User Manual
PZ271E, valid for N-331
KSch, 1/18/2021
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Page 18 / 30
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
Startup and Operation
General Notes on Startup and Operation
CAUTION
Risk of electric shock if the protective earth conductor is not connected!
If a protective earth conductor is not or not properly connected, dangerous touch voltages can
occur and there is a risk of electric shock. In the case of malfunction or failure of the system,
touching the drive or the contacts of the connected vacuum feedthrough can result in minor
injuries.
Connect the drive to a protective earth conductor (p. 12) before start-up.
Do
not
remove the protective earth conductor during operation.
If the protective earth conductor has to be temporarily removed (e.g., for modifications),
reconnect the drive to the protective earth conductor before starting it up again.
NOTICE
Destruction of the PICMAWalk drive by electric flashovers!
The drive contains piezo actuators. The use of the drive in environments that increase the
electrical conductivity can lead to the destruction of the piezo actuators by electric flashovers.
Electric flashovers can be caused by moisture, high humidity, liquids and conductive materials
such as metal dust. In addition, electric flashovers can also occur in certain air pressure ranges
due to the increased conductivity of the air.
Avoid operating the drive in environments that can increase the electric conductivity.
Only operate the drive within the permissible ambient conditions and classifications (see
p. 24).
For operation in vacuum below 0.1 hPa:
Do not operate the drive during evacuation and aeration.
NOTICE
Destruction of the piezo actuator by continuously high voltage!
The constant application of high voltage to piezo actuators can lead to leakage currents and
flashovers that destroy the ceramic.
If the drive is not used, but the electronics is to remain switched on to ensure temperature
stability:
In closed-loop operation:
1.
Switch the servo mode off on the electronics (open-loop operation).
2.
Set the piezo voltage to 0 V on the electronics.
In open-loop operation:
Set the piezo voltage to 0 V on the electronics.