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10. CHARACTERISTICS
10.4 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
SSCNET cable using long distance cable
b : Standard encoder cable
Standard motor power cable
Standard motor brake cable
SSCNET cable using inside panel standard cord
SSCNET cable using outside panel standard cable
10.5 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 (3.28ft).
Inrush currents (A
0
-
p
)
Servo amplifier
Main circuit power supply (L
1
, L
2
, L
3
) Control circuit power supply (L
11
, L
21
)
MR-J3-10B1 to 40B1 38A (Attenuated to approx. 14A in 10ms)
MR-J3-10B to 60B 30A (Attenuated to approx. 5A in 10ms)
MR-J3-70B 100B 54A (Attenuated to approx. 12A in 10ms)
MR-J3-200B 350B 120A (Attenuated to approx. 12A in 20ms)
20 to 30A
(Attenuated to approx. 0A in 1 to 2ms)
MR-J3-500B 44A (Attenuated to approx. 20A in 20ms)
MR-J3-700B 88A (Attenuated to approx. 20A in 20ms)
MR-J3-11KB
MR-J3-15KB
MR-J3-22KB
235A (Attenuated to approx. 20A in 20ms)
30A (Attenuated to approx. 0A in 3ms)
MR-J3-60B4 100B4 100A (Attenuated to approx. 5A in 10ms)
MR-J3-200B4 120A (Attenuated to approx. 12A in 20ms)
40 to 50A
(Attenuated to approx. 0A in 2ms)
MR-J3-350B4 500B4 66A (Attenuated to approx. 10A in 20ms)
MR-J3-700B4 67A (Attenuated to approx. 34A in 20ms)
41A (Attenuated to approx. 0A in 3ms)
MR-J3-11KB4
MR-J3-15KB4
MR-J3-22KB4
325A (Attenuated to approx. 20A in 20ms) 45A (Attenuated to approx. 0A in 3ms)
Since large inrush currents flow in the power supplies, always use no-fuse breakers and magnetic contactors.
(Refer to section 11.12.)
When circuit protectors are used, it is recommended to use the inertia delay type that will not be tripped by an
inrush current.