Mitsubishi Electric MELSERVO-JE MR-JE-100A, Instruction Manual

Page: 262 / 310

10. CHARACTERISTICS
10 - 7
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.
a:
b: Standard encoder cable
Standard motor power cable
Standard electromagnetic brake cable
Long bending life encoder cable
Long bending life motor power cable
Long bending life electromagnetic brake cable
Number of bending times
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 20 40 70 100 200
Bend radius [mm]
a
b
10.5 Inrush current at power-on
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. Even when you use a 1-phase 200 V
AC power supply with MR-JE-10A to MR-JE-70A, the inrush currents will be the same.
Servo amplifier Inrush currents (A
0-P
)
MR-JE-10A, MR-JE-20A,
MR-JE-40A 32 A
(attenuated to approx. 3 A in 20 ms)
MR-JE-70A, MR-JE-100A
36 A
(attenuated to approx. 7 A in 20 ms)
MR-JE-200A, MR-JE-300A
102 A
(attenuated to approx. 12 A in 20 ms)
Since large inrush currents flow in the power supplies, always use molded-case circuit breakers and
magnetic contactors. (Refer to section 11.6.)
When circuit protectors are used, it is recommended that the inertia delay type, which is not tripped by an
inrush current, be used.