The User Manual of 580 Series General Frequency Converter

9) Service beyond the rated voltage

The frequency converter shall not be beyond the allowable working voltage, the components of the frequency converter may be damaged. If necessary, the related boost device or dropping device shall be used for the voltage transformation of power supply before input into the frequency converter.

10) Change three-phase input into two-phase input

It is not allowed to change three-phase frequency converter into two-phase service, or else, the failure or any damage to the frequency converter may occur.