
2.SPECIFICATIONSA-72562EN-027
- 3 -
(3) It is recommended that a capacitor unit for power-factor improvement is not be
installed. This is because the capacitor unit for power-factor improvement may
adversely affect power regeneration.
(4) The rated output of the motor is guaranteed for the rated input voltage. If the
input voltage changes, the rated output may not appear even when the input
voltage change is within the allowable range.
[How to calculate the power equipment capacity]
-Output Capability
The rated output capability is the rated output of the spindle motors times 1.15,
plus the total continuous rated output of the servo motors times 0.6.
-Power Equipment Capacity
SVPM*-5.5i
Power Equipment Capacity (kVA)= Output Capability (kW)x1.64
SVPM*-11i
Power Equipment Capacity (kVA)= Output Capability (kW)x1.55
SVPM*-15i
Power Equipment Capacity (kVA)= Output Capability (kW)x1.47
[How to calculate the input current of the PSM]
Calculate the input current of the SVPM by using the formula below.
Refer to the result when selecting the MCC, power cable, and circuit breaker, to be
connected to the SVPM input section.
(Margin for selection: 1 to 1.5 times)
(margin) 1.2
(Vrms) tagesupply vol Nominal 33
(kVA)capacity equipment Power
(Arms)current input PSM ×
×
=
(Under normal conditions, assume that the nominal supply voltage (Vrms) is 200
Vrms.)