Product Short Description
Product Introduction
The ABB SD831 is a high-efficiency, industrial-grade switch-mode power supply unit designed for the ABB AC 800M controller and S800 I/O systems. It converts wide-range AC or DC input voltages into a stable 24 V DC output, serving as a reliable power source for controllers, I/O modules, field instruments, and other connected automation devices. Engineered for both non-redundant and redundant configurations (with compatible voting units), it integrates advanced protection, diagnostic, and safety features to ensure continuous operation in demanding industrial environments.
Technical Specifications
- Product Type: Switch-mode power supply module for AC 800M/S800 I/O systems
Description
- Input Voltage:
- AC: 100–240 V AC, 50/60 Hz (wide range, auto-adaptive)
- DC: 110–300 V DC (wide range)
- Output Voltage: 24 V DC (regulated, SELV/PELV compliant)
- Output Current: 3 A (rated), 72 W (total output power)
- Efficiency: Up to 89.8% (high energy conversion)ABB
- Soft Start: Built-in soft-start function prevents fuse tripping during power-on
- Protection Features:
- Overcurrent protection (current limiting)
- Overvoltage protection (OVP)
- Short-circuit proof output circuitry
- Isolation: Protective electrical isolation between primary and secondary circuits
- Status Indicators: LED indicators for power-on, output normal, and fault conditions
- Mounting: DIN rail mounting (standard industrial installation)
- Dimensions: 32 mm (W) × 124 mm (H) × 102 mm (D) (compact form factor)
- Weight: Approximately 0.52 kg (lightweight design)
- Operating Temperature: 0°C to +55°C
- Humidity: 5%–95% RH (non-condensing)
- Protection Rating: IP20 (basic dust and contact protection)
- Certifications:
- EN 50178, EN 61131-2, UL 508 (electrical safety)
- RoHS (2011/65/EU), WEEE (2012/19/EU) complianceABB
- Overvoltage Category III for mains connection
Key Features
Wide-Range Input Compatibility
- Dual Input Support: Accepts both AC (100–240 V) and DC (110–300 V) inputs without manual switching.
- Global Adaptability: Operates reliably across diverse regional power grids, simplifying global deployment.
- No Mains Filter Required: Integrated design eliminates the need for external mains filtering components.
High Efficiency & Stable Output
- Switch-Mode Technology: Delivers up to 89.8% efficiency, minimizing energy loss and heat generationABB.
- Precision Regulation: Provides a clean, low-ripple 24 V DC output for sensitive industrial electronics.
- SELV/PELV Compliance: Secondary output meets safety standards for low-voltage, isolated applications.
Redundancy & System Integration
- Redundancy Support: Works with ABB SS823 or SS832 diode voting units to build fully redundant power systems.
- Seamless Compatibility: Directly integrates with AC 800M controllers and S800 I/O subsystems.
- Hot-Swappable: Enables replacement in redundant setups without system shutdown, maximizing uptime.
Robust Protection & Diagnostics
- Multi-Layer Safety: Overcurrent, overvoltage, and short-circuit protection safeguard connected devices.
- Visual Diagnostics: LED indicators provide instant status feedback for quick troubleshooting.
- Soft-Start Function: Prevents inrush current spikes, protecting fuses and circuit breakers during startup.
Compact & Easy Installation
- DIN Rail Mount: Standard industrial mounting for quick, tool-free installation in control cabinets.
- Space-Saving Design: Slim 32 mm width optimizes cabinet space utilization.
- Lightweight Construction: Reduces structural load and simplifies handling during setup.
Application Scenarios
Process Automation (DCS Systems)
- Oil & Gas: Powering AC 800M DCS for refinery process control, pipeline monitoring, and safety systems.
- Chemical & Petrochemical: Supplying stable power to reactor controls, analyzer systems, and emergency shutdown (ESD) loops.
- Power Generation: Supporting turbine control, boiler management, and plant auxiliary systems in thermal and renewable power plants.
- Water & Wastewater: Providing reliable power for SCADA, pump controls, and water treatment automation.
Manufacturing & Discrete Automation
- Automotive Production: Powering assembly line robots, conveyor systems, and quality inspection equipment.
- Pharmaceuticals: Ensuring uninterrupted power for batch processing, packaging, and cleanroom automation.
- Food & Beverage: Supporting high-speed packaging, bottling, and material handling systems.
- Electronics Manufacturing: Delivering clean power for precision assembly, testing, and semiconductor fabrication lines.
Infrastructure & Utilities
- Smart Grids: Powering remote terminal units (RTUs), substation automation, and distribution control systems.
- Building Automation: Supplying HVAC controls, fire safety systems, and energy management platforms.
- Marine & Offshore: Providing robust power for shipboard control, navigation, and offshore platform automation.
- Mining & Metals: Supporting heavy machinery control, material handling, and process monitoring in harsh mining environments.
General Industrial Control
- S800 I/O Systems: Primary power source for digital and analog I/O modules in distributed control architectures.
- Field Instrumentation: Powering transmitters, actuators, solenoid valves, and other 24 V DC field devices.
- System Retrofits: Upgrading legacy power supplies in existing AC 800M installations for improved reliability and efficiency.
- Machine Safety Systems: Ensuring continuous power for safety interlocks, emergency stop circuits, and safety PLCs.







Reviews
There are no reviews yet.