IC695ALG626 GE Fanuc PACSystems RX3i Analog Input Module with HART

Product Overview

IC695ALG626 (IC695ALG626) is a high-resolution analog input module designed for GE Fanuc PACSystems RX3i control platforms. The module provides 16 single-ended or 8 differential analog input channels with integrated HART 5.0 communication capability. Engineers deploy this module in turbine control systems, refinery process skids, power generation monitoring, and critical plant instrumentation where accurate analog acquisition is required.

The design integrates four internal HART modems and supports simultaneous analog and digital device diagnostics. Software configuration eliminates hardware jumpers and simplifies commissioning. Built-in autocalibration, advanced filtering, and high noise rejection maintain measurement stability in electrically harsh environments. The module supports voltage and current ranges including 4 to 20 mA loops commonly used in field transmitters. High resolution 24 bit ADC conversion ensures precise process feedback, reducing control drift and unexpected shutdown risks.

Technical Configuration

The IC695ALG626 installs into RX3i Universal Backplane and communicates directly with RX3i CPUs. Each channel supports independent configuration for voltage or current inputs. Four internal HART modems multiplex channel groups to enable device diagnostics without additional hardware.

The module supports:

• 16 single ended or 8 differential inputs
• HART 5.0 communication per channel group
• 24 bit ADC conversion with floating point output
• Software selectable filters from 8 Hz to 500 Hz
• Per channel scaling and alarm configuration
• Autocalibration at startup
• Open circuit detection and fault reporting

Voltage and current ranges include:

• 0 to 20 mA
• 4 to 20 mA
• plus minus 20 mA
• plus minus 10 V
• 0 to 10 V
• plus minus 5 V
• 0 to 5 V
• 1 to 5 V

Technical Specifications

Technical FAQs

Does IC695ALG626 support HART communication on every channel?
Yes. The module supports HART communication through four internal modems. Channels are multiplexed into modem groups.

Which CPU is required for this module?
RX3i CPU firmware version 3.5 or later is required. Machine Edition 5.5 or newer configures the module.

Can the module work with differential inputs?
Yes. Configure the module for 8 differential inputs through software configuration.

What terminal blocks are compatible?
IC694TBB032, IC694TBB132, IC694TBS032, and IC694TBS132 terminal blocks are supported.

Engineering & Installation Guide

Use shielded twisted pair wiring for 4 to 20 mA HART loops. Ground the shield at one end only to avoid ground loops.

Distribute HART devices across channel groups 1, 5, 9, and 13 to minimize update time. This reduces multiplex delay.

Install the module in slots with adequate airflow. High channel count current mode increases thermal load.