VFD Variable Frequency Drive

VFD Variable Frequency Drive

Variable Frequency Drives (VFDs) (also known as variable speed drive (VSDs), adjustable speed drive, adjustable frequency drive, AC drive, Microdrive or inverter), are used to optimise machine performance, save energy, and lower machine life cycle costs across a range of applications.

Unitronics VFDs offer a number of options for both single and three phase VFDs ranging from 0.4 kW and up to 110 kW.

The main features of the Unitronics VFDs include:

  • Built-in EMC Filters,
  • Various Mounting options including Wall mount, Flange mount and Rail mount,
  • Sensor less Vector and Torque control,
  • STO (Safe Torque Off),
  • Built-in Braking units,
  • Remote Access,
  • Monitor and Debug facilities via Scope Trace

Unitronics VFDs can be used as a stand-alone product, or as part of a complete All-in-One package along with the Unitronics PLC+HMI controllers: UniStream®, Vision™ and Samba™ allowing use the same programming software as the PLC control and HMI application and operation  of the VFD directly from the controller’s HMI panel.

 

UMI-B1 Series (STO- TÜV SÜD certified)
UMI- B1 Series – UL Certified
UMI-B5 Series – UL Certified

 

Unitronics VFDs can be used as a stand-alone product, or as part of a complete All-in-One package with the Unitronics PLC+HMI controllers UniStream®, Vision™ and Samba™.

This simplifies workflow by enabling you to:

  • Obtain your VFDs, PLC + HMI controllers and related components, as well as technical support, from a single supplier.
  • Operate your VFD directly from the controller’s HMI panel
  • Use the same programming software as the PLC control and HMI application, to:
  • Quickly set-up and configure multiple VFDs
  • Monitor and debug your VFD – either via UniLogic or Scope Trace
  • Remotely Access your VFD via UniLogic Software
  • More About The Benefits of VFDs

    A variable frequency drive (VFD) is a type of motor controller. It drives an electric motor by varying the frequency and voltage of its power supply (resulting the increase or decrease of motor speed), this also gives it the capability to control ramp-up and ramp-down of the motor during start or stop. There are many reasons to adjust this motor speed, for example:
    • To reduce energy consumption and improve system efficiency (compared to direct-on-line (DOL) operation, where the motor runs at full speed regardless of the demand).
    • Match the speed of the drive to the process requirements
    • Match the torque or power of a drive to the process requirements
    • Improve the working environment by lowering noise levels from fans and pumps
    • To reduce mechanical stress on machines and to extend their lifetime

    In addition, Unitronics drives integrate networking and diagnostic capabilities to better control performance and increase productivity. Energy savings of up to 45%, intelligent motor control and reduction of peak-current drawn are excellent reasons to choose a Unitronics VFD as the controller in every motor-driven system.