Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Electrical installation
External equipotential
bonding terminal
Connect with
equipotential
bonding of
the plant
Field wiring
A pull relief must be provided for the field wiring cables, when the device is installed with the factory
provided cable glands.
Cable glands and conduit
system for ATEX / IEC-
Ex
Installation according to the regulations of the country, where the product is installed.
Not used entries have to be closed with blanking elements certified for this purpose.
Where available the factory provided parts must be used.
A strain relief must be provided for the field wiring cables, when the device is installed with the factory
provided cable glands.
The diameter of the field wiring cable must match to the clamping range of the cable clamp.
If other than the factory provided parts are used, following must be ensured:
The parts must have an approval adequate to the approval of the level sensor (certificate and type of
protection).
The approved temperature range must be from the min. ambient temperature of the level sensor to the
max. ambient temperature of the level sensor increased by 10K.
The parts must be mounted according to the instructions of the supplier.
Conduit system
for FM and CSA
In addition the regulations of the country must be observed. The used flameproof seals and blanking
elements must have an adequate type approval and a temperature range of at least –40°C (-40°F)
to +80°C (176°F). In addition they shall be suitable for the conditions and correctly installed. Where
available the provided original parts of the manufacturer must be used.
Commissioning
Commissioning only with closed lid.
Opening the lid
Before opening the lid take care, that no dust deposits or whirlings are present.
Do not remove the lid (cover) while circuits are alive.
Additional Safety Instructions for Hazardous Locations
Vibranivo
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VN 4000 a
gi161213
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