Inrush Currents At Power-On Of Main Circuit And Control Circuit; Cable Bending Life - Mitsubishi Electric MR-J4W2-0303B6 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.

10.5 Inrush currents at power-on of main circuit and control circuit

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.
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-J4W2-22B to MR-J4W2-77B, MR-J4W3-222B, and MR-J4W3-444B, the inrush
currents of the main circuit power supply is the same.
MR-J4
2-axis servo amplifier
MR-J4W2-22B MR-J4W3-222B
MR-J4W2-44B MR-J4W3-444B
MR-J4W2-77B
MR-J4W2-1010B
POINT
For a servo amplifier of 600 W or less, the inrush current values can change
depending on frequency of turning on/off the power and ambient temperature.
MR-J4
3-axis servo amplifier
Main circuit power supply (L1/L2/L3)
(attenuated to approx. 6 A in 20 ms)
(attenuated to approx. 11A in 20 ms)
Inrush currents (A
113 A
113 A
10 - 9
)
0-P
Control circuit power supply (L11/L21)
24 A
(attenuated to approx. 2 A in 20 ms)