GE Fanuc IC694ALG442 RX3i Analog Mixed Combination I/O Module

Product Overview

The GE IC694ALG442 is an Analog Combination Module for the Emerson PACSystems RX3i programmable automation controller platform. It provides 4 analog input channels and 2 analog output channels in a single module, featuring software-configurable input ranges and high-resolution A/D and D/A conversion.

Key Specifications

• Model Number: IC694ALG442
• Series: PACSystems RX3i
• Product Type: Analog Combination Module
• Analog Inputs: 4 channels (voltage or current)
• Analog Outputs: 2 channels (voltage or current)
• Input Resolution: 12 binary bits (from A/D converter); each channel supports 15-16 bit conversion
• Input Voltage Ranges:
  • 0 to +10V (Unipolar): 2.5 mV (1 LSB)
  • -10 to +10V (Bipolar): 5 mV (1 LSB)
• Input Current Range: 4 to 20 mA: 5 µA (1 LSB)
• Input Impedance: >10 MΩ (voltage); 250 Ω (current)
• Absolute Accuracy (Inputs):
  • Voltage: ±0.25% of full scale @ 25°C; ±0.5% @ 0-60°C
  • Current: ±0.5% of full scale @ 25°C; ±1.0% @ 0-60°C
• Update Rate (Inputs): 8 milliseconds (all 4 channels)
• Output Resolution: 12 binary bits (from D/A converter)
• Output Voltage Ranges: 0 to +10V (Unipolar); -10 to +10V (Bipolar)
• Output Current Range: 4 to 20 mA
• Output Load (Voltage): 2000 Ω minimum
• Output Load (Current): 250 to 800 Ω
• Absolute Accuracy (Outputs): ±0.5% of full scale @ 25°C; ±1.0% @ 0-60°C
• Update Rate (Outputs): 4 milliseconds (both channels)
• Power Consumption: 95 mA @ +5VDC; 129 mA @ +24VDC Isolated
• LED Indicators: MODULE OK, User Supply
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Humidity: 5% to 95% (non-condensing)
• Dimensions: 12.5 × 9.0 × 3.5 cm
• Weight: 0.35 kg

Core Features

• Combined 4-input/2-output analog module saves rack space
• Software-configurable input and output ranges (no jumpers)
• High-resolution 12-bit A/D and D/A conversion
• Individual channel configuration for flexible application
• Removable 20-pin terminal block for easy wiring
• Module OK and User Supply LED status indicators

Applications

• Closed-loop PID control (input feedback + output control)
• Process variable monitoring and setpoint control
• Variable speed drive control with feedback
• Multi-parameter analog control systems

FAQ

Q: What is the actual resolution of the A/D converter?
A: The A/D converter provides 12 binary bits. Each channel supports 15-16 bit conversion, with voltage input resolution of 2.5 mV (1 LSB) for 0-10V range.

Q: Can inputs and outputs be used simultaneously?
A: Yes, all 4 inputs and 2 outputs can operate simultaneously and independently with different range configurations.

Installation Guide

1. Power down the RX3i rack before installation.
2. Insert the IC694ALG442 into any I/O slot of the RX3i universal backplane.
3. Install the removable 20-pin terminal block.
4. Connect analog input signals (voltage or current) to input channels.
5. Connect analog output signals to output channels.
6. Configure channel types and scaling via RX3i programming software.

Selection Tips

• For 8-channel analog output only, use IC694ALG392.
• For 16-channel current input, use IC694ALG223.
• For universal analog input (TC/RTD), use IC695ALG600.
• Verify output load impedance matches application requirements (2 kΩ min for voltage, 250-800 Ω for current).