Allen-Bradley 1746-1A16 16-Point Input Module

Allen-Bradley 1746-IA16 (often cataloged as 1746-1A16) is a 16-channel AC input module for the SLC 500 family. It accepts 100/120 VAC field signals and transmits each channel’s on/off state to the SLC 500 controller through the 1746 backplane in a standard I/O rack. This discrete input module is used to read line-voltage signals from field devices such as pushbuttons, limit switches, and other sensors, enabling reliable monitoring and control in industrial automation applications. It occupies a single slot in a 1746 rack and is designed to integrate with other 1746 I/O modules within RSLogix 500 projects, with the 16 inputs addressed in the controller’s I/O image for straightforward mapping to tags or addresses in your control program. Typical applications include machine control, conveyor systems, and process monitoring where 120 VAC inputs are used to indicate device status or start/stop signals.