Product Overview

The GE Fanuc IC694APU305 is a pulse I/O processing module for the RX3i system. It processes pulse train signals without connection to external PLC or CPU systems. This device provides DC power for most pulse metering electronic devices. The GE Fanuc IC694APU305 needs an external power source for encoders in motion-controlled systems. Users trust this module for flow metering, event counters, and encoder applications.

Technical Specifications

The IC694APU305 delivers high-speed pulse processing with optical isolation. Below are the complete technical details.

General Specifications

• Brand: GE Fanuc for industrial automation reliability.

• Series: RX3i PACsystem programmable automation controller platform.

• Part Number: IC694APU305 for precise identification.

• Product Type: Pulse I/O Processing Module.

• Application: Flow metering, event counters, encoder and decoder signals.

• Maximum Modules per RX3i System: No limit for scalability.

Power Specifications

• Power Supply Voltage: 5V DC from the backplane.

• Power Supply Current: 360 mA + (10 mA x number of faceplate outputs powered on).

• Backplane Dependence: Requires RX3i backplane for adequate operation.

• External Encoder Power: User must supply external power for encoders.

• Input Device Power: Module provides DC power for most pulse metering devices.

Input Specifications

• Input Types: Positive Logic, optically isolated.

• Typical Input Impedance: 4300 Ohms.

• Hysteresis: 250 mV for noise immunity.

• Maximum Supply Voltage: 30V DC.

• Shielding Requirement: Wiring must be shielded to avoid noise.

• Maximum Cable Length: 30 meters for input wiring.

Output Specifications

• Output Type: Positive Logic, optically isolated.

• Output Fuse: 5 A (5 x 20 mm replaceable) common to all outputs.

• Fuse Protection: Prevents overcurrent or short circuit damage.

Isolation Specifications

• Field I/O to Logic Isolation (Peak): 1500V for 1 second.

• Field I/O to Logic Isolation (Steady State): 30V AC/V DC.

• Optical Isolation: Inputs and outputs are optically isolated.

• Protection: Avoids overcurrent or short circuit-related damages.

High-Speed Counter Performance

• Maximum Count Rate (Absolute Encoder): 30 kHz.

• Maximum Count Rate (Quad B Encoder): 200 kHz.

• Processing Speed: Fast enough for motion control applications.

• Pulse Train Handling: Designed for managing pulse signals.

Environmental Specifications

• Operating Temperature: Standard industrial range.

• Installation: Inside RX3i rack with backplane power.

Installation Guide

Follow these steps to install the GE Fanuc IC694APU305 correctly.

1. Power Down the Rack: Turn off all power to the RX3i backplane.

2. Locate an Available Slot: Find any empty I/O slot in the RX3i rack.

3. Insert the Module: Slide the IC694APU305 into the slot carefully.

4. Secure the Module: Lock the module using the retaining levers.

5. Apply Backplane Power: Ensure 5V DC is available from the backplane.

6. Calculate Power Draw: Account for 360 mA plus 10 mA per powered output.

7. Connect Shielded Wiring: Use shielded cables for all input connections.

8. Limit Cable Length: Keep input wiring under 30 meters maximum.

9. Connect Pulse Sources: Wire flow meters or event counters to inputs.

10. Connect Outputs: Wire outputs to indicators or actuators as needed.

11. Provide External Encoder Power: Supply external DC power for encoders.

12. Check Fuse Rating: Verify the 5A common output fuse is installed.

13. Apply Power: Turn on the backplane power to the rack.

14. Configure High-Speed Counter: Set parameters for 30 kHz or 200 kHz operation.

15. Test Pulse Processing: Verify pulse train signals are processed correctly.

Installation Notes

• No limit exists on how many modules connect to a single RX3i system.

• The module provides DC power for pulse metering devices but not for encoders.

• Input wiring must be shielded to avoid noise and interference.

• Optical isolation protects against overcurrent and short circuits.

• The output fuse is replaceable (5 x 20 mm, 5A rating).

Packaging List

This unit ships as a new and original product.

• GE Fanuc IC694APU305 Pulse I/O Processing Module

• Replaceable 5A output fuse (5 x 20 mm)

• Product data sheet with wiring guide

• Anti-static factory packaging box

Frequently Asked Questions (FAQ)

1. What is the maximum count rate for the IC694APU305?
The GE Fanuc IC694APU305 processes up to 30 kHz with an absolute encoder. With a Quad B Encoder, it reaches 200 kHz maximum count rate.

2. Does this module provide power for external encoders?
No, the IC694APU305 does not power external encoders. Users must supply an external power source for encoders in motion-controlled systems.

3. How many IC694APU305 modules can I install in one RX3i system?
The GE Fanuc IC694APU305 has no limit on the number of modules per RX3i system. Add as many as needed for your pulse signals.

4. What is the maximum input wiring length for this module?
Input wiring for the IC694APU305 must have a maximum length of 30 meters. All wiring should be shielded to avoid noise and interference.

5. Are the inputs and outputs on this module optically isolated?
Yes, the GE Fanuc IC694APU305 features optically isolated inputs and outputs. Both use positive logic for reliable operation.