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13. CHARACTERISTICS
Use the dynamic brake at the load inertia moment indicated in the following table. If the load inertia
moment is higher than this value, the built-in dynamic brake may burn. If there is a possibility that the
load inertia moment may exceed the value, contact Mitsubishi.
13.4 Encoder cable flexing life
The flexing life of the cables is shown below. This graph calculated values. Since they are not guaranteed
values, provide a little allowance for these values.
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Table 13.2 HA-FF Dynamic Brake Time Constant
Servo Motor
HA-FF053 13
HA-FF23
HA-FF33
HA-FF43
HA-FF63
Servo Amplifier
MR-J2-10C
to
MR-J2-200C
MR-J2-350C
1×10
8
5×10
7
1×10
7
5×10
6
1×10
6
5×10
5
1×10
5
5×10
4
1×10
4
5×10
3
1×10
3
4
7
10
(0.16)
(0.28)
(0.39)
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Brake Time Constant [s]
0.02
0.05
0.07
0.09
0.12
Load Inertia Moment Ratio [times]
30
16
a
b
20
40
70
100
200
(0.79)
(1.57)
(2.76)
(3.94)
(7.87)
Flexing radius [mm(in.)]
13 - 7
a : Long flexing-life encoder cable
MR-JCCBL M-H
MR-JHSCBL M-H
MR-ENCBL M-H
b : Standard encoder cable
MR-JCCBL M-L
MR-JHSCBL M-L
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