Allen-Bradley 1492-IFM40DS24A-4 Interface Module

Allen-Bradley 1492-IFM40DS24A-4 is a 40-point isolated digital interface module (IFM) for the 1492 wiring family, designed to connect digital sensors and actuators to Rockwell Automation controllers. It operates on 24/48V AC/DC and uses a fixed 40-pin field-side terminal block with four terminals per input, while LED indicators provide channel-by-channel status visibility for quick diagnostics. The module delivers galvanic isolation between field wiring and the backplane to protect the control system from electrical noise and transients, supporting the full complement of 40 digital points in a compact interface footprint. Typical applications include expanding digital I/O on machine control systems—conveyors, presses, and assembly lines—where 24/48V sensors and pushbuttons must be monitored with reliable isolation and clear fault-indication through the built-in LEDs.