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13 CHARACTERISTICS
13.4 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.
1 10
5 10
1 10
5 10
1 10
5 10
1 10
5 10
1 10
5 10
1 10
13.5 Inrush currents at power-on of main circuit and control circuit
The following table indicates the inrush currents (reference data) that will flow when the maximum permissible
voltage (200VAC class: 253VAC) is applied at the power supply capacity of 2500kVA and the wiring length of
1m.
Servo Amplifier
MR-J3-10T to 60T
MR-J3-70T 100T
MR-J3-200T 350T
MR-J3-10T1 to 40T1
MR-J3-500T
MR-J3-700T
MR-J3-11KT
MR-J3-15KT
MR-J3-22KT
Since large inrush currents flow in the power supplies, always use no-fuse breakers and magnetic contactors.
(Refer to section 14.10.)
When circuit protectors are used, it is recommended to use the inertia delay type that will not be tripped by an
inrush current.
8
7
7
6
6
5
5
4
4
3
3
4
7
10
20
Flexing radius [mm]
Main circuit power supply (L
30A (Attenuated to approx. 5A in 10ms)
54A (Attenuated to approx. 12A in 10ms)
120A (Attenuated to approx. 12A in 20ms)
38A (Attenuated to approx. 14A in 10ms)
44A (Attenuated to approx. 20A in 20ms)
88A (Attenuated to approx. 20A in 20ms)
235A (Attenuated to approx. 20A in 20ms)
a
a : Long flexing life encoder cable
Long flexing life motor power cable
Long flexing life motor brake cable
b : Standard encoder cable
Standard motor power cable
Standard motor brake cable
b
40
70 100
200
Inrush Currents (A
, L
, L
)
1
2
3
(Attenuated to approx. 0A in 1 to 2ms)
30A (Attenuated to approx. 0A in 3ms)
13 - 8
-p)
0
Control circuit power supply (L
20 to 30A
, L
)
11
21
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