Mitsubishi Electric MELSERVO HF-MP User Manual

8 - 12
8. HA-LP SERIES
8.3 Electromagnetic brake
CAUTION
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 performing the operation, 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.
The characteristics of the electromagnetic brake provided for the servo motor with an electromagnetic brake
are indicated below.
HA-LP series
Servo motor
Item
801B 12K1B
11K1MB
15K1MB
15K2(4)B
22K2(4)B
601B
701MB
11K2(4)B
Type (Note 1) Spring-loaded safety brake
Rated voltage (Note 4)
24V
0
10%
DC
Capacity [W] at20
(68
) 46 30
Coil resistance (Note 6) [ ] 12.4 19.0
Inductance (Note 6) [H] 2.96 3.12
[N m] 160.5 82
Brake static friction torque
[oz
in] 22700 11600
Release delay time (Note 2) [s] 0.3 0.25
Braking delay
time (Note 2)
[s] DC off 0.04 0.04
Per braking [J] 5000 3000 Permissible braking
work
Per hour [J] 50000 30000
Brake looseness at servo motor shaft (Note 5) [degrees] to 0.8 to 0.8
Number of braking cycles [times] 20000 20000
Brake life (Note 3)
Work per braking [J] 3000 1000
For the suppressed voltage 125V TND20V-680KB
Selection example of
surge absorbers to
be used (Note 7, 8)
For the suppressed voltage 350V TND10V-221KB
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 24VDC power supply to release the brake electrically.
2. The value for initial ON gap at 20
(68
).
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. The above values are typical initial values and 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 electromagnetic brake and surge
absorber.
8. Manufactured by Nippon Chemi-Con Corporation.

Mitsubishi Electric MELSERVO HF-MP Specifications

General

Brand	Mitsubishi Electric
Model	MELSERVO HF-MP
Category	Engine
Language	English