Schneider Electric TM3DI32K Discrete Input Module

Schneider Electric's TM3DI32K is a 32-channel discrete input expansion module for Modicon TM3 controllers, delivering 24 V DC digital inputs via HE10 terminals. Designed to extend the TM3 I/O bus, it provides 32 independent inputs that monitor standard 24 V DC field signals from sensors, switches, and other digital devices connected through the HE10 terminal array. The TM3DI32K is compatible with the TM3 family and supports use with popular Modicon controllers such as M262, M221, M251, and M241, enabling scalable automation architectures without replacing the main controller. By consolidating a large number of input points in a single expansion module, it simplifies panel wiring and reduces the complexity of wiring back to the host PLC. When integrated into a TM3-based control system, the TM3DI32K feeds the host PLC with real-time binary states, allowing the PLC program to respond to process changes, detect fault conditions, and coordinate sequencing across multiple machines or lines. This 24 V DC input module is a standard digital I/O option for industrial automation projects relying on Schneider Electric's Modicon TM3 ecosystem, providing reliable input sensing across diverse environments.