GE IC694APU305 Pulse I/O Processing Module

Overview

The IC694APU305 is a high-performance Pulse I/O Processing Module developed by GE Fanuc for the PACSystems RX3i platform. Engineers deploy it for real-time processing of encoder signals, flow meters, and high-speed counters. Unlike traditional modules, it processes pulse inputs and outputs independently from the system CPU, improving speed and responsiveness. This makes it ideal for motion control, position tracking, and event-based control.

Technical Specifications

General

• Model Number: IC694APU305

• Series: PACSystems RX3i

• Function: Pulse I/O Processing / High-Speed Counter Module

• Mounting Type: RX3i rack-mounted

• Maximum Modules per System: No limitation

Power Supply

• Voltage: 5 VDC from RX3i backplane

• Current Draw: 360 mA + (10 mA × number of active outputs)

Input Specifications

• Number of Inputs: 12 optically isolated inputs

• Input Type: Positive logic

• Input Voltage Range:

• TTL: 5 VDC

• Non-TTL: 10–30 VDC (selectable)

• Maximum Input Voltage: +30 VDC

• Input Impedance: 4300 ohms typical

• Input Hysteresis: 250 mV typical

Output Specifications

• Number of Outputs: 8 optically isolated outputs

• Output Type: Positive logic

• Output Ratings:

• 4 outputs: 1A

• 4 outputs: 0.5A

• Output Protection: One 5A replaceable fuse (5 × 20 mm) shared by all outputs

• Maximum Supply Voltage: 30 VDC

Counter & Encoder

• Count Rate: Up to 1 MHz in Enhanced Mode

• Counter Range: –2,147,483,648 to +2,147,483,647 (32-bit signed)

• Supported Encoders: A QUAD B, Gray Code, Absolute Encoder

Isolation & Protection

• Field I/O to Logic Isolation:

• Peak (1 sec): 1500 V

• Steady-State: 30 V AC/VDC

Status Indicators

• LEDs: 6 green LEDs for module and output status

Environmental

• Operating Temperature: –40°C to +70°C

• Storage Temperature: Not specified (follows RX3i standards)