PI PICMA P-840, Руководство пользователя, Страница: 22 / 34

NOTICE
Damage after reconnecting due to a charged P-840!
The P-840 can remain charged when the connecting cable is pulled out of the electronics
during operation. Reconnecting a charged P-840 to electronics during operation can cause a
mechanical impulse that will damage the P-840.
►
Do not pull the connecting cable of the P-840 out of the electronics during operation.
►
If the connecting cable of the P-840 is accidentally pulled out of the electronics during
operation: Switch off the electronics before you reconnect the P-840.
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
"Maximum Ratings" (p. 29) and "Determining the Operating Parameters" (p. 18) .
NOTICE
Uncontrolled oscillation!
Oscillation can cause irreparable damage to the P-840. 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 is operated near to its resonant frequency.
►
If you notice oscillation, stop the P-840 immediately.
Starting and Operating the P-840
1. Start up the electronics (see the user manual for the electronics).
2. Configure the electronics for the P-840 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 exactly.
3. Start a few motion cycles for testing purposes (see the user manual for the electronics).
7.3 Discharging the P-840
The P-840 must be discharged in the following cases:
■
When the P-840 is not in use but the electronics remain switched on to ensure
temperature stability
■ If the P-840 is accidentally disconnected from the electronics during operation
■
Before disassembling (e.g., before cleaning and transporting the P-840) as well as for
modifications
Requirements
✓
You have read and understood the general safety instructions (p. 8) .
Tools and Accessories
■ Electronics from PI (p. 11)
Discharging a P-840 Connected to the Electronics
1. Set the piezo voltage to 0 V on the electronics.
7 STARTUP AND OPERATION P840M0001EN
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1/29/2021
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