Electromagnetic Brake Characteristics (Hg-Ur) - Mitsubishi Electric HG-MR Instruction Manual

10. HG-UR SERIES
10.4 Electromagnetic brake characteristics
CAUTION
The characteristics of the electromagnetic brake provided for the servo motor with an electromagnetic brake
are indicated below.
Item
Type (Note 1)
Rated voltage (Note 4)
Power consumption
Coil resistance (Note 6)
Inductance (Note 6)
Brake static friction torque
Release delay time (Note 2)
Braking delay time (Note 2)
Permissible braking work
Brake looseness at servo motor shaft (Note 5)
Brake life (Note 3)
Selection example of surge absorbers to
be used (Note 7, 8)
Note 1. There is no manual release mechanism. When it is necessary to hand-turn the servo motor shaft for machine centering,
etc., use a separate 24 V DC power supply to release the brake electrically.
2. The value for initial on gap at 20 °C.
3. The brake gap will increase as the brake lining wears, but the gap is not adjustable.
The brake life indicated is the number of braking cycles after which adjustment will be required.
4. Always prepare a power supply exclusively used for the electromagnetic brake.
5. These are design values. These are not guaranteed values.
6. These are measured values. These are not guaranteed values.
7. Select the electromagnetic brake control relay properly, considering the characteristics of the electromagnetic brake and
surge absorber. When you use a diode for a surge absorber, the electromagnetic braking time will be longer.
8. Manufactured by Nippon Chemi-Con Corporation.
The electromagnetic brake is provided to prevent a drop at a power failure or
alarm occurrence during vertical drive or to hold a shaft at a stop. Do not use it for
normal braking (including braking at servo-lock).
Before operating the servo motor, be sure to confirm that the electromagnetic
brake operates properly.
The operation time of the electromagnetic brake differs depending on the power
supply circuit you use. Be sure to check the operation delay time with a real
machine.
[s] DC off
Per braking
Per hour
Number of braking
cycles
Work per braking
For the suppressed
voltage 125 V
For the suppressed
voltage 350 V
Servo motor
72B/152B
Spring actuated type safety brake
[W] at 20 °C 19
[Ω] 29.0
[H] 0.8
[N•m] 8.5
[s] 0.04
0.03
[J] 400
[J] 4000
[degrees] 0.2 to 0.6
20000
[times]
[J] 200
10 - 5
HG-UR series
202B/352B/502B
0
24 V DC
-10%
34
17.0
1.17
44
0.1
0.03
4500
45000
0.2 to 0.6
20000
1000
TND20V-680KB
TND10V-221KB