Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 248

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
(b) MR-J4-DU_
Table 5.2 Power supply capacity and generated heat per servo motor at rated output
Converter unit Drive unit
MR-J4-DU30K_
MR-CR55K
MR-J4-DU37K_
MR-J4-DU30K_4
MR-J4-DU37K_4
MR-CR55K4
MR-J4-DU45K_4 HG-JR45K1M4
MR-J4-DU55K_4 HG-JR55K1M4
Note. The heat generated by the drive unit is indicated in the left term within the parentheses, and the heat generated by the converter
unit in the right term.
Power supply capacity
[kVA]
Power factor
Servo motor
improving
DC reactor
is not used
HG-JR30K1
48
HG-JR30K1M
HG-JR37K1
59
HG-JR37K1M
HG-JR30K14
48
HG-JR30K1M4
HG-JR37K14
59
HG-JR37K1M4
71
87
Drive unit-generated heat [W] (Note)
Power factor
improving
At rated output
DC reactor
is used
40 1350 (900 + 450)
49 1550 (1000 + 550)
40 1070 (790 + 280)
49 1252 (910 + 342)
59 1580 (1110 + 470)
72 1940 (1440 + 500)
5 - 47
At rated output
[Generated heat
in the cabinet
With servo-off
when cooled
outside the
cabinet]
470
550
390
60 (30 + 30)
470
550
650
Area
required
for heat
dissipation
[m 2 ]
27.0
31.0
21.4
25.1
31.6
38.8