6 Start-Up and Operation
40
Version: 1.0.0
PZ265E
PL0xx/PDxxx Piezo Actuator
6.4
Discharging the PL0xx/PDxxx
The PL0xx/PDxxx must be discharged in the following cases:
If the PL0xx/PDxxx has become accidentally charged due to thermal or mechanical
loading
If a charged PL0xx/PDxxx is to be short-circuited (p. 41)
If the connecting cable of the PL0xx/PDxxx is accidentally pulled out of the electronics
during operation
Requirements
You have read and understood the general notes on installation (p. 17).
Tools and accessories
If the PL0xx/PDxxx is not connected to the electronics:
Only for PL0xx/PDxxx
without
connector (condition as supplied):
−
10 k
Ω
discharge resistor (not included in scope of delivery); touchable parts must be
adequately insulated for the operating voltage range (p. 51) of the actuator
Only for PL0xx/PDxxx
with
connector (p. 29):
−
Electronics (p. 12) from PI
Discharging a PL0xx/PDxxx connected to the electronics
Set the piezo voltage to 0 V on the electronics.
Discharging a PL0xx/PDxxx not connected to the electronics
If the PL0xx/PDxxx does
not
have a connector:
1.
If necessary, let the PL0xx/PDxxx cool down.
2.
Ensure adequate protection against touching live parts.
3.
Short-circuit the electrodes of the PL0xx/PDxxx for at least a few seconds using a
10 kΩ
discharge resistor
.
If the PL0xx/PDxxx has a connector:
Connect the voltage connector of the PL0xx/PDxxx to the
switched-off
PI electronics,
which has an internal discharge resistor, for at least a few seconds.