For bigger antennas most of the time three phase motors are used. These are connected to frequency inverters which are the high power interface between the sat-nms ACU-ODM module and the motors. Please take into account that some of the frequency inverter parameters are motor dependent and that these have to be changed to your specific antenna motors.

The following chapters give a short overview of the frequency-inverters operation. If you need more detailed informations, please refer to the manual of the frequency inverters.