ABB UFC721AE 3BHB002916R0101 Power Supply 24VDC 10A | Advant OCS

ABB UFC721AE Power Supply Module - High-Performance 24VDC Solution for Advant OCS & 800xA

The ABB UFC721AE (3BHB002916R0101) represents industrial-grade power conversion technology engineered for mission-critical Advant OCS and System 800xA distributed control platforms. This high-capacity power supply module delivers 24V DC output at 10A continuous current with >90% efficiency, ensuring uninterrupted operation of controllers, I/O modules, and communication interfaces across power generation, oil & gas, chemical processing, and manufacturing automation environments.

Technical Specifications

Power Conversion Architecture

Universal Input Flexibility: The UFC721AE accepts both AC and DC input sources across voltage ranges from 100-240 VAC or 110-250 VDC, accommodating global utility standards and battery backup systems without configuration changes. This dual-input capability simplifies spare parts inventory and enables deployment across international facilities with varying electrical infrastructure.

High-Efficiency Switching Topology: Advanced switch-mode power supply (SMPS) design achieves >90% conversion efficiency across the full load range, minimizing heat dissipation and reducing cooling requirements. Active power factor correction (PFC) maintains power factor above 0.95, reducing harmonic distortion on facility electrical systems.

Precision Output Regulation: Tight ±1% line and load regulation maintains stable 24V DC output across input voltage variations, load transients, and temperature extremes. Low output ripple (<100mV p-p) ensures clean power delivery to sensitive microprocessor-based control systems without additional filtering.

System Integration & Compatibility

Advant OCS Platform: The UFC721AE serves as the primary power source for ABB's Advant Open Control System, powering AC 410 controllers, AC 450 processors, and distributed I/O racks. The 10A output capacity supports typical controller configurations with multiple communication links, I/O modules, and diagnostic interfaces.

System 800xA Integration: Fully compatible with ABB's 800xA distributed control architecture, the module provides reliable power for AC 800M controllers, S800 I/O systems, and communication gateways. Multiple UFC721AE units can be paralleled using external redundancy modules for N+1 fault-tolerant configurations.

Legacy System Support: Backward compatible with earlier Advant OCS installations, enabling phased migration to 800xA platforms while maintaining existing power infrastructure. Drop-in replacement capability minimizes upgrade costs and commissioning time.

Industrial Applications

Power Generation Facilities: Supplies control power for turbine governors, boiler automation, and emissions monitoring systems in coal-fired, gas-fired, and combined-cycle power plants. The wide operating temperature range supports outdoor enclosures and harsh industrial environments without derating.

Oil & Gas Production: Powers wellhead controllers, pipeline SCADA systems, and compressor station automation in remote locations with unreliable grid infrastructure. Dual AC/DC input capability enables operation from solar panels, wind turbines, or diesel generators during utility outages.

Chemical Processing: Provides reliable power for reactor control systems, batch sequencers, and safety instrumented functions in chemical plants requiring 24/7 continuous operation. The module's protection features prevent process interruptions during electrical disturbances.

Manufacturing Automation: Energizes programmable logic controllers (PLCs), human-machine interfaces (HMIs), and distributed I/O systems in automotive assembly, food processing, and pharmaceutical production facilities. High efficiency reduces operating costs in large installations with hundreds of control points.

Water Treatment Plants: Supports municipal and industrial wastewater treatment control systems where service interruptions impact public health and environmental compliance. The module maintains continuous monitoring and control of critical treatment processes.

Protection & Reliability Features

• Overvoltage Protection: Electronic crowbar circuit clamps output to safe levels during internal fault conditions, protecting downstream electronics from destructive voltage spikes
• Overcurrent Limiting: Constant-current foldback reduces output during overload, allowing temporary peak demands while preventing thermal damage
• Short-Circuit Protection: Hiccup-mode operation cycles power during sustained short circuits, enabling automatic recovery when fault clears
• Thermal Shutdown: Internal temperature sensor initiates controlled shutdown at 85°C junction temperature, with automatic restart after cooling
• Input Transient Immunity: Surge suppression withstands 2kV common-mode and 1kV differential-mode transients per IEC 61000-4-5
• Soft-Start Circuitry: Limits input surge current to <30A peak during power-up, preventing nuisance trips of upstream circuit breakers

Installation & Commissioning

The UFC721AE mounts on standard 35mm DIN rail (EN 60715 TH35) or installs in ABB control system racks using keyed connectors. Screw-clamp terminals accept 0.5-2.5mm² wire (AWG 20-14) with captive pressure plates preventing strand damage.

Wiring Guidelines: Input and output circuits should use separate cable runs to minimize EMI coupling. Output wiring to distributed loads requires voltage drop calculations to ensure <0.5V loss at maximum current. Star-point grounding at the power supply output terminal reduces ground loop noise.

Output Voltage Adjustment: Trim potentiometer enables ±10% output voltage adjustment to compensate for long cable runs or specific equipment requirements. Factory default setting: 24.0V DC.

Commissioning Procedure: Verify input voltage matches local supply before energizing, measure output voltage under no-load conditions (should read 24.0-25.2V DC), apply load incrementally while monitoring output voltage and temperature rise, confirm LED status indication and protection circuit operation.

Diagnostic & Monitoring

Front-panel LED indicators provide real-time status: green AC OK confirms input power presence, green DC OK verifies output voltage within specification, red FAULT illuminates during overload, overvoltage, or thermal shutdown conditions. These visual indicators enable rapid troubleshooting without test equipment.

Remote Monitoring: Optional relay contact outputs (available in extended models) provide dry-contact signals for integration with SCADA alarm systems, enabling predictive maintenance based on power supply health trends.

Maintenance & Service Life

The UFC721AE utilizes electrolytic capacitors rated for 10,000 hours at maximum operating temperature, translating to 20+ year service life in typical industrial environments with 40°C average ambient. No periodic maintenance required beyond annual visual inspection and terminal torque verification.

Preventive Maintenance Schedule: Annual inspection includes visual examination of terminal connections, verification of LED status indicators, output voltage measurement under load, and cleaning of ventilation slots. Electrolytic capacitor replacement recommended at 10-year intervals in high-temperature applications.

Environmental & Safety Compliance

Designed for harsh industrial environments, the UFC721AE meets stringent international standards:

• IEC 61131-2: Programmable controller equipment requirements for industrial environments
• CE Marking: Complies with Low Voltage Directive 2014/35/EU and EMC Directive 2014/30/EU
• UL/CSA Listed: Certified to UL 508 and CSA C22.2 No. 14 for North American installations
• RoHS Compliant: Meets EU Directive 2011/65/EU restricting hazardous substances
• EMC Performance: Complies with EN 61000-6-2 (immunity) and EN 61000-6-4 (emissions) for industrial environments
• Vibration & Shock: IEC 60068-2-6 and IEC 60068-2-27 compliant for transportation and operation
• ATEX Option: Zone 2 certification available for hazardous area control rooms

Related Products

Ordering Information

Standard Configuration: 3BHB002916R0101 includes UFC721AE power supply module with universal AC/DC input, 24VDC 10A output, DIN-rail mounting hardware, and installation documentation.

Recommended Spares: Maintain 10% spare inventory for critical applications to minimize downtime during unplanned failures. Extended warranty and preventive maintenance programs available through ABB service channels.

Why Choose Industrial Control Hub?

We specialize in ABB legacy control system components with comprehensive inventory of Advant OCS and 800xA spare parts. Every UFC721AE power supply ships with manufacturer documentation, wiring diagrams, and technical support access. Our engineering team provides application assistance for power budget calculations, redundancy configurations, and system integration troubleshooting.

Emergency Availability: Expedited shipping available for critical system failures requiring immediate replacement. 24/7 technical hotline staffed by engineers familiar with Advant OCS and 800xA architectures.

Quality Assurance: All modules undergo incoming inspection and functional testing before shipment. We maintain inventory across multiple distribution centers for rapid delivery supporting emergency replacements and planned projects.

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