8. What is the difference between a U/F control and a vector control?

A detailed comparison of the various advantages and disadvantages of the frequency inverter control variants is very comprehensive, so we would just like to summarise them here:

To summarise, V/f control and vector control demonstrate different strategies for motor control. V/f control maintains a fixed voltage to frequency ratio, while vector control introduces phase control to improve transient performance. Both systems have their advantages and the choice depends on the requirements of the application. LS frequency inverters are generally preset to vector operation. The U/F control variant can be easily changed in the frequency inverter menu.