IC694MDL660 3 IC694MDL660 4 IC694MDL660 2 IC694MDL660 5

The GE IC694MDL660 is a high-density 24 VDC discrete input module engineered for GE Fanuc PACSystems RX3i programmable logic controller systems. It provides 32 isolated discrete input channels organized into four groups of eight, and supports both positive and negative logic signal wiring. With selectable input filtering and robust optical isolation, this module reliably captures field-level digital signals — such as those from proximity switches, sensors, and pushbuttons — and converts them into logic states for PLC processing in industrial automation environments.

Technical Specifications

Specification	Details
Module Type	32-Point Discrete Input Module
Compatible PLC Series	GE Fanuc PACSystems RX3i
Number of Inputs	32 discrete inputs (4 isolated groups of 8)
Logic Type	Positive / Negative Logic Supported
Rated Voltage	24 VDC
Input Voltage Range	0 – 30 VDC
Input Current	~7.0 mA per point (typical)
On-State Voltage	11.5 – 30 VDC
Off-State Voltage	0 – 5 VDC
Input Filter Times	Selectable (0.5 ms to 100 ms)
Isolation (Field-to-Backplane)	250 VAC continuous; 1500 VAC 1 min
Isolation (Group-to-Group)	250 VAC continuous; 1500 VAC 1 min
Power Consumption	~300 mA @ 5 VDC (all inputs ON)
Status Indicators	LED per input point for ON/OFF visualization
Mounting	Standard PLC I/O rack/backplane slot
Operating Temp.	0 °C to +60 °C
Storage Temp.	–40 °C to +85 °C
Dimensions (L×W×H)	145 × 34 × 140 mm (approx.)
Weight	~0.23 kg (approx.)

The 32-point design and selectable input filter times allow this module to operate flexibly in systems requiring rapid or noise-filtered signal acquisition.

Recommended Related Modules

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GE IC694PWR330 – High-Capacity Power Supply Module
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GE IC694ALG392 – 8-Channel Analog Output Module

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Applications

The IC694MDL660 is commonly used in industrial automation systems for high-density discrete signal monitoring and integration into control logic:

Monitoring sensors, switches, and interlocks in production lines
Capturing digital feedback from conveyors, safety systems, and machinery
Distributed I/O systems with centralized PLC logic
Manufacturing automation requiring scalable and reliable input collection
Process control panels handling large numbers of field inputs

Selectable input filtering enhances noise immunity and reduces false detections in electrically noisy environments.

Advantages

High-density input capability — 32 points in a single module
Positive/negative logic support increases wiring flexibility
Selectable filter times tailor performance to application needs
Robust optical isolation protects logic from field transients
Individual input LEDs simplify troubleshooting and diagnostics
Compact design fits standard RX3i I/O backplane slots

This combination makes the IC694MDL660 suitable for demanding industrial environments where reliable and flexible input acquisition is critical.

Technical FAQs

What type of inputs does the IC694MDL660 support?
It supports 32 discrete 24 VDC inputs with positive or negative logic levels.
How are the inputs organized?
Inputs are arranged in four isolated groups of eight each.
What voltage range can the module accept?
It accepts 0 – 30 VDC input signals.
Can the input response time be adjusted?
Yes — filter times from 0.5 ms to 100 ms are selectable.
Is isolation provided?
Yes — optical isolation is provided between field and backplane (1500 VAC rating) and between input groups.
Does it provide status indication?
Each input point has an LED that indicates its ON/OFF status.
What power does it draw?
It typically draws ~300 mA @ 5 VDC from the PLC backplane when all inputs are ON.
Where can this module be installed?
In any compatible I/O slot of a PACSystems RX3i rack.
Is it suitable for noisy environments?
Yes — selectable input filtering and optical isolation help improve noise immunity.
What environments is it designed for?
Industrial automation environments with standard operating temperature up to 60 °C.