1756-OB8EI Allen-Bradley ControlLogix Digital Output Module

Product Overview

The Allen-Bradley 1756-OB8EI is a digital DC sourcing output module. It belongs to the ControlLogix series. This module provides eight electronically-fused outputs. Each channel is individually isolated. It operates on a 24VDC supply. The output voltage range is 10-30VDC. It delivers 2A per channel at 60 degrees Celsius. The module offers robust performance for demanding applications. Its compact design saves panel space. It uses a removable terminal block for easy wiring.

Application Scenarios

This module controls various industrial actuators. Use it for solenoid valves and motor starters. It also works with indicator lights. The module is ideal for factory automation. It performs well in material handling systems. Use it in packaging machinery. It suits automotive assembly lines. The module is also good for process control. It provides reliable switching for DC loads. Its electronic fusing protects connected devices.

Technical Specifications

The module has eight sourcing outputs. Each channel can handle 2A continuously. The total module current is 10A at 60 degrees Celsius. It draws 250mA from the 5.1VDC backplane. It draws 2mA from the 24VDC backplane. Power dissipation is 4.7W at 60 degrees Celsius. The output signal delay is 1ms from OFF to ON. The delay is 5ms from ON to OFF. The surge current rating is 4A for 10ms. The short trip is greater than 4.5A. The module has a maximum off-state leakage of 1mA. The maximum voltage drop is 1.2VDC at 2A. The continuous isolation voltage is 250V. The module operates from 0 to 60 degrees Celsius. It stores from -40 to 85 degrees Celsius.

Installation & Maintenance Guide

Install the module in a ControlLogix chassis. Use the 1756-TBCH or 1756-TBS6H terminal block. Ensure the backplane power is off before installation. Slide the module into the slot until it locks. Connect field wiring to the terminal block. Torque screws to the specified value. Do not exceed the maximum surrounding air temperature. Keep the enclosure free of dust. Check the module status via the LED indicators. Replace the module only if diagnostics indicate a fault.

Packing List

One Allen-Bradley 1756-OB8EI module. One removable terminal block. One user manual. The package is an anti-static bag. The box is sturdy for shipping. We ship via Fedex, UPS, or DHL. Delivery is fast and reliable.