GE Fanuc IC200ALG264 Analog Current Input Module

Product Overview

The IC200ALG264 (IC200-ALG-264) is a high-density, 15-channel analog input module from the GE VersaMax series, specifically designed for precision monitoring of current signals. It is engineered to accept unipolar current inputs ranging from 0 to 20 mA or 4 to 20 mA, making it a critical component for processing feedback from transmitters in chemical plants, water treatment facilities, and HVAC systems. By offering 15 channels in a single compact footprint, the IC200ALG264 maximizes panel space efficiency while providing 12-bit resolution for accurate data acquisition. Its seamless integration with VersaMax CPUs and Network Interface Units (NIUs) ensures high-speed data throughput and robust performance in distributed I/O architectures.

Technical Configuration

The module features a high-density architecture where 15 channels share a common return, optimized for space-constrained installations. It utilizes a 12-bit A/D converter, providing 4,000 counts over the signal range. The module is "Hot-Swappable" when used with appropriate VersaMax terminal bases, allowing for maintenance without system shutdown. Built-in diagnostics include "Open Wire" detection for 4-20 mA mode and monitoring of the user-supplied 24 VDC power, with front-facing LED indicators for "OK" and "User Power" status to simplify field troubleshooting.

Technical Specifications

Technical FAQs

Does this module require external 24 VDC to function?

Yes. The IC200ALG264 requires an external 24 VDC power supply to power the analog-to-digital conversion circuitry. This power is connected via the terminal base. If the "User Power" LED is not illuminated, the module will report zero or under-range values to the CPU.

How does the 15-channel "Common Return" affect wiring?

Unlike 8-channel isolated modules, all 15 channels on the IC200ALG264 share a single common return path. This means all field transmitters must be compatible with a shared ground system. For loops requiring full galvanic isolation between channels, a different module or external signal isolators should be used.

What happens if a 4-20 mA wire is broken?

In 4-20 mA mode, the module provides a low-range diagnostic. If the current drops below approximately 3.5 mA, the PLC will typically report a "Low Alarm" or "Open Wire" fault for that specific channel, allowing for immediate maintenance.

Engineering & Installation Guide

• Terminal Base Selection: This high-density module must be paired with a compatible terminal base, such as the IC200TBT002 (Barrier style) or IC200TBP002 (Spring style). Ensure the base is keyed correctly to prevent accidental insertion of digital modules into the analog slot.

• Shielding for High-Density I/O: With 15 analog signals in close proximity, crosstalk and EMI are potential risks. Use high-quality shielded twisted-pair cabling and ensure the shields are terminated at the PLC end to a dedicated earth ground bar.

• Loop Power Considerations: If the field transmitters are "2-wire" types (loop-powered), ensure your external 24 VDC power supply has sufficient amperage to power all 15 loops simultaneously, plus the module's own power requirement (approx. 50 mA).