Power Supply Capacity And Generated Loss [Wg] - Mitsubishi Electric MELSERVO-J5 User Manual

Power supply capacity and generated loss [WG]

Calculate the generated loss and the power supply capacity of the servo amplifier under rated load by referring to this section.
The calculated value will vary depending on the number of connected direct drive motors and the capacities of the direct drive
motors. For thermal design of an enclosed type cabinet, use the values calculated in consideration for the worst operating
conditions. The actual amount of generated heat depends on the frequency of operation and will be between the "At rated
output" and "At servo-off" values. When the direct drive motor is run at less than the rated speed, the power supply capacity
will be smaller than the calculated value, but the servo amplifier's generated heat will not change.
Calculation method of power supply capacity
Calculate the power supply capacity for one servo amplifier from the following tables.
■Power supply capacity for one servo amplifier at rated output
Servo amplifier
MR-J5W2-22G_
MR-J5W2-44G_
MR-J5W2-77G_
MR-J5W2-1010G_
MR-J5W3-222G_
MR-J5W3-444G_
*1 The power supply capacity will vary according to the power impedance. This value is applicable when the power factor improving reactor
is not used.
■Servo amplifier power supply capacity for one direct drive motor
Direct drive motor
TM-RFM002C20
TM-RFM004C20
TM-RFM006C20
TM-RFM006E20
TM-RFM012E20
TM-RFM018E20
TM-RFM012G20
TM-RFM040J10
TM-RG2M002C30
TM-RU2M002C30
TM-RG2M004E30
TM-RU2M004E30
TM-RG2M009G30
TM-RU2M009G30
*1 The value inside ( ) applies when the torque is increased.
11 USING A DIRECT DRIVE MOTOR
424
11.5 Characteristics
Power supply capacity [kVA]
Total power supply capacity of all direct drive motors to be connected (A)
Power supply capacity [kVA] (A)
0.25
0.38
0.53
0.46
0.81
1.3
0.71
1.2
0.25
0.25
0.5 (0.7)
0.5 (0.7)
0.9
0.9
*1
*1