6 Starting and Operating
28
Version: 1.1.1
PZ245E
P-2x5 Piezo Actuator
NOTICE
Destruction of the piezo actuator due to electric flashovers!
Using the P-2x5 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 (e.g., 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-2x5 in environments that can increase the electrical conductivity.
Only operate the P-2x5 within the permissible ambient conditions and classifications
(p. 44).
When using in a vacuum under 100 hPa:
Do
not
operate the P-2x5 while evacuating or ventilating.
NOTICE
Destruction of the piezo actuator due to dynamic forces!
Dynamic forces can be generated during dynamic operation that cancel out the preload of the
piezo actuator. Operating without a preload can destroy the actuator.
Do
not
exceed the maximum push/pull capacity according to the specifications (p. 41).
Pay attention to the notes in "Determining the Operating Parameters" (p. 30).
NOTICE
Destruction of the piezo actuator due to excessive operating frequencies!
Excessive operating frequencies can destroy the piezo actuator.
Select the operating frequency so that the following conditions are met:
−
The operating frequency of the piezo actuator does not exceed one third of the
resonant frequency:
- Maximum operating frequency of the unloaded piezo actuator: Refer to "Maximum
Ratings" (p. 43).
- Maximum operating frequency of the loaded piezo actuator: Refer to "Calculating the
Maximum Operating Frequency of the Loaded Piezo Actuator" (p. 31).
−
Any dynamic forces generated during operation do
not
exceed the maximum push/pull
force of the piezo actuator (see "Calculating the Forces that Occur During Dynamic
Operation" (p. 32) and "Specifications" (p. 41)).
NOTICE
Reduced lifetime of the piezo actuator due to permanently high voltage!
Applying a continuous high static voltage to piezo actuators leads to a considerable reduction
in the lifetime of the piezo ceramic.
When the P-2x5 is not used but the electronics remain switched on to ensure temperature
stability, discharge the P-2x5 (p. 34).
If possible: Limit the maximum operating voltage to 750 V during continuous operation.