Schneider Electric TM3DI32K Discrete Input Module

Schneider Electric's TM3DI32K is a 32‑channel discrete input expansion module for the Modicon TM3 system, delivering 24 VDC digital inputs to compatible M2xx PLCs. It provides two groups of 16 inputs, each with its own common line on two pins, and supports Type 1 (IEC/EN 61131‑2) input circuits with sink or source logic. Each channel is rated for 24 VDC with an input range of 19.2 to 28.8 VDC and a maximum input current of 5 mA, enabling reliable reading of standard industrial sensors. The TM3DI32K is designed for use as an I/O extension with Schneider's Modicon TM3 controllers and is compatible with Modicon M2xx PLCs, including M221, M241, M251, and M262 families, to expand digital I/O capabilities. Connectivity is via HE10 interfaces, and programming and diagnostics can be performed using EcoStruxure Machine Expert. Typical applications include reading digital signals from limit switches, proximity sensors, door interlocks, and other 24 VDC devices in manufacturing, packaging, conveyance, and process-control panels. This module supports consistent electrical characteristics across all 32 channels and simplifies wiring with dual 16‑channel groups and independent commons, making it suitable for scalable automation projects that require reliable, point‑to‑point DI information fed into the TM3 ecosystem.