A variable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor. A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives. Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.
Variable-frequency drives are widely used. For example, in ventilations systems for large buildings, variable-frequency motors on fans save energy by allowing the volume of air moved to match the system demand. Variable frequency drives are also used on pumps, conveyor and machine tool drives.
PIC carries Siemens and AC Tech drives.
AC Tech offers a broad range of standard products for everything from simple speed control to complex; each with a wide range of functionality, small physical size and exceptional performance. Our drives are reliable, flexible to apply, easy to commission, and meet the highest standards of quality. Lenze-AC Tech provide solutions to fulfill nearly any inverter requirement in the power range between 0.25 and 400 kW.
Choose Siemens for maximizing energy efficiency.
With Siemens, you have a choice from a broad spectrum of drive and motor technology to reduce energy consumption in your machines and your plant. The seamless integration of Siemens drives, motors, automation and control products maximizes your investment by allowing faster startup and reduced process downtime to improve system productivity. Siemens offers general purpose low voltage drives for simple applications to modular high performance drives. They also offer packaged drives custom engineered to any specification.