Allen-Bradley 1762-OB8 MicroLogix Digital DC Output Module

Product Overview

The Allen-Bradley 1762-OB8 is a solid-state expansion module from the MicroLogix 1200 series. It adds 8 digital DC sourcing outputs to your control system. Each output supports 24V DC at 0.5A with an aggregate of 4A per module. The operating voltage range is 20.4 to 26.4V DC. This module draws 115 mA from the 5V backplane and delivers fast signal response with an ON-state delay of only 0.1 ms and an OFF-state delay of 1.0 ms. The <a href="https://www.petroautotech.com/allen-bradley-1762-OB8-digital-dc-output-module-8-points/" title="Allen-Bradley 1762-OB8 Digital DC Output Module – 8 Points" rel="noopener">1762-OB8 features group-to-backplane isolation tested at 1200V AC or 1697V DC for one second. It operates at 0 to 55°C and withstands 30G shock and 5G vibration at 500 Hz. Compact dimensions (90 x 87 x 40.4 mm) and a weight of 210 g make it easy to integrate into existing DIN rail cabinets.

Application Scenarios

This module is ideal for automating discrete manufacturing processes such as packaging, material handling, and assembly lines. It controls solenoids, relays, and indicator lights. Use it in combination with MicroLogix 1200 controllers to expand output capacity for machine control, conveyor systems, and robotic cells. The high surge current capability (2A for 10 ms, repeatable every 2 seconds) supports inrush loads. The module is certified to UL, c-UL, and CE standards, ensuring safe operation in industrial environments worldwide.

Technical Specifications

• Number of outputs: 8 (sourcing)
• Operating voltage: 20.4-26.4V DC
• Voltage category: 24V DC
• Output current per point: 0.5A maximum
• Aggregate current: 4A per module
• Surge current: 2A for 10 ms, repeatable every 2 s
• ON-state voltage drop: 1.0V DC maximum
• Off-state leakage current: 1.0 mA maximum
• Signal delay (ON): 0.1 ms resistive load
• Signal delay (OFF): 1.0 ms resistive load
• Backplane current: 115 mA at 5V DC
• Power dissipation: 1.6 W
• Isolation (group to backplane): 1200V AC or 1697V DC for 1 s
• Power supply distance: up to 6 module lengths
• Operating temperature: 0 to 55°C (32 to 131°F)
• Storage temperature: -40 to 85°C (-40 to 185°F)
• Humidity: 5 to 95% non-condensing
• Altitude: 2000 m (6561 ft) maximum
• Shock: 30G
• Vibration: 5G at 500 Hz
• Mounting: DIN rail
• Certifications: UL, c-UL, CE

Installation & Maintenance Guide

Mount the 1762-OB8 on a standard DIN rail next to the MicroLogix 1200 controller or other expansion modules. Ensure the backplane connector aligns properly and the module snaps into place. Use a 24V DC power supply with adequate capacity for all outputs. Wire each output terminal to the load, observing correct polarity for sourcing outputs. Maintain clearance for airflow and avoid exceeding the 55°C ambient temperature. Periodically check terminal connections for tightness and inspect for dust or moisture. Replace the module immediately if output failure or physical damage occurs. Always disconnect power before servicing.

Packing List

• 1 x Allen-Bradley 1762-OB8 Digital DC Output Module
• 1 x Quick Start Guide
• Shipping via FedEx, UPS, or DHL