Magnetic Brake Characteristics - Mitsubishi CNC Meldas HC Series Specification Manual

4-1-2 Magnetic brake characteristics

Item
Type (Note 1)
Rated voltage
Rated current at 20°C
Excitation coil resistance at 20°C
Capacity
Attraction current
Dropping current
Static friction torque
J
Moment of inertia
(Note 2)
GD
Release delay time (Note 3)
Braking delay time (sec)
(Note 3)
Tolerable
Per braking
braking
work
Per hour
amount
Brake play at motor axis
No. of braking operations (times)
Brake life
Braking amount
(Note 4)
per braking
Notes:
1. There is no manual release mechanism. If handling is required such as during the machine core alignment
work, prepare a separate 24 VDC power supply, and electrically release the brakes.
2. These are the values added to the servomotor without brakes.
3. This is the value for 20°C at the initial attraction gap.
4. The brake gap will widen through brake lining wear caused by braking. However, the gap cannot be adjusted.
Thus, the brake life is reached when adjustments are required.
5. The internal power output (CN3: VDD) 24VDC for the MDS-B-SVJ2 servo amplifier's digital output cannot be
used. Always prepare a separate power supply.
6. A leakage flux will be generated at the shaft end of the servomotor with magnetic brakes.
7. When operating in low speed regions, the sound of loose brake lining may be heard. However, this is not a
problem in terms of function.
Chapter 4 Characteristics
Table 4-1 Magnetic brake characteristics
Motor type
52B to 152B
53B to 153B
(A) 0.80
(Ω)
(W)
(A) 0.2
(A) 0.08
(N·m) 8.3
(kgf·cm) 85.0
2
(kg·cm ) 2.0
2
(kgf·cm·sec ) 0.002
2 2
(kgf·cm ) 8.0
(sec)
0.04
AC OFF (sec) 0.12
DC OFF (sec) 0.03
(N·m) 400
(kgf·cm) 4,082
(N·m) 4,000
(kgf·cm) 40,816
(deg.) 0.2 ~ 0.6
20,000
(N·m) 200
(kgf·cm) 2,041
∗∗ Series ∗∗ ∗∗
HC∗∗
202B to 902B
203B to 703B
Spring braking type safety brakes
1.43
29 16.8
19 34
0.4
0.2
43.1
440
10
0.0102
40
0.1
0.12
0.03
4,500
46,000
45,000
460,000
0.2 ~ 0.6
20,000
1,000
10,204
4–3
∗∗ ∗∗ ∗∗R Series
HC∗∗
103RB to 203RB 353RB to 503RB
24 VDC
0.80
30
19
0.25
0.085
6.8
70.0
0.4
0.0004
1.6
0.03
0.12
0.03
400
4,082
4,000
40,816
0.2 ~ 0.6
20,000
200
2,041
0.96
25
23
0.24
0.10
16.7
170
3.5
0.0036
14
0.04
0.12
0.03
400
4,082
4,000
40,816
0.2 ~ 0.6
20,000
200
2,041