Power Supply Capacity And Generated Loss - Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series Instruction Manual

7.2

Power supply capacity and generated loss

Generated heat of the power regeneration converter unit and drive unit
The following tables indicate the generated loss under rated load and the power supply capacity per combination of the power
regeneration converter unit and drive unit.
Power regeneration
converter unit
MR-CV55K4
Drive unit
MR-J4-DU45KB4-RJ100
MR-J4-DU55KB4-RJ100
The power supply capacity and generated heat for parallel drive systems are obtained by multiplying the listed values by the
number of sets of combined power regeneration converter units and drive units required to drive a servo motor. The power
supply capacity will be lower than the listed values when the output wattage of the servo motor driven by the drive unit
connected to the power regeneration converter unit is lower than the converter capacity.
The servo motor requires 2 times to 3 times greater instantaneous power for acceleration, and therefore, use the power
supply which ensures that the voltage lies within the permissible voltage fluctuation at the main circuit power supply terminals
(L1/L2/L3) of the power regeneration converter unit. The power supply capacity will vary according to the power supply
impedance.
The actual generated heat falls within the ranges at rated output and at servo-off according to the frequencies of use during
operation. When designing an enclosed cabinet, use the values in the table, considering the worst operating conditions.
7 CHARACTERISTICS
56
7.2 Power supply capacity and generated loss
Power supply Generated heat of power regeneration converter unit [W]
capacity [kVA]
At rated output
78 596
Generated heat of drive unit [W]
At rated output
1110
1440
At rated output
[Generated heat in
the cabinet when
cooled outside the
cabinet]
164
At rated output With servo-off
[Generated heat in the
cabinet when cooled
outside the cabinet]
216 30
216 30
Area required for
heat dissipation
With servo-off
2
[m ]
30 12.0
Area required for heat
dissipation [m
22.2
28.8
2
]