It is virtually unheard of for a Industrial machine to feed the control separately, it is normally taken care of automatically in the enclosure.
If the machine is dual voltage, there will be taps on the input transformer.
If it has this arrangement, then the fuses in the disconnect may have to be lowered.
If it has a NFB, non-fused breaker disconnect then there is not much you can do about it.
If no taps are present then you will need an external transformer.
Are you sure it is not already 460?