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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
| 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.
