Vega MINITRAC 31 User Manual

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5Connectingtopowersupply
MINITRAC 31 • Foundation Fieldbus
41782-EN-211203
NPT thread
Inthecaseofinstrumenthousingswithself-sealingNPTthreads,itis
notpossibletohavethecableentriesscrewedinatthefactory.The
freeopeningsforthecableglandsarethereforecoveredwithreddust
protection caps as transport protection.
Beforesetupyouhavetoreplacetheseprotectivecapswithapproved
cableglandsorclosetheopeningswithsuitableblindplugs.Unused
cableglandsdonotprovidesucientprotectionagainstmoistureand
mustbereplacedwithblindplugs.
Thesuitablecableglandsandblindplugscomewiththeinstrument.
Make sure that the cable screen and grounding are carried out ac-
cordingtoFieldbusspecication.Werecommendtoconnectthe
cable screening to ground potential on both ends.
Insystemswithpotentialequalisation,connectthecablescreening
directlytogroundpotentialatthepowersupplyunit,intheconnection
box and at the sensor. The screen in the sensor must be connected
directly to the internal ground terminal. The ground terminal outside
onthehousingmustbeconnectedtothepotentialequalisation(low
impedance).
The voltage supply and signal output are connected via the spring-
loaded terminals in the housing.
Connection to the display and adjustment module or to the interface
adapter is carried out via contact pins in the housing.
Proceedasfollows:
Theprocedureappliestoinstrumentswithoutexplosionprotection.
1. Unscrewthebighousingcover
2. Loosen compression nut of the cable gland and remove blind
plug
3. Removeapprox.10cm(4in)ofthecablemantle,stripapprox.
1cm(0.4in)ofinsulationfromtheendsoftheindividualwires
4. Insert the cable into the sensor through the cable entry
Cable screening and
grounding
Connection technology
Connection procedure

Vega MINITRAC 31 Specifications

General

Brand	Vega
Model	MINITRAC 31
Category	Accessories
Language	English