Description

The Allen-Bradley 1771-OG is an 8-point digital output module designed for use within the PLC-5 programmable controller system. This module provides TTL (Transistor-Transistor Logic) output signals, making it suitable for interfacing with compatible logic-level devices and control systems requiring 5 VDC signal levels. As a member of the 1771 I/O family, it is engineered for high-density rack-based mounting in industrial automation environments.

Features

• 8-point digital output configuration
• TTL compatible signal levels for logic-level integration
• Designed for seamless integration with the Allen-Bradley PLC-5 platform
• Standard 1771 I/O chassis mounting
• Reliable performance for low-voltage control applications

Technical Specifications

Installation Guidelines

• Ensure the PLC-5 chassis power is disconnected before installing or removing the 1771-OG module to prevent electrical damage.
• Verify that the module is correctly seated in the intended I/O slot and that the backplane connector is fully engaged.
• Use appropriate ESD (Electrostatic Discharge) precautions when handling the module to protect internal circuitry.
• Ensure that wiring is routed away from high-voltage cables and sources of electromagnetic interference to maintain signal integrity.
• Check that the field wiring connected to the terminal block matches the voltage and current specifications of the module.

FAQ

Is the 1771-OG still in production?

No, the 1771-OG has been discontinued by the manufacturer. We provide high-quality surplus and refurbished units to support legacy PLC-5 systems.

What is the primary application for this module?

This module is primarily used in applications requiring 5 VDC TTL-level digital outputs, commonly found in legacy control systems and specific instrumentation interfaces within the PLC-5 architecture.