You must be getting the fault F008 on load. The 2 phase supply will not be able to supply the required power of the load. if the load is very less, it will work.

When you give only 2 phase supply the DC is build up and the drive is ready for operation. As you increase the load the DC voltage will start fluctuation. At a point the fluctuation will be so high that the undervoltage level will be reached and the drive will trip.

Thanks

I need to know the pcc card firing the thyristor to work on two phase or not work and must connect the three phase