Chapter 5 Trial Operation and TuningASDA-A2R Series
Revision December, 2014
5-23
Low-pass filter of resonance suppression (NLP, parameter P2-25)
Description The high value of inertia ratio will reduce the frequency response of speed
loop. Therefore, the KVP value must be increased to maintain the
response frequency.
Note During the process of increasing KVP value, it might cause machinary
resonance. Please use this parameter to elimiate the noise of resonance.
The bigger the value is, the better the capability of improving
high-frequency noise will be. However, if the value is set too big, it would
cause the unstability of speed loop and overshoot.
Calculation It is suggested to set the value as the following:
Anti-interference gain (DST, parameter P2-26)
Description This parameter is used to strengthen the ability of resisting external force
and gradually eliminate overshoot during acceleration / deceleration. Its
default value is 0. It is suggested not to adjust the value in manual mode,
unless it is for fine-tuning.
Position feed forward gain (PFG, parameter P2-02)
Description It can reduce the position error and shorten the settling time.
Note If the value is set too big, it might cause overshoot. If the setting of e-gear
ratio is bigger than 10, it might cause the noise as well.
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