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      Variable Frequency Drives (VFD Inverters) – AC Motor Speed Control for Industrial Applications

      Variable Frequency Drives (VFD Inverters) control AC motor speed and torque by adjusting output frequency and voltage, reducing energy consumption and mechanical stress on motors and connected equipment.

      Our VFDs support 220V single-phase and 380V three-phase motors, with power ranges from 0.4kW to 800kW, suitable for pumps, fans, conveyors, HVAC systems, CNC machines, and industrial automation.

      Variable Frequency Drives (VFD Inverters) control AC motor speed and torque by adjusting output frequency and voltage, reducing energy consumption and mechanical stress on motors and connected equipment.

      Our VFDs support 220V single-phase and 380V three-phase motors, with power ranges from 0.4kW to 800kW, suitable for pumps, fans, conveyors, HVAC systems, CNC machines, and industrial automation.

      View All VFD Drives Request Technical Support

      Explore Our Variable Frequency Drive Series

      VFD Selection Guide

      VFD SelectionSelect by motor power, supply voltage, and load type. Light-load applications (pumps, fans) select 1.2–1.3× motor rating; heavy-load applications (crushers, extruders) select 1.5–1.7×. See our VFD Selection Guide for detailed guidance.

      Key Advantages

      Key Advantages

      • Energy Saving — Reduces power consumption by matching motor speed to actual load demand
      • Soft Start & Stop — Controls acceleration and deceleration to reduce inrush current and mechanical stress
      • Precise Speed Control — V/F and vector control modes for accurate speed and torque regulation
      • Built-in Protection — Overload, overheat, overvoltage, undervoltage, and short-circuit protection

      Key Advantages

      • Energy Saving — Reduces power consumption by matching motor speed to actual load demand
      • Soft Start & Stop — Controls acceleration and deceleration to reduce inrush current and mechanical stress
      • Precise Speed Control — V/F and vector control modes for accurate speed and torque regulation
      • Built-in Protection — Overload, overheat, overvoltage, undervoltage, and short-circuit protection

      Applications

      • Pumps & Water Systems — Water supply, booster, and sewage pump speed control
      • Fans & Blowers — Ventilation fans, industrial blowers, and HVAC air handling units
      • Compressors — Air and gas compressors requiring variable speed and energy saving
      • Conveyors & Material Handling — Conveyor belts, mixers, and production line equipment
      • Pumps & Water Systems — Water supply, booster, and sewage pump speed control
      • Fans & Blowers — Ventilation fans, industrial blowers, and HVAC air handling units
      • Compressors — Air and gas compressors requiring variable speed and energy saving
      • Conveyors & Material Handling — Conveyor belts, mixers, and production line equipment

      Specifications

      Parameter Description
      Input Voltage Single-phase 220V / Three-phase 380V
      Output Voltage 0V to rated input voltage
      Power Range 0.4kW – 500kW
      Output Frequency 0–500Hz (V/F control); 0–2000Hz (Vector control)
      Control Modes V/F control, Sensorless vector control (SVC), Closed-loop vector control (FVC)
      Speed Control Accuracy ±0.5% (SVC)
      Start / Stop Soft start / Soft stop
      Communication RS-485, Modbus RTU
      Protection Features Overload, overheat, overvoltage, undervoltage, phase loss, short-circuit
      Cooling Method Forced air cooling
      Ambient Temperature -10°C to +40°C (derate above 40°C)
      Installation Wall mount / Control cabinet
      Parameter Description
      Input Voltage Single-phase 220V / Three-phase 380V
      Output Voltage 0V to rated input voltage
      Power Range 0.4kW – 500kW
      Output Frequency 0–500Hz (V/F control); 0–2000Hz (Vector control)
      Control Modes V/F control, Sensorless vector control (SVC), Closed-loop vector control (FVC)
      Speed Control Accuracy ±0.5% (SVC)
      Start / Stop Soft start / Soft stop
      Communication RS-485, Modbus RTU
      Protection Features Overload, overheat, overvoltage, undervoltage, phase loss, short-circuit
      Cooling Method Forced air cooling
      Ambient Temperature -10°C to +40°C (derate above 40°C)
      Installation Wall mount / Control cabinet

      FAQs

      What is a VFD (Variable Frequency Drive)?


      A Variable Frequency Drive (VFD) controls AC motor speed and torque by adjusting the output frequency and voltage. It reduces energy consumption and mechanical stress on motors and connected equipment. VFDs are widely used in pumps, fans, conveyors, HVAC systems, and industrial automation.

      What are the key benefits of using a VFD?

      • Reduces energy consumption by matching motor speed to actual load demand
      • Soft start and stop to reduce mechanical and electrical stress
      • Precise speed control with V/F, vector, and closed-loop modes
      • Built-in protection against overload, overheat, overvoltage, undervoltage, and short-circuit

      Which applications are VFDs suitable for?

      • Pumps, fans, and HVAC systems
      • Conveyors and CNC machines
      • Industrial automation and production lines

      What voltage and power options are available?

      • Voltage: Single-phase 220V, Three-phase 380V
      • Power: 0.4kW to 500kW

      How do I select the right VFD?

      Select based on motor power, supply voltage, and load type. See our VFD Selection Guide for detailed guidance, or contact us with your motor nameplate data for a free recommendation.

       
       
       
       
       

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      Founded in 2015, SoftStarterPro provides factory-direct Motor Soft Starters, VFD Drives, SCR Power Controllers, and Power Modules. Expert technical support and OEM/ODM solutions available.

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      WhatsApp: +86 18006697926 · Email: ann@softstarterpro.com · Liushi Town, Yueqing, Wenzhou, Zhejiang, China

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