VEGA FIELDBARRIER - Manual (Page 10)

FieldBarrier
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
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4.5 Commissioning and installation
The FieldBarrier may be installed according to its designation in Zones 1 and Zone 22
(non-conductive dust) .
When installing intrinsically safe fieldbus segments, EN 60079-14/IEC 60079-14 must
be observed. For the Federal Republic of Germany, the "National Foreword“ of DIN
EN 60079-14/VDE 0165 Part 1 must also be observed.
The switch for the internal bus termination can be activated even during operation.
The following identifying values must be observed when connecting fieldbus trans-
mission lines:
• For the cable parameters to be observed, please refer to chapter 5.2.1
• The insulating length of the wire is 9 mm
• Wire cross-section 0.2 mm² to 2.5 mm² or AWG 24 to 14
• Whenever finely stranded conductors must be used, the strand ends must be pro-
tected from fraying, for example by using end splices.
• Tightening torque of the screw terminals (if present) 0. 4... 0.5 Nm
• Tightening torque of the screwed connections of cable glands for FieldBarriers
F2D0...
The tightening torques of the slotted nuts depend on the cable used and must
therefore be determined by the user. The cap nuts must be securely tightened.
Tightening the cap nuts too tight can have a negative effect on the protection class.
The following figures should be taken as rough guides:
A fieldbus transmission line with an insulation voltage between the bus line and shield
of at least 500 V must be used for intrinsically safe fieldbus segments.
The Declaration of conformity must be observed. It is especially impor-
tant to maintain any "Special conditions" that may be indicated.
When using the outputs designated intrinsically safe in Dust-Ex range
"D", only field devices certified for this purpose may be connected.
When connecting intrinsically safe field devices with the FieldBarrier,
the highest level of explosion protection should be considered (Proof of
Intrinsic Safety).
Type Cap nut Lower part
F2D0-FB-Ex4.CG 2.5 Nm 3.75 Nm
F2D0-FB-Ex4.CGB 4.17 Nm 6.25 Nm
F2D0-FB-Ex4.CGS 4.17 Nm 6.25 Nm
F2D0-FB-Ex4.CGAB 22 Nm 28 Nm