How can a variable speed multi - speed three - phase asynchronous motor be controlled by a frequency converter?
Yes, but it is not necessary, if it is old motor that is another matter, tell you that you can use, but can not be in the frequency conversion process for the pole, this will cause the inverter protection or failure
Although the waste, but can be used, we use the frequency band with two-speed motor when the output is connected to the fast three terminals, you can refer to the next
With the inverter control, then you do not need multi-speed motor, because the inverter can directly control the motor speed, if the two together, the formation of a waste.
