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
Model
1771-OG
Module Type
Digital Output Module
Output Type
TTL
Voltage Rating
5 VDC
Current Draw
165 mA
Point Count
8
Manufacturer
Allen-Bradley
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.
