Installation FLSE100-XT
FLOWSIC100 Flare-XT · Operating Instructions · 8023761/V1-0/2020-10 · © SICK Engineering GmbH
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5.7.4
Requirements for installation in the Ex zone
General information
● The documentation for zone classification according to EN 60079-10 must be available.
● The devices to be used must be checked for suitability for the application area.
● After installation, an initial test of the device and the plant according to EN/
IEC 60079-17 must be performed.
Cables
● Cables must fulfill the requirements according to EN 60079-14.
● Protect cables especially endangered by thermal, mechanical or chemical stress, e.g. by
laying in protective tubes.
● Cables must be flame-retardant according to DIN VDE 0472 Part 804. The fire behavior
according to B / IEC 60332-1 must be approved.
● Observe the clamping range of the cable glands for cable selection.
● Ex-d cable gland must be suitable for the intended cable type (e.g. cables with or without
armoring).
● Cables and lines for Ex-d cable glands must comply with the requirements in
EN 60079-14.
● Protect the wire ends with connector sleeves against fraying.
● Replace unused cable glands with certified Ex-d sealing plugs.
● Connect or safeguard unused wires to ground so that a short circuit with other
conductive parts is excluded.
● Carry out potential equalization in accordance with EN 60079-14 (see also the following
Section).
● “Conduit” systems must comply with the requirements in EN 60079-14 9.4 and 9.6. In
addition, compliance with national and other relevant standards is required.
● “Conduits” according to IEC 60614-2-1 or IEC 60614-2-5 are not suitable.
● “Conduit” systems must be protected against vibration.
● Use thread sealant according to EN/IEC 60079-14, Section for threads with ½" NPT.
The following applies additionally for intrinsically safe cable connection with intrinsically safe
ultrasonic transducers/probes for the F1F-M, F1F-P, F1F-S sender/receiver units:
● The device marking must at least include the information Ex ia.
● Use only cables delivered by SICK.
The connections of the intrinsically safe ultrasonic probes are designed so that the
individual circuits are safely separated from other intrinsically safe and non-intrinsically safe
circuits.
If the transducer circuits are disconnected while energizing, it still must be observed that the
safe separation from other intrinsically safe and non-intrinsically safe circuits is not
overridden and thus intrinsic safety endangered. For this reason, the associated connection
WARNING:
Risk of explosion
▸
Do not open the enclosures while energized.
▸
Do not connect or disconnect the circuits unless the voltage has been
turned off or the area is safe.
▸
When using alternative connection of devices not belonging to the system,
especially external power supply devices, power supply units, etc., ensure
that the maximum voltage at the connections does not exceed 125 V even
if a fault occurs.
▸
Do not use the device when cables or terminals are damaged.
