Description
ABB APBU-44C 64669982
1. Basic Information
ABB APBU-44C (64669982) is an original auxiliary power backup unit dedicated to ABB ACS800 multi-drive systems. It provides stable 24VDC regulated power for drive control boards, IO modules, communication units and cooling equipment. Featuring ultra-wide voltage input, low ripple output and instant power-off hold function, it effectively prevents drive shutdown and process interruption caused by grid fluctuation and instantaneous power failure, ensuring long-term stable operation of industrial transmission systems.
2. Technical Specifications
2.1 Basic Parameters
- Model: APBU-44C
- Part No.: 64669982
- Device Type: Multi-drive Auxiliary Power Backup Unit
- Applicable System: ABB ACS800 Multi-drive System
- Installation: Standard DIN Rail Mounting
- Dimension: 100×100×25mm
- Weight: 0.25kg
- Protection Class: IP20
2.2 Electrical Parameters
- AC Input Range: 85V～264V AC
- DC Input Range: 120V～370V DC
- Rated Output: 24V DC / 440W
- Voltage Accuracy: ±1% Regulation precision
- Output Ripple: ≤10μVrms
- Offset Voltage: 10μV
2.3 Protection Performance
- Full Protection: Overvoltage, undervoltage, overcurrent, short circuit, overheating, surge & reverse connection protection
- Short Circuit Mode: Self-locking protection, automatic reset after fault removal
- Isolation: Reinforced input-output electrical isolation
2.4 Status Indication
- Indicator: Power running LED & fault alarm LED
- Function: Real-time status feedback & fault signal output
- Linkage: Compatible with ACS800 drive system alarm interlock
2.5 Environmental Parameters
- Operating Temperature: -20℃～+85℃
- Storage Temperature: -40℃～+90℃
- Humidity: 5%～95%RH (Non-condensing)
- Cooling Mode: Fanless natural heat dissipation
- Features: Vibration resistance, strong EMC anti-interference, anti-aging
3. Main Features
- Ultra-wide Voltage Adaptation: Supports global standard AC/DC industrial voltage input, automatically adapts to grid fluctuations with strong universality.
- High-precision Low-ripple Output: ±1% regulation accuracy and ultra-low ripple ensure stable power supply for precision drive control and communication circuits.
- Instant Power-off Backup: Millisecond-level power hold capability avoids drive shutdown caused by grid transient flicker and voltage drop.
- Multi-dimensional Safety Protection: Seven comprehensive protection mechanisms effectively protect rear-end load equipment from various electrical faults.
- High-power Stable Load Capacity: 440W high power output meets the power demand of dense multi-drive cabinet loads without voltage drop.
- Maintenance-free Long-term Operation: Fanless design eliminates wearable parts, adapting to 7×24h uninterrupted industrial operation.
- Intelligent Fault Diagnosis: Visual LED indicators realize rapid fault location and improve operation and maintenance efficiency.
- Plug-and-play Replacement: Perfect compatibility with ABB ACS800 systems for direct replacement of old faulty power units without modification.
4. Working Principle
- Power-on Self-check Initialization: Complete hardware self-inspection and circuit initialization after power-on, and enter stable voltage regulation standby state.
- Wide-range Voltage Rectification & Filtering: Rectify and filter fluctuating grid voltage to eliminate clutter and surge interference.
- High-precision Voltage Regulation: Dynamically adjust output voltage to lock 24VDC rated output and compensate load and grid changes.
- Transient Power-off Hold: The built-in energy storage circuit continues power supply during grid instantaneous power failure to maintain system normal operation.
- Real-time Fault Monitoring & Protection: Monitor voltage, current and temperature in real time, trigger self-locking protection once abnormal conditions occur.
- Status Feedback & Linkage Alarm: Upload operating status and fault information to the drive main control system to realize system linkage protection.
5. Applications
5.1 ABB ACS800 Multi-drive System
Serves as the core auxiliary power unit for ACS800 multi-drive cabinets, providing stable power for main control boards, IO modules and communication components.
5.2 Heavy Industry Transmission Equipment
Adapt to metallurgy, mining and hoisting equipment working conditions to resist grid disturbance and avoid unexpected shutdown of transmission units.
5.3 Chemical & Paper-making Process System
Ensure continuous and stable operation of continuous production lines, preventing process interruption caused by transient grid faults.
5.4 Harsh Industrial Environment
Reliably operates under wide temperature fluctuation and strong electromagnetic interference conditions to guarantee control circuit power supply stability.
5.5 Old Equipment Maintenance & Upgrade
Replace aging and unstable power units to restore the anti-interference and power supply precision of the drive system.
