3. Installation
3.4 Preparing the device for operation
3.4 Preparing the device for operation
CAUTION
INTERFERENCES
Screw all plug-in connections or lock them into place in order to
improve screening.
Signal cables must not be routed in the same cable duct with power
cables.
Before putting the system into operation, check all cable connections
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.
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
into the existing ambient temperature before switching it on. Do not
expose the XH-303 Web Panel to direct thermal radiation from heat-
ing appliances.
XH-303
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