Schneider 140DAI55300C Discrete Input Module for Quantum PLCs

The Schneider 140DAI55300C captures thirty-two discrete signals from field devices. You can install this module directly into any Quantum rack slot. It accepts 24 V DC signals from sensors and limit switches. This module suits factory automation and process control applications.

Technical Specifications and Hardware Layout

The Schneider 140DAI55300C measures 138 mm in height. Its width reaches 54 mm, and the depth equals 145 mm. The Schneider 140DAI55300C weighs approximately 0.32 kilograms. A single internal PCB holds all input filtering and isolation circuits. The module provides thirty-two channels for 24 V DC sinking inputs. It stores no energy in capacitors or internal batteries. One 48-pin front connector handles all field wiring connections. Thirty-two green LEDs display the real-time status of each channel.

Input Specifications and Electrical Performance

The Schneider 140DAI55300C accepts input voltages from 0 V to 30 V DC. It recognizes a logic “1” at 15 V DC or higher. A logic “0” occurs below 5 V DC reliably. Each channel draws a typical input current of 6 mA at 24 V DC. The module groups the thirty-two channels into four isolated blocks of eight. Consequently, each group can connect to a different reference potential. Optical isolation separates each group from the backplane logic. An internal RC filter debounces input signals with a 2 ms time constant.

Installation and Practical Application Tips

You must insert the Schneider 140DAI55300C firmly into a standard Quantum rack slot. Transitioning to wiring, use 0.5 mm² to 1.5 mm² stranded copper wire. The screw-type terminals require a 3 mm flathead screwdriver for tightening. For high-noise environments, use shielded cables for all input signals. The operating temperature range extends from 0°C to 60°C reliably. This module consumes only 60 mA from the backplane bus.