Allen-Bradley 1771-OBD Output Module

Allen-Bradley 1771-OBD is a 16-point digital DC output module designed for the PLC-5 family, operating from a 10 to 60 V DC supply and mounting in a 1771 I/O backplane. As a Series C DC output module, it provides sixteen discrete outputs that enable centralized control of field devices from the PLC-5 processor, making it a common choice for automation racks where compact, rugged digital outputs are required. The module is intended to switch DC loads within the PLC-5 architecture, supporting connections to actuators, relays, and other DC devices while the controller sequences signals across the backplane, integrates with the PLC-5 data table and I/O map, and supports straightforward expansion of digital output capacity in existing PLC-5 installations.