4.6.5 Low Frequency Vibration Suppression
（1）Note:
For the low rigidity load, low frequency vibration will occur continually at the front end of the load during fast acceleration
or fast deceleration. The vibration may delay positioning time and affect the productive efficiency.
The function of low frequency vibration suppression is embedded in ETS series servo drives by calculating the load
position and compensating.
（2）Application:
Low frequency vibration suppression function is enabled in both speed control mode and position control mode.
Low frequency vibration suppression function is disabled or can not reach the expected effect in the following conditions.
Vibration is pricked up due to an external force.
Vibration frequency is between5.0Hz to 50.0Hz.
There is mechanical clearance at the mechanical connection part.
The time for movement is less than one vibration period.
（3）How to operate:
Measuring Vibration frequency
Write the frequency data measured(unit:0.1Hz) directly to Parameter Pn411, if the vibration frequency can be
measured by an instrument (such as a laser interferometer).And it also can be measured indirectly by
communication software ESView or FFT analsis function.
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