this equipment works excellent, just you need to know something about electrical knowledge, to me is clear but many people want to install for theirselves, and they not know what is frecuency, what torque is, how is related frecuency with speed of the motor, what is voltage, what is current power and horse power, why you should connect the motor directly to the VFD not thourg contactors, all this issues i have face with people that wants to install this equipment, and the big issue with the especialized technician is taht they want this equipent has the same process of configuration of a Siemen or ABB.