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Chapter 5 Trial Run and Tuning Procedure|ASDA-AB Series
5-22 Revision January 2009
Speed Mode
5.6.6 Limit of Load Inertia Estimation
The accel. / decel. time for reaching 2000r/min must be below 1 second. The rotation speed must be
above 200r/min. The load inertia must be 100 multiple or less of motor inertia. The change of external
force and the inertia ratio can not be too much. In AutoMode (P2-32 is set to 3 or 5), it will stop
estimating the load inertia. The measured load inertia value will not be saved when the power is cut off.
When re-apply the power to the drive every time, the setting value of P1-37 is equal to the initial value of
load inertia value. But, the measured inertia value will be memorized in P1-37 automatically when:
(1) Switching AutoMode #2 to AutoMode #3
(2) Switching AutoMode #4 to AutoMode #5