ABB PF900-NR 3BDH000357 Power supply module

Specific Parameters

Electrical Parameters
Supply Voltage: 24V DC ±10%
Output Current: Maximum 4A (continuous output)
Input Configuration: Dual power input terminals (8+/11+, 9-/12-), supporting loop power supply (maximum 10A)
Output Signal: Fault relay contact (terminals 7/10, normally closed type)
Bus Interface: Dedicated connection terminals for PR 900-N power rail (13/15)
Fault Detection: Short circuit protection, overcurrent protection, power abnormality monitoring
Isolation Level: 2.5kV AC between input and output (1 minute)
Power Consumption: ≤10W under normal operation
Environmental Parameters
Operating Temperature: -25°C to 60°C
Storage Temperature: -40°C to 85°C
Relative Humidity: 5% to 95% (non-condensing, no dew formation)
EMC Immunity: Compliant with NAMUR NE 21 standard
Vibration Resistance: 10-500Hz, 5g acceleration (compliant with IEC 60068-2-6)
Shock Resistance: 15g acceleration, 11ms duration (compliant with IEC 60068-2-27)
Mechanical Parameters
Dimensions: 20mm (W) × 115mm (H) × 120mm (D)
Weight: Approximately 180g
Mounting Method: 35mm standard DIN rail (compliant with EN 60715)
Protection Class: IP20 (module itself)
Housing Material: Flame-retardant PA66 engineering plastic (UL 94 V-0 grade)
Terminal Type: Spring-loaded crimp terminals (compatible with 16-22 AWG wires)

Product Performance

PF900-NR adopts dual redundant power input design, supporting parallel operation of two modules to achieve redundant power supply. Reverse diodes prevent power conflicts, ensuring uninterrupted system operation in case of single power failure. Integrated real-time fault diagnosis circuit provides short-circuit response time ≤10ms, with fault status fed back through dual channels of relay output and LED indicators, achieving diagnostic coverage ≥99%.

The module maintains stable output accuracy within the wide temperature range of -25°C to 60°C, with voltage regulation rate ≤0.5% and load regulation rate ≤1%. EMC filtering circuit effectively resists electromagnetic interference in industrial sites, ensuring power supply ripple ≤50mV in high-interference environments. Supporting hot-swap replacement, the power rail remains powered during maintenance, with mean time between failures (MTBF) ≥300,000 hours.

Plug-in jumpers allow flexible configuration of fault response modes, compatible with power monitoring interfaces of ABB AC500, AC800M and other control systems, supporting cascade transmission of collective error signals to simplify fault management in multi-module systems.

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