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11. CHARACTERISTICS
11.4 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
7
5 10
7
1 10
8
5 10
6
1 10
6
5 10
5
1 10
5
5 10
4
1 10
4
5 10
3
1 10
3
a
b
F
l
e
x
i
n
g
l
i
f
e
[
t
i
m
e
s
]
4 7 10 20 40 70 100 200
Flexing radius [mm]
a : Long flex life encoder cable
Long flex life motor power cable
Long flex life motor brake cable
b : Standard encoder cable
Standard motor power cable
Standard motor brake cable
11.5 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 (200V class: 253VAC, 400V class: 528VAC) is applied at the power supply capacity of 2500kVA and
the wiring length of 1m.
Servo amplifier
Inrush currents (A
0
-
p
)
Main circuit power supply (L
1
, L
2
, L
3
) Control circuit power supply (L
11
, L
21
)
MR-J3-10A1 to 40A1 38A (Attenuated to approx. 14A in 10ms)
20 to 30A
(Attenuated to approx. 0A in 1 to 2ms)
MR-J3-10A to 60A 30A (Attenuated to approx. 5A in 10ms)
MR-J3-70A 100A 54A (Attenuated to approx. 12A in 10ms)
MR-J3-200A 350A 120A (Attenuated to approx. 12A in 20ms)
MR-J3-500A 44A (Attenuated to approx. 20A in 20ms)
30A (Attenuated to approx. 0A in 3ms)
MR-J3-700A 88A (Attenuated to approx. 20A in 20ms)
MR-J3-11KA
235A (Attenuated to approx. 20A in 20ms)
MR-J3-15KA
MR-J3-22KA
MR-J3-60A4 100A4 100A (Attenuated to approx. 5A in 10ms)
40 to 50A
(Attenuated to approx. 0A in 2ms)
MR-J3-200A4 120A (Attenuated to approx. 12A in 20ms)
MR-J3-350A4 500A4 66A (Attenuated to approx. 10A in 20ms)
41A (Attenuated to approx. 0A in 3ms)
MR-J3-700A4 67A (Attenuated to approx. 34A in 20ms)
MR-J3-11KA4
325A (Attenuated to approx. 20A in 20ms) 45A (Attenuated to approx. 0A in 3ms)
MR-J3-15KA4
MR-J3-22KA4
Since large inrush currents flow in the power supplies, always use no-fuse breakers and magnetic contactors.
(Refer to section 12.12.)
When circuit protectors are used, it is recommended to use the inertia delay type that will not be tripped by an
inrush current.