Allen-Bradley 1756-OX8I Isolated Relay Output Module

Product Overview

The Allen-Bradley 1756-OX8I is an isolated relay output module. It belongs to the ControlLogix family. This module provides 8 individually isolated outputs. Each output uses Form C contacts. It handles AC and DC loads. The module operates from 10-265 Volts AC. It also works with 5-150 Volts DC. The initial contact resistance is 100 mΩ at 6V 1A. This module ensures reliable switching in industrial applications.

Application Scenarios

Use the 1756-OX8I for discrete control tasks. It works well in manufacturing plants. Use it for motor starters and valve control. It suits conveyor system management. The module handles high-voltage switching. It is ideal for isolation-critical processes. Use it in power distribution panels. It works in chemical processing plants. The module is perfect for heavy machinery control.

Technical Specifications

The module has 8 output points. Each point is individually isolated. Output current ratings are 2, 0.5, and 0.25 Amps. The maximum switching frequency is 0.3 Hz at rated load. Mean bounce time is 1.2 ms. Maximum output delay is 13 milliseconds. Expected contact life is 300 kHz resistive. Inductive life is 100 kHz. Backplane current at 5 Volts is 100 mA. Power dissipation is 3.1 Watts at 60 Celsius. Isolation voltage is 250V continuous. It uses basic insulation type.

Installation & Maintenance Guide

Install the module into a ControlLogix chassis. Use a 1756-TBCH or 1756-TBS6H terminal block. Ensure power is off before wiring. Connect loads to the Form C contacts. Follow the wiring diagram in the manual. Test outputs after installation. Check for loose connections regularly. Keep the module clean and dry. Replace the module if contacts wear out.

Packing List

1 x 1756-OX8I Isolated Relay Output Module
1 x Installation Manual