General Electric IC670MDL640 Field Control Output Module

Technical Overview

The General Electric IC670MDL640 functions as a high-performance discrete output module within the GE Field Control I/O station family. This module serves as the primary interface for driving field-mounted devices by converting low-level logic commands from the controller into high-power electrical signals. Because this unit provides 16 isolated output points, it allows for the simultaneous control of multiple actuators, such as solenoids, motor starters, and indicator lamps. Furthermore, its modular design enables engineers to mount it on various Field Control Bus Interfaces, including Genius, PROFIBUS, and Ethernet.

Operational Logic and Circuit Protection

The IC670MDL640 manages electrical loads by utilizing solid-state switching technology, which significantly increases the lifespan of the module compared to mechanical relays. To ensure consistent operation, the module operates at a nominal voltage of 24 Vdc and supports a maximum current of 0.5 Amps per point. Moreover, the hardware incorporates internal electronic short-circuit protection. Consequently, if a field wiring fault occurs, the module automatically disables the affected output to prevent damage to the internal circuitry.

In addition to these protective features, the IC670MDL640 utilizes optical isolation to bridge the gap between the field-side power and the logic-side backplane. This isolation prevents high-voltage transients from reaching the expensive central processing unit. Furthermore, the unit features a “failed state” configuration option, which allows technicians to pre-determine whether outputs should turn off or hold their last state during a loss of communication. As a result, the module provides a predictable and safe response during system failures.

Key Technical Characteristics

• Manufacturer: General Electric
• Model Number: IC670MDL640
• Product Series: Field Control I/O
• Module Type: Discrete Output
• Output Points: 16 Points
• Rated Voltage: 24 Vdc
• Output Current: 0.5 Amps per point (maximum)
• Response Time: 2.0 ms (typical)
• Isolation: 1500 Vac between field and logic circuitry
• Indicators: 16 Individual LED status lights for output activity

Primary Applications

• Activating solenoid valves for pneumatic or hydraulic control systems.
• Controlling contactors and motor starters in industrial pumping stations.
• Managing indicator light panels and audible alarms in factory environments.
• Driving relay coils for interposing logic in power distribution cabinets.
• Integrating field-level actuators into a centralized DCS or PLC network.