GE Fanuc IC697MDL940 Series 90-70 16-Channel Relay Output Module

Product Overview

The GE Fanuc IC697MDL940 is a versatile 16-channel relay output module engineered for the Series 90-70 Programmable Logic Controller system. This module provides a flexible interface between the PLC backplane and external field devices, utilizing a combination of eight Form C (Normally Open/Normally Closed) and eight Form A (Normally Open) contacts. Designed for high reliability in complex switching applications, the IC697MDL940 supports a wide range of voltages, making it an essential component for controlling motors, valves, and indicators in diverse industrial settings.

Technical Specifications

Core Technical Advantages

Mixed Contact Configuration

The IC697MDL940 distinguishes itself by offering both Form A and Form C relay types within a single module slot. This hybrid design allows engineers to handle both basic switching and changeover logic simultaneously, reducing the total number of modules required in the PLC rack.

Superior Inrush Handling

Built to survive the demands of inductive loads, the module features silver-alloy contacts capable of managing an inrush current of up to 15A for 50ms. This ensures long-term contact durability when driving solenoids or small motor starters that exhibit high initial current spikes.

High-Voltage Isolation Protection

To protect the sensitive Series 90-70 CPU and backplane, the IC697MDL940 provides 1500V isolation. This barrier prevents field-side electrical surges from migrating to the control logic, significantly increasing overall system uptime and safety.

Installation & Maintenance

• Mechanical Keying: Utilize the module's unique keying feature to prevent accidental insertion into the wrong rack slot during field maintenance.
• Fuse Protection: Each channel is protected by a 3A fuse. Always verify field load requirements do not exceed the 2.0A continuous rating to prevent nuisance blowing.
• Contact Lifespan: For high-frequency switching (exceeding 20 cycles per minute), consider external snubbers for inductive loads to extend the silver-alloy contact life beyond the standard 90,000-hour MTBF.

Engineering Advantages

The IC697MDL940 is optimized for rugged environments, maintaining full functionality across an operating temperature range of –25°C to 70°C. Despite its lightweight design of only 150 g, the module is built for industrial resilience. Its low internal power dissipation (5.5W) minimizes heat buildup within the PLC enclosure, while the 10mA minimum load capability ensures compatibility with modern electronic relay coils.

Technical FAQs

Q1: Can I mix AC and DC voltages on the same IC697MDL940 module?
A1: Yes. Relays are dry contacts, meaning you can switch different voltages on different channels, provided you observe group load limits and ensure proper wiring isolation between circuits.

Q2: What is the difference between Form A and Form C contacts on this module?
A2: The module provides 8 Form A contacts (Normally Open) and 8 Form C contacts (Single Pole Double Throw). Form C contacts provide both a Normally Open and a Normally Closed terminal for every common wire.

Q3: Is this module hot-swappable?
A3: Standard Series 90-70 procedures require the system power to be off when removing or inserting modules to prevent backplane arcing and ensure data integrity.