The Allen-Bradley 1771-OA is an 8-channel AC output module for PLC-5 systems. It supports 92-138V AC loads with a 1.5A continuous current per point. This module includes built-in fuse protection and status indicators for reliable industrial automation and device control.
The Allen-Bradley 1771-OA serves as a high-performance alternating current output solution for the legacy PLC-5 platform. This module features eight independent channels designed to interface with diverse industrial loads. It operates within a voltage range of 92V to 138V AC, providing reliable switching for automated control systems.
This module provides robust power handling for demanding environments. Each output channel supports a continuous current of 1.5A. The hardware manages high-demand startup cycles through a 4A surge capacity lasting up to 8.3 milliseconds. Users must ensure the total module current does not exceed the 6A thermal limit to maintain long-term reliability.
Engineers typically deploy the 1771-OA to drive inductive and resistive loads. The module effectively controls solenoid valves, motor starters, and magnetic contactors. It also powers signaling equipment such as indicator lamps and audible alarms. Its design ensures compatibility with standard 1771 I/O chassis, occupying a single slot for efficient space management.
Proper installation requires specific backplane keying to prevent hardware damage. Installers should place plastic keying bands between pins 4-6 or 12-14. The front panel includes eight status LEDs for real-time monitoring of each output. A dedicated fuse indicator notifies maintenance personnel of circuit failures. Always disconnect the power source before removing or inserting the module to prevent electrical arcing.
We are committed to protecting your privacy. The information collected here is strictly used to provide the requested quotes, technical support, and relevant industrial automation solutions.