10 USING A DIRECT DRIVE MOTOR
10.5 Characteristics
291
10
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
*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
*1 The value inside ( ) applies when the torque is increased.
Servo amplifier
Power supply capacity [kVA]
MR-J5W2-22G
Total power supply capacity of all direct drive motors to be connected (A)
MR-J5W2-44G
MR-J5W2-77G
MR-J5W2-1010G
MR-J5W3-222G
MR-J5W3-444G
Direct drive motor
Power supply capacity [kVA] (A)
TM-RFM002C20
0.25
TM-RFM004C20
0.38
TM-RFM006C20
0.53
TM-RFM006E20
0.46
TM-RFM012E20
0.81
TM-RFM018E20
1.3
TM-RFM012G20
0.71
TM-RFM040J10
1.2
TM-RG2M002C30
0.25
TM-RU2M002C30
0.25
TM-RG2M004E30
0.5 (0.7)
TM-RU2M004E30
0.5 (0.7)
TM-RG2M009G30
0.9
TM-RU2M009G30
0.9
Содержание MR-J5 Series
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