PI L-402 Series, User Manual, Page: 27 / 43

8 Troubleshooting
L-402 Mniature Stage MP164E Version: 1.2.0 23
Problem Possible causes Solution
Reduced positioning accuracy Warped base body

Mount the L-402 onto an even surface. The
recommended flatness of the surface is
≤ 10 µm.
When the L-402 is
mounted vertically: The
load exceeds the self-
locking of the drive.

Reduce the load. Make sure that the self-
locking (see specification of the holding
force in the data table) of the drive is not
exceeded (p. 27)).
Increased wear due to
small motions over a
long period of time

Perform a maintenance run over the entire
travel range (p. 21).
Functional impairment after
system modification

Controller was
replaced.
 The LS402 was
replaced by another
model.
Controller from PI:

Load the parameters from the stage
database that correspond to the
combination of controller and the L-310
model.
Controller from a third-party supplier:

Check the operating parameters.
8 Troubleshooting