2. How is the motor connected to a 1-phase frequency inverter?

Mistakes often happen here. The single-phase frequency inverter converts the voltage from 1 x 230V to 3 x 230V. If it is a 230V/400V motor, i.e. predominantly in the performance class up to 0.09kW - 3kW, the drive must be connected from star to delta. To clarify this, we have created a short video: