Yaskawa SGDB - Manual (Page 300)

SERVO SELECTION AND DATA SHEETS
5.3.5 Load Inertia
290
5.3.5 Load Inertia
The larger the load inertia becomes, the worse the movement response of the load. The
size of the load inertia (J
L
) allowable when using a servomotor must not exceed five times
the motor inertia (J
M
).
If the load inertia exceeds five times the motor inertia, an overvoltage alarm may arise
during deceleration. To prevent this, take one of the following actions:
• Reduce the torque limit value.
• Reduce the slope of the deceleration curve.
• Reduce the maximum motor speed.
• Consult your Yaskawa representative.
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