PI P-545, Руководство пользователя, Страница: 37 / 57

8 Troubleshooting
P-545 Nanopositioners PZ272E Version: 1.1.0 33
Problem Possible causes Solution
No or limited
motion
Cable not connected
correctly

Check the cable connections.
Excessive load

Do
not
exceed the maximum permissible
loads according to the specifications
(p. 37).
Zero point shifting of the
sensor for the following
reasons:

Load applied in
direction of motion
 Ambient/operating
temperature of the
positioner far above or
below the calibration
temperature (21 °C to
24 °C)

Adjust the zero point of the sensor (refer
to "AutoZero Procedure" in the controller
manual).
Reduced accuracy The base body or the
platform is warped

Mount the P-545 onto surfaces with the
following characteristics only:
− Flatness of at least 100 μm
−
The thermal expansion properties are
similar to those of the P-545 (e.g.,
surface made of aluminum).

Mount loads onto the P-545 with the
following characteristics only:
− The contact surface of the load has a
flatness of at least 100 μm.
−
The thermal expansion properties are
similar to those of the P-545 (e.g.,
load made of aluminum).
The positioner
starts oscillating
or positions
inaccurately
Servo control parameters
incorrectly set because for
example, the load was
changed
1. Switch off the servo mode of the
corresponding motion axes immediately.
2. Check the settings of the servo control
parameters on the controller.
3. Adjust the servo control parameters on
the controller according to the load
change.
Open-loop operation near
the resonant frequency

In open-loop operation, operate the
positioner only with a frequency that is
below the resonant frequency.
If the problem that occurred with your system is not listed in the table above or cannot be
solved as described, contact our customer service department (p. 35).
8 Troubleshooting