Power Supply Capacity And Generated Loss - Mitsubishi Electric MR-J4W2-0303B6 Instruction Manual

14. USING A LINEAR SERVO MOTOR

14.4.2 Power supply capacity and generated loss

Calculate the generated loss and the power supply capacity of the servo amplifier under rated load from (1)
and (2) in this section. The calculated value will vary depending on the number of connected linear servo
motors and the capacities of the linear servo 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 torque and servo-off according to the duty used during
operation. When the linear servo 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.
(1) Calculation method of power supply capacity
Calculate the power supply capacity for one servo amplifier from tables 14.1 and 14.2.
Calculate the power supply capacity with equation 10.1 in (1) in section 10.2.
Table 14.1 Power supply capacity for
one servo amplifier at rated output
Servo amplifier
Power supply capacity
MR-J4W2-22B
MR-J4W2-44B
Total power supply
MR-J4W2-77B
capacity of connected
linear servo motors ((A)
MR-J4W2-1010B
in table 14.2)
MR-J4W3-222B
MR-J4W3-444B
Note. 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.
Table 14.2 Servo amplifier power supply
capacity for one linear servo motor
(Note)
Linear servo motor
[kVA]
LM-H3P2A-07P-BSS0
LM-H3P3A-12P-CSS0
LM-H3P3B-24P-CSS0
LM-H3P3C-36P-CSS0
LM-H3P7A-24P-ASS0
LM-U2PAB-05M-0SS0
LM-U2PAD-10M-0SS0
LM-U2PAF-15M-0SS0
LM-U2PBB-07M-1SS0
LM-U2PBD-15M-1SS0
LM-U2PBF-22M-1SS0
LM-K2P1A-01M-2SS1
LM-K2P2A-02M-1SS1
14 - 29
Power supply capacity
[kVA]
(A)
0.9
0.9
1.3
1.9
1.3
0.5
0.9
0.9
0.5
1.0
1.3
0.9
1.3