1794-OA8I Allen-Bradley Flex I/O Digital Output Module 8 Isolated Outputs

Product Overview

The 1794-OA8I is a digital output module from Rockwell Automation's Flex I/O series. It features 8 isolated outputs for 120V AC loads. Each output can switch up to 4A. This module connects actuators based on PLC logic. It fits into a terminal base with keyswitch position 8.

Application Scenarios

This module controls AC devices like motors and valves. It works in manufacturing lines and process plants. Use it in distributed I/O setups with a controller. The isolated channels protect against voltage surges.

Technical Specifications

Output voltage: 120V AC nominal. Output current rating: 4.0A. On-state voltage drop: 1.0V at 0.5A max. Off-state leakage: 2.25mA max. Isolation voltage: 120V continuous. FlexBus current: 80mA at 5V DC. Power dissipation: 4.1W at 0.5A max. Thermal dissipation: 14.0 BTU/hr.

Dimensions: 94 x 94 x 69 mm. Operating temperature: -20 to 55 °C. Recommended fuse: 1.6A, 250V AC slow-blow.

Installation & Maintenance Guide

Insert the 1794-OA8I into a compatible terminal base like 1794-TB3. Set the keyswitch to position 8. Wire outputs to even terminals and AC power to odd terminals. Use 0.34-3.3 mm² wire. Tighten screws to 0.56-0.79 Nm. The LED turns yellow when active. Keep the module clean and dry.

Packing List

1 x 1794-OA8I module. No terminal base included. Ships via Fedex, UPS, or DHL.