Allen-Bradley 1746-IN16 16-Point Digital Input Module

Allen‑Bradley 1746-IN16 is a 16‑point digital input module designed for the SLC 500 PLC system. It accepts 24 V AC or DC input signals across 16 discrete channels and is intended for open‑chassis mounting in 1746 I/O racks. The module draws about 85 mA from the backplane, and its signal delay is listed as 15 to 25 milliseconds, making it suitable for reliable sensing of commonly used field devices such as sensors, switches, proximity sensors, and pushbuttons. Used in industrial automation to feed discrete input states to the SLC 500 controller, the 1746-IN16 is a drop‑in option for new installations or replacement in existing 1746 series backplanes, maintaining compatibility with standard 1746 I/O backplane and power configurations. Typical applications include machine automation, conveyor line monitoring, button/limit switch interfaces, and safety interlock circuits where 16‑channel digital sensing is required.