Characteristics; Electromagnetic Brake Characteristics - Mitsubishi Electric GENERAL PURPOSE AC SERVO MR-E- A/AG Instruction Manual

14. SERVO MOTOR

14.7 Characteristics

14.7.1 Electromagnetic brake characteristics

CAUTION
(1) Characteristics
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.
(Note 5) Servo Motor
Item
Type
(Note 1)
Rated voltage
(Note 4)
Rated current at 20 (68 )
Excitation coil resistance at
20 (68 )
Capacity
Static friction torque
(Note 2) Release delay time
AC off
Braking delay time
[s] DC off (Fig.s b, c)
(Note 2)
Per
braking [oz in]
Permissible braking
work
Per
hour
Brake looseness at servo motor shaft
(Note 5)
Number of braking
cycles
Brake life (Note 3)
Work per
braking
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.
HC-SFE Series
52B to 152B
[A] 0.8
29
[ ]
[W] 19
[N m] 8.3
[oz in] 1176
[S] 0.04
(Fig. a) 0.12
0.03
[J] 400
56683.3
[J] 4000
[oz in] 566833
0.2 to 0.6
[degrees]
20000
[times]
[J] 200
[oz in] 28342
(68 ).
202B 13B
Spring-loaded safety brake
0
24V DC
10%
1.4 0.26
16.8 9.1
34 6.3
43.1 0.32
6103 45
0.1 0.03
0.12 0.08
0.03 0.01
4500 5.6
637687.1 793.6
45000 56
6376871 7936
0.2 to 0.6 0.19 to 2.5
20000 20000
1000 4
141708 567
14 - 26
HC-KFE Series
23B 43B 73B
0.33 0.42
73 57
7.9 9
43.1 2.4
6108 340
0.1 0.03
0.12 0.12
0.03 0.03
22.0 64.0
3117.6 9069.3
220 640
31176 90693
0.12 to 1.2 0.1 to 0.9
20000 20000
15 32
2124.18 4535