Allen-Bradley 1794-OA8 Flex I/O Digital Output Module 120V AC 4A

Product Overview

The Allen-Bradley 1794-OA8 is a Flex I/O digital output module. It provides 8 nonisolated AC outputs. This module operates at 120 Volts AC nominal. It is part of the Rockwell Automation Flex I/O 1794 series. The 1794-OA8 supports non-hazardous areas and Class 1 Division 2 locations. It helps diagnose field device problems quickly. This reduces start-up time and downtime.

Application Scenarios

Use the 1794-OA8 in industrial automation systems. It controls AC loads like motors, valves, and lights. It works well in manufacturing plants and process control. The module fits remote I/O racks. It handles up to 4 Amps total output current. Each output supports 500 mA at 55°C. Use it with compatible terminal bases like 1794-TB3, 1794-TBN, and others.

Technical Specifications

Outputs: 8 nonisolated. Nominal voltage: 120V AC. Output current: 4.0A total. On-state current min: 5mA per output. On-state voltage drop max: 1.0V at 0.5A. Off-state leakage current max: 2.25mA. Isolation voltage: 120V continuous. FlexBus current: 80mA at 5V DC. Power dissipation: 4.1W at 0.5A. Thermal dissipation: 14 BTU/hr. Surge current: 7A for 40ms. Signal delay: max 1/2 cycle. Operating temperature: 0°C to 55°C.

Installation & Maintenance Guide

Mount the module on a compatible terminal base. Connect field wiring to the top terminal strip. Use proper torque for screw clamps. Do not exceed voltage and current ratings. Check wiring for correct polarity. The module detects faults automatically. Replace the module only when power is off. Use FedEx, UPS, or DHL for shipping. Keep the module in original packaging.

Packing List

1 x Allen-Bradley 1794-OA8 Flex I/O output module. 1 x Installation guide. 1 x Product documentation. No additional accessories are included. The module is shipped in anti-static packaging.