P1-09 Rated motor frequency

Setting range: 25 – 50/6060 Hz (American version only) – 500The adjustable maximum frequency depends on the PWM frequency set in P2-24. It might be necessary to increase P2‑24. Hz

Specifies the rated frequency of the motor connected to the inverter (according to the motor nameplate). This is the frequency at which the maximum (rated) output voltage is applied to the motor. Above this frequency, the voltage applied to the motor remains constant at its maximum value.