A: It's better not to exceed the third levels for the big drive control small motor. The main reason is that the self-learning of motor parameters is not accurate, and VF will be better. But our VF is vectorized, which is also related to the motor parameters. So please use VF control, try to get rid of the influence of vector control, please start from the following directions:
(1) The rated parameters of the motor are set correctly
(2) Set the slip compensation factor P04.09=0
(3) Adjust the low speed and high-speed oscillation suppression factor properly, generally to set it bigger (fine-tune), to see the effect
(4) Carrier frequency can be increased, such as 2K ~ 4K