Inrush Currents At Power-On Of Main Circuit/Control Circuit; Inrush Currents Of The Power Regeneration Converter; Inrush Current Of The Drive Unit - Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series Instruction Manual

7.4
Inrush currents at power-on of main circuit/control
circuit
Since large inrush currents flow in the power supplies, be sure to use molded-case circuit breakers and magnetic contactors.
(Refer to section 8.5 in "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) Instruction Manual".)
Be sure to install a molded-case circuit breaker and a magnetic contactor for each combination of the power regeneration
converter unit and drive unit. When circuit protectors are used, it is recommended that the inertia delay type, which is not
tripped by an inrush current, be used.

Inrush currents of the power regeneration converter

The following shows the inrush current (reference data) that will flow when 480 V AC is applied.
Power regeneration converter unit
MR-CV55K4

Inrush current of the drive unit

The following shows the inrush current (reference data) that will flow when 480 V AC is applied.
Drive unit
MR-J4-DU45KB4-RJ100
MR-J4-DU55KB4-RJ100
7 CHARACTERISTICS
60

7.4 Inrush currents at power-on of main circuit/control circuit

Inrush current (A0-P)
Main circuit power supply (L1/L2/L3)
42 A (attenuated to approx. 20 A in 66 ms)
Inrush current (A0-P)
Control circuit power supply (L11/L21)
27 A (attenuated to approx. 2 A in 45 ms)
Control circuit power supply (L11/L21)
15 A (attenuated to approx. 2 A in 7 ms)