U/f
The U/f control mode is for simple controlled operation of asynchronous motors without encoder feedback and motors with LSPM technologyIn preparation.
provided by SEW-EURODRIVE. The procedure operates an asynchronous machine on a parameterizable voltage/frequency characteristic. To keep the magnetizing current on a constant level, the voltage (U) is adjusted in proportion to the frequency (f).
The actual slip is estimated and can be compensated.
The U/f control mode is suitable for applications with a limited speed setting range, where no dynamic step changes in load occur and where there are low requirements regarding the control characteristics.
The U/f control mode is suitable for group drives. A group drive is an electrical parallel connection of several identical or different motors at one inverter. The motors do not have a rigid mechanical connection.
