Chapter 5 Trial Run and Tuning Procedure|ASDA-A&A+ Series
5-26
Revision April 2009
ASDA-A+ Series:
( )X[ ]Hz
KVP
2
(1+P1-37/10)
(1+JL/JM)
Speed Loop Responsiveness =
When the value of P1-37 (no matter it is the measured load inertia value or the set load inertia
value) is equal to the actual load inertia value, the actual speed loop responsiveness will be:
= Hz
KV
2
.
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:
KVI (Parameter P2-06)
1.5 x Speed Loop Responsiveness
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:
1000
NLP (Parameter P2-25)
4 x Speed Loop Responsiveness (Hz)
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.
JM: Motor Inertia
JL: Load Inertia
P1-37: 0.1 times
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
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