1 INTRODUCTION
1.2 Combination with converter units and drive units
11
1
1.
Use the following formula to calculate the running power and regenerative power of each servo motor from the servo
motor speed and torque.
Running power and regenerative power [W] = Servo motor speed [r/min] × Torque [N•m]/9.55
2.
Calculate the total output power of the servo motors from the running power and regenerative power of each servo
motor.
• The effective value of the total servo motor output power [kW]
MR-CV18K4 or more
• Maximum value of the total servo motor output power [kW] × 1.2 = 21 kW × 1.2 = 25.2 kW
MR-CV11K4 or more
• Total drive unit width = 75 mm (MR-J5D2-700G4) + 60 mm (MR-J5D3-200G4) = 135 mm
≤
1500 mm
Therefore, the power regeneration converter unit selected should be the "MR-CV18K4".
1 kW
1 kW
-3 kW
0.2 s
0.1 s
0.1 s
0.1 s
0.1 s
0.3 s
0.3 s
0.2 s
0.3 s
0.2 s
0.2 s
0.3 s
0.2 s
0.2 s
0.1 s
0.1 s
0.2 s
0.2 s
0.1 s
0.1 s
0.1 s
0.1 s
0.3 s
0.1 s
0.1 s
0.1 s
0.1 s
12 kW
9 kW
7 kW
7 kW
3 kW
-5 kW
4 kW
-4 kW
6 kW
0.1 s
0.2 s
-3 kW
21 kW
HK-ST5024M
HK-ST2024M
HK-ST2024M
0.1 s
0.1 s
0.7 s
0.1 s
0.1 s
6 kW
15 kW
0.1 s
0.2 s
4 kW
HK-ST7024M
0.7 s
4 kW
2 kW
2 kW
4 kW
2 kW
2 kW
2 kW
0.1 s
-4 kW
-4 kW
HK-ST2024M
0.2 s
1 kW
Total output power
of the servo motors
Add up all the servo motor outputs
Running
power
Regenerative
power
Running
power
Regenerative
power
Running
power
Regenerative
power
Running
power
Regenerative
power
Running
power
Regenerative
power
Running
power
Regenerative
power
(21
2
× 0.1 + 12
2
× 0.1 + 9
2
× 0.1 + 7
2
× 0.1 + 3
2
× 0.1 + (-5)
2
× 0.1 + 7
2
× 0.2 + 1
2
× 0.1)/1.2 = 8.4 kW
n = 1
(P
n
× t
n
)/T
N
2
=
=
(Pn: power running/regenerative power (kW), tn: power output time (s), T: one cycle time (s))
