Parker Hannifin S.p.A. - S.B.C. Division HPD N User’s Manual
40
Fig.4
We must therefore obtain approximately 10% overshoot. Make sure that the overshoot is
not followed immediately by undershoot.
Once you have set the optimal value for Pr17 pay attention to the movement of the motor
shaft: if it moves smoothly without vibration and noise, you can deduce that system
calibration procedures are terminated. Otherwise repeat all the previous steps using lower
values for Pr16.
In certain applications you can reduce system acoustic noise levels by raising parameter
Pr18 by a few points. Fig.5 shows that the optimal system response is accompanied by a
current fluctuation that can generate acoustic noise and mechanical vibration; increasing Pr18
to the value 3 will improve this condition significantly (fig. 6).
Fig.5
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