 Operation PCM400A Operation and Programming The idea behind the PCM400A design is to combine the programming features of the SAC160 PCM1600 Masters with reduce hardware and more flexible packaging The following paragraphs describe the main differences between the SAC160 PCM1600 programming and the PCM400A s Programming considerations of the PCM400A compared to the PCM1600 The firmware revision of the PCM400A is currently V4 16x The development of programs must be done with the appropriate v4 16x Simulator software Programs written for the PCM1600 or the MSTxxx series TriNet s WILL NOT directly load into a PCM400A board or Simulator program without significant changes Six 6 Analog Inputs are available on the basic board set AI 1 thru ATH6 AT is used internally to monitor the Svdc power supply ATHS is used inter
11. ld sensors there are two analog inputs that are used internally to monitor power supply voltages Two Analog Inputs are reserved for measuring the system power supplies AI 7 measures the 5 vdc supply voltage and AI 8 measures the 24 vdc supply voltage The CPU Board is equipped with a 10 pin ribbon connector that allows the connection of one Expansion Analog Input Board to allow the addition of 8 more analog inputs AH thru Al 16 Therefore the maximum number of field accessible analog inputs with an expansion board is 6 8 14 field useable analog inputs Digital Inputs The basic board set has 8 digital inputs DI 1 thru DI 8 which are self powered from the 24VDC power such that only a contact closure is required to activate them Screw terminals on the I O Board are provided for connections Internally these inputs may be defined for use as general purpose inputs status inputs intended to trigger alarms if the corresponding digital output does not switch or as a timed latching input useful in logic rules to provide temporary user overrides When a RLY80 or RLY 180 relay boards are attached to the PCM400A the digital status inputs of the relay board are IGNORED All the field digital input devices must be terminated on the I O Board There is currently no way to expand the number of digital inputs Digital Outputs The basic board set has 8 solid state sinking 24VDC digital outputs terminated on the I O Board DO 1 thru DO 8 Each output is ca
12. les in the documentation for IWATCH and ILISTEN The PCM400A may optionally be equipped with an on board 2400 Baud MODEM The 2400 baud MODEM does NOT have the ability to have different analog Baud rates and Host Baud rates like the PPI external modems we use on many of our systems This means that if the Serial Port Baud rate is set at 2400 the MODEM must only be called by a computer that has it s MODEM Baud rate set at 2400 or higher If a calling computer has it s port set at 1200 Baud the PCM will answer and lock tones at 1200 but since the hardware Host Baud rate internal to the PCM is set at 2400 Baud a speed mismatch will result in garbage being sent and 13 received You may set your computer to a baud rate above 2400 and logon successfully because the calling MODEM will discover that the PCM can link at no higher than 2400 and will step down to that speed I have noticed that sometimes if the phone line is cut by the caller just hanging up without doing the C hang up process for the PCM that the MODEM may not drop the line until the PCM discovers that no activity has occurred for 10 minutes and forces the MODEM to drop the line This must be a shortcoming with the MODEM where a loss of carrier is not always detected properly or the time limit on the carrier dropping is set at the factory to a large value Only experience will determine whether this is a problem If one always does the C hang up command the PCM is ready to
13. nally to monitor the 24vdc power supply ATHS thru AI 16 may be defined when the Expansion Analog Input Board is installed If the Analog Input Expansion Board is installed it must be mounted close lt 10 inches to the CPU Board There are 8 definable Digital Inputs DI 1 thru DI 8 in the PCM400A The action and programming options of the Digital Inputs are compatible with the PCM1600 The input terminals located on either the RLY 180 or RLY80 boards are not used and are IGNORED by the PCM400A All DI s must be terminated at the I O Board The single Analog Output is definable as in the PCM1600 with the option provided for AO 1 of either true analog or PWM Unlike the PCM1600 the PCM400A DOES NOT support the use of a UMX 8 output multiplexer board attached to the Analog Output Digital Outputs DO 1 thru DO 18 are definable in the PCM400A If the RLY180 board is attached all the DO s are available at the terminal strips of the RLY180 Otherwise only DO 1 thru DO 8 are useable and are available at the I O Board s terminals or the RLY80 s terminals if used The Alarm and Activity logs have been redesigned from those of the PCM1600 s The new Alarm Log now includes a value parameter that is used to store the value of a failed device that caused the alarm to be recorded For instance when an Analog Input exceeds it s 12 programmed alarm limits the value that exists at the time the log entry is opened is stored in the
14. pable of sinking switching to RET a load device that requires 100ma or less A typical load would be an interface relay with a 24VDC coil or another logic board that may use a pulse width modulation signal to control air pressure etc By programming the PCM400A any or all of the 8 DO s may be used for PWM If a RLY80 or RLY180 relay output board is attached to the connector provided on the I O Board the digital output terminals of the PCM400A s I O Board will be redirected to operate the relays of the RLY80 or RLY 180 and should not be used When a RLY 180 is connected to the PCM400A CPU Board jumper JUI5C must have a shunt installed to inform the software that this special board is present This jumper must be removed when no relay board is attached or when the RLY80 relay board is used Using the RLY180 relay board the PCM400A can drive a maximum of 18 digital relay outputs Analog Outputs The PCM400A provides one 1 true analog output AO 1 which produces a self powered 0 20ma or 4 20ma signal for driving field mounted transducers transmitters To use the AO program the PCM400A s ACHT and specify that the output should use a true analog output rather than a PWM pulse width modulation type Screw terminals are provided for connections on the I O Board Calibration adjustments are provided on the I O Board consult factory instructions before making any adjustments on the analog output Zero and Span adjust screws To connect the A
15. ware functionality packaging flexibility short development cycle and low cost r i J Kg ES 0 gt 4 ag DI a he 1 PCM400A CPU Board OLJ pak ev PN met V acti Ai ef DS Je Snir ACE BD el Cl r gheet SE wll Hr P k C Eer eerie Ta EVT ETTVEETE PE OL EOE OE OOO COE AAMO GMA SG IA AON 99D 9D PCM400A I O Board Specifications CPU Board Size Height 5 0 Width 8 8 and Depth 1 0 T O Board Size Height 2 2 Width 8 8 and Depth 1 0 Input Power 24VDC 0 2 at 1 0 Amps including 1 RLY180 The input power is fused at 1 25 Amps and there a power switch on the I O Board to switch the main input power The field terminals for connection of power are on the I O Board TB1 Output Power Terminals are provided on the I O Board for providing power for external sensors and output relays A 12vdc terminal is available for external use of less than 50 milliamperes of current A 24vdc terminal is available for powering external output relays when neither of the RLY relay boards is required This 24vdc output is limited to a maximum current of 25 amperes Analog Inputs The basic board set has terminals for 6 analog inputs which may be used as either 0 SVDC 0 20ma 4 20ma or 10K Thermistor temperature A board jumper may be used to connect the input to a 250 Ohm 1 resistor for 0 20ma or 4 20ma inputs In addition to the 6 analog inputs available for fie
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