GE IC693MDL241C Input Module | 16 Points, 24 VDC, 560 µF

This input module captures 24 VDC signals from factory floor devices. It sends these digital states to a Series 90-30 PLC processor. The GE IC693MDL241C works with pushbuttons, limit switches, and photoelectric sensors. You can install this unit in any Series 90-30 I/O rack slot.

Technical Parameters Overview

Parameter	Specification
Model Number	IC693MDL241C
Category	Input Module
Brand	GE (General Electric)
Unit Weight	0.31 kg (0.68 lbs)
Dimensions (H x W x D)	120 mm x 30 mm x 110 mm
Number of Input Points	16 points (single group)
Input Type	24 VDC positive logic
Component Count	78 discrete components
Energy Storage	560 µF across 2 capacitors
Input Voltage Range	10-30 VDC
Input Current per Point	7 mA typical
Input Impedance	3.4 kΩ
On-State Threshold	Above 15 VDC
Off-State Threshold	Below 5 VDC
Backplane Current Draw	150 mA at 5 VDC

Input Channel Architecture

Furthermore, the GE IC693MDL241C provides sixteen independent input channels. All sixteen points share a common return connection. LED indicators sit directly above each input terminal. These LEDs illuminate when the input detects a valid on-state signal. Therefore, technicians can verify field device operation without a multimeter.

Signal Detection and Threshold Logic

This module uses three components to process each input signal. A series resistor limits current to 7 milliamperes. An optocoupler provides isolation between field and logic circuits. A Schmitt trigger circuit establishes clean switching thresholds. The GE IC693MDL241C turns on above 15 VDC input voltage. It turns off when voltage drops below 5 VDC. Consequently, noisy signals near 10 VDC will not cause false triggering.

Energy Storage and Noise Immunity

For stable operation, two capacitors store 560 µF of total energy. One 330 µF capacitor filters the input power rail. The other 230 µF capacitor supports the optocoupler outputs. This storage absorbs voltage dips from nearby contactor coils. Meanwhile, the GE IC693MDL241C ignores electrical interference up to 1 kV. You will see reliable input readings even in variable frequency drive panels.

Component Layout and Thermal Design

Moreover, 78 discrete components populate a single four-layer PCB. The board includes sixteen optocouplers arranged in two rows. A ground plane layer reduces electromagnetic emissions from the module. The GE IC693MDL241C requires no forced air cooling for normal operation. Passive convection through ventilation slots removes any heat. The module runs cool even with all sixteen inputs energized simultaneously.

Installation and Field Wiring Guidelines

You can insert this module into any Series 90-30 I/O slot. A plastic latch secures the unit to the rack chassis. For field wiring, use a removable 20-pin terminal block (model IC693TBM001). Each input requires one wire for the signal connection. A common return wire serves all sixteen input points. Use 16 AWG to 22 AWG copper conductors for all field terminations.