User Manual
P726T0002, valid for P-726.1CD
CBo, 10/18/2019
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Page 6 / 17
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
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 P-726 can result in minor injuries.
Connect the P-726 to a protective earth conductor (p. 9) 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 P-726 to the protective earth conductor before starting it up again.
NOTICE
Unsuitable cables!
Unsuitable cables can damage the electronics.
Only use cables from PI for connecting the P-726 to the electronics.
NOTICE
Destruction of the piezo actuator by electric flashovers!
The use of the P-726 in environments that increase the electrical conductivity can lead to the
destruction of the piezo actuator 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 P-726 in environments that can increase the electric conductivity.
Only operate the P-726 within the permissible ambient conditions and classifications
(p. 14).
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 P-726 is not used, but the controller is to remain switched on to ensure temperature
stability:
Set the piezo voltage to 0 V on the controller.
