GE IC693MDL240G Input Module

Technical Specifications and Input Design

This input module interfaces with 120V AC field devices for Series 90-30 PLC systems. The GE IC693MDL240G reads signals from limit switches, pushbuttons, and proximity sensors. You can install this unit in any standard 90-30 I/O rack slot. Its rugged design handles industrial electrical noise without false triggering. The module weighs approximately 0.34 kilograms. Its dimensions measure 12.5 cm in height, 5.5 cm in width, and 11 cm in depth.

Parameter	Specification
Brand	GE Fanuc Automation
Model	IC693MDL240G
Category	Input Module / AC Discrete Input Unit
Weight	0.34 kg
Height	12.5 cm
Width	5.5 cm (single slot)
Depth	11 cm
Number of Inputs	8 points
Input Voltage Range	85-132V AC (47-63 Hz)
Input Type	AC optocoupler isolated
Input Current per Point	12 mA typical at 120V AC
Minimum ON Voltage	74V AC
Maximum OFF Voltage	20V AC
Response Time (ON to OFF)	30 milliseconds maximum
Response Time (OFF to ON)	30 milliseconds maximum
Isolation Voltage	1500V AC between field and logic
Energy Storage	None (no battery or capacitors)
Component Count	Single PCB with 8 optocoupler circuits

Wiring and Group Configuration

The module divides its eight inputs into two isolated groups of four. Each group shares a common AC return terminal. You can connect different AC phases to each group safely. The GE IC693MDL240G uses a removable terminal strip for field wiring. This terminal strip accepts wire sizes from 0.2 to 2.5 square millimeters. Each input point includes a green LED status indicator. This LED lights when the input detects a valid AC signal level.

Signal Processing and Noise Filtering

The input circuits include built-in filtering for AC line noise rejection. Each channel requires at least 74V AC to register an ON condition. The module uses an optocoupler for complete electrical isolation. Consequently, the backplane logic remains safe from high-voltage faults. The inputs respond within 30 milliseconds to any voltage change. This response time filters out short-duration line transients effectively. The module operates perfectly with standard 120V AC control transformers.

Installation and Operational Guidelines

You must insert this module into any standard 90-30 I/O slot position. The backplane supplies 5V DC power to the optocoupler circuits. The module draws approximately 120 mA from this backplane supply. It stores no input states when you remove system power. Therefore, the CPU receives fresh input data after each power-up cycle. You should verify the applied voltage stays below 132V AC. Exceeding this limit will permanently damage the input circuits.