8 Troubleshooting
P-2x5 Piezo Actuator
PZ245E
Version: 1.1.1
37
Problem
Possible causes
Solution
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. 41).
The E-481 or E-482
electronics from PI has
deactivated the voltage
output due to overheating
of the piezo actuator
If the piezo actuator is equipped with the option
"PT1000 temperature sensor and purge air
connector for PICA high-voltage piezo actuators"
(p. 13), the E-481 and E-482 electronics evaluate
the signal of the temperature sensor.
1.
Switch off the electronics.
2.
Wait a few minutes until the piezo actuator
has cooled down sufficiently.
3.
Switch the electronics on again.
Preventive measures:
Reduce the operating voltage, operating
frequency, and/or operating time.
Cool the piezo actuator.
Zero shift of the position
sensor for the following
reasons:
Load in direction of
motion
Ambient/operating
temperature of the
piezo actuator is much
higher or lower than
the calibration
temperature (21 °C to
24 °C)
Readjust the sensor's zero-point (see manual
for the electronics).
Piezo actuator is
depolarized due to
overheating
Contact our customer service department
(p. 39).
8
Troubleshooting