Mitsubishi Electric MR-E A Series Instruction Manual page 233

14. SERVO MOTOR
14.7 Characteristics
14.7.1 Electromagnetic brake characteristics
CAUTION
(1) Characteristics
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Though the brake lining may rattle during operation, it poses no functional problem.
A leakage magnetic flux will occur at the shaft end of the servo motor equipped with electromagnetic
brake.
Item
(Note 1)
(Note 4)
Rated current at 20 (68 )
Excitation coil resistance at
20 (68 )
Capacity
Static friction torque
(Note 2) Release delay time
Braking delay time
(Note 2)
Permissible braking
work
Brake looseness at servo motor shaft
(Note 5)
Brake life (Note 3)
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
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. 24VDC of the power output for interface (VDD) cannot be used. Always use a separate power supply.
5. The above values are typical initial values and not guaranteed values.
Configure the electromagnetic brake operation circuit so that it is activated not
only by the servo amplifier signals but also by an external emergency stop signal.
Refer to Section 3.9 for details.
The electromagnetic brake is designed to hold a load. Do not use it for braking.
(Note 5) Servo Motor
52B to 152B
Type
Rated voltage
[A] 0.8
29
[ ]
[W] 19
[N m] 8.3
[oz in] 1176
[S] 0.04
AC off (Fig. a) 0.12
[s] DC off (Fig.s b, c)
0.03
Per [J] 400
braking [oz in]
56683.3
Per [J] 4000
hour
[oz in] 566833
0.2 to 0.6
[degrees]
Number of braking
20000
cycles [times]
Work per [J] 200
braking
[oz in] 28342
(68 ).
HC-SFE Series
202B
Spring-loaded safety brake
24V
1.4
16.8
34
43.1
6103
0.1
0.12
0.03
4500
637687.1
45000
6376871
0.2 to 0.6 0.19 to 2.5
20000
1000
141708
14 - 26
HC-KFE Series
13B 23B 43B
0
DC
10%
0.26 0.33
9.1 73
6.3 7.9
0.32 43.1
45 6108
0.03 0.1
0.08 0.12
0.01 0.03
5.6 22.0
793.6 3117.6
56 220
7936 31176
0.12 to 1.2
20000 20000
4 15
567 2124.18
73B
0.42
57
9
2.4
340
0.03
0.12
0.03
64.0
9069.3
640
90693
0.1 to 0.9
20000
32
4535