Honeywell XNX Technical Manual

XNX Universal Transmitter
Section 1 - Introduction
20
Target Gas
Concentration
Alar
m Icon
Alarm Level Triggered
Figure 16. General Status Alarm detail
Inanoverrangecondition,thealarmiconwilldisplayandthetargetgas
concentrationbargraphandalarmsetpointswillash�

Full Scale
Concentration
Alarm Level Triggered
Concentration Bar, Alar
m Setpoints Flash
Figure 17. General Status Over Range detail
Negativevaluesarenotdisplayedanddonotappearonthe
4-20mAoutput,buttheyareindicatedbyfaultsorwarnings
whenpresetthresholdsareexceeded�(Seezerodeviationin
Section6�1�1)
Inadditiontothegraphicalarm,fault,andwarningindicators,
theLEDsonthefrontpanelashinthesepatternsbasedonthe
condition:
Condition
LED
1
Red Green Yellow
Alarm1 Solid
Alarm2 Flashing
Warning Solid
Fault Flashing
2

Health Flashing
1
TherefreshrateoftheLEDsis0.5second.
2
Specialstates(Warmup,Inhibit)arenotindicatedbytheFaultLED.
1.4.3 Entering the Menu Structure
Swipingthemagnetoverthemagneticswitch
✓
or
✖
allowsthe
usertoresetfaultsoralarms,displaycurrentsettings,ormake
adjustmentstothedevice�
Note: IftheEasyResetoptionissettoLock,alarmsandfaults
cannotberesetwithoutlogginginorenteringapasscode.Formore
information,seeSection2.5.1ConfigureSecurity.
Swipingthe
✖
or“escape”magneticswitchactivatestheAlarm
Re-setscreenandallowsalarmstobesilencedandfaultstobe
reset�
The
✓
switchresetsallalarmsandfaultsandreturnstothe
GeneralStatusScreen�Usethe
✖
switchtoreturntothe
GeneralStatusScreenwithoutresettingthealarmsandfaults�
Figure 18. Alarm Reset screen
Twoauthorizationlevelscontrolaccessbaseduponthesecurity
leveloftheuser:Level1(routinemaintenance)andLevel2
(technicianandpasswordadministrator)�Thedefaultpasscodes
forbothlevelsare“0000”andmustberesetafterinstallation
tocontrolaccess(seeSection2�5�1ConfigureSecurity)�In
general,accesstoneithersecuritylevelrestrictstheuserto
viewingthetransmitter’sdisplay�Ifdesired,theEasyResetfrom
MainStatusoption allowsalarmandfaultresetswithoutrequiring
accesstoeithersecuritylevel�

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