Schneider 140ARI03000C RTD Input Module for Modicon Quantum PLCs

The Schneider 140ARI03000C measures temperature directly from RTD sensors. You can install this module into any standard Quantum rack slot. It accepts three-wire or four-wire RTD connections for high accuracy. This module suits HVAC, process control, and industrial monitoring applications.

Technical Specifications and Hardware Layout

The Schneider 140ARI03000C measures 138 mm in height. Its width reaches 54 mm, and the depth equals 145 mm. The Schneider 140ARI03000C weighs approximately 0.36 kilograms. A single internal PCB holds all signal conditioning and conversion circuits. The module contains no energy storage capacitors or batteries. One 48-pin front connector handles all field wiring connections. Four RTD input channels provide temperature measurement for Pt100 sensors. Four green LEDs display channel activity and fault status.

Input Specifications and Performance

The Schneider 140ARI03000C accepts Pt100 RTD sensors with alpha = 0.00385. It provides automatic lead resistance compensation for three-wire connections. The module delivers a 16-bit digital resolution for precise temperature readings. Accuracy stays within 0.2 percent of full scale at 25°C. Consequently, this module captures process temperatures with excellent repeatability. Each channel includes configurable filtering for noise rejection. The module provides sensor burnout detection for fault diagnosis. Optical isolation separates the field side from the backplane logic.

Installation and Calibration Guidelines

You must insert the Schneider 140ARI03000C firmly into a standard Quantum rack slot. Transitioning to wiring, use twisted-pair shielded cables for optimal signal integrity. The module automatically detects open-circuit or short-circuit sensor conditions. Four front LEDs show power, channel activity, and fault status clearly. For calibration, simply adjust the offset parameter in the PLC software. The operating temperature range spans from 0°C to 60°C reliably.