ABB DSSS171 voting unit

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ABB DSSS171 Voting Unit 

1. Product Description

The ABB DSSS171 is a voting unit designed for safety-critical control systems, particularly in DCS (Distributed Control Systems) and industrial automation applications. It performs redundant signal processing and majority voting to ensure reliable decision-making in fault-tolerant systems.

2. Key Specifications

3. Key Features

✅ Redundancy Support: Implements 2-out-of-3 (2oo3) or 1-out-of-2 (1oo2) voting for fault tolerance .
✅ Flexible Configuration: Adaptable to digital or analog signals for diverse safety systems.
✅ High Reliability: Designed for 24/7 operation in harsh industrial environments.
✅ Seamless Integration: Compatible with ABB’s DCS platforms (e.g., 800xA) .

4. Applications

• Process Safety Systems: Used in oil & gas, chemical plants, and power generation for critical shutdown logic.

• Nuclear Power: Ensures fail-safe operation in safety instrumented systems (SIS).

• Railway Signaling: Implements redundant voting for track switching and collision avoidance.

5. Installation & Maintenance

⚠ Wiring: Use shielded cables to prevent EMI interference .
⚠ Testing: Regular diagnostic checks to verify voting logic integrity.
⚠ Compatibility: Verify integration with ABB 800xA or third-party safety systems.

The structure and details of the product：

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