Precautions; Overhanging Load; Load Moment Of Inertia Jl - YASKAWA SGM Series User Manual

5.6 Precautions

5.6.1 Overhanging Load

Do not allow the motor to be continuously rotated by the load while the regenerative brake is
being applied.
Example:
Rated specifications for the regenerative braking capacity of the SERVOPACK is only for brief
periods while the motor is stopped. Contact your Yaskawa representative about applications
with overhanging load.
5.6.2 Load Moment of Inertia J
Make sure the allowable load moment of inertia J
the range given in Figure 5.3. (when using Servomotors with incremental encoders for 200
VAC) An overvoltage alarm will occur during deceleration if the load moment of inertia ex-
ceeds the values in the figure. If this occurs, take one of the following actions. For further de-
tails, contact your Yaskawa representative.
D Reduce the torque limit.
D Reduce the deceleration rate.
D Reduce the maximum rotation speed.
D Add a Regenerative Unit.
Tension control drive
Do not use the motor for lowering objects without a counterweight.
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5.6 Precautions
calculated for the motor shaft falls within
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5