PI P--763 Series, User Manual

Page: 33 / 45

8 Troubleshooting
P­763 Nanopositioner PZ258E Version: 1.1.0 29
Problem Possible causes Solution
No or limited
motion
Cable not connected
correctly

Check the cable connections.
Excessive load

Do
not
exceed the maximum permissible
stress and load capacities according to
the specifications (p. 33).
Zero shift of the sensor for
the following reasons:

Load in direction of
motion
 Ambient/operating
temperature of the
positioner is far above
or below the calibration
temperature (21 °C to
24 °C)

Adjust the zero-point of the sensor (see
controller manual).
Reduced
positioning
accuracy
The base body or the
platform is warped

Mount the P-763 onto surfaces with the
following characteristics only:
− Flatness of at least 20 μm
−
The thermal expansion properties are
similar to those of the P-763 (e.g.,
surfaces made of aluminum).

Mount loads onto the P-763 with the
following characteristics only:
− The contact surface of the load has a
flatness of at least 20 μm.
−
The thermal expansion properties are
similar to those of the P-763 (e.g.,
loads made of aluminum).
8 Troubleshooting