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Application Manual CDA3000
6 Control modes
In special application cases a further optimization of the parameters
based on experimentation with the application may improve the result.
Manual optimization is particularly advisable for applications in the limit
zone of the electric power rating of the inverter module as well as in case
of major load surges, or for special motors (e.g. high-frequency spindles).
This optimization based on tests is intended to produce the desired suc-
cess in terms of the drive solution.
Note: During identification the switching frequency of the power
stage should be reduced in subject area “_69 PM-
Modulation” by means of parameter 690-PMFS to 4kHz. This
reduction improves the accuracy of motor identification,
because the influence of the fault voltages of the inverter
power stage is reduced. This measure can improve control
response at inverter outputs above 22 kW (as from
CDA34.045) especially.
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