6 Start-Up and Operation
34
Version: 1.0.0
PZ265E
PL0xx/PDxxx Piezo Actuator
NOTICE
Reduced lifetime due to permanently high voltage and high air humidity!
The permanent application of a high static voltage to piezo actuators leads to a considerable
reduction in the lifetime of the piezo ceramic. This applies in particular to operation in a humid
environment.
When the PL0xx/PDxxx is not in use but the electronics remain switched on to ensure
temperature stability: Set the piezo voltage to 0 V on the electronics.
If possible: Limit the maximum operating voltage during continuous operation.
Reduce offset voltages to a minimum.
Protect the piezo actuator against moisture by means of hermetic sealing or the supply of
dry air.
Make sure that the air humidity in the vicinity of the PL0xx/PDxxx does not exceed the
relative humidity specified in "Ambient Conditions and Classifications" (p. 53).
NOTICE
Operating voltage excessively high or incorrectly connected!
Operating voltages that are too high or incorrectly connected can cause damage to the
PL0xx/PDxxx.
Do
not
exceed the operating voltage range (p. 51) for which the PL0xx/PDxxx is specified.
Operate the PL0xx/PDxxx only when the operating voltage is properly connected; see
"Connecting the PL0xx/PDxxx to the Electronics" (p. 29).
If you have accidently applied the operating voltage with the wrong polarity, contact our
customer service department (p. 47).
NOTICE
Destruction of the piezo actuator due to overheating!
During the operation of the piezo actuator, dielectric losses that are converted into heat
energy occur in the piezo ceramic due to ferroelectric polarization processes. The resulting
heat can overheat and destroy the piezo actuator, especially in dynamic operation.
Adjust the operating voltage, operating frequency, and/or operating time so that the
maximum operating temperature of the piezo actuator is not exceeded; see "Ambient
Conditions and Classifications" (p. 53), "Maximum Ratings" (p. 51), and "Determining the
Operating Parameters" (p. 35).
Cool the piezo actuator. Do
not
use liquids for cooling. If liquid cooling is to be used,
contact our customer service department (p. 47).