Power Supply Capacity And Generated Loss [Wg] - Mitsubishi Electric MR-J5 Series 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 will be intermediate between values at rated output and servo-off according
to the duty used during operation. 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 supply 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.
*1
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
10 USING A DIRECT DRIVE MOTOR
291
10.5 Characteristics
10