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6. CHARACTERISTICS
6. CHARACTERISTICS
6.1 Electromagnetic brake characteristics
CAUTION
Configure the electromagnetic brake circuit so that it is activated not only by the
servo amplifier signals but also by an external emergency (forced) stop signal.
Contacts must be open when
servo-on signal is off, when an
alarm (trouble) is present and when
an electromagnetic brake signal.
Electromagnetic brake
Circuit must be
opened during
emergency (force) stop.
SON RA
EMG(EM1)
24VDC
Servo motor
The electromagnetic brake is designed to hold a load. Do not use it for braking.
The characteristics of the electromagnetic brake provided for the servo motor with electromagnetic
brake are indicated below:
Table 6.1 Electromagnetic Brake Characteristics
HC-MF Series
HC-MFS Series
HA-FF Series
Servo Motor
Item
053B
13B 23B 43B 73B 053B 13B 23B 33B 43B 63B
Type (Note 1) Spring-loaded safety brake
Rated voltage (Note 4)
24V
0
10%
DC
Power consumption [W]20 (68 ) 6.3 7.9 9 7 7.4 11
[N m] 0.32 1.3 2.4 0.39 1.18 2.3
Brake static friction
torque
[oz
in] 45.3 184.2 340 55.3 167 326
Release delay time (Note 2) [s] 0.03 0.03 0.03 0.03 0.03 0.03
Braking delay time [s]
(Note 2)
DC off 0.01 0.02 0.03 0.01 0.03 0.03
[J] 5.6 22.0 64.0 3.9 18.0 46.0
Per braking
[oz
in] 793.6 3117.6 9069.3 552.7 2550.7 6518.6
[J] 56 220 640 39 180 460
Permissible braking work
Per hour
[oz
in] 7936 31176 90693 5527 25507 65186
Brake looseness at servo motor shaft [degrees]
(Note 5)
0.19 to 2.5 0.12 to 1.2 0.1 to 0.9 0.3 to 3.5 0.2 to 2.0 0.2 to 1.3
Number of braking
cycles [times]
20000 20000 20000 30000 30000 30000
[J] 4 15 32 4 18 47
Brake life (Note 3)
Work per
braking
[oz
in] 567 2126 4535 567 2551 6660