Industrial IMDSI12 infi 90 Digital Input Module

The IMDSI12 is a Bailey/ABB Infi 90 universal digital input slave module that provides 16 field signals to the INFI 90/NET 90 distributed control system, enabling reliable monitoring of ON/OFF devices across your automation network. It accepts a broad range of input voltages—24, 48, and 125 VDC as well as 120 VAC—allowing compatibility with a wide variety of sensors, switches, and relays, and it is designed to interface with INFI 90 controller hardware through NTDI01 and NIDI01 interface modules. The unit is documented under alternate part numbers YIMDSI12 and PIMDSI12, reflecting its role as a digital input slave within the Infi 90 family. Power and wiring details include a +5 VDC supply on the P1 connector to power the module’s logic, with dedicated common and non-connection pins per the Bailey Infi 90 documentation, and a 32‑jumper configuration set to manage the input channels. In typical use, the IMDSI12 converts diverse process field signals into clean digital inputs that feed the central controller for sequencing, alarms, interlocks, and safety interlocks, making it a compact, scalable solution for expanding digital input points in legacy Infi 90 installations. The module’s universal input design and 16-channel footprint suit control rooms and field networks where multiple sensor types must be monitored by a single Bailey Infi 90 control system, enabling straightforward integration with existing NIDI/NTDI interfaces and associated I/O wiring.