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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.