Low-Pass Filter For Resonance Suppression; Anti-Interference Gain; Position Feed Forward Gain - Delta ASDA-A3 Series User Manual

ASDA-A3
Low-pass filter for resonance suppression (NLP, parameter P2.025)

A high inertial value ratio reduces the frequency response of the speed loop. Therefore,
you must increase the KVP value to maintain the response frequency. Increasing KVP
value might cause machinery resonance. Please use this parameter to eliminate the
noise from resonance. The higher the value, the better the capability for reducing
high-frequency noise. However, if you set the value too high, it can cause instability in
the speed loop and overshoot in positioning. It is suggested that you set the value as
follows:
Anti-interference gain (DST, parameter P2.026)

Use this parameter to increase the ability to resist external force and eliminate overshoot
during acceleration / deceleration. The default value is 0. Adjusting this value in Manual
mode is not suggested unless it is for fine-tuning.
Position feed forward gain (PFG, parameter P2.002)

This parameter can reduce the position error and shorten the settling time. However, if
you set the value too high, it might cause overshoot in positioning. If the setting of the
e-gear ratio is larger than 10, it might cause noise as well.
Revision December, 2017
NLP (P2.025) ≤
6 × Speed loop frequency response (Hz)
10000
Tuning
5
5-21