Power Supply Capacity And Generated Loss - Mitsubishi Electric MELSERVO-J4 series Instruction Manual

15. USING A DIRECT DRIVE MOTOR

15.4.2 Power supply capacity and generated loss

Table 15.1 indicates servo amplifiers' power supply capacities and losses generated under rated load. For
thermal design of an enclosed type cabinet, use the values in the table in consideration for the worst
operating conditions. The actual amount of generated heat will be intermediate between values at rated
torque and servo-off according to the duty used during operation. When the servo motor is run at less than
the rated speed, the power supply capacity will be smaller than the value in the table, but the servo
amplifier's generated heat will not change.
Table 15.1 Power supply capacity and generated loss per direct drive motor at rated output
Servo motor
TM-RFM002C20
TM-RFM004C20
TM-RFM006C20
TM-RFM006E20
TM-RFM012E20
TM-RFM018E20
TM-RFM012G20
TM-RFM048G20
TM-RFM072G20
TM-RFM040J10
TM-RFM120J10
TM-RFM240J10
Power supply Servo amplifier-generated heat [W]
capacity [kVA]
At rated output
0.25
0.38
0.53
0.46
0.81
1.3
0.71
2.7
3.8
1.2
3.4
6.6
15 - 19
With servo-off
25 15
35 15
40 15
40 15
50 15
50 15
50 15
90 20
110 20
50 15
90 20
160 25
Area required for heat
2
dissipation [m ]
0.5
0.7
0.8
0.8
1.0
1.0
1.0
1.8
2.2
1.0
1.8
3.2