ABB ACH550-UH-072A-4 Frequency Converter

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1. Product Overview

The ABB ACH550-UH-072A-4 Frequency Converter is a high-performance universal AC drive from the ABB ACH550 series, designed for pumps, fans, and industrial ventilation systems. It provides precise speed control, energy-efficient operation, and advanced protection functions, optimizing system performance, reducing energy consumption, and extending equipment life. The ACH550-UH series is particularly suitable for harsh industrial environments with high humidity and temperature.

2. Technical Specifications

• Model: ACH550-UH-072A-4

• Product Type: AC Frequency Converter / Drive

• Series: ABB ACH550-UH

• Rated Output Power: 7.5 kW

• Rated Output Current: 18.5 A

• Rated Voltage: 380–480 V AC, 3-phase

• Input Voltage Range: 380–480 V AC

• Input Frequency: 50 / 60 Hz

• Output Frequency Range: 0 – 599 Hz

• Control Methods:

  • V/f Control

  • Sensorless Vector Control

• Overload Capability: 150% rated current for 60 seconds

• Degree of Protection: IP21 (standard) / IP54 (optional)

• Cooling Method: Forced air cooling

• Built-in Functions:

  • PID control

  • Energy-saving mode

  • Multiple start/stop modes

  • Fault protection and alarms

• Communication Interface: Built-in Modbus RTU (RS-485)

• Mounting: Wall or cabinet mounting

• Ambient Temperature: –10 ℃ to +50 ℃

• Duty Type: Continuous duty (S1)

• Certifications: CE, UL

3. Advantages and Features

1. Energy-Efficient Operation
   Built-in energy-saving mode reduces power consumption for pumps and fans.

2. Precise Speed Control
   Sensorless vector control provides high-accuracy speed regulation without sensors.

3. Comprehensive Protection
   Overload, overvoltage, undervoltage, overtemperature, and short-circuit protection.

4. Industrial-Grade Reliability
   Stable operation in high temperature, high humidity, and dusty environments.

5. Easy Integration and Operation
   Wall-mount installation and Modbus RTU communication support remote monitoring and control.

4. Applications

• Pump and pumping station control systems

• Fans and ventilation equipment

• HVAC and cooling systems

• Industrial process control and energy-saving upgrades

• OEM machinery and automation systems

5. Installation and Usage Notes

1. Ensure the supply voltage matches the drive input voltage before installation.

2. Provide adequate ventilation to avoid overheating and derating.

3. Enter motor parameters correctly to ensure precise control and protection.

4. Installation and wiring must be performed by qualified personnel; ensure proper grounding.

5. Regularly inspect cooling paths and fan operation to prevent overheating faults.