GE Fanuc IC694MDL930D

Product Overview

The GE Fanuc IC694MDL930D is an isolated relay output module designed for the PACSystems RX3i automation platform. It provides eight individually isolated Form A normally open relay outputs, making it suitable for industrial control systems that need to switch different AC or DC field loads.

Each output can operate across a broad voltage range. Therefore, the module can be used for applications involving both 24 VDC control devices and higher-voltage AC loads. Its isolated relay architecture also helps separate field circuits from the controller backplane.

Technical Specifications

The module draws approximately 6 mA from the 5 V backplane bus and up to 70 mA from the 24 V relay bus when all outputs are energized.

Main Features

The IC694MDL930D offers several characteristics that make it useful for industrial output control:

• Eight individually isolated relay channels
• Form A normally open contacts
• Support for AC and DC field loads
• Up to 4 A resistive load per output
• 2 A pilot-duty capability per output
• High field-to-backplane isolation
• Low backplane power consumption
• Suitable for distributed or local I/O applications
• Individual output status indication

Moreover, individually isolated outputs allow different field voltage levels to be handled on separate channels. This provides greater flexibility when designing control cabinets and replacing older relay interfaces.

Structure and Operating Principle

The module combines relay switching components, isolated output circuits, status indicators, and the backplane interface in a compact industrial I/O assembly. The field-side relay contacts are dry contacts, so an external supply is used to power the connected load.

When the PLC logic commands an output, the corresponding relay energizes and closes its normally open contact. The external field voltage can then pass through the contact to the connected actuator or control device.

The module provides 250 VAC continuous isolation between the field side, backplane, and frame ground, with a 1500 VAC isolation rating for one minute.

Applications

Typical applications include industrial machinery, process equipment, motor control circuits, alarm systems, solenoid control, contactor operation, and general PLC-based switching.

The module is particularly useful when an automation system needs to control devices operating at different voltage levels. For example, one output can be used with a 24 VDC device while another controls a suitable AC load, provided that each circuit remains within the module’s electrical ratings.

Installation and Maintenance

Before installation, verify the complete module number, system configuration, field voltage, load current, wiring arrangement, and backplane requirements. The connected load should remain within the specified resistive and pilot-duty ratings.

During maintenance, inspect terminal connections for looseness, overheating, corrosion, or damaged wiring. Also check relay operation and output indicators during normal system testing. Because relay contacts are mechanical components, their service life can vary with switching voltage, load type, and operating frequency.

Our company supplies the GE Fanuc IC694MDL930D for PLC maintenance, automation upgrades, and replacement applications. Product revision and physical condition should be confirmed before installation.