Mitsubishi Electric MELDAS MDS-R Series Specifications And Instruction Manual page 92

(2) Magnetic brake characteristics
Item
Type (Note 1)
Rated voltage
Rated current at 20°C
Capacity
Static friction torque
Inertia (Note 2)
Release delay time (Note 3)
Braking delay
time (Note 3)
Tolerable
braking work
amount
Brake play at motor axis
(Note 7)
Brake life
(Note 4)
Notes:
1. There is no manual release mechanism. If handling is required such as during the machine core
alignment work, prepare a separate 24VDC power supply, and electrically release a brake.
2. These are the values added to the servomotor without a brake.
3. This is the representative value for the initial attraction gap at 20C.
4. The brake gap will widen through brake lining wear caused by braking. However, the gap cannot
be adjusted. Thus, the brake life is considered to be reached when adjustments are required.
5. A leakage flux will be generated at the shaft end of the servomotor with a magnetic brake.
6. When operating in low speed regions, the sound of loose brake lining may be heard. However, this
is not a problem in terms of function.
7. This is the main default value, and is not a guaranteed value.
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Motor type
（ A ）
（ W ）
（ N ･ m ）
（ kg ･ cm
（ s ）
（ s ）
DC OFF
（ J ）
Per braking
（ J ）
Per hour
（ degree ）
No. of braking
（ times ）
operations
Work amount
（ J ）
per braking
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3. Characteristics
HF75B, HF105B,
Spring closed non-exciting operation magnetic brakes
(for maintenance and emergency braking)
0.38
9
2.4
2 ）
0.2
0.03
0.03
64
640
0.1 ～ 0.9
20000
32
3 - 9
HF54B, HF104B,
HF154B, HF224B, HF204B, HF354B,
HF123B, HF223B, HF303B, HF302B
HF142B
DC24V
0.8 1.4
19 34
8.3 43.1
2.2 9.6
0.04 0.1
0.03 0.03
400 4500
4000 45000
0.2 ～ 0.6 0.2 ～ 0.6
20000 20000
200 1000