GE Fanuc IC694MDL655 | 32-Point 24VDC Discrete Input Module

The IC694MDL655 is a high-density discrete input module designed for the PACSystem RX3i platform by Emerson Automation, previously produced by GE Intelligent Platforms. This module supports 24VDC positive/negative logic and offers 32 digital input channels in a compact configuration. It is ideal for interfacing with binary devices like switches, proximity sensors, and photosensors.

Key Features

32 Digital Input Channels: The IC694MDL655 provides 32 input channels, grouped into 4 sets of 8 channels, to efficiently handle a large number of inputs.
Flexible Logic Configuration: The module supports both positive and negative logic wiring, making it adaptable to various application requirements.
Wide Input Voltage Range: It accepts an input voltage range of 0-30 VDC with a nominal voltage of 24 VDC and a current of 7 mA at rated voltage.
Fast Response Time: The module offers a fast response time of 2 ms for both ON and OFF states.
High Isolation: With an isolation rating of 250 VAC continuous and 1500 VAC for 1 minute, the module ensures robust protection between channels, backplane, and ground.

Technical Specifications

Specification	Value
Manufacturer	GE Fanuc Emerson
Product Line	PACSystem RX3i
Part Number	IC694MDL655
Weight	0.56 lbs (0.26 kg)
Module Type	High-density Discrete Input Module
Number of Channels	32
Channels per Group	8
Logic Configuration	Positive/Negative Logic
Input Voltage Range	0-30 VDC
Rated Input Voltage	24 VDC
Input Current	7.0 mA at rated voltage
On-State Voltage	11.5 to 30.0 VDC
Off-State Voltage	0-5 VDC
On-State Current	3.2 mA
Off-State Current	1.1 mA maximum
Response Time (On and Off)	2 ms maximum
Maximum Current Draw (5V Bus)	195 mA
Typical Current Draw (24V Bus)	224 mA
Isolation	250 VAC continuous, 1500 VAC (1 minute)
Connector Type	2 male 24-pin connectors
Cable Length	30 meters
Product Lifecycle Status	Active

Overview

The IC694MDL655 is designed to meet the needs of complex automation applications where a high number of discrete inputs are required. This high-density module supports up to 32 input points, divided into 4 groups with 8 channels each. It is perfect for connecting to a range of binary input devices, such as push buttons, limit switches, auxiliary contacts, and sensors.

The module’s positive/negative logic configuration makes it versatile for use in regions where different logic standards are prevalent. In positive logic, the positive wire is connected to the module’s input channel, while the negative logic wiring reverses this configuration.

Installation of the IC694MDL655 is straightforward, as it directly mounts onto an empty slot in the PACSystem RX3i backplane, either in a local rack or distributed I/O station. However, the number of modules you can install is limited by the memory capacity of the processor or the available slots in the baseplate.

The IC694MDL655 offers high isolation between groups of channels, ensuring that each group can be wired independently according to the specific needs of the application. Its 250 VAC continuous isolation ensures robust protection, making this module reliable for critical industrial environments.

Applications

The IC694MDL655 is ideal for:

Industrial automation systems requiring 32 discrete inputs.
On/Off control devices such as limit switches, auxiliary contacts, and proximity sensors.
High-density input configurations in applications such as machine control, safety systems, and process monitoring.
Systems where positive and negative logic wiring flexibility is required.