Cable Bending Life; Inrush Currents At Power-On Of Main Circuit And Control Circuit - Mitsubishi Electric MELSERVO-J4 MR-J4 A Series Instruction Manual

10. CHARACTERISTICS

10.4 Cable bending life

The bending 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

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 240 V AC is applied at
the power supply capacity of 2500 kVA and the wiring length of 1 m.
MR-J4-10A, MR-J4-20A,
MR-J4-40A, MR-J4-60A
MR-J4-70A, MR-J4-100A
MR-J4-200A, MR-J4-350A
MR-J4-500A
MR-J4-700A
Since large inrush currents flow in the power supplies, always use molded case circuit breakers and
magnetic contactors. (Refer to section 11.10.)
When circuit protectors are used, it is recommended that the inertia delay type, which is not tripped by an
inrush current, be used.
8
7
7
6
6
5
5
4
4
3
3
4 7 10 20 40
Bend radius [mm]
Servo amplifier
Main circuit power supply (L1, L2, and
30 A (attenuated to approx. 3 A in 20
34 A (attenuated to approx. 7 A in 20
113 A (attenuated to approx. 12 A in 20
42 A (attenuated to approx. 20 A in 20
85 A (attenuated to approx. 20 A in 30
a
a: Long flex life encoder cable
Long flex life motor power cable
Long flex life electromagnetic brake cable
SSCNET III cable using long distance cable
b: Standard encoder cable
Standard motor power cable
Standard electromagnetic brake cable
SSCNET III cable using inside panel standard cord
SSCNET III cable using outside panel standard cable
b
70 100 200
Inrush currents (A
L3)
ms)
ms)
ms)
ms)
ms)
10 - 7
)
0-P
Control circuit power supply (L11 and
L21)
20 A to 30 A (attenuated to approx. 1 A
in 20 ms)
34 A (attenuated to approx. 2 A in 20
ms)