YASKAWA inverter generally set deceleration time, torque compensation, electronic thermal overload protection, frequency limit, bias frequency, torque limit, deceleration mode selection, torque vector control, energy saving control etc.. Frequency converter is a kind of power control equipment to control AC motor by changing the frequency of power supply. Frequency converter is mainly composed of rectifier (AC DC converter), filter, inverter (DC AC), brake unit, drive unit, detection unit, micro processing unit and so on. The frequency converter adjusts the output voltage and frequency of the output by the internal IGBT, according to the actual needs of the motor to provide the required power supply voltage, and then achieve the purpose of energy saving and speed regulation.