Parker Hannifin S.p.A. - Divisione S.B.C. LVD User’s Manual
39
Fig.4
We must now 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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