IC694MDL645D 3

The GE IC694MDL645 is a dependable 16-point discrete input module designed for GE Fanuc PACSystems RX3i and compatible Series 90-30 PLC systems. Built for industrial automation environments, this module accepts 24 VDC logic signals with support for both positive and negative logic wiring, allowing flexible connection of a wide range of field devices such as pushbuttons, limit switches, and proximity sensors. With optical isolation and individual status LEDs for each input point, the IC694MDL645 delivers reliable signal acquisition and clear diagnostics for demanding control applications.

Technical Specifications

Specification	Details
Module Type	24 VDC Discrete Input Module
Compatible PLC Series	GE Fanuc PACSystems RX3i & Series 90-30
Number of Inputs	16 discrete inputs
Nominal Voltage	24 VDC
Input Voltage Range	0 – 30 VDC
Input Current	~7 mA per channel (typical)
On-State Voltage	11.5 – 30 VDC
Off-State Voltage	0 – 5 VDC
Response Time	~7 ms (typical ON/OFF)
Logic Type	Positive / Negative Logic (wiring selectable)
Isolation	250 VAC field-to-backplane; 1500 VAC for 1 min
Power Consumption	80 mA @ 5 VDC, 125 mA @ 24 VDC
Status Indicators	16 Green LEDs (one per input)
Operating Temp.	0 °C to +60 °C
Storage Temp.	–40 °C to +85 °C
Mounting	Standard PLC I/O rack/backplane slot
Dimensions (L×W×H)	130 × 25 × 150 mm (approx.)
Weight	~0.34 kg (0.75 lb) (approx.)

This module is recognized as a low-voltage input module (often identified by a blue band on the label) and can be installed in any compatible RX3i or Series 90-30 I/O slot without special restrictions.

Recommended Related Modules

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GE IC693DSM314 – High-density discrete output module

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Applications

The IC694MDL645 is widely used in industrial automation systems where 24 VDC field signals must be reliably conveyed to PLC logic:

Capturing status from safety devices, switches, and sensors
Integrating machine conditions into centralized control logic
Monitoring discrete inputs in manufacturing lines
Supporting distributed I/O architectures in modular control systems
Logic input acquisition for process and factory automation

With its flexible positive/negative logic wiring and clear per-channel status LEDs, this module simplifies both system design and troubleshooting.

Advantages

16 discrete input points for dense signal acquisition
Positive/Negative logic support for flexible field wiring
Optical isolation enhances noise immunity and protects system logic
Individual status LEDs provide immediate feedback per channel
Low power consumption minimizes system energy use
Compatible with RX3i and Series 90-30 racks for seamless integration

The IC694MDL645 combines robust electrical performance and practical diagnostics, making it ideal for a wide range of industrial control applications.

Technical FAQs

What signal type does IC694MDL645 support?
It supports 24 VDC discrete input signals in the range 0–30 VDC.
How many input channels are available?
There are 16 discrete input points in one group.
Does it support positive and negative logic?
Yes — wiring can be configured for positive or negative logic.
What is the typical input response time?
Approximately 7 ms for both ON and OFF transitions.
Is isolation provided between field inputs and PLC logic?
Yes — optical isolation rated at 250 VAC field-to-backplane.
How is power supplied to the module?
It draws logic power from the PLC backplane and an external 24 VDC field supply.
Does each input have a status indicator?
Yes — there are 16 green LEDs (one per input) for quick visual status.
Can this module be hot-swapped?
Typically no — ensure safe practice and consult system guidelines before servicing.
Which PLC platforms is this compatible with?
Designed for RX3i PACSystems and compatible with Series 90-30 when installed appropriately.
What environmental range does it support?
Operating from 0 °C to 60 °C and storage from –40 °C to 85 °C.