VFD (VARIABLE FREQUENCY DRIVE) – In order to attain different levels of Speed and torque in AC Motor drives, if and when required, VFDs are incorporated in the systems of industrial shop floors and elsewhere worldwide. Utility areas of VFD range from small appliances to the large mine-based mill drives and air-compressors. Though global level usage of VFDs is relatively small, they have their niche areas of importance where usage of VFDs cannot be compromised, since the purpose of incorporation of VFDs is to attain control of performances and saving of energy whenever and wherever required. VFD Training provides to the students insights on the subject.

Experience VFD TRAINING at Wiztech

Wiztech Automation has made it the organization’s mission to ensure that the students are always trained thoroughly both in theory and practical aspects with hands on training, since without the skill to handle one cannot just have the knowledge. In VFD Training, Wiztech covers AC drives, dc drive and servo drive, VFD panel wiring, parameter settings and its communications with PLC / DCS using Modbus protocol. Incorporation of various sensor-settings for acceleration and deacceleration controls of motors is an important area covered in the syllabus of VFD Training.

Over the last four decades, power electronics technology has reduced VFD cost and size and improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.


WIZTECH gives best and practical experience with VFD(ac drives, dc drive and servo drive), VFD panel wiring, parameter settings and its communicate with PLC / DCS using Modbus protocol. Wiztech provide training about various sensors settings acceleration and de-acceleration time for motor control.

Industrial Automation - DRIVES

  • Animation
  • Power Diagram
  • Control Diagram
  • VFD Control Panel
  • Application Macro
  • Actual signals and parameters
  • Start up control with id run
  • No load test
  • Interfacing with PLC

AC Motor

The AC electric motor used in a VFD system is usually a three-phase induction motor. Some types of single-phase motors can be used, but three-phase motors are usually preferred. Various types of synchronous motors offer advantages in some situations, but three phase induction motors are suitable for most purposes and are generally the most economical motor choice. Motors that are designed for fixed-speed operation are often used. Elevated voltage stresses imposed on induction motors that are supplied by VFD.

Energy Savings

Many fixed-speed motor load applications that are supplied direct from AC line power can save energy when they are operated at variable-speed, by means of VFD. Such energy cost savings are especially pronounced in variable-torque centrifugal fan and pump applications.

Control performance

AC drives are used to bring about process and quality improvements in industrial and commercial applications, acceleration, flow, monitoring, pressure, speed, temperature, tension and torque.