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IC693PWR324 Image of IC694ALG223 IC694ALG223 In Stock! Input module, analog 16 point single ended, current. IC694A IC694AL IC694ALG P IC694ALG223

SKU 2174016  UPC 0799705802414

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Other Available Revisions for the IC694ALG223 -AA-BA-DBLT

Common misspellings:
  • 1C694ALG223
  • lC694ALG223
  • IC69AALG223
  • IC694A1G223
  • IC694ALG223

Product Description


IC694ALG223 is an Analog Current Input Module with 16 channels/single-ended inputs. Each input can be configured with the software provided for any of three input ranges: 4 to 20 mA, 0 to 20 mA, or 4 to 20 mA Enhanced.


Alarm limits are available in high and/or low on all ranges. In the 4 to 20 mA Enhanced range, a low alarm limit can detect input current from 4 mA to 0 mA, which provides open-wire fault detection in 4 to 20 mA applications. The module can report module status and external power status to the CPU using assigned program reference addresses. Installation of the IC694ALG223 module is consistent with any I/O slot in an RX3i system.


IC694ALG223 uses 120 mA from the 5 VDC bus on the PLC backplane and requires 65 mA plus current loop current(s) from a user-supplied +24 VDC supply.


The MODULE OK LED emits module status info on power-up. If the LED shows ON, then the status is OK, and the module is configured. If it shows OFF, then no backplane power is recognized, or the watchdog timer has timed out). Continuous rapid flashing: indicates that configuration data is not being received from the CPU. Slow flashes followed by OFF suggest failed power-up diagnostics or an encountered code execution error. The User Supply LED confirms that the external 24 VDC supply is within expected specifications.


The IC694ALG223 module’s configurable parameters include active channels, reference address for input data, length and range, low/high alarm, and I/O scan set. 

Technical Specifications

No. of channels: 16 single-ended
Current Range: 4 - 20 mA, 0 - 20 mA, 4 - 20 mA
Calibration: Factory (to 4 μA or 5 μA per count)
Update Rate: 13 msec
Input Filter Response:    200 Hz
Power Consumption: 120 mA @ +5VDC, 65 mA @ +24VDC Isolated



Technical Information

Specifications: ALG223

Number of Channels

1 to 16 selectable; single-ended

Input Current Ranges

0 to 20 mA, 4 to 20 mA and 4 to 20 mA Enhanced (selectable per channel)


Factory calibrated to:

4  μA per count on 4 to 20 mA range

5  μA per count on 0 to 20 mA  and 4 to 20 mA Enhanced range

Update Rate

Update Rate: 6 ms

Resolution at 4–20 mA

4 μA (4 μA/bit)

Resolution at 0–20 mA

5 μA (5 μA/bit)

Resolution at 4–20 mA Enhanced

5 μA (5 μA/bit)

Absolute Accuracy 1

±0.25% of full scale @ 25°C (77°F): ± 0.5% of full scale over specified operating temperature range


< 1 LSB from 4  to 20 mA (4 to 20 mA range)

< 1 LSB from 100 μA to 20 mA (0 to 20 mA and 4 to 20 mA Enhanced ranges)

Isolation, Field to Backplane (optical) and to frame ground

250 VAC continuous; 1500 VAC for 1 minute

Common Mode Voltage2

0 volts (single-ended channels)

Cross–Channel Rejection

> 70dB from DC to 1kHz

Input Impedance

250 

Input Low Pass Filter Response

19 Hz

External Supply Voltage Range

20 to 30 VDC

External Supply Voltage Ripple


Internal Power Consumption

120 mA from the +5 VDC bus on the backplane

65 mA from 24 VDC external user power supply (in addition to current loop currents)


Troubleshooting IC694ALG223

Troubleshooting information is available on IC694ALG223's website page; it also includes a datasheet user-manual and a wiring diagram.


Repair your IC694ALG222

PDF Supply can repair your IC694ALG222 in 3-5 business days. And PDF Supply stands by all of its repairs with a 1 year customer satisfaction warranty.


Analog Input Fusing for Current Inputs 0-20mA and 4-20mA


As a general rule, the GEIP Current Analog Inputs can be fused using a 25 mA fast blow fuse. Most analog transmitters will not fail and produce above 25 mA so this fuse value will protect the input circuit in the case of a serious failure or short circuit. Each input circuit typically contains a 1/4 watt 250 Ohm precision resistor and a Analog to Digital Converter that has some level of protection built in. The actual protection level can only be determined by the specific ADC specification sheet. Because these parts may change during production runs and be different between modules, the number is not published, however external fusing as close to 25 mA as possible should protect any GEIP input circuit.


The IC693ALG223 and the IC694ALG223 have enough protection built in to easily allow a 32 mA fast blow fuse to be used.


 Customer Questions and Answers

  • Question:  What is an IC694ALG223?  Answer:  The IC694ALG223 is a 16 Channel, Current, Analog Input module from the GE Fanuc RX3i Series. 
  • Question:  What does IC694ALG223 provide?  Answer:  This module provides 16 single-ended inputs. 
  • Question:  For what 3 ranges can each channel be configured using the configuration software?  Answer:
    • 4 to 20 mA
    • 0 to 20 mA
    • 4 to 20 mA Enhanced
  • Question:  Can high and low alarm limits be configured for both ranges?  Answer:  Yes, they can. 
  • Question:  What happens in the 4 to 20 mA Enhanced range?  Answer:  In this range, a low alarm limit can be set up to detect input current from 4 mA to 0 mA, providing open-wire fault detection in 4 to 20 mA applications
  • Question:  Into what slot can IC694ALG223 be installed, in an RX3i system?  Answer:  This module can be installed in any I/O slot of an RX3i system.
  • Question:  How much mA does IC694ALG223 consume from the 5 VDC bus on the PLC backplane?  Answer:  120 mA
  • Question:  What does IC694ALG223 also require?  Answer:  This module requires 65 mA plus current loop current(s) from a user-supplied +24 VDC supply.
  • Question:  What do the LEDs on IC694ALG223 indicate?  Answer:
    • ON: status is OK, module configured
    • OFF: no backplane power or software not running (watchdog timer timed out)
    • Continuous rapid flashing: configuration data not received from CPU
    • Slow flashes, then OFF: failed power-up diagnostics or encountered code execution error
    • The User Supply LED indicates that the external 24 VDC supply is within specifications.
  • Question:  What should I do if my IC694ALG223 is not working properly?  Answer:  Your IC694ALG223 may need repair

For more information on the IC694ALG223 16 Channel, Current, Analog Input Module of the GE Fanuc RX3i Series, please see the Datasheet User-Manual.

Release History


Firmware Release



IC694ALG223-DB IC693ALG223-GB


May 2012

Resolves several rarely-occuring issues that were identified in field and factory testing.

IC694ALG223-BA IC693ALG223-EA


Apr. 2011

Adds ability to perform field upgrades in RX3i targets.

Adds display of module serial number, revision and date code in programming software in RX3i targets.


ST. LOUIS, Feb. 1, 2019 – Emerson today announced it has completed the purchase of Intelligent Platforms from General Electric.

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