PI P-611 Series, Руководство пользователя

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6 Starting and Operating
P­611 Positioners PZ253E Version: 1.2.0 25
In this Chapter
General Notes on Starting ........................................................................................................... 25
Operating the P-611 ..................................................................................................................... 26
Discharging the P-611 .................................................................................................................. 27
6.1 General Notes on Starting
CAUTION
Risk of electric shock if the protective earth conductor is not connected!
If a protective earth conductor is not or not properly connected, dangerous touch voltages can
occur on the P-611 in the case of malfunction or failure of the system. If there are touch
voltages, touching the P-611 can result in minor injuries from electric shock.

Connect the P-611 to a protective earth conductor (p. 18) before starting.

Do not remove the protective earth conductor during operation.

If the protective earth conductor has to be removed temporarily (e.g., in the case of
modifications), reconnect the P-611 to the protective earth conductor before restarting.
NOTICE
Destruction of the piezo actuator due to electric flashovers!
Using the P-611 in environments that increase the electrical conductivity can lead to the
destruction of the piezo actuator by electric flashovers. Electric flashovers can be caused by
moisture, high humidity, liquids, and conductive materials (e.g., metal dust). In addition,
electric flashovers can also occur in certain air pressure ranges due to the increased
conductivity of the air.

Avoid operating the P-611 in environments that can increase the electric conductivity.

Operate the P-611 only within the permissible ambient conditions and classifications
(p. 41).
NOTICE
Decreased lifetime due to permanently high voltage!
Applying a continuous high static voltage to piezo actuators reduces the lifetime of the piezo
ceramic.

When the P-611 is not used but the electronics remain switched on to ensure temperature
stability, discharge the P-611 (p. 27).
6 Starting and Operating