Honeywell XNX Technical Manual

XNX Universal Transmitter
Section 2 - Installation and Operation
46
5�Attachtheconduittotheremoteterminalbox�
6�Intheremotejunctionbox,connectthewiresfromthe
transmittertothe3-wayterminalblockintheterminalbox�
Note:TheblackandredwiresfromtheMPDarenotusedwiththe
XNXmVpersonalityboard.Ensurethattheyareproperlyisolated
fromliveconnections.DoNOTcutthewires.
Warning: Theenclosuresofremotelymounted705HTsensors
containaluminum.Becarefultoavoidignitionhazardsduetoimpact
orfrictionwheninstalledinZone1locations.
Allcableportdevicesandblankingelementsshallbecertiedin
typeofexplosionprotectionameproofenclosure“Exd”or“Exe”,
suitablefortheconditionsofuseandcorrectlyinstalled�
7� Attachandwirethesensorintheterminalbox�
8�Fittheterminalboxlid�
9�Fitthesensor�
10�CalibratethesensorfollowingtheprocedureinSection3�2
-Calibration�
2.2.9 IR Personality Wiring
TheXNXUniversalTransmitterallowslocalprogrammingand
congurationthroughthelocalLCDdisplayaswellasthrough
theHARTprotocol�Gasconcentrationscanbereadatthe
transmitterfromSearchpointOptimaPlusorSearchlineExcel,
via4-20mAoutputaswellasfromthedigitalcommunication
connectiononTB2thatcanprovideadditionaldiagnostic
information�Thegasconcentrationistakenfromthedigital
communicationlineaslongasitisinagreementwiththe4-20
mAoutput,otherwisethe4-20mAoutputtakesprecedence�
Caution:Dressthewiresproperlysothatcablingdoesnotcontact
switches1-4onthebackofthePOD.
Thetransmitterprovidesa4-20mAoutputreectingtheinput
received�ItalsooffersdiagnosticinformationordataviaHART
oranyoftheadditionalcommunicationoptionsoffered�
ReadSection2�2whichdenestheXNXpowerand4-20mA
outputconnectionsthatarecommontoallpersonalities�
Warning: PoweroffthetransmitterbeforechangingS3orS4.Both
switchesmustbesetineitherSourceorSinkpriortoapplyingpower.
Caution: DonotforcethePODintotheenclosure.Doingsomay
resultindamagetothewiringorthePODormayaltertheswitch
settings.Ifresistanceisfelt,wiresmaybepreventingthePODfrom
beingproperlypositioned.
Donotadjustswitchsettingswhilepowerisappliedtothe
transmitter;doingsowillcausepermanentdamage�
Connecting a Searchpoint Optima Plus or Searchline Excel
ConnectionsfromtheSearchpointOptimaPlusorSearchline
Exceltothetransmitteraremadeviatwopluggableterminal
blocksallowingeaseofinstallationandservice(seeFigure
49)�HArecommendsthatan8”servicelengthofwiringbe
maintained�
Inremotemountcongurations,themaximumdistancebetween

Honeywell XNX Specifications

General

Ingress Protection	IP66/67
Product Type	Universal Transmitter
Enclosure Rating	IP66/67
Display	LCD
Communication Protocols	HART, Modbus, Foundation Fieldbus
Power Supply	24 VDC nominal, 18-32 VDC
Operating Temperature	-40°C to +65°C (-40°F to +149°F)
Material	Aluminum or Stainless Steel
Gas Types	Toxic, Oxygen, and Combustible gases
Output	4-20 mA
Relays	3 programmable relays
Approvals	ATEX, IECEx, UL, CSA
Sensor Compatibility	Electrochemical, catalytic, infrared, and other sensor types