General Electric IC670MDL644 Field Control Discrete Input Module

Description

The General Electric IC670MDL644 is a 16-point, 24VDC discrete fast input module designed for the GE Field Control distributed I/O system. This module provides a single group of 16 inputs capable of operating with either positive or negative logic, offering flexibility for various field device configurations. It utilizes optoisolators to provide robust isolation between field inputs and the internal logic components, ensuring reliable signal processing in industrial environments.

Features

• 16 discrete inputs in a single group.
• Supports both positive and negative logic (source/sink).
• Fast input response: 25µs typical ON response.
• Integrated status LEDs for each of the 16 inputs and a dedicated PWR indicator for power supply monitoring.
• Isolation: 250 VAC continuous user input to logic; 1500 VAC user input to frame ground for 1 minute.
• Requires external 24 VDC power supply for field input devices.

Applications

• Automotive manufacturing assembly lines and quality control checkpoints.
• Oil, gas, and petrochemical facilities for monitoring valve positions and field status.
• High-speed food and beverage production lines requiring fast signal throughput.
• Water treatment and utility infrastructure for monitoring pump stations and environmental equipment.

Technical Specifications

Installation Guidelines

• Ensure the system power is disconnected before installing or removing the module.
• To install, tilt the I/O terminal block and hook the rear tabs over the top of the DIN rail.
• Pivot the block downward until the spring-loaded latches click securely into place.
• Tighten the DIN rail clamp screw to prevent lateral movement.
• Use shielded cabling for field inputs to minimize EMI interference in high-noise industrial environments.
• Maintain adequate ventilation around the module to ensure proper thermal dissipation.

FAQs

What is the GE IC670MDL644?

The IC670MDL644 is a 16-point, 24VDC positive/negative logic fast input module used within the GE Field Control distributed I/O system.

How do I wire the IC670MDL644?

The module supports both positive (source) and negative (sink) input logic. The 16 points share a common terminal, allowing for flexible connection to sensors that switch either to common (0V) or to the +24V supply.

What is the response time of this module?

This is classified as a fast input module with a typical ON response time of 25µs and a maximum of 60µs.

Does the module provide its own power?

No, while the module draws logic power (approx. 80mA) from the Bus Interface Unit, an external 24VDC power supply is mandatory to power the field input devices.