10. CHARACTERISTICS
10 - 7
10.5 Inrush currents at power-on of main circuit and control circuit
The following table indicates the inrush currents (reference data) that will flow when the maximum permissible
voltage (253VAC) is applied at the power supply capacity of 2500kVA and the wiring length of 1m.
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-J3W-22B
MR-J3W-44B
120A (Attenuated to approx. 2A in 10ms)
MR-J3W-77B
MR-J3W-1010B
120A (Attenuated to approx. 12A in 20ms)
20 to 30A
(Attenuated to approx. 0A in 1 to 2ms)
Since large inrush currents flow in the power supplies, always use no-fuse breakers and magnetic contactors.
(Refer to section 11.6.)
When circuit protectors are used, it is recommended to use the inertia delay type that will not be tripped by an
inrush current.
Summary of Contents for MELSERVO-J3W Series
Page 17: ...8 MEMO ...
Page 27: ...1 FUNCTIONS AND CONFIGURATION 1 10 MEMO ...
Page 87: ...4 STARTUP 4 14 MEMO ...
Page 117: ...5 PARAMETERS 5 30 MEMO ...
Page 129: ...6 GENERAL GAIN ADJUSTMENT 6 12 MEMO ...
Page 185: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 241: ...11 OPTIONS AND AUXILIARY EQUIPMENT 11 56 MEMO ...
Page 274: ...13 USING A LINEAR SERVO MOTOR 13 25 1 2 3 4 ...