OVERVIEW

Official designation: GE Fanuc IC694ALG221 (PACSystems RX3i, Analog Input Module)

Role/Application: Four-channel current input module for the RX3i system, designed for precise process monitoring by accepting 0 to 20 mA or 4 to 20 mA signals with optical isolation from field to backplane.

KEY SPECS SUMMARY

Power: 25 mA from 5 VDC, 100 mA from 24 VDC Isolated

Interfaces / Ports: Terminal block for I/O connection

Indicators: Module OK LED only

Operating Temp: 0 degrees C to 60 degrees C

Platform / Compatibility: PACSystems RX3i Universal Backplane

Limit: 200 Volts common mode voltage

Lifecycle: Active or Discontinued, varies by model/revision

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the specific resolution values for the two input current ranges on the module?

A: Resolution is 4 microamperes per count for 4 to 20 mA and 5 microamperes per count for 0 to 20 mA.

Wiring & Installation:

Q: What type of cable is recommended for connecting field devices to the module inputs?

A: Use high-grade twisted, protected instrumentation cable for proper noise and capacitive issue reduction.

Troubleshooting & Compatibility:

Q: What is the maximum update rate for all four input channels on this module?

A: All four channels have a combined maximum update rate of 2 milliseconds.

Replacement & Upgrades:

Q: How is the input range selected between 0 to 20 mA and 4 to 20 mA?

A: Input range selection is achieved by installing or removing two range jumpers located on the I/O terminal panel.