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GE IC670ALG620 Datasheet

Rtd 4 channel isolated 3 or 4 wire input.
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This Datasheet for the
IC670ALG620
RTD 4 Channel Isolated 3 or 4 Wire input
http://www.cimtecautomation.com/parts/p-14496-ic670alg620.aspx
Provides the wiring diagrams and installation guidelines for this GE Field Control
module.
For further information, please contact Cimtec Technical Support at
1-866-599-6507
sales@cimtecautomation.com

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   Summary of Contents for GE IC670ALG620

  • Page 1

    This Datasheet for the IC670ALG620 RTD 4 Channel Isolated 3 or 4 Wire input http://www.cimtecautomation.com/parts/p-14496-ic670alg620.aspx Provides the wiring diagrams and installation guidelines for this GE Field Control module. For further information, please contact Cimtec Technical Support at 1-866-599-6507 sales@cimtecautomation.com...

  • Page 2

    RTD Input Module ( IC670ALG620 datasheet GFK-1206D 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: Selectable resistance measurements in tenths of ohms, tenths of degrees Fahrenheit, or...

  • Page 3

    Analog Input Module GFK-1206D RTD Input Module June 1997 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.

  • Page 4

    Analog Input Module RTD Input Module GFK-1206D June 1997 Host Interface The RTD Input module has the following data types: 4 analog inputs (4 words) 32 bits of discrete input data for module and channel status (use of this data is optional) 8 bits of discrete output data for fault clearing to the module (also optional) Analog output data defaults to a length of 0, and should NOT be used for most applications.

  • Page 5

    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.

  • Page 6

    Analog Input Module RTD Input Module GFK-1206D June 1997 Module Features Channel Active Each channel can be configured as either active or inactive. 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...

  • Page 7

    Analog Input Module GFK-1206D RTD Input Module June 1997 RTD Limits The table below lists the ohms and temperature limits for different RTD types. Low Ω High Ω RTD Type High Limit Limit Temp. C Temp. C 10 Ohm Copper @ 25C 6.13600 14.8200 –75.00...

  • Page 8

    Analog Input Module RTD Input Module GFK-1206D June 1997 Module Specifications Module Characteristics Number of Channels Four 3-wire and/or 4-wire RTDs Scan time 60 Hz: approximately 210 milliseconds per point 50 Hz: approximately 230 milliseconds per point, Fault detection Open RTD, input short, underrange, overrange, and high/low alarm Normal mode rejection 60dB, at 50/60 Hz, 100% span Common mode rejection...

  • Page 9

    Analog Input Module GFK-1206D RTD Input Module June 1997 Field Wiring The following illustration shows connections for 3-wire and 4-wire RTDs. Required for Calibration if no Corresponding 4-Wire RTD 3-Wire RTD RTD is Installed Terminals Source Source Source In (+) In (+) In (+) 5 6 13 14...

  • Page 10

    Analog Input Module 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.

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