ima little unsure about the amps to run this motor.its says the rated current/phase (amps dc) is 6.3. it says the number of phases is 4,and the holding torque with 2 phases on is 4.5 n.m. do the amps have to be multiplied by 4 or by 2 or is 6.3 the rating i need to set my drive to.any help would be greatly appreciated. thanks