GE IC693MDL940C Relay Output Module

The GE Fanuc IC693MDL940C, also cataloged as the IC693MDL940 Relay Output Module, operates as a dedicated hardware component for high-power discrete load switching and interphase circuit isolation within Series 90-30 PLC platforms.

Hardware Specifications

Backplane Bus Communication Velocity and Firmware Compatibility

The GE Fanuc IC693MDL940C output module maintains deterministic backplane bus communication velocity across standard Series 90-30 sub-rack backplanes. Optical isolation barriers protect backplane signal traces from high-voltage field surges and switching transients, preserving backplane bus clock synchronization and firmware flash compatibility during high-density I/O scan execution.

Frequently Asked Questions

Q: What are the primary backplane power requirements for the IC693MDL940C?

A: The IC693MDL940C requires 7 mA from the internal 5 VDC bus to power backplane logic and up to 135 mA from the 24 VDC relay supply when all output relay coils are energized.

Q: How are the 16 relay outputs isolated across field wiring points on the IC693MDL940C?

A: The module configures 16 normally open outputs into two isolated groups of eight points each, providing 500 VAC group-to-group isolation and 1500 VAC isolation relative to the backplane.

Field Installation Guidelines

1. Insert the IC693MDL940C module into any standard I/O slot of a Series 90-30 baseplate, pressing firmly until top and bottom latches click securely into the chassis backplane.
2. Terminate load wiring at the 20-terminal removable connector, ensuring current per common return terminal does not exceed the maximum 4 A rating.
3. Install external RC surge suppressors across AC inductive loads or flyback diodes across DC inductive loads to mitigate contact arcing and extend relay contact lifespan.
4. Separate field output wiring from low-level communication or analog signal cables in panel wireways to prevent inductive noise coupling.