Electromagnetic Brake Characteristics - Mitsubishi Electric Melservo HF-KN Series Instruction Manual

6. HF-KN SERIES

6.4 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
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
4. Always prepare a power supply exclusively used for the electromagnetic brake.
5. These are initial values. These are not guaranteed values.
6. These values are measured values and not guaranteed values.
7. Select the electromagnetic brake control relay properly, considering the characteristics of the
8. Manufactured by Nippon Chemi-Con Corporation.
The electromagnetic brake is provided to prevent a drop at a power failure or
servo 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
machine centering, etc., use a separate 24 V DC power supply to release the brake electrically.
indicated is the number of braking cycles after which adjustment will be required.
electromagnetic brake and surge absorber.
Servo motor
13B(J)
[W] at 20 °C
[Ω]
[H]
[N•m]
[s]
Per braking [J]
Per hour [J]
[degrees]
Number of brakings
[times]
Work per braking [J]
For the suppressed
voltage 125 V
For the suppressed
voltage 350 V
6 - 4
HF-KN series
23B(J) 43B(J)
Spring actuated type safety brake
0
24 V DC
-10%
6.3 7.9
91.0 73.0
0.15 0.18
0.32 1.3
0.03 0.03
0.01 0.02
5.6 22
56 220
2.5 1.2
20000
5.6 22
TND20V-680KB
TND10V-221KB
73BJ
10
57.0
0.13
2.4
0.04
0.02
64
640
0.9
64