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1. AnalogInput Starting offset for the module s analog input userselectable Data Reference data in the BIU s analog input AI table Discrete Input Bit length for the module s optional status 32 0 32 Data Length data in the BIU s discrete input I table Discrete Input Starting offset for the module s status data userselectable Data Reference in the BIU s discrete input I table Discrete Bit length for the module s optional 8 0 8 Output Data fault clearing bits in the BIU s discrete Length output Q table Discete Output Starting offset for the module s optional userselectable DataReference fault clearing bits in the BIU s discete outputtable AnalogOutput Word length for analog output data in the 0 0 4 Data Length BIU s analog output AQ table Should not be used for most applications AnalogOutput Starting offset for the module s analog userselectable Data Reference output data in the BIU s AQ table Line Frequency Specifies the line frequency 60 Hz 50 Hz 60 Hz Channel Active Specifies if the channel should return data Active Inactive off Active on and alarms If a channel is inactive space is still allocated for it Units The conversion type for each RTD Deg C tenths of ohms tenths of degrees C or tenths of degrees F RTD Type The type of RTD used for each channel 100 PT 10 PT 25 PT 25 5 PT 392 100 PT 385 100 PT 385 3902 100 PT 392 100 PT 3923 100 PT 3916 1K PT 375 10 CU 102. 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 UnitsSelected IntegerRanges EngineeringUnits Ranges Tenths of Degrees 32767 to 32767 3276 7 to 3276 7 Tenths of Ohms 0 to 65535 0 Ohms to 6553 5 Ohms Compatibility This module must be used with a Bus Interface Unit revision 2 0 or later 4 Analog Input Module GFK 1206D RTD Input Module June 1997 Module Configuration Overview Like other Field Control modules the RTD Input module is usually configured from the Bus Interface Unit using a compatible hand held programmer 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 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 4 0 4 Data Length data in the BIU s analog input AI data table
3. 1997 Field Wiring The following illustration shows connections for 3 wire and 4 wire RTDs Required for AN 4 Wire RTD Calibration if no Corresponding Seen RTD is Installed Terminals a Source 0O Source Source 7 8 15 16 aie In s In 4 Qin 5 61314 Lor In gt pf In In 3 4 11 12 2 Return mO Return Return 1 2 9 10 46724 No loop power is required for this module The excitation current for the RTDs is provided by the module which automatically matches the excitation current to each configured RTD type I O Terminal Block Terminal Assignments The Terminal Block with box terminals IC670CHS002 has 25 terminals for each module Each 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 IC670CHS001 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 IC670CHS003 has one 20 pin male connector per module I O Terminal Block with I O Terminal Block with I O Terminal Block with Wire Box Terminals Barrier Terminals to Board Connectors IC670CHS002 and 102 IC670CHSO001 and 101 IC670CHSO003 and 103 Source 4 16 as 15 Source 3 Source 4 lt gt iota L In 3 iia 16 7 75 S
4. 5V itati 5 V 5V lt lt P by DC DC Regulator 6 5V 5 y Signal A Conditioning and Multiplexer Logic Micro processor Opto n 2 Serial Bus A D 2 5V Reference 46723 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 The module stores the calibration constants for each gain in RAM memory This data can be read and changed if necessary Analog Input Module 3 RTD Input Module GFK 1206D June 1997 Host Interface The RTD Input module has the following data types m 4analog inputs 4 words m 32 bits of discrete input data for module and channel status use of this data is optional m 8bits of discrete output data for fault clearing to the module also optional m Analog output data defaults to a length of 0 and should NOT be used for most applications A starting reference and length in the Bus Interface Unit BIU data tables for each data type is selected during module configuration Depending on the configuration that has been set up for each RTD the input data can be reported as tenths of ohms tenths of degrees Fahrenheit or tenths of degrees Celsius This module exchanges data with a BIU in the same manner as other types of I O modules it provides all its input data and status bits when requested by the BIU and
5. CU 427 50 CU 427 100 CU 427 100 NI 100 NI 618 120 NI 672 604 NI FE518 1K NI FE527 500Ohm 3000 Ohm Wire Type The type of field wiring for each RTD 3 Wire 3 Wire 4 Wire Alarm Low The low alarm limit for the channel in 200 32 768 to 32 767 engineering units Alam High The high alarm limit for the channel in 800 32 768 to 32 767 engineering units Resistance An optional resistance adjustment in tenths 0 0 to 3276 7 of ohms Analog Input Module RTD Input Module Module Features Channel Active Each channel can be configured as either active or inactive 5 GFK 1206D June 1997 If a channel is inactive it is not scanned and a value of 0 is returned to the BIU 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 discrete input table of the BIU 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 mus
6. T UALITROL L NTERNATIONAL This Datasheet for the IC670ALG620 RTD 4 Channel Isolated 3 or 4 Wire Input http www qualitrol com shop p 14496 ic670alg620 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 1206D June 1997 Analog Input Module IC670ALG620 RTD Input Module The RTD Analog Input Module IC670ALG620 accepts inputs from 4 independent 3 wire and or 4 wire platinum nickel nickel iron or copper RTDs Module features include m Selectable resistance measurements in tenths of ohms tenths of degrees Fahrenheit or tenths of degrees Celsius m Individual channel configuration m Selectable resistance ranges 0 500 ohms and 0 3000 ohms m Selectable RTD input as resistance or temperature Celsius or Fahrenheit m Reportshigh low underrange overange open wire and input short alarms m Uses optional discrete inputs and outputs for status and control Two data acquisition rates based on 50 Hz and 60 Hz line frequencies m Configurable channel activation 46722 ISOLATED x o RTD INPUT md 3000 Q MAX O el A w N m XV 3 0008 1NdNI ALH aaLvi0si Power Sources No loop power is required for this module The excitation current for the RTDs is provided by the module which automatically match
7. es the excitation current to each configured RTD type LED A single indicator shows module status m ON normal operation m Intermittent flashing module fault m OFF loss of backplane power or fatal fault 2 Analog Input Module Se RTD Input Module une Module Operation The RTD Input Module accepts four inputs from three wire or four wire RTDs and converts the input level to a digital value Input spans support a variety of RTD types as listed in the Module Specifications section The analog digital converter reads the voltage generated by each of the four inputs The A D converter converts the differential measurement into a binary value 15 bits plus sign which is read by the block s microprocessor The microprocessor sets the gain required in the analog digital converter for each individual input The gain is based on the RTD type that has been configured for that input The microprocessor selects the input by means of a solid state optically coupled multiplexer Three measurements are made for each input Excitation current RTD resistance including field wire drop and field wire drop From these three measurements the module calculates the RTD resistance A DC DC converter circuit isolates the field side from the logic circuits 2
8. larm for RTD 1 L________ Open Wire RTD 2 Low alarm for RTD 2 L Qpen Wire RTD 3 High alarm for RTD 2 L Open Wire RTD 4 Low alarm for RTD 3 L Shorted input RTD 1 High alarm for RTD 3 Shorted input RTD 2 Low alarm for RTD 4 Shorted input RTD 3 High alarm for RTD 4 Shorted input RTD 4 Circuit Diagnostics Bits byte 1 Circuit Diagnostics Bits byte 3 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 L Input underrange RTD 1 Wiring error RTD 1 ______ Input overrange RTD 1 Wiring error RTD 2 Input underrange RTD 2 Wiring error RTD 3 Input overrange RTD 2 i Wiring error RTD 4 Input underrange RTD 3 mi pae Input overrange RTD 3 spare Input underrange RTD 4 spare Input overrange RTD 4 spare Clearing Faults and Alarms Four optional discrete output bits in the BIU s discrete output Q table can be used to clear module faults and alarms Setting the discrete output bit for an RTD clears all diagnostic bits for that RTD that may be set Output Command Bits to Clear Diagnostics 7 6 5 4 3 2 1 0 __ Clear All Faults on RTD 1 L Clear All Faults on RTD 2 Clear All Faults on RTD 3 Clear All Faults on RTD 4 not used not used not used not used
9. m Normal mode rejection 60dB at50 60Hz 100 span Common mode rejection 120dBat50 60Hz 100 ohmimbalance Commonmodevoltage 250 Vrms 350 VDC or peak AC Normal mode voltage 100 overrange DC or peak ACoperational 28 VDC or peak ACmaximum 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 190mA maximum DigitalResolution 15 bits plus sign Operating temperature range 0 to 55 Degrees C ambient Channel Characteristics RTD types 10 25 100 and 1000 ohm platinum 10 and 100 ohm copper 100 50 and 120 ohm nickel 604 ohms and 1000 ohms nickel iron Resistanceranges 0 to 500 ohms 0 to 3000 ohms Accuracy at 25 C RTD 0 15 of reading 0 3 to 0 5 degree Celsius depending on type Temperature sensitivity 0 to 60C 0 004 of reading 1 5uV per C referred to input Maximum leadresistance 5 ohms per lead Keying Locations Optional keying locations for the RTD Module are KeyingLocations C D E F G H J K viov 8 Analog Input Module GFK 1206D RTD Input Module June
10. ource 3 In 3 Return 4 ain a Woa We AT in 3 In 4 Return 3 aed HoT Return3 In 4 12 ul In 3 i Ka Source 2 Source 2 ES Return4 10 n Source 1 in 2 eH Source S r Source 3 In 2 not used E In 1 7 Source 1 Source 4 In 1 In 2 14 In 2 6 In 2 Return2 T2 3 In 1 pia 5 In 1 not used n notused W 1 Return 1 n 3 moi not used In 1 notused Ey R nos aea Retun2 2 Fs F not used Return 2 notused S i nat a notused B Shae not used Return 1 Terminals E1 2 E4 E6 and E8 are E electrically connected together Al and A2 are electrically connected together B1 andB2 are electrically connected together 46725 Analog Input Module 9 RTD Input Module GFK 1206D June 1997 Diagnostics The RTD module performs diagnostics and provides the diagnostic data to the BIU using its configured discrete input I references starting at the configured reference offset The RTD sets the appropriate bit when a diagnostic condition is detected The bit remains set until cleared Circuit Diagnostics Bits byte 0 Circuit Diagnostics Bits byte 2 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 _ Low alarm for RTD 1 L Open Wire RTD 1 ______ High a
11. s RTD Type LowQ High Q Low High Limit Limit Temp C Temp C 10 Ohm Copper 25C 6 13600 14 8200 75 00 150 00 10 Ohm Platinum 25C 7 02000 37 2599 70 00 1000 00 25 Ohm Platinum 4 14500 74 3089 201 1111 537 77 100 Ohm Nickel 80 88890 147 7700 40 00 140 00 1 KOhm Platinum amp 00375 199 4880 2754 620 200 00 500 00 100 Ohm Platinum a 00385 27 01 389 936 180 0 850 0 100 Ohm Platinum amp 003902 93 5400 135 000 17 7777 99 9999 100 Ohm Platinum IPTS68 PA 26 5 327 744 200 0 630 0 100 Ohm Platinum SAMA RC21 4 PC 26 5 311 874 200 0 600 0 100 Ohm Platinum JISC 1604 81 26 5 323 780 200 0 620 0 25 5 Ohm Platinum Lab Std PJ 4 50 83 575 200 0 630 0 9 035 Ohm Copper CA 6 05 16 400 100 0 260 0 500Ohm Copper CB 2 28 379 105 787 100 0 260 0 100 Ohm Copper CB 56 757 211 574 100 0 260 0 100 Ohm Nickel NB 69 520 223 221 60 0 180 0 120 Ohm Nickel NA 66 600 380 310 80 0 260 0 604 Ohm Nickel Iror FA 372 789 1318 722 100 0 204 0 1 KOhm Nickel Iron FB 566 576 1985 891 100 0 204 0 Analog Input Module RTD Input Module Module Specifications 7 GFK 1206D June 1997 Module Characteristics Numberof Channels Four3 wireand or4 wireRTDs Scan time 60 Hz approximately 210 milliseconds per point 50 Hz approximately 230 milliseconds per point Faultdetection Open RTD input short underrange overrange andhigh lowalar
12. t 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 Input Selection to Include RTD Type Each input channel can have a different RTD type selectable from a list of many different RTDs If the actual RTD resistance does not match the defined type an adjustment factor can be configured in tenths of ohms Selection Comments Selection Comments Selection Comments 10 PT 10 Ohm Platinum PT 100 PT 3916 100 Ohm Platinum 100 NI 618 100 Ohm Nickel At 0C a 003916 DIN43760 a 00618 25 PT 25 Ohm Platinum IPTS 68 1K PT375 1 KOhm Platinum 120 NI 672 120 Ohm Nickel at 0C a 00375 a 00672 25 5 PT 392 25 5 Ohm Platinum 10CU 10 Ohm Copper at 25C 604NI FE518 604Ohm Nickel Ironat a 00392 at 0C Lab Std IPTS 68 0C oa 00518 100 PT 385 100 Ohm Platinum 9 035CU427 9 035 Ohm Copper at IKNI FE527 1 KOhm Nickel Iron at 70F DIN43760 a 00385 25C a 00427 a 00527 100 PT 3902 100 Ohm Platinum 50 CU 427 50 Ohm Copper 500 OHM Select UNITS of 1 10Ohms a 003902 a 00427 100 PT 392 100 Ohm Platinum 100 CU 427 100 Ohm Copper 3000 OHM Select UNITS of 1 10Ohms a 00392 IPTS 6 8 a 00427 100 PT 3923 98 13 Ohm Platinum 100 NI 100 Ohm Nickel IPTS 68 a 003923 GFK 1206D RTD Limits Analog Input Module RTD Input Module The table below lists the ohms and temperature limits for different RTD type
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