NOTICE
Operating voltage excessively high or incorrectly connected!
Operating voltages that are too high or incorrectly connected can cause damage to the
P-840.xxV.
►
Pay attention to the
operating voltage range (p. 29)
, which is specified for the P-840.xxV.
►
Pay attention to correct
NOTICE
Damage after reconnecting due to a charged P-840.xxV!
The P-840.xxV can remain charged when the connecting cable is pulled out of the electronics
during operation. Reconnecting a charged P-840.xxV to electronics during operation can
cause a mechanical impulse that will damage the P-840.xxV.
►
Do not pull the connecting cable of the P-840.xxV out of the electronics during operation.
►
If the connecting cable of the P-840.xxV is accidentally pulled out of the electronics during
operation: Switch off the electronics before you reconnect the P-840.xxV.
NOTICE
Destruction of the piezo actuator due to overheating!
Overheating can destroy the piezo actuator.
►
Adjust the operating voltage, operating frequency and/or operating time so that the
maximum operating temperature (p. 28)
of the piezo actuator is not exceeded; see
"Determining the Operating Parameters" (p. 18)
NOTICE
Uncontrolled oscillation!
Oscillation can cause irreparable damage to the P-840.xxV. Oscillation is indicated by a
humming noise and can be caused by the following:
■
A change in the load and/or dynamics requires the operating parameters to be adjusted.
■
The P-840.xxV is operated near to its resonant frequency.
►
If you notice oscillation, stop the P-840.xxV immediately.
Starting and Operating the P-840.xxV
1. Start up the electronics (see the user manual for the electronics).
2. Configure the electronics for the P-840.xxV during startup. If you are using a digital
controller from PI, run the PC software and select the entry in the positioner database that
matches the P-840.xxV exactly.
3. Start a few motion cycles for testing purposes (see the user manual for the electronics).
7.3
Discharging the P-840.xxV
The P-840.xxV must be discharged in the following cases:
■
When the P-840.xxV is not in use but the electronics remain switched on to ensure
temperature stability
■
If the P-840.xxV is accidentally disconnected from the electronics during operation
■
Before disassembling (e.g., before cleaning and transporting the P-840.xxV) as well as for
modifications
Requirements
✓
You have read and understood the
general safety instructions (p. 8)
7 STARTUP AND OPERATION
P840M0002EN
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1/29/2021
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