GE Fanuc IC693MDL940D Series 90-30 Relay Output Module

The GE Fanuc IC693MDL940D serves as the primary IC693MDL940 Relay Output Module utilized to execute discrete load switching and output isolation across Series 90-30 PLC platforms.

Hardware Specifications

Backplane Bus Architecture & I/O Isolation

The module interfaces directly with the Series 90-30 backplane bus, utilizing optocoupler isolation to maintain deterministic backplane bus communication velocity and system logic integrity. Field output control signals pass across high-speed optical barriers rated for 1500 V RMS isolation to protect backplane microcomputers from external field noise and switching spikes. The 16 discrete channels are structured into four independent isolated groups, providing I/O density scaling and galvanic separation between isolated external AC and DC load circuits.

Frequently Asked Questions

Q: Does the IC693MDL940D module contain internal protection fuses for individual relay output channels?

A: No. The module contains no internal fuses. External current-limiting fuses must be wired into each output point circuit or group common to protect relay contacts against overcurrent faults.

Q: What are the backplane current draw requirements for the IC693MDL940D hardware module?

A: The module draws 7 mA from the internal +5 VDC logic bus and 135 mA from the +24 VDC relay power supply bus during active output state conditions.

Field Installation Guidelines

1. Disconnect main supply power to the baseplate and field circuits prior to mounting or removing the module.
2. Align the module circuit board edge with the top and bottom card guides of the selected baseplate I/O slot, pushing firmly until the module locks into the backplane connector.
3. Wire the field devices to the removable 20-terminal block, ensuring output point current does not exceed 2 A per point or 4 A per common terminal.
4. Route AC load lines, DC signal wiring, and communication cables in separate grounded metallic conduits to eliminate inductive coupling and electrical interference.