Eaton XH-303, Руководство пользователя

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2. Safety regulations
2.3 Device-specific hazards
to make sure that everything has been wired properly.
Make sure that all voltages and signals have the required values as
specified in the technical data.
CAUTION
SAFELY DIVERTING ELECTRICAL INTERFERENCE CURRENTS
XH-303The must be connected to a central earth point with a con-
ductor that is as short and has as low a resistance as possible.
l
Ground connection characteristics:
Wire cross-sectional area ≧ 1.5 mm², length ≦ 350 mm
The XH-303 needs to be connected to the conductive structure in,
e.g., the control panel using the central earth point (earthing screw).
This method of earthing is mandatory required for proper function.
DANGER
STRAY CURRENTS
Large equalizing currents between the functional earthing system
and the ground system of different devices may result in fire or in mal-
functions due to signal interference.
If necessary, route an equipotential bonding conductor, with a
cross-sectional area that is several times larger than that of the
cable shielding, parallel to the cable.
CAUTION
NON-GALVANICALLY-ISOLATED INTERFACES
The XH-303 may be damaged by potential differences.
The GND terminals of all bus modules must be connected.
Do not connect the connector to the XH-303 or disconnect it
without first de-energizing the system.
CAUTION
SHORT-CIRCUIT HAZARD
If the XH-303 Web Panel is or has been exposed to environmental
fluctuations (ambient temperature, air humidity), condensation may
form on or inside XH-303. As long as this condensation is present,
there will be a short-circuit hazard.
Do not switch on the XH-303 Web Panel when it has condensation in
or on it.
If the XH-303 Web Panel has condensation in or on it, or if the panel
has been exposed to environmental fluctuations, let the XH-303 settle
XH-303 09/22 MN048029EN Eaton.com
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