The Allen-Bradley 1746-IA16 is a 16-channel, 120V AC input module for the SLC 500 backplane, used to convert standard 120V AC digital signals from field devices into the controller. It is categorized for 100/120V AC operation and draws a backplane current of 85 mA at 5V, providing 16 discrete input channels to the controller. As of November 24, 2022, Rockwell Automation discontinued the 1746-IA16. This module is part of the 1746 SLC family and is designed to interface 120V AC field signals — such as sensors, switches, or relays — with an SLC 500 processor.
