Honeywell XNX Technical Manual

XNX Universal Transmitter
Section 2 - Installation and Operation
56
Note: Calibrationofsensorsattachedtothetransmitterismandatory
beforethesensorcanbeusedforgasmonitoring.RefertoSection
3-Calibrationfortheprocedure.
Note: Forinitialcommissioning,refertoEN60079-29-2.
2.4.2 LCD and LED Test
TheLCDandLEDtestisperformedintheinitializationafter
poweringon�AllLCDpixelsandLEDs(red,green,andyellow)
areturnedonfor1�5seconds�TheLCDthengoesblankandthe
LEDsturnoff�
2.4.3XNXIRUnitsConguredforSearchline Excel
WhenpoweringthetransmitterttedwithaSearchlineExcel
sensor,thefollowingproceduremustbefollowedtoassure
properinstallation�
1�Verifythatthetransmitteriswiredcorrectlyaccordingto
thismanualandtheassociatedcontrolequipmentmanual�
2�ApplypowertotheXNXtransmitter�Thiswillinturn
providepowertothesensor�
3�Thesensoroutputwillbeforcedto2mA(defaultfault/
inhibit)�
4�TheXNXtransmitterwillenteraboot-uproutine,displaying
theinitializationscreen�Thetransmitterwillloadits
operatingsystem,datafromthesensor,sensorsoftware
versionnumbers,gastype,thedetectionrangeandspan
calibrationgaslevel,estimatedtimetonextcalibration
due,andselftestresult�Thiswilltakeabout45seconds�

Figure 63. XNX Initialization and General Status Screens
Inthenalstagesofboot-up,warningsandfaults
maybeobserveduntiltheuserperformstheproper
conguration,calibration,andresetactivities
describedinthefollowingsections�SeeSection5for
descriptionsofwarningsandfaults�
5�WhentheXNXcompletesboot-up,performasoftreset
(seeSection3�6SoftReset)ontheExcelsensorfromthe
CalibrationMenu�Whenthesoftresetisintitated,theRS-
485communicationwillbetemporarilyinterruptedand
faultsF120and/orF161maybeobserved�TheRS-485
communicationwillbere-establishedinafewminutesand
thefaultswillautomaticallyberesetintheNon-Latching
mode�F120and/orF161mustberesetmanuallyinthe
Latchingmode�
6�SetthePathLengthfortheapplication,thenalignthe
transmitterandreceiver(seeSection3�5AlignExcel)�
7�Oncethealignmentiscomplete,aZeroCalibration
mustbeperformedontheExcelsensortocomplete
thecommissioningprocess�(SeetheSearchlineExcel


Honeywell XNX Specifications

General

Brand	Honeywell
Model	XNX
Category	Transmitter
Language	English