GE Fanuc IC693MDL930 8-Channel Relay Output Module

Product Overview

The GE Fanuc IC693MDL930 is an 8-channel isolated relay discrete output module designed for the Series 90-30 programmable logic controller (PLC) system. This versatile module features eight independent, normally open (Form A) relay circuits that allow the PLC to interface with external actuators, solenoids, motor starters, and pilot indicators. By providing complete electrical isolation between internal logic and external field wiring, the IC693MDL930 enables seamless, concurrent control of both AC and DC industrial loads from a single PLC rack assembly.

Technical Configuration

Core Technical Advantages

The IC693MDL930 utilizes high-reliability mechanical relays that provide independent power isolation for each of its eight output points. It handles a wide range of switching voltages—up to 30 VDC or 250 VAC—offering great application flexibility. The modular design drops tool-less swap-out times dramatically, plugging directly into any standard I/O slot of a Series 90-30 baseplate. Low internal power consumption preserves system energy efficiency while minimizing thermal generation within local panel layouts.

Technical Specifications

Installation Guide

Mechanical Mounting and Slot Insertion

Turn off the main rack power before installing the module. Align the top hook of the IC693MDL930 housing with the retention slot on the Series 90-30 baseplate. Pivot the module downward until the rear bus connector snaps securely into the backplane, then tighten the bottom securing screw.

Field Terminal Blocks and Wiring

Swing open the front terminal door to access the screw connectors. Connect individual field circuits using up to 14 AWG wire leads. Because each channel is fully isolated, you can mix distinct AC and DC supply loops across adjacent terminals without introducing cross-talk or short circuits.

Surge Suppression for Inductive Loads

When switching inductive loads like relay coils, magnetic starters, or solenoids, install external noise suppression components. Wire a commutation diode across DC circuits, or snap a metal oxide varistor (MOV) network across AC loads to suppress voltage arcs and extend mechanical relay life.

Engineering Advantages

Isolated Multi-Voltage Management

The channel-to-channel isolation on the IC693MDL930 eliminates the need for separate DC and AC output cards. Engineers can control high-current 240 VAC mechanisms and low-signal 24 VDC indication lines on a single hardware block, optimizing total system layout costs.

Industrial Protection and Visibility

The module includes a removable front terminal block, allowing maintenance teams to swap module electronics without disconnecting field wires. Front-facing LED indicators display the real-time ON/OFF state of each logic channel, providing instant diagnostic visibility for field technicians.

Technical FAQs

Q1: Can I use the IC693MDL930 to switch extremely low signal current lines?

A1: Yes, the contact resistance accommodates signals down to 5V. However, mechanical contacts require a minimum wetting current (typically 10 mA) to reliably break through microscopic surface oxidation over long periods of operation.

Q2: What happens if an output circuit demands more than the 5 A peak inrush rating?

A2: Exceeding the inrush parameters can cause contact arcing, which may pit or weld the physical relay contacts closed. For large loads or motor coils with severe surge cycles, use this module to switch an external interposing contactor.

Q3: Why is the module's response time listed at 15 ms compared to electronic solid-state cards?

A3: Solid-state cards switch using transistors or triacs almost instantly, whereas the IC693MDL930 relies on physical mechanical movement to snap the relay arm into place, which requires a brief 15 ms activation delay.