Schneider Electric TWDDDI16DT Digital Input Expansion Module

Schneider Electric TWDDDI16DT is a 16-channel digital input expansion module for the Twido control platform, designed to extend a Twido controller’s input capacity via the TM3 expansion bus. It provides 16 discrete digital inputs that accept 24 V DC signals and wires to the field using a removable screw-terminal block. This expansion module is compatible with Schneider Electric’s TM3/Twido family, enabling scalable I/O in automation setups such as conveyors, packaging lines, and machine tools where 24 V DC sensors, switches, and proximity devices are read by the controller. The TWDDDI16DT occupies a TM3 backplane slot and presents 16 input channels to the host controller through the TM3 interface, with screw-terminal field wiring for each channel. By adding this 16-input module, a Twido system can expand digital input density without replacing the main controller, supporting straightforward configuration of input-driven logic and safety interlocks in industrial automation.