1 will depend on if the 380V inverter can be set to work with 220V. It'll need the DC bus voltage limits changed to stop it faulting due to too low a voltage.
The output will be configurable for the motor. IIRC you need to set the point at which the voltage gets limited, rather than the current, otherwise you will risk cooking the motor at higher RPM.

2. Have not got a clue, as it's that long since I've configured anything in Mach.