Schneider Electric 140-DDI-353-00 TSX Quantum Module

Schneider Electric 140-DDI-353-00 TSX Quantum discrete input module provides 32 digital inputs at 24 V DC for Modicon Quantum PLCs, arranged as four 8-point blocks. The 140 DDI 353 00 is a 4x8 sink input module, intended for use with a shared input common wired to a positive potential, and accepts 24 VDC field signals that map into the CPU’s input words. This part number—140DDI35300—was discontinued on December 31, 2022, and Schneider Electric lists BMXDDI3202K as the recommended replacement in the X80 family, offering 32 inputs at 24 V DC with a positive-common configuration. Typical applications include wiring 24 VDC field devices such as pushbuttons, limit switches, and proximity sensors to monitor and control machinery in TSX Quantum installations, providing scalable digital input coverage for ladder or function‑block logic. In a Quantum rack, the module plugs into the backplane and presents a 32-channel input interface that can be addressed within the standard Quantum I/O addressing scheme, enabling straightforward expansion of I/O without adding external electronics. As part of the Modicon Quantum family, 140‑DDI‑353‑00 integrates with the Quantum backplane ecosystem and shares the same modular approach to I/O expansion.