Safety Precautions - PI PIFOC P-725 series User Manual

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Safety Precautions

CAUTION
Dangerous voltage and residual charge on piezo actuators!
The P-725 is driven by piezo actuators. Temperature changes and compressive
stresses can induce charges in piezo actuators. After being disconnected from the
electronics, piezo actuators can also stay charged for several hours. Touching or
short-circuiting the contacts in the connector of the P-725 can lead to minor injuries.
In addition, the piezo actuators can be destroyed by an abrupt contraction.
 Do not open the P-725.
 Discharge the piezo actuators before installation:
Connect the piezo actuator to the switched-off PI controller.
 Do not pull out the connector from the electronics during operation.
For P-725 with sub-D connector:
Touching the contacts in the connector can lead to an electric shock (max.
120 V DC) and minor injuries.
 Do not touch the contacts in the connector.
 Secure the connector of the piezo actuator with screws against being pulled out
of the controller.
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 and there is a risk of electric shock. In the case of malfunction or
failure of the system, touching the P-725 can result in minor injuries.
 Connect the P-725 to a protective earth conductor before startup.
 Do not remove the protective earth conductor during operation.
 Use electrically conductive materials (e.g., screws and flat washers) for mounting
the protective earth conductor.
 Make sure that the contact resistance is <0.1 Ω at 25 A at all connection points
relevant for mounting the protective earth conductor.
 If the protective earth conductor has to be temporarily removed (e.g., for
modifications), reconnect the P-725 to the protective earth conductor before
starting it up again.
NOTICE
Unsuitable cables!
Unsuitable cables can damage the electronics.
 Only use cables from PI for connecting the P-725 to the electronics.
Physik Instrumente (PI ) GmbH & Co. KG, Auf der Roemerstr. 1, 76228 Karlsruhe/Germany
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email info@pi.ws, www.pi.ws
2018-11-13
P725T0010, valid for P-725