GE IC200ALG620-EB RTD Module

This RTD input module measures temperature directly from resistance sensors. It accepts three-wire or four-wire RTD connections for high accuracy. You can install this unit into any VersaMax I/O station slot. The module suits HVAC, process control, and machine thermal monitoring applications.

Technical Specifications & Key Parameters

Parameter	Detail
Product Model	GE IC200ALG620-EB
Category	Analog Input RTD Module
Dimensions (H x W x D)	140 mm x 35 mm x 110 mm
Weight	0.23 kg (0.51 lbs)
Number of Channels	6 RTD input channels
Supported RTD Types	Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Cu10
Wiring Configuration	3-wire or 4-wire (channel selectable)
Temperature Range	-200°C to +850°C (Pt100)
Resolution	0.1°C (16 bits analog-to-digital)
Accuracy	±0.5°C at 25°C, ±1.0°C over full range
Excitation Current	0.5 mA constant current per channel
Lead Resistance Rejection	90 dB for 3-wire configuration
Conversion Speed	100 ms per channel (600 ms for all six)
Energy Storage	220 µF capacitor (holds last value for 10 ms)
Backplane Current Draw	200 mA at 5V DC
Terminal Interface	Removable 18-pin screw connector

Detailed Feature Overview

GE IC200ALG620-EB provides six dedicated RTD input channels for temperature measurement. This module supports all common RTD types including Pt100 and Ni120. Each channel delivers a constant 0.5 mA excitation current to the sensor. Consequently, you do not need external signal conditioners or transmitters.

The module achieves 0.1°C resolution using a 16-bit analog-to-digital converter. Three-wire configuration rejects 90 dB of lead resistance error. This feature ensures accurate readings even with long cable runs up to 200 meters. A 220 µF capacitor stores energy for brief power interruptions. It holds the last valid temperature value for 10 milliseconds.

Channel Configuration and Flexibility

You can mix different RTD types across the six channels independently. Each channel also accepts either 3-wire or 4-wire sensor connections. The module automatically detects open sensor conditions. A red LED flags any broken wire or disconnected RTD. Moreover, the unit includes built-in cold junction compensation for reference accuracy.

Installation and Calibration

This module draws only 200 mA from the VersaMax backplane supply. Its lightweight 0.23 kg design simplifies mounting in any rack slot. The removable terminal block accepts 16–22 AWG copper wire. Use shielded cable for all RTD connections to minimize electrical noise. Software calibration eliminates manual potentiometer adjustments entirely. Operating temperature ranges from 0°C to 60°C reliably. Keep humidity below 95% without condensation for long life.