GE Fanuc IC694ALG221CAA | PACSystems RX3i 4-Channel Analog Input Module (Current)

The GE Fanuc IC694ALG221CAA is a high-resolution analog input module designed for the PACSystems RX3i platform. This module provides four dedicated input channels for monitoring industrial process signals, specifically in the 4 to 20 mA current range. The “CAA” suffix indicates a specific hardware revision, often incorporating conformal coating for protection against harsh environmental factors like moisture and chemical contaminants, ensuring long-term reliability in industrial settings.

GE IC694ALG221CAA

Product Specifications

  • Model Number: IC694ALG221CAA

  • Platform: PACSystems RX3i

  • Number of Channels: 4 (Single-ended)

  • Input Range: 4 to 20 mA (Can be scaled via software)

  • Resolution: 12-bit (4,000 counts over 4–20 mA)

  • Dimensions: 135 mm x 34 mm x 100 mm (Standard Single Slot)

  • Weight: 0.38 kg

  • Update Rate: 4 milliseconds (all four channels)

  • Accuracy: ±0.1% of full scale at 25°C

  • Internal Power Consumption: 100 mA from +5V bus; 25 mA from +24V bus

  • Input Impedance: 250 Ohms

Application Fields

The IC694ALG221CAA is widely used in process control applications where precise current monitoring is required. Common application fields include water and wastewater treatment (monitoring flow meters and pressure transmitters), oil and gas refining (temperature and level sensing), and chemical manufacturing. Its 12-bit resolution makes it suitable for standard regulatory control loops where high accuracy and fast update times are essential for maintaining process stability.

Product Instructions

This module should be installed in any available I/O slot in an RX3i Universal Backplane (IC695 series) or Expansion Backplane (IC694 series). Note that while it is an IC694 series module, it is fully compatible with RX3i universal racks. Wiring should be performed using shielded twisted-pair cables to minimize electromagnetic interference. The module requires an external 24VDC power supply to power the input circuitry. Configuration is handled through GE Proficy Machine Edition, where the user defines the range, scaling, and alarm limits for each channel. Ensure the terminal block is securely tightened to prevent signal fluctuations.

FAQ: Common Questions and Answers

Q: Can this module measure 0 to 20 mA signals? A: No, the IC694ALG221 is specifically designed and calibrated for the 4 to 20 mA range. For 0–20 mA or voltage applications, you would typically use the IC694ALG220 or IC694ALG223 modules.

Q: Does the module provide loop power for the sensors? A: No. The IC694ALG221 is a passive input module. You must provide an external 24VDC power source to the current loop to power your field transmitters.

Q: What does the “CAA” revision imply? A: The “CAA” usually denotes a specific hardware build that often includes conformal coating. This makes the module more resistant to corrosion and “dendrite” growth in humid or salt-air environments.

For procurement and technical support regarding the GE IC694ALG221CAA, please contact our specialized automation team.

Recommended Similar Models

  • GE IC694ALG220 (4-Channel Analog Input, Voltage)

  • GE IC694ALG223 (16-Channel Analog Input, Current)

  • GE IC695ALG600 (Universal Analog Input Module)

  • GE IC694MDL740 (24VDC Output Module)

  • GE IC694TBS032 (Terminal Block for I/O Modules)

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