15. MR-J3W-0303BN6 SERVO AMPLIFIER
15 - 56
(2) Permissible load to motor inertia ratio when the dynamic brake is used
Use the dynamic brake under the load to motor inertia ratio indicated in the following table. If the ratio is
higher than this value, the built-in dynamic brake may burn. If there is a possibility that the ratio may exceed
the value, contact your local sales office.
The values of the permissible load to motor inertia ratio in the table are the values at the maximum rotation
speed of the servo motor.
Servo motor
series
Load to motor inertia ratio
[multiplier]
HG-AK 30
15.8.4 Inrush currents at power-on of main circuit and control circuit
The following shows inrush current (reference) when the maximum permissible voltage (main circuit: 55.2VDC,
control circuit: 26.4VDC) is applied on the conditions: main circuit power supply capacity; 48V/600W, control
circuit power supply capacity; 24V/100W, wiring length; 1m.
Inrush current
Servo amplifier
Main circuit power supply (PM, 0)
Control circuit power supply (24, 0)
MR-J3W-0303BN6
160A (attenuated to approx. 2A in 1ms)
1A (attenuated to approx. 0A in 30ms)
Since large inrush currents flow in the power supplies, always use circuit protectors.
For circuit protectors, it is recommended that the inertia delay type, which is not tripped by an inrush current, be
used.
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 ...