Tuning; Controller Overview - Siemens SIMOTICS S-1FL6 Operating Instructions Manual

Tuning

10.1

Controller overview

The SINAMICS V90 PN servo drive consists of three control loops:
● Current control
● Speed control
● Position control
The following block diagram shows the relationship between these three control loops:
In theory, frequency width of the inside control loop must be wider than that of the outer
control loop; otherwise, the whole control system can vibrate or have a low response level.
The relationship between the frequency widths of these three control loops is as follows:
Current loop > speed loop > position loop
Since the current loop of SINAMICS V90 PN servo drive already has a perfect frequency
width, it is only necessary for you to adjust the speed loop gain and the position loop gain.
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 09/2016, A5E37208830-002
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