Mitsubishi Electronics MR-J2S- B User Manual

11 -  8

11. CHARACTERISTICS

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

The following table indicates the inrush currents (reference value) that will flow when the maximum
permissible voltage (253VAC) is applied at the power supply capacity of 2500kVA and the wiring length of
10m.

Inrush Currents (A

0-p

)

Servo amplifier

Main circuit power supply (L

1

, L

2

, L

3

)

Control circuit power supply (L

11

, L

21

)

MR-J2S-10B 20B

30A (Attenuated to approx. 5A in 10ms)

MR-J2S-40B 60B

30A (Attenuated to approx. 5A in 10ms)

MR-J2S-70B 100B

54A (Attenuated to approx. 12A in 10ms)

70 to 100A

(Attenuated to approx. 0A in 0.5 to 1ms)

MR-J2S-200B 350B

120A (Attenuated to approx. 12A in 20ms)

100 to 130A

(Attenuated to approx. 0A in 0.5 to 1ms)

MR-J2S-500B

44A (Attenuated to approx. 20A in 20ms)

MR-J2S-700B

88A (Attenuated to approx. 20A in 20ms)

MR-J2S-11KB
MR-J2S-15KB
MR-J2S-22KB

235A (Attenuated to approx. 20A in 20ms)

30A

(Attenuated to approx. 0A in several ms)

MR-J2S-10B1 20B1

59A (Attenuated to approx. 5A in 4ms)

MR-J2S-40B1

72A (Attenuated to approx. 5A in 4ms)

100 to 130A

(Attenuated to approx. 0A in 0.5 to 1ms)

Since large inrush currents flow in the power supplies, always use no-fuse breakers and magnetic
contactors. (Refer to section 12.2.2.)
When circuit protectors are used, it is recommended to use the inertia delay type that will not be tripped
by an inrush current.