Skip Frequencies - Parker 650 Serie Manual De Producto

650 Series AC Drive

Skip Frequencies

S S
Parameters ST11 to ST14 control two programmable skip frequencies that can prevent the
drive from operating at frequencies that cause mechanical resonance in the load.

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.
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.
Drive
Frequency
Drive
Frequency
Drive
Frequency
Programming Your Application
Skip band
Skip Frequency
Frequency 2
Frequency 1
Frequency 1 Frequency 2
6-10
Setpoint
Setpoint
Setpoint