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Product Introduction
The ABB SS822 3BSC610042R1 Power Voting Unit is a critical component within ABB’s Advant Master and Symphony Plus distributed control systems. Designed for high-integrity process automation environments, the SS822 enables secure and reliable signal evaluation through its voting logic system. This module plays a key role in fault-tolerant architectures, ensuring that only validated and agreed-upon signals are forwarded for critical process decisions.
The SS822 is typically used in applications requiring high availability and safety integrity levels, such as in oil & gas, power generation, and chemical industries. This voting unit is engineered with redundancy and diagnostics in mind, enhancing the overall robustness and reliability of the control system.
Product Specifications
| Parameter | Details | 
|---|---|
| Product Name | Power Voting Unit | 
| Model Number | SS822 | 
| Part Number | 3BSC610042R1 | 
| Manufacturer | ABB | 
| System Compatibility | Advant Master, Symphony Plus | 
| Function | 1oo2, 2oo3 Voting Logic for Redundant Signals | 
| Power Supply | 24 V DC | 
| Typical Power Consumption | < 5 W | 
| Input Channels | 2 or 3 digital/analog signals | 
| Output Type | Voted signal output (digital or analog) | 
| Redundancy Support | Yes (supports high-availability systems) | 
| Mounting Type | DIN rail or system rack | 
| Diagnostic Function | Integrated diagnostic and fault reporting | 
| Operating Temperature | -25°C to +70°C | 
| Storage Temperature | -40°C to +85°C | 
| Humidity Range | 5–95% non-condensing | 
| Certifications | CE, RoHS, SIL3 (with system integration) | 
| Dimensions (W x H x D) | 50 x 80 x 22 mm | 
| Weight | 0.2 kg | 
Applications
The ABB SS822 Power Voting Unit is designed for mission-critical industrial automation systems, particularly where signal reliability and safety are paramount. Typical application areas include:
- 
Power Generation Plants – For turbine control systems, ensuring validated signals are used in trip logics.
 - 
Oil and Gas Industry – Used in emergency shutdown systems (ESD) and wellhead control.
 - 
Chemical Processing Units – Ensures safe operation by voting on multiple redundant inputs.
 - 
Nuclear Facilities – Applied in safety instrumented systems (SIS) for critical trip functions.
 - 
Water Treatment Plants – For safety-critical pump and valve control logic.
 - 
Pharmaceutical Manufacturing – Enables compliance with regulatory safety logic through input validation.
 
Advantages
- 
Enhanced Safety: Implements voting logic (1oo2, 2oo3) to validate signals before execution, reducing false positives or failures.
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System Redundancy: Supports redundant architecture for high system availability.
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Diagnostic Capabilities: Integrated self-monitoring and fault indication features ensure proactive maintenance.
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High Compatibility: Seamless integration with ABB Symphony Plus and Advant systems.
 - 
Compact Design: Space-saving form factor with DIN rail or rack mounting.
 - 
Environmental Tolerance: Operates reliably in harsh industrial conditions with wide temperature and humidity support.
 - 
Certifications: Designed to meet stringent industrial safety standards (SIL3, CE, RoHS).
 
Frequently Asked Questions (FAQ)
- 
What is the function of the ABB SS822 Power Voting Unit?
It evaluates redundant signals using voting logic (e.g., 2oo3) to ensure only validated inputs are used in process control. - 
Which systems is the SS822 compatible with?
It is fully compatible with ABB’s Advant Master and Symphony Plus systems. - 
What types of signals does it support?
The SS822 supports both analog and digital input signals for voting. - 
Does the SS822 support redundant configurations?
Yes, it is designed to work in high-availability systems with redundant signal inputs. - 
Is the SS822 suitable for safety-critical applications?
Yes, it is SIL3-capable when integrated properly in a certified safety system. - 
What mounting options are available?
It can be mounted on a DIN rail or inside system-specific module racks. - 
What is the diagnostic feature of this module?
It includes fault detection and reporting for input discrepancies or internal faults. - 
Can this module operate in extreme environments?
Yes, it is designed for industrial use and supports a wide temperature range from -25°C to +70°C. - 
How is the power supplied to the SS822?
It operates on a 24V DC power supply. - 
Is the SS822 easy to maintain?
Yes, it has built-in diagnostics and status indicators for quick troubleshooting and maintenance. 
Related Models from the Same Series
| Model | Description | Compatibility | Power | 
|---|---|---|---|
| SS820 | Power Supply Unit | Advant Master, Symphony Plus | 24V DC | 
| SS823 | Input Signal Conditioner | Symphony Plus | 24V DC | 
| SS824 | Redundancy Switching Unit | Advant Master | 24V DC | 
| SS825 | Digital Signal Filter | Symphony Plus | 24V DC | 
| SS826 | Analog Voting Unit | Advant & Symphony Systems | 24V DC | 
| SS821 | Field Signal Isolation Unit | Universal ABB DCS Systems | 24V DC | 
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