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The GE IC697MDL640 is a high-density discrete input module for the GE Fanuc Series 90-70 PLC system. It is designed to acquire field digital signals (ON/OFF) from industrial devices such as switches, pushbuttons, proximity sensors, and limit switches, and transmit them to the PLC CPU for processing.

This module is widely used in industrial automation systems requiring DC input signal acquisition with flexible logic (positive/negative) and high electrical isolation.

Technical Specifications

The IC697MDL640 is a 32-point DC input module with group isolation.

Parameter	Specification
Model	IC697MDL640
Product Type	Discrete Input Module
Series	GE Fanuc Series 90-70
Input Type	DC Digital Input
Number of Inputs	32 points
Input Configuration	4 groups of 8 points
Rated Voltage	10–30 VDC (commonly 24 VDC systems)
Logic Type	Positive / Negative logic selectable
Input Current	~5–7 mA typical
Input Filter	~1 ms / 10 ms selectable (varies by revision)
Isolation	1500 VAC (input to backplane), group isolated
Backplane Current	~0.3 A @ 5 VDC
Wiring	Removable terminal block
Indicators	LED per input channel
Slot Requirement	Single-slot module

Applications

This module is commonly used in:

Manufacturing automation systems
Packaging machinery
Conveyor and material handling systems
Machine control panels
Power plant auxiliary systems
Water treatment systems
Process control and SCADA systems

Advantages

32 DC inputs in a compact module
Supports both positive and negative logic wiring
Strong noise immunity and industrial isolation
Flexible configuration (sourcing/sinking compatibility)
LED diagnostics for fast troubleshooting
Stable long-term industrial operation
Easy integration into GE 90-70 PLC systems
Widely used in modernized retrofit systems

Technical FAQs

1. What is IC697MDL640 used for?
It is used to read DC digital input signals into a PLC system.

2. How many inputs does it have?
32 DC inputs arranged in 4 isolated groups of 8 points.

3. What voltage does it support?
Typically 10–30 VDC (24 VDC nominal systems).

4. Is it AC or DC module?
It is a DC input module.

5. Does it support both wiring types?
Yes, it supports positive (sourcing) and negative (sinking) logic.

6. What is the input delay?
Selectable filtering (typically 1 ms or 10 ms depending on revision).

7. What industries use it?
Manufacturing, power generation, water treatment, and industrial automation.

8. Is it still used today?
Yes, mainly in GE 90-70 legacy systems and retrofit projects.

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GE IC697MDL640 Input Module

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