Allen Bradley 1771-OAD PLC Module

The Allen Bradley 1771-OAD is an AC output module designed for use in PLC-5 programmable logic controller (PLC) systems. It provides high-voltage AC output switching for industrial automation applications, offering dependable control of external devices such as solenoids, relays, motors, and indicator lights. This module is part of the 1771 I/O series, ensuring seamless integration with PLC-5 racks for reliable industrial process automation.

Technical Specifications

  • Manufacturer: Allen Bradley (Rockwell Automation)
  • Model: 1771-OAD
  • Series: 1771 I/O Module
  • Number of Outputs: 16 outputs
  • Output Type: AC, Triac-switched
  • Voltage Range: 85-265V AC
  • Output Current Rating: 2A per point (max), 8A per module (max)
  • Response Time:
    • Turn-on: 5ms max
    • Turn-off: 8.3ms max
  • Isolation Voltage: 1500V AC (field side to logic side)
  • Backplane Current Draw: 195mA at 5V DC
  • Module Power Dissipation: 4.9W max
  • Mounting: Standard 1771 chassis slot
  • Connector Type: Removable field wiring connector

Key Features

  • 16 AC output points for controlling industrial loads
  • Wide voltage range (85-265V AC) for flexible application use
  • Optically isolated outputs provide enhanced noise immunity and system protection
  • Triac output switching for reliable, high-power AC load control
  • Modular design for easy integration with PLC-5 I/O systems
  • LED status indicators provide clear diagnostics for each output channel

Compatible Allen Bradley Components

  • Allen Bradley PLC-5 Controllers (1785 Series)
  • Allen Bradley 1771 I/O Chassis
  • RSLogix 5 Software for programming and configuration
  • FactoryTalk View for monitoring and diagnostics

Industry Applications

  • Manufacturing automation and assembly line control
  • Conveyor and material handling systems
  • Pump and motor control in industrial processes
  • Lighting and HVAC control systems
  • Food and beverage processing automation

Installation & Operational Notes

  • Mounts in a standard 1771 I/O chassis for seamless PLC-5 system integration
  • Ensure proper wiring and voltage compatibility before installation
  • Triac-switched outputs provide durable and long-lasting AC load control
  • Routine maintenance recommended to ensure optimal module performance

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