IP20 Variable Frequency Drives (Frequency Inverters)

Frequency inverters are AC motor drives that adjust the speed and torque of an asynchronous motor by converting the fixed-frequency mains voltage into variable frequency and voltage. They are used in pump, fan, compressor and conveyor drives to provide soft start and stop, to adjust speed according to the process, and to reduce energy consumption at partial flow in pumps and fans. The category lists single- and three-phase drives from brands such as ABB, Schneider Electric, Delta Electronics and GMT in motor powers such as 0.75 kW, 2.2 kW, 7.5 kW and 15 kW; solar pump drives, braking resistors and drive accessories are in separate subcategories. When choosing a variable frequency drive, compare the power and rated current on the motor nameplate with the drive's motor power and output current, and compare the supply phase and voltage with your mains; choose according to whether the load has constant or variable torque, the communication protocol, and the degree of protection such as IP20 or IP21. For loads with frequent stops or high inertia, a suitable braking resistor may be needed, and for long motor cables, the output filter recommended by the manufacturer.

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How to choose Variable Frequency Drives (Frequency Inverters)

Frequency inverters are AC motor drives that adjust the speed and torque of an asynchronous motor by converting the fixed-frequency mains voltage into variable frequency and voltage. They are used in pump, fan, compressor and conveyor drives to provide soft start and stop, to adjust speed according to the process, and to reduce energy consumption at partial flow in pumps and fans.

  • Separate sensing, motion control, logic processing and operator interface requirements.
  • Select signal type, supply voltage, communication protocol and I/O count for the machine network.
  • Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.

Frequently asked questions

What is Variable Frequency Drives (Frequency Inverters) and where is it used?

Frequency inverters are AC motor drives that adjust the speed and torque of an asynchronous motor by converting the fixed-frequency mains voltage into variable frequency and voltage. They are used in pump, fan, compressor and conveyor drives to provide soft start and stop, to adjust speed according to the process, and to reduce energy consumption at partial flow in pumps and fans.

What should I compare when choosing Variable Frequency Drives (Frequency Inverters)?

When choosing a variable frequency drive, compare the power and rated current on the motor nameplate with the drive's motor power and output current, and compare the supply phase and voltage with your mains; choose according to whether the load has constant or variable torque, the communication protocol, and the degree of protection such as IP20 or IP21.

Which product groups are available under Variable Frequency Drives (Frequency Inverters)?

The current subcategories include Braking Resistors, Drive Accessories, Solar Pump Drives. Open a subcategory to compare its products and technical details.

What Is a Frequency Inverter? Drive Selection Guide