Schneider Electric P0400YN Expansion Input Module

Schneider Electric P0400YN Expansion Input Module is a 12-channel, 120 VAC input expansion card designed to attach to Foxboro FBM controllers, increasing the number of monitored field signals without replacing existing I/O. It is identified as an expansion I-module (PP1) and carries part number P0400YN. Each of the twelve inputs is powered by 120 VAC, enabling direct connection to common field devices such as sensors and switches, while preserving compatibility with Foxboro FBM timing and signaling conventions for seamless integration into existing control architectures. This module is used to scale input capacity on a Foxboro FBM system, adding more monitored points to the existing control architecture. Because it preserves the 120 VAC input rating and Foxboro FBM compatibility, it simplifies expansion projects without requiring alternate wiring or signal conditioning.