We use an external potentiometer to adjust the frequency. How to connect the wires? How to set the parameters?
There are three wiring holes on the potentiometer. The middle wire hole is connected to the inverter VI terminal, the Z1 wire hole is connected to the inverter 10 Voltage terminal, and the Z2 wire hole isconnected to the inverter GND terminal.        

Now we set the inverter parameters, press the PROG key, press the shift key, rotate the knob to adjust to parameter P00.03, press the knob to confirm, the default value is 4, rotate the knob to 2, press the knob to confirm, and END is displayed, indicating that the parameter setting of the external potentiometer has been completed.

Now we can adjust the frequency of the inverter through the external potentiometer.