GE IC693MDL645C Analog Input Module

This module converts analog field signals into digital values for GE Series 90-30 PLCs. It accepts voltage or current inputs from sensors and transmitters. Therefore, it enables precise process monitoring in industrial automation systems.

Technical Specifications of GE IC693MDL645C

The GE IC693MDL645C measures 12.5 cm in length and 9.0 cm in width. Its module weight equals approximately 0.28 kg for straightforward rack mounting. A single 20-pin removable terminal block handles all field wiring connections. Additionally, the module provides eight independent analog input channels.

Parameter	Specification
Brand	General Electric (GE)
Full Model	IC693MDL645C
Category	Analog Input Module
Dimensions (L x W x H)	12.5 cm x 9.0 cm x 5.5 cm (4.92″ x 3.54″ x 2.17″)
Module Weight	0.28 kg (0.62 lbs)
Primary Interface	1 x 20-pin Removable Screw Terminal Block
Analog Input Channels	8 Single-Ended Channels
Input Signal Range (Voltage)	0 to +10 VDC, -10 to +10 VDC
Input Signal Range (Current)	0 to 20 mA, 4 to 20 mA (with External Resistor)
Resolution (Voltage Mode)	12 Bits (0 to 4095 Counts)
Resolution (Current Mode)	12 Bits (0 to 4095 Counts with 250Ω Resistor)
Conversion Type	Successive Approximation (SAR)
Conversion Speed	5 ms per Channel (40 ms for All 8 Channels)
Input Impedance (Voltage)	200 kΩ (Typical)
Input Impedance (Current)	250 Ω (with External Resistor)
Absolute Accuracy	±0.5% of Full Scale at 25°C
Absolute Accuracy Drift	±0.02% per °C
On-Board Components	1 ADC Chip + 8 Signal Conditioning Circuits + 4 Protection Diodes
Energy Storage	2 x 10 µF Tantalum Capacitors (25V)
Operating Voltage	+5 VDC from Backplane (120 mA Typical)
Isolation Rating	None (Non-Isolated, Field to Logic Common)
Common Mode Range	±10 VDC Maximum
Operating Temperature	0°C to +60°C (32°F to 140°F)
Mounting Type	Series 90-30 PLC Rack

Energy Storage and Signal Conditioning

The GE IC693MDL645C stores energy using two tantalum capacitors. These capacitors filter power supply noise for stable ADC operation. Each channel includes protection diodes against input overvoltage conditions. Consequently, this module survives accidental connections up to ±30 volts DC.