Allen-Bradley 1746-OW16 SLC 500 Digital Output Module

Allen-Bradley 1746-OW16 is a 16-point relay-output module designed for the SLC 500 controller family, providing discrete, hard-contact relay outputs to drive external loads through the 1746 backplane. It delivers 16 relay contacts suitable for switching AC or DC loads in industrial control applications, with operating voltages typically spanning 5 to 265 VAC or 5 to 125 VDC, and it is documented as part of the SLC 500 modular I/O lineup. The 1746-OW16/C variant specifically arranges the 16 normally open (N.O.) relay outputs in two eight-point groups, each with a shared common, supporting straightforward interlocks and banked wiring for load control. As a backplane-compatible module, it integrates with compatible Rockwell Automation processors and chassis (such as the 1746 backplane) to enable sequenced control of motors, valves, indicators, and other actuators in legacy automation systems. This module is ideal for applications that require relay-based switching with galvanic isolation from the processor I/O, offering robust isolation and straightforward wiring for rugged industrial environments while preserving compatibility with existing SLC 500 installations. The 1746-OW16 and related 1746-OW family are referenced in SLC 500 documentation as AC/DC relay output options, underscoring their role in distributing control signals to external devices with reliable, contact-based switching.