Parker Hannifin S.p.A. Divisione S.B.C. user’s manual TWIN-N and SPD-N
54
Fig. 4
An overshoot of about 10% must be obtained. It is important that after the overshoot, an
undershoot does not occur.
Once the optimal value of Pr17 has been established, we must analyze the movement of the axis.
If it moves without vibrations and acoustic noise, the adjustment of the system is complete.
Otherwise, we must repeat the preceding procedures with lower values of Pr16.
In some applications it is possible to reduce acoustic noise by using a higher value of Pr18. Figure
5 shows that once the optimal adjustment has been achieved, there is also an oscillation of the current
that can produce acoustic noise and mechanical vibration. By raising the value of Pr18 to 3, the
situation is much improved (fig. 6).
Fig. 5
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