Skip Frequencies - Parker 650G Product Manual

6-15
Programming Your Application

Skip Frequencies

Parameters
drive from operating at frequencies that cause mechanical resonance in the load.


The drive will then avoid sustained operation within the forbidden band as shown in the
diagram. The skip frequencies are symmetrical and thus work in forward and reverse.
Setting SKIP FREQUENCY or SKIP FREQUENCY BAND to 0 disables the corresponding
band.
S S
ST11 to ST14 control two programmable skip frequencies that can prevent the
Enter the value of the frequency that causes the resonance into the SKIP FREQUENCY
parameter.
Enter a width for the skip band into the SKIP FREQUENCY BAND parameter.
Drive
Frequency
Drive
Frequency
Frequency 1
Drive
Frequency
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Skip band
Skip Frequency
Frequency 2
Frequency 1 Frequency 2
Setpoint
Setpoint
Setpoint
650G AC Drive