Figure 9: In the example, the first resonant frequency can be seen at 425 Hz, a second at
171 Hz.
Adjusting the Notch Filter
1. Open the expanded single axis window of the connected positioner in the main window
of PIMikroMove: Click the corresponding line of the
Axes
tab with the right mouse button
and select the
Show Expanded Single Axis Window
in the context menu.
2. Adapt the parameter values for the notch filter in the expanded single axis window:
a) If the Notch Filter Frequency 1 and Notch Filter Edge 1 parameters are not in the list on
the right-hand side of the window, click
Configure View -> Select parameters...
and add
them to the list.
b) Type the new parameter value into the corresponding input field in the
Active Value
column of the list.
The value of the
Notch Filter Frequency 1
parameter must be set to the previously
determined resonant frequency. If two resonant frequencies were determined, it
should be set to a value that is roughly in the middle between both resonant
frequencies. In this case, the value of the
Notch Filter Edge 1
parameter must be
reduced to a value in a range of 0.3 to 0.2 in order to increase the bandwidth of the
notch filter.
c) Press the Enter key on the PC keyboard or click outside the input field with the mouse
to transfer the parameter value to the volatile memory of the controller. Note: If a
parameter value in the volatile memory (
Active Value
column) is different to the
parameter value in the nonvolatile memory (
Startup Value
column), the line in the list
is highlighted in color.
7 STARTUP / OPERATION
PZ285EN
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1/30/2019
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