Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series, Instruction Manual

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7 CHARACTERISTICS
7.4 Inrush currents at power-on of main circuit/control circuit
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.
Inrush current of the drive unit
The following shows the inrush current (reference data) that will flow when 480 V AC is applied.
Power regeneration converter unit Inrush current (A0-P)
Main circuit power supply (L1/L2/L3) Control circuit power supply (L11/L21)
MR-CV55K4 42 A (attenuated to approx. 20 A in 66 ms) 15 A (attenuated to approx. 2 A in 7 ms)
Drive unit Inrush current (A0-P)
Control circuit power supply (L11/L21)
MR-J4-DU45KB4-RJ100
MR-J4-DU55KB4-RJ100 27 A (attenuated to approx. 2 A in 45 ms)