Kvi, Parameter P2-06 Speed Integral Compensation; Dst, Parameter P2-26 External Anti-Interference Gain; Pfg, Parameter P2-02 Position Feed Forward Gain - Delta ASD-B2-0121-B User Manual

Chapter 5 Trial Run and Tuning Procedure

KVI, Parameter P2-06 Speed Integral Compensation

If the setting value of KVI is higher, the capability of decreasing the speed control
deviation is better. However, if the setting value is over high, it may easily result in
the vibration of machinery system. The recommended setting value is as follows:
NLP, Parameter P2-25 Low-pass Filter Time Constant of Resonance Suppression
When the value of (J_load / J_motor) is high, the responsiveness of speed loop may
decrease. At this time, the users can increase the setting value of KVP (P2-04) to
keep the responsiveness of speed loop. However, when increasing the setting value
of KVP (P2-04), it may easily result in the vibration of machinery system. Please use
this parameter to suppress or eliminate the noise of resonance. If the setting value
of NLP is higher, the capability of improving the noise of resonance is better.
However, if the setting value is over high, it may easily lead to the instability of
speed loop and overshoot of machinery system.
The recommended setting value is as follows:

DST, Parameter P2-26 External Anti-Interference Gain

This parameter is used to enhance the anti-interference capability and reduce the
occurrence of overshoot. The default setting is 0 (Disabled). It is not recommended
to use it in manual mode only when performing a few tuning on the value gotten
through P2-32 AutoMode (PDFF) (setting value is 5, mode 5) automatically (The
setting value of P2-26 will change to the value that measured in mode 5 (AutoMode
(PDFF)) when switching mode 5 ((AutoMode (PDFF)) to mode 0 (Manual mode)).

PFG, Parameter P2-02 Position Feed Forward Gain

This parameter is used to reduce position error and shorten the positioning settling
time. However, if the setting value is over high, it may easily lead to the overshoot of
machinery system. If the value of electronic gear ratio (1-44/1-45) is over than 10,
the machinery system may also easily generate vibration or noise.
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Revision June 2010