Allen-Bradley 1771-OW 16-Point Digital Output Module

The Allen-Bradley 1771-OW 16-Point Digital Output Module is an electromechanical relay output module for PLC-5 control systems, delivering 16 isolated relay contacts that switch external loads under control of the PLC-5 processor. Designed to plug into Allen-Bradley 1771 I/O racks within PLC-5 environments, this 16-point module provides discrete, isolated outputs for reliable command of actuators, solenoids, valves, indicators, and other field devices. Each output is a relay contact that provides galvanic isolation between the controller and the load, enabling safe, independent load switching while the PLC-5 handles sequencing and logic. The 1771-OW family is configured for relayed signaling and wired in groups to simplify field wiring, with compatibility across standard PLC-5 I/O chassis. Typical applications include machine-control panels, packaging lines, and process-controlling loops where multiple loads must be switched from a single module without direct device current handling by the processor. This 16-point configuration offers scalable I/O for mid-sized automation tasks, consolidating control of multiple relays in a single module and reducing panel space compared to individual relays.