Allen-Bradley 1756-IA16 16-Point AC Input Module

The Allen-Bradley 1756-IA16 is a 16-point AC digital input module for ControlLogix systems that accepts 120V AC discrete signals from field devices. It interfaces pushbuttons, selector switches, limit switches, and relay contacts to Logix-based controllers through the ControlLogix backplane, expanding AC input capacity for industrial applications such as control panels, motor control centers, packaging equipment, and automated production lines. This sourcing-type module provides 16 AC inputs with a 79–132V AC range and a 47–63 Hz operating frequency, designed for 120V AC use, and it operates from 0 to 60°C (32 to 140°F). Backplane current draw is module dependent (5V DC and 24V DC), and the unit features group-isolated inputs mounted in a ControlLogix chassis; common replacements include Allen-Bradley 1756-IB16, 1756-IA32, and 1769-IA16.