Parker AC30 - Page 415

Parameter Reference D-155
AC30 series Variable Speed Drive
Parameter Name
No.
Path
Default
Range
Units
Writable
Skip Frequency 4
1915
Setup::Application::Skip Frequencies
0.0
0.0 to 1000.0
Hz
ALWAYS
The centre frequency of skip band 4 in Hz.
Functional Description
Four programmable skip frequencies are available to avoid resonances within the mechanical system. Enter the value of frequency that causes the
resonance using a Frequency parameter and then program the width of the skip band using its Band parameter. 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 a Frequency to 0 disables the corresponding band. Setting a Band to 0 causes the value of Band 1 to be used for this band.
Setpoint
Drive
Frequency
Frequency 1 Frequency 2