10. CHARACTERISTICS
10 - 10
10.3.2 Permissible load to motor inertia when the dynamic brake is used
Use the dynamic brake under the load to motor inertia ratio indicated in the following table. If the load inertia
moment is higher than this value, the dynamic brake may burn. If the load to motor inertia ratio exceeds the
indicated value, contact your local sales office.
The values of the permissible load to motor inertia ratio in the table are the values at the maximum rotation
speed of the servo motor.
(a) 200 V class
Servo motor
Permissible load to motor inertia
ratio [multiplier]
Servo motor
Permissible load to motor inertia
ratio [multiplier]
HG-KR053 HG-UR72
HG-KR13 HG-UR152
30
HG-KR23 30 HG-UR202
HG-KR43 HG-UR352
16
HG-KR73 HG-UR502 15
HG-MR053 35 HG-RR103
HG-MR13 HG-RR153
30
HG-MR23 HG-RR203 16
HG-MR43
32
HG-RR353
HG-MR73 HG-RR503
15
HG-SR51 HG-JR53
HG-SR81 HG-JR73
HG-SR121 HG-JR103
HG-SR201
30
HG-JR203
30
HG-SR301 16 HG-JR353 16 (Note 2)
HG-SR421 15 HG-JR503 15 (Note 2)
HG-SR52 HG-JR703 11 (Note 2)
HG-SR102
30
HG-JR903 18 (Note 2)
HG-SR152 HG-JR11K1M
HG-SR202
21
HG-JR15K1M
10 (Note 2)
HG-SR352 HG-JR22K1M 20 (Note 2)
HG-SR502
13 (Note 1)
HG-SR702 5 (Note 1)
Note 1. The permissible load to motor inertia ratio is 15 at the rated rotation speed.
2. The permissible load to motor inertia ratio is 30 at the rated rotation speed.
(b) 400 V class
Servo motor
Permissible load to motor inertia
ratio [multiplier (×1)]
Servo motor
Permissible load to motor inertia
ratio [multiplier (×1)]
HG-SR524 5 (15) HG-JR534
HG-SR1024 HG-JR734
HG-SR1524
5 (17)
HG-JR1034
HG-SR2024 HG-JR1534
HG-SR3524 HG-JR2034
30 (30)
HG-SR5024
5 (15)
HG-JR3534 20 (30) (Note)
HG-SR7024 HG-JR5034 15 (30)
HG-JR7034 11 (30)
HG-JR9034 18 (30)
HG-JR11K1M4
HG-JR15K1M4
10 (30)
HG-JR22K1M4 20 (30)
Note. When the maximum torque is increased to 400%, the permissible load to motor inertia ratio at the maximum speed
of the servo motor is 25 times.
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