Product Short Description
Product Description
The ABB SS822 (Part Number: 3BSC610042R1) is a purpose-built redundant power supply management module designed for critical control systems within the ABB Advant 800xA and AC 800M platforms. It serves as the central junction for dual-redundant power inputs, providing automatic power selection, voltage supervision, load balancing, and failover capabilities to ensure uninterrupted power delivery to high-integrity control units, CPU modules, and essential I/O subsystems. As a core component of ABB’s industrial safety and reliability architecture, the SS822 eliminates single points of power failure, making it indispensable for mission-critical applications where continuous operation is non-negotiable.
Description
Technical Specifications
Core Power & Redundancy Parameters
| Parameter | Specification |
|---|---|
| Input Configuration | Dual independent 24 V DC inputs (Input 1 and Input 2) |
| Input Current Rating | 20 A per input channel |
| Output Rating | Single 24 V DC output at 20 A |
| Redundancy Mode | Hot standby with automatic switchover; load sharing capability |
| Failover Response Time | <10 ms seamless transition from primary to backup power source |
| Input Voltage Range | 24–28 V DC (nominal); wide tolerance for industrial power fluctuations |
| Output Voltage Regulation | Maintains stable output within factory-set precision; overvoltage protection at <30 V |
| Power Hold-Up Time | Sustains output during transient power dips for emergency system processing |
Electrical & Safety Specifications
| Parameter | Specification |
|---|---|
| Overcurrent Protection | Active current limiting; 35 A peak overload capacity |
| Overvoltage Protection | Dual-stage input protection; factory-predefined trip levels |
| Supervision Features | Continuous voltage monitoring for both input channels; status feedback via relay contacts |
| Isolation | Galvanic isolation between input circuits for noise immunity and safety |
| EMC Compliance | EN 61000-6-4 (emission) and EN 61000-6-2 (immunity) |
| Safety Certifications | SIL 3 rated per IEC 61508; CE, cULus, IEC 61131-2, EN 50178 |
| Enclosure Class | IP20 (indoor control panel installation); Class I equipment (with Protective Earth) |
| Overvoltage Category | Category III for primary TN network connection |
Physical & Environmental Specifications
| Parameter | Specification |
|---|---|
| Mounting | Standard DIN-rail mount (EN 50022) for easy integration into control cabinets |
| Dimensions | 116 mm (W) × 132 mm (H) × 145 mm (D) |
| Weight | 0.87 kg (1.92 lbs) |
| Operating Temperature | -25 °C to +70 °C (-13 °F to +158 °F) |
| Storage Temperature | -40 °C to +85 °C (-40 °F to +185 °F) |
| Humidity | 5–95 % RH (non-condensing) |
| Pollution Degree | Degree 2 (per IEC 60664-1) |
| Corrosion Resistance | G3 rating (ISA-S71.04) for harsh industrial environments |
Core Functions & Features
1. Redundant Power Management & Failover
- Dual Input Supervision: Continuously monitors two independent power sources (e.g., main grid + UPS, dual utility feeds) to ensure power availability in case of primary source failure.
- Millisecond-Scale Switchover: Automatically transfers power to the backup input within <10 ms when a fault (voltage drop, short circuit, disconnection) is detected in the primary channel, ensuring zero downtime for critical control loads.
- Load Balancing: Distributes power demand across dual inputs to prevent overloading, optimizing efficiency and extending component lifespan.
- Dual Overvoltage Protection: Implements dual-stage overvoltage safeguards on both input channels to protect connected control hardware from electrical surges and transients.
2. Advanced System Supervision & Diagnostics
- Real-Time Voltage Monitoring: Tracks input/output voltage levels 24/7, providing instant fault detection and alarm generation for abnormal conditions.
- Visual Status Indicators: Front-panel green LEDs confirm valid power delivery for each input channel, enabling quick visual verification of system health.
- Relay Feedback Outputs: Voltage-free “OK” contacts close to signal valid power status to supervisory systems (e.g., PLCs, SCADA), facilitating centralized monitoring and alarm logging.
- Fault Isolation: Separates redundant power supply units to prevent cross-channel interference, ensuring a fault in one channel does not impact the other.
3. Industrial-Grade Reliability & Safety
- High-Integrity Design: SIL 3 certification ensures compliance with the strictest safety standards for safety-critical control systems, such as emergency shutdown (ESD) and fire protection systems.
- Short & Open Circuit Detection: Identifies and isolates faults in power input circuits to maintain system stability and prevent cascading failures.
- Overcurrent & Overvoltage Shutdown: Automatically cuts power in the event of severe overcurrent or overvoltage to protect connected modules and equipment.
- Galvanic Isolation: Provides electrical isolation between input circuits to eliminate ground loops and noise interference, ensuring stable power delivery in electrically harsh environments.
4. Seamless System Integration
- Plug-and-Play Compatibility: Native integration with ABB Advant 800xA, AC 800M controllers, and S800/S880 I/O systems, supporting seamless upgrades and expansions.
- SELV/PELV Compliance: Approved for use with Safety Extra Low Voltage (SELV) and Protective Extra Low Voltage (PELV) power supplies, ideal for high-integrity applications requiring enhanced safety.
- DIN-Rail Mounting: Space-saving design allows compact installation in control cabinets, maximizing rack space utilization for high-density control systems.
- Global Standards Compliance: Meets international safety and EMC standards, ensuring interoperability with industrial systems worldwide.
Application Scenarios
- Power Generation: Critical power management for thermal, nuclear, and renewable power plants, ensuring uninterrupted operation of turbine controls, generator monitoring systems, and balance-of-plant equipment.
- Oil & Gas Industry: Core component in refineries, offshore platforms, and pipelines, providing reliable power for process control units, safety interlock systems, and pipeline monitoring.
- Chemical & Petrochemical: Ensures continuous power for reactor control systems, distillation units, and hazardous area monitoring, complying with strict safety regulations.
- Water & Wastewater Treatment: Powers control systems for water treatment plants, pumping stations, and distribution networks, maintaining stable operation of valves, pumps, and sensors.
- Railway & Transportation: Critical for railway signaling systems, traction control units, and passenger information systems, ensuring safe and reliable operation 24/7.
- Pharmaceutical & Food & Beverage: Supports process control systems for batch production, quality assurance, and compliance with regulatory standards, preventing production interruptions.
- Manufacturing & Automotive: Powers automated assembly lines, robotic cells, and quality control systems, ensuring continuous operation and production efficiency.
Unique Advantages
- Zero-Downtime Power Assurance: <10 ms failover time and redundant input design eliminate power-related system outages, maximizing operational availability.
- SIL 3 Safety Certification: Meets the highest industry safety standards, making it suitable for safety-critical applications where human safety and asset protection are paramount.
- Simplified Integration: DIN-rail mounting and plug-and-play compatibility reduce installation time and complexity, lowering overall system deployment costs.
- Robust Environmental Performance: Wide operating temperature range, G3 corrosion resistance, and high EMC immunity ensure reliable operation in extreme industrial environments.
- Proactive Maintenance: Integrated supervision and visual indicators enable quick fault identification, reducing troubleshooting time and minimizing maintenance costs.
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