Pepperl+Fuchs LAL-SRW3, Manual

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WARNING DEVICE LAL-SRW3
Safety
EN
1.7 Installation and Commissioning
1.7.1 Installation of the warning device
The device must only be installed
outside potentially explosive zones .
The device must not be installed in places with potentially aggressive vapors.
The device must be free of voltage during installation and maintenance.
The warning system must only be connected to the supply voltage after complete
mounting and connection of the sensors.
The identification plate must not be removed.
1.7.2 Connection to sensors for potentially explosive zone
In oil/petrol separators, only sensors that are certified for installation in potentially
explosive zones may be connected.
The type of protection of the external equipment must comply with the protection
type specified for the total system.
1.7.3 Sensor cables
Sensor cables must not be installed in cable or conductor bundles together with
other current circuits. Avoid installing sensor cables parallel to other cables that
may transmit interfering signals, which impair the sensor signal and thus the alarm
function. The sensor itself must not be grounded.
If you extend the sensor cable, observe the applicable ATEX specifications with
regard to color, quality and durability. Use unshielded 2-wire cables with a
cross-section of 1 mm
²
for each sensor.
1.8 Installation in connection with intrinsically safe circuits
Installation of the intrinsically safe power circuits of the devices is permitted in
potentially explosive zones, whereby, in particular, safe separation from all
non-intrinsically safe power circuits must be guaranteed.
The intrinsically safe current circuits must be installed according to valid setup
regulations.
For the interconnection of the intrinsically safe field devices and the intrinsically
safe power circuits of the associated devices, the respective maximum values of
the field device and the associated device with regard to explosion protection
must be observed (proof of intrinsic safety). EN 60079-14/IEC 60079-14 must be
observed.