GE IC693MDL940L Relay Output

Configured for discrete load switching and interphase isolation in Series 90-30 Programmable Logic Controller system architectures, the GE Fanuc IC693MDL940L (IC693MDL940 Relay Output Module) provides direct physical/electrical execution.

Hardware Specifications

Backplane Bus Communication Velocity and Firmware Compatibility

The module interfaces directly with the Series 90-30 backplane bus, executing high-velocity parallel status scanning managed by the CPU system logic. Internal logic circuits drive optical isolation barriers to convert backplane bus communication velocity commands into physical relay coil energization without injecting noise into the CPU backplane logic power rail. Firmware flash compatibility across the Series 90-30 family ensures immediate module recognition across standard 5-slot and 10-slot baseplates without requiring system baseplate software reconfiguration.

Frequently Asked Questions

Q: Does the IC693MDL940L module include internal output fuses for field short-circuit protection?

A: No, the module contains no internal fuses. External fast-acting fuses rated for the specific field load current must be installed on each common or output circuit line to prevent contact damage from short circuits.

Q: What on-board transient suppression circuits are built into the module outputs?

A: Each output point features built-in transient suppression components, including a 1 A / 200 V diode circuit optimized for DC loads and an RC snubber network designed to damp voltage spikes caused by AC inductive loads.

Field Installation Guidelines

1. Power off the Series 90-30 rack power supply prior to inserting or removing the module from the baseplate slot.
2. Ensure the module guide rails align correctly with any available I/O slot on a 5-slot or 10-slot baseplate, pressing firmly until the top and bottom retaining clips snap securely.
3. Wire field devices using the terminal block, maintaining clear physical separation between AC power lines and low-voltage DC signals.
4. Verify that field supply voltages remain within specified operating bounds (5 to 30 VDC or 5 to 250 VAC) and do not exceed the 4 A maximum limit per common terminal.
5. Connect cable shielding and field commons to the system protective earth ground bar using short, high-frequency grounding straps to maximize noise immunity.