Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

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10 CHARACTERISTICS
10.1 Overload protection characteristics
■
Characteristics d
■
Characteristics e
*1 If operation that generates torque more than 100% of the rating is performed with an abnormally high frequency in a servo motor stop
status (servo-lock status) or in a 50 r/min or less low-speed operation status, the servo amplifier may malfunction regardless of the
electronic thermal protection.
*2 The load ratio ranging from 300% to 350% applies to the HG-KR servo motor.
*3 The operation time at the load ratio of 300% to 400% applies when the maximum torque of HG-JR servo motor is increased to 400% of
rated torque.
1000
100
10
1
0.1
100 200 300 400 0 50 150 250 350
Load ratio [%] *1*3
Servo-lock
Operating
Operation time [s]
10000
1000
100
10
1
0 100 200 300
Servo-lock
50 150 250
Load ratio [%] *1
Operation time [s]
Operating