Festo SPC200 - Optimizing the Positioning Behaviour

6. Diagnostics and optimization
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Festo P.BE−SPC200−WIN−PISA−CD−EN en 0901d
6.7.4 Optimizing the positioning behaviour
The following problems may arise during positioning:
 the axis stops prematurely several times
 swinging around the reference position
 stability problem, highly frequent oscillation around the
reference position
 overswing
 underswing.
Before trying to optimize the positioning behaviour of the
axis, proceed as follows:
· Make sure that the pneumatic axis is set up according to
the specifications (see system manual for the SPC200).
· Make sure that all axis and application parameters are set
correctly.
· Always carry out the static identification and at least one
of the dynamic system identifications.
· Then carry out several positioning cycles. This is to guar
antee that the adaption is effective.
If, however, problems still occur, proceed as follows:
1. Observe the positioning behaviour. Trace the measure
ment values of the relevant positioning steps with the
command [Control axis] in the [Online] menu in
Debugmode. Create a graph on the
basis of the recorded
measured values as described in section 6.7.3.
2. Compare the graph with the following examples.
3. In order to optimize the positioning behaviour, proceed as
described in the appropriate example. Observe the se
quence in the list of causes and their relevant remedial
measures. First check the probable causes and their
re
medial measures from top to bottom.