Description
Product Name : 1775-AD2 Allen Braley Output module
Product details:
The Allen-Bradley 1775-AD2 is a legacy industrial component, specifically an Asynchronous Digital I/O Adapter Module designed for use within the PLC-3 programmable controller system. While this product is considered “Mature” or “End of Life” (EOL) by Rockwell Automation, it remains a critical part of maintaining older industrial infrastructure.
Product Description
The 1775-AD2 serves as an interface between a PLC-3 processor and remote I/O chassis. It allows the central processor to communicate with various digital input and output modules located at a distance. It is designed to handle asynchronous data transmission, ensuring that signals from field devices (sensors, switches, etc.) are correctly interpreted by the PLC-3 logic.
Technical Parameters
| Feature | Specification |
| Module Type | Asynchronous Digital I/O Adapter |
| Compatibility | Allen-Bradley PLC-3 Systems |
| Communication Port | RS-232 / RS-422 (Asynchronous) |
| Backplane Current | 1.5A @ 5V DC (Typical) |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Humidity | 5% to 95% (non-condensing) |
| Isolation | 1500V RMS (continuous) |
Product Advantages
- Legacy Support: Enables the continued operation of proven PLC-3 systems without requiring a full-scale, expensive migration to modern controllers.
- Robust Construction: Built with industrial-grade components designed to withstand harsh factory environments (vibration, heat, and electrical noise).
- Distance Flexibility: Allows I/O racks to be placed closer to the machinery, reducing the cost of long-run parallel wiring.
- Simple Integration: Uses standard asynchronous protocols that were the benchmark for reliability in 1980s and 90s automation.
Important Precautions & Notes
Note: Because this is a legacy product, technical support from the manufacturer may be limited.
- Electrostatic Discharge (ESD): This module contains sensitive electronic components. Always use a grounding wrist strap when handling or installing.
- Power Down: Never insert or remove the 1775-AD2 module while the chassis power is “ON.” Doing so can result in permanent hardware damage or unpredictable machine behavior.
- Configuration: Ensure that the DIP switch settings (for baud rate and station addressing) are correctly configured before installation; otherwise, communication errors will occur.
- Firmware Compatibility: Verify that the PLC-3 processor firmware version is compatible with the 1775-AD2 revision.
Product Applications
The 1775-AD2 is typically found in heavy industrial sectors that have long equipment lifecycles, such as:
- Automotive Manufacturing: Managing old assembly line digital signals.
- Steel Mills: Monitoring high-heat sensor arrays and motor control centers.
- Water Treatment: Controlling pumps and valves across large-scale remote facilities.
- Food & Beverage: Managing legacy packaging and bottling line synchronization.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
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Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
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