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1. module 46727 Field Terminals Module Functions Devices Z Signal Conditioning Channel 1 Multiplexer Analog to Micro i Digital Processor Converter to from Signal Open BIU Conditioning Thermocouple Fault Channel 8 Calibration The module automatically performs A D calibration at powerup Automatic calibration is then repeated every minute to compensate for changes in the ambient temperature New calibration values are filtered into the current calibration values Analog Input Module Thermocouple Input Module Host Interface The Thermocouple Input module uses the following data types m 8 words of analog input data 3 GFK 1290D May 1997 m 8 words of analog output data This data is written to the module by the Bus Interface Unit BIU It contains the Reference Junction Compensation value which is a 16 bit temperature value in degrees C Use of this data is optional it is needed only when Remote Compensation is configured for one or more channels on the module m 48 bits of discrete inputs for module and channel status data use of this data is optional m 16 bits of discrete outputs for fault clearing commands to the module also optional The module exchanges data with a Bus Interface Unit in the same manner as other types of I O modules it provides all its input data and status bits when requested by2. Module Operation The Thermocouple Input Module accepts eight inputs from thermocouples and converts the input level of each to a digital value The module support a variety of thermocouple types as listed in the Module Specifications section Each input can be configured to report data as millivolt or temperature tenths of degrees Celsius or Fahrenheit measurements When thermocouples are measured the module can be configured to monitor the thermocouple junction temperature and correct the input value for cold junction On command from the module s internal microprocessor the solid state optically coupled multiplexer circuitry provides the present analog value of a specified input to the analog to digital converter The converter turns the analog voltage into a binary 15 bits plus a sign bit value representing tenths 1 10 of degrees Celsius or Fahrenheit The result is read by the module s microprocessor The microprocessor determines if the input is over or under its configured range or if an open thermocouple condition exists When the module is configured to measure millivolts instead of inputs from thermocouples the result of the analog to digital conversion is a value reported in hundredths 1 100 of millivolts A Bus Interface Module handles the exchange of all I O data for the modules in the I O Station over the communications bus The illustration below represents the main functional operations of the Thermocouple
3. Circuit Diagnostics Bits byte 2 4 3 2 1 0 Circuit Diagnostics Bits byte 4 4 3 2 1 0 High alarm TC 2 Low alarm TC 3 High alarm TC 3 Low alarm TC 4 High alarm TC 4 Input underrange TC 1 Input overrange TC 1 Input underrange TC 2 Input overrange TC 2 Input underrange TC 3 Input overrange TC 3 Input underrange TC 4 Input overrange TC 4 Open circuit TC 1 Open circuit TC 2 Open circuit TC 3 Open circuit TC 4 Open circuit TC 5 Open circuit TC 6 Open circuit TC 7 Open circuit TC 8 Circuit Diagnostics Bits byte 3 0 Circuit Diagnostics Bits byte 5 0 Low alarm TC 6 High alarm TC 6 Low alarm TC 7 High alarm TC 7 Low alarm TC 8 High alarm TC 8 Input underrange TC 5 Input overrange TC 5 Input underrange TC 6 Input overrange TC 6 Input underrange TC 7 Input overrange TC 7 Input underrange TC 8 Input overrange TC 8 Thermistor error Spare Analog Input Module 11 Thermocouple Input Module GFK 1290D May 1997 Clearing Faults and Alarms The host can use a set of 16 discrete output bits in the BIU s discrete output Q table to clear and inhibit faults and alarms for the Thermocouple Inpu
4. Thermistor gt Loro uil Ie rt r J Connect 2 2 E amp thermocouples ole 11 S here E5 Module 2 l Connect 2 Ho E Ns thermocouples olo gt here Connect Thermistor gt Lo a 7 2 a Connect tle a thermocouples o U2 eae here Q z aa o e IC670CHS004 IC670CHS003 or 103 The Thermocouple Terminal Block must be used with a grounded conductive DIN rail to assure that the assembly screws in the terminal block base cover are connected to chassis ground Connecting Thermocouples to a Thermocouple Terminal Block For each module the connector pin assignments on terminal block IC670CHS004 with the base mounted in the position shown above are Q pa 3 s Input 7 46729 Input6 12 o Input gt Input 6 gt Input 5 Thermistor po an Input 5 wae 2 s O Input3 Roa 2 o Input 3 ie 5 o Input nput 2 Q Input 1 Analog Input Module 9 Thermocouple Input Module GFK 1290D May 1997 Connecting a Thermocouple Terminal Block to the I O Terminal Block Connect a Thermocouple Terminal Block IC670CHS004 to the I O Terminal block IC670CHS003 using an appropriate cable The diagram below shows the pin assignments for each Wire to Board connector on the Thermocouple Terminal Block IC670CHS004 Input 6 Input 5 Input 5 Input 6 Input 4 In
5. The module will also accept configuration data from the bus when used in a system that supports such configuration The table below summarizes configuration choices and defaults The module will power up with the default configuration settings These defaults may be changed as appropriate for the application For configuration instructions refer to the Bus Interface Unit User s Manual Module Description Default Choices Parameter AnalogInput Word length of the module s analog input data in the BIU s 8 1to8 Data Length analog input AI table AnalogInput Starting offset for the module s analog input data in the BIU s userselectable Data Reference analog input AI table Analog Output Word length of the module s optional Reference 8 Oor8 Data Length Compensation data in the BIU s analog output AQ table Analog Output Starting offset for the module s optional Reference userselectable Data Reference Compensation data in the BIU s analog output AQ table Discrete Input Bit length of the module s optional status data in the BIU s 48 0 or 48 Data Length discrete input I data table Discrete Input Starting offset for the module s optional status data in the userselectable Data Reference BIU s discrete input I data table Discrete Output Bit length of the module s optional fault clearing commands 16 Oor 16 Data Length in the BIU s discrete ou
6. insulation barrel or wire barrel Insert stripped wire into contact until it is butted against wire stop as shown Holding wire in place squeeze tool handles together until ratchet releases Check the contact s crimp height as described in the tool instruction sheet Adjust the crimp height if necessary before continuing rT gt Strip Length Locator PEN coe Wire Stop Slot to Stop Contact typ 46721 10 Analog Input Module GFK 1290D Thermocouple Input Module May 1997 Diagnostics The Thermocouple module performs diagnostics and provides the diagnostic data to the Bus Interface Unit s discrete input I table The module sets the appropriate bit when a diagnostic condition is detected The bit remains set until it is cleared Alarm bits are set if the processed value for a channel exceeds its configured alarm limit Overrange bits are set if the millivolt value for an input exceeds the limits of its span Open circuit is checked every time a thermocouple input is read unless Open TC checking is disabled If the circuit is open the corresponding bit is set and the input is not processed further Circuit Diagnostics Bits byte 0 Circuit Diagnostics Bits byte 1 716 5 4 3 2 1 0 71 6 5 4 3 2 1 0 L Low alarm TC 1 L__ Low alarm TC 5 L_______ High alarm TC 1 L Highalarm TC 5 Low alarm TC 2
7. I O Terminal Block on which the module is installed to achieve local cold junction compensation the thermistor must be electronically identical to the thermistor in the Thermocouple Terminal Block The Terminal Block with box terminals has 25 terminals for each module Each terminal accommodates one AWG 14 avg 2 1mm cross section to AWG 22 avg 0 36mm cross section wire or two wires up to AWG 18 avg 0 86mm cross section When an external jumper is used wire capacity is reduced from AWG 14 210mm to AWG 16 1 32mm7 TheI O Terminal Block with barrier terminals has 18 terminals per module Each terminal can accommodate one or two wires up to AWG 14 avg 2 1mm cross section TheI O Terminal Block with Connectors has one 20 pin male connector per module I O Terminal Block with I O Terminal Block with I O Terminal Block with Wire to Box Terminals Barrier Terminals Board Connectors IC670CHS002 and 102 IC670CHS001 and 101 IC670CHS003 and 103 Input 8 16 as 2 15 Input 7 meu 143 Input 7 Input 8 181 57 input 7 Input 5 Input 6 routs ma Input 5 impure al input 7 Input 6 Inputs Input 6 110 Input 6 12 Input 7 Input 4 9 Input 5 41 Input 5 care Nee Inout FO meuts O not ey Inpu
8. alance Commonmodevoltage 250 Vrms 350 VDC or peak AC Maximum voltage between channels 250 VAC Isolation User input to logic user input to frame ground Channel to Channel 1500 VAC for 1 minute 250 VAC continuous 250 VAC continuous Current drawn from BIU power supply 195mA maximum Normal mode voltage 100 overrange DC or peak ACoperational 28 VDC or peak ACmaximum Scan time 60 Hz approximately 60 milliseconds per point 50 Hz approximately 70 milliseconds per point Faultdetection Open Thermocouple over underrange andhigh lowalarm Keying Locations Optional keying locations for the Thermocouple module are KeyingLocations C D E F G H J K va rile Analog Input Module 7 Thermocouple Input Module GFK 1290D May 1997 Installation Instructions Thermocouples can be wired directly to the I O Terminal Block on which the Thermocouple module is installed or wired to an optional Thermocouple Terminal Block IC670CHS004 If a Thermocouple Terminal Block is used installing the Thermocouple Module itself on an 1 OTerminal Block with Wire to Board Connectors provides the simplest connection between terminal blocks However the module can be installed on any Field ControlI O Terminal Block Terminal assignments for each type of Field ControlI O Terminal Block are shown below Note that if a thermistor is connected locally to the
9. llivolt ranges 19 5mV 39mV 78 125mV 156 25mV 312 5mV and 625mV All but the last provide input readings in hundredths of millivolts For the 625mV range inputs are in tenths of millivolts 6 Analog Input Module GFK 1290D Thermocouple Input Module May 1997 Module Specifications Module Characteristics Number of Channels 8 Each channelis individually configurable Thermocoupletypes J K T E SR B N G C D Platinel II Spans 19 5mV39mV 78 125mV 156 25mV 312 5mV 625mV Converterresolution 15 bits sign Coldjunction compensation If used reference junction temperature either measured at thermo couple termination using a precision thermistor or supplied by sys tem or by fixed configurationvalue Cold junction temperature error 0 25 degree Celsius local measurement To reduce temperature transients thermocouple terminations should not be installed in the same cabinetas high heat dissipation assemblies Conformity error 0 3 degree Celsius 0 5 degree Fahrenheit Operating temperature range 0 to 55 degrees Celsius ambient Accuracy at 25 C on voltage measurement 0 1 of reading 0 05 of span for J K T and E thermocou ple types Temperature sensitivity 0 to 60C 0 004 of reading 1 5uV per Celsius referred to input Normal mode rejection 60dB at50 60Hz 100 span Common mode rejection 120dBat50 60Hz 100 ohmimb
10. mpensation The Thermocouple module provides four methods of Cold Junction Compensation m No Cold Junction Compensation This is used for millivolt inputs or if cold junction is maintained at 0 degrees C m Remote Cold Junction Compensation With this option cold junction is measured externally and provided to the module by the BIU using its AQ output references If the module has multiple thermocouples that are configured for remote compensation the same compensation value must be used by each m Fixed Cold Junction Compensation This option uses a fixed compensation value which is provided as part of the module configuration m Local Cold Junction Compensation The best way to provide local compensation is with a Thermocouple Terminal Block IC670CHS004 which has two built in thermistors It shields thermocouple connections from module heat If local compensation is selected and a Thermocouple Terminal Block is not used separate thermistors must be installed directly at the I O Terminal Block using the Thermistor and Thermistor terminals The thermistor must be Beta THERM part 8 5K3A4 or equivalent from BetaTHERM Corp 910 Turnpike Rd Shrewsbury MA 01545 ph 508 842 0516 FAX 508 842 0748 Note If local compensation is selected but a Thermocouple Terminal Block or local thermistors are not used erroneous temperatures may be reported Range Selection The module can be configured for any of six different mi
11. put 7 Input 3 Input 8 Input 4 Input 7 Input 3 Input 8 Input 2 Thermistor Input 1 Thermistor Input 2 Thermistor Input 1 Thermistor 46744 Using a Crimping Tool Pins catalog number IC670ACC003 must be installed on individual wires using a crimping tool The AMP Pro Crimper II Hand Tool Assembly 90546 1 is recommended The tool must be properly adjusted as detailed in the instructions that come with the tool 1 2 Strip the wire 3 96 to 4 75mm 0 156 to 0 187in taking care not to nick or cut wire strands Hold the tool with the back wire side facing you Squeeze tool handles together and allow them to open fully Holding the contact by the mating end insert the contact insulation barrel first through the front of the tool into the appropriate crimp section Position the contact with the mating end on the locator side of the tool so that the open U of the wire and insulation barrels face the top of the tool Place the contact up into the nest so that the movable locator drops into the slot in the contact Butt the front end of the wire barrel against the movable locator NOTE Be sure both sides of the insulation barrel are started evenly into the crimping section DO NOT attempt to crimp an improperly positioned contact Hold the contact in position and squeeze the tool handles together until ratchet engages enough to hold the contact in position DO NOT deform
12. rsion Type in degrees has beenconfigured Analog Input Module 5 Thermocouple Input Module GFK 1290D May 1997 Module Features Channel Active Each channel can be configured as either active or inactive If a channel is inactive it is still sampled from the A D The filtering scaling calibration and alarm checks are omitted for that channel and a value of 0 is returned to the BIU The reference parameter for the analog input data returns the byte length and is independent of the number of active channels If a channel is active and the configured analog input data length is not long enough to accommodate the data for a particular channel the data for that channel is still processed since the response to a group command may be used to transmit that channel s data to the BIU Low Alarm Limit and High Alarm Limit Each input channel can have a low alarm limit and a high alarm limit If an input reaches one of its limits the module reports the actual value and sends the appropriate diagnostic bit in the BIU s discrete input I table Alarms do not stop the process or change the value of the input Alarm limits can be set anywhere over the dynamic range of the signal The range for each is 32 768 to 32 767 The high alarm limit must be greater than the low alarm limit If alarm reporting is not wanted alarm limits can be set beyond the dynamic range of the signal so they will never be activated Cold Junction Co
13. t 4 e7 Input 3 Input 4 8 oe P Input 7 Input 4 common Led nean Input 3 P 7 Input 3 Input 8 Input 3 Input 2 4 Input 4 6 eee p i Input2 H2131 Input 1 Pee Fite npu Thermistor nput 2 common i E Input 1 nput 2 3 Input 4 Thermistor Input 1 Thermistor EEY common Input 2 2 Thermistor Input 2 i eva Thermistor 1 Input 1 Thermistor HREM E Thermistor tt Thermistor BI All Thermistor Thermistor Input 1 Terminals E1 E2 E4 E6 and E8 are E electrically connected together A1 and A2 are electrically connected together B1 and B2 are electrically connected together 46743 8 GFK 1290D May 1997 Analog Input Module Thermocouple Input Module Using an Optional Thermocouple Terminal Block The Thermocouple Terminal Block IC670CHS004 which has two built in thermistors can be used to provide local reference junction compensation The Thermocouple Terminal Block is installed in the same manner as other Field Control I O Terminal Blocks Q Q Module 1 S le G Connect T 7 Ls thermocouples A A a s here oll 2 C a onnect Pay
14. t module Setting the appropriate bit from the host clears all diagnostic bits for that thermocouple that may be set The discrete input bits for a channel remain clear in the BIU as long as the corresponding discrete output bit is set Output Command Bits to Clear Diagnostics byte 0 7 6 5 4 3 2 1 0 i Clear Inhibit All Faults on Thermocouple 1 Clear lInhibit All Faults on Thermocouple 2 Clear Inhibit All Faults on Thermocouple 3 Clear Inhibit All Faults on Thermocouple 4 Clear Inhibit All Faults on Thermocouple 5 Clear Inhibit All Faults on Thermocouple 6 Clear Inhibit All Faults on Thermocouple 7 Clear Inhibit All Faults on Thermocouple 8 Output Command Bits to Clear Diagnostics byte 1 7 6 5 4 3 2 1 0 L Clear Errors for Thermistor A thermistor error occurs if the calculated temperature value from the thermistor is less than 10 degrees C or greater than 75 degrees C
15. the BIU and receives fault clearing commands from the BIU via its assigned output bits Note that the BIU can be configured not to send status data over the network The module can also be configured for Group data transfer with the BIU or with other intelligent devices in the same Field Control station Group data transfer and the steps for configuring it are described in the Bus Interface Unit User s Manual Compatibility This module must be used with a Bus Interface Unit revision 2 0 or later Thermocouple Limits The table below lists millivolt and temperature limits for applicable thermocouple types TC Type Low mV Limit High mV Limit Low Temperature High Temperature Limit C Limit C J 8 0960 57 9420 210 00 1000 00 K 5 8910 54 8069 200 00 1370 00 T 5 6030 20 2520 200 00 390 00 E 8 8240 76 3580 200 00 1000 00 S 0 1940 18 5040 40 00 1750 00 R 0 1880 20 8780 40 00 1750 00 B 0 03300 13 8140 100 00 1820 00 N 0 57480 47 5019 22 222 1300 00 G 0 00600 38 5639 4 444 2315 55 C 0 23400 37 0660 17 7777 2315 55 D 0 16300 39 5060 17 7777 2315 55 Platinel II 0 0000 52 25 0 00 1300 00 4 Analog Input Module GFK 1290D Thermocouple Input Module May 1997 Module Configuration Overview Like other Field Control modules the Thermocouple Input module is usually configured from the Bus Interface Unit using a compatible hand held programmer
16. tput Q table Discrete Output Starting offset for the module s optional fault clearing userselectable Data Reference commands in the BIU s discrete output Q table Line Frequency Specifies the line frequency The module uses this data to 60 Hz 50 Hz 60 Hz control the sampling rate Suppress Open Determines whether or not the module will suppress Open No Yes No Thermocouple Thermocouple diagnostics on the input data Channel Active Specifies if the channel should return data and alarms If a Active Inactive off channel is inactive space is still allocated for it Active on Engineering Specifies how the module will report input values Millivolts Millivolts 1 10degrees C Units 1 10degreesF Thermocouple The type of thermocouple present on each channel None None J K TE S R B N G Type C D Platinel II Range For millivolt inputs only the range for each channel in 625 19 53 39 06 78 125 156 25 millivolts 312 5 625 RJ Type Specifies how or whether the channel will perform Cold Local Local Remote Fixed None Junctioncompensation Alarm Low The low alarm limit for the channel in engineering units 200 32 768 to 32 767 Alam High The high alarm limit for the channel in engineering units 800 32 768 to 32 767 Reference Specifies a reference value if Fixed RJ Type has been 0 Junction Value configured Offset Specifies optional amount to be added to compensated and 0 linearized input value when a Conve
17. y QUALI IROL This Datasheet for the IC670ALG630 Thermocouple Input 8 Channel http www qualitrol com shop p 14497 ic670alg630 aspx Provides the wiring diagrams and installation guidelines for this GE Field Control module For further information please contact Qualitrol Technical Support at 1 800 784 9385 support qualitrol com GFK 1290D May 1997 Analog Input Module IC670ALG630 Thermocouple Input Module The Thermocouple Analog Input Module IC670ALG630 accepts 8 independent thermocouple or millivolt inputs Module features include Self calibration Two data acquisition rates based on 50 Hz and 60 Hz line frequencies Individual channel configuration Configurable high alarm and low alarm levels Reports open thermocouple and out of range alarms Each input channel can be configured to report m millivolts ranges as 1 100 of millivolts OR thermocouples as linearized temperature in tenths of degrees Celsius or Fahrenheit with or without cold junction compensation 46726 ISOLATED THERMOCOUPLE x e INPUT O 625 mV MAX 0 N a u D w N H XVI AU G29 INdNI m IIdNODONYIHL aalv10SI Power Sources This module does not require a separate power supply to operate LED A single indicator shows module status ON normal operation Intermittent flashing module fault OFF no backplane power 2 Analog Input Module GFK 1290D Thermocouple Input Module May 1997
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