There are many parameters to set for the frequency converter, and each parameter has a certain selection range. During use, it is often encountered that the frequency converter cannot work properly due to improper setting of individual parameters. Therefore, it is necessary to set the relevant parameters correctly.

Since the emergence of automatic induction motors, variable frequency operation has existed in the form of AC generators. Change the speed of the generator and its output frequency. Before the emergence of high-speed transistors, this was one of the main ways to change the motor speed, but the frequency change was limited due to the generator speed reducing the output frequency instead of voltage.

V/F control is a technology used to regulate the speed of AC motors, also known as voltage frequency control. In V/F control, the speed and torque of the motor are controlled by adjusting its voltage and frequency. This control method is widely used in various industrial applications, such as fans, pumps, compressors, etc.