Schneider Electric 170ADI34000 Base Unit

Schneider Electric 170ADI34000 Base Unit is a Modicon Momentum discrete input solution that combines a 16-channel 24 V DC input module with its base, delivering 16 sink-type digital inputs for 24 V sensors and switches in a compact Modicon Momentum package. This base-and-module assembly is designed for Momentum PLCs within the Modicon Edge I/O family, and it supports 1/2/3-wire wiring per input for flexible field connections such as pushbuttons, limit switches, and proximity sensors. By providing 16 inputs in a single base unit, it simplifies installation and maintenance while ensuring reliable digital signaling to the controller. The 170ADI34000 is scheduled for discontinuation on December 1, 2027, with standard service ending December 31, 2035; Schneider Electric lists a replacement option built around the NTSDDI1602XK discrete input configuration for a like-for-like upgrade path. This configuration makes it straightforward to expand a Momentum system’s digital input capacity while preserving compatibility with existing cabling and mounting schemes.