PI PICMA P-840, User Manual, Page: 25 / 34

9 Troubleshooting
No or limited motion
Cable not connected correctly ►
Check the cable connections.
Excessive load ►
Do not exceed the maximum push/pull capacity
according to the specifications (p. 28) .
Piezo actuator is depolarized due to over-
heating ►
Contact our customer service depart‐
ment (p. 27) .
Defective actuator ►
If possible, replace the defective actuator with
another actuator and test the new combination.
The piezo actuator starts oscillating or positions inaccurately
Operating parameters wrongly set because
for example, the load was changed ►
Switch off the electronics immediately.
►
Check the settings of the operating parameters
(see the user manual for the electronics).
►
If necessary, correct the settings for the operat‐
ing parameters.
Operating with an excessively high frequen-
cy ►
Operate the piezo actuator at a maximum of one
third of the resonant frequency (see "Data Ta‐
ble" (p. 28) for resonant frequency of the un‐
loaded piezo actuator, see "Calculating the Maxi‐
mum Operating Frequency of the Loaded Piezo
Actuator" (p. 19) for resonant frequency of the
loaded piezo actuator).
9 TROUBLESHOOTING P840M0001EN
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1/29/2021
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