Page 13 / 25
2018-11-13
P725T0010, valid for P-725
Physik Instrumente (PI ) GmbH & Co. KG, Auf der Roemerstr. 1, 76228 Karlsruhe/Germany
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email [email protected],
www.pi.ws
Startup and Operation
General Notes on Startup and Operation
NOTICE
Destruction of the piezo actuator by electric flashovers!
The use of the P-725 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-725 in environments that can increase the electric
conductivity.
Only operate the P-725 within the permissible ambient conditions and
classifications (p. 25).
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-725 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.
NOTICE
Uncontrolled oscillation!
Oscillations can cause irreparable damage to the P-725. Oscillations are indicated by
a humming and can result from the following causes:
The load and/or dynamics of operation differ too much from the calibration
settings.
The P-725 is operated near its resonant frequency.
If you notice oscillations, stop the P-725 immediately.
