User Manual
E727T0005, valid for E-727
BRO, 2019-06-28
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Page 135 / 240
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
The settling behavior of the axis in closed-loop operation is influenced by the notch
filter settings. Set the notch filters before you optimize the servo-control parameters
(p. 136).
If you work with the
Piezo Dynamic Tuner
window of PIMikroMove:
−
If you change a parameter value of the E-727 by entering a corresponding value:
The value is displayed in a blue font until you press
Enter
on your keyboard.
Pressing
Enter
sends the value to the E-727 and changes the font color from blue
to black. For fields highlighted by a red background, the parameter values in
volatile and nonvolatile memory of the E-727 differ.
−
When the
Notch Frequency 1
value is set in the
Parameter Settings
panel of the
Piezo Dynamic Tuner
window, the
Servo-Loop I-Term
value can be adjusted
automatically in accordance. The adjustment depends on the selection in the
Automatic I-Term
calculation drop down menu.
Default: The I-term is set to a “conservative” value which is calculated with the
following formula:
Further options:
“Dynamic” I-term value, calculated with the following formula:
“Off”, i.e. no automatic I-term calculation.
The settings for slew rate (
Slew Rate / Velocity
field) and record table rate (
Record
Rate
field) can be changed in the
Piezo Dynamic Tuner
window. Entering new values in
these fields changes the values of the corresponding parameters in volatile memory:
−
Servo Loop Slew-Rate
(ID 0x07000200) or
Open Loop Slew-Rate
(ID 0x07000201),
depending on the current operating mode (open-loop or closed-loop operation)
−
Data Recorder Table Rate
(ID 0x16000000).
The values are
not
saved or reset when you use the
Save …
and
Reset …
buttons in the
Parameter Settings
panel of the
Piezo Dynamic Tuner
window.