Honeywell XNX Technical Manual

XNX Universal Transmitter
Section 2 - Installation and Operation
49
Local HART
IS Barrier
(optional)
Optional Local HART
IS Barrier must be
connected to J1
4
3
2
1
Sig
Gnd
+24
+
9
7
6
5
J1 HART
S1 S2
Terminal Block 1
B
A
1
2
Terminal Block 2
IR Data
S3 S4
8
HART
Adaptor
Searchline Excel
Internal
body screw
To local
building
ground
External
body screw
Mounting plate
must be connected to
the same earth ground
as the XNX transmitter
Isolation kit is not
important in this
configuration
Control
Room
Conduit/armored cable
Earth loop through the
conduit/armored cable
must be avoided
RFI and EMC shield
Control
Room
XNX
Transmitter
Armor
RFI and EMC shield
Notes:
Ground loops through the armor must be avoided.
If armor is connected to the XNX transmitter via a conductive
EXd cable gland, the armor must not be earthed at any other
location (this will prevent ground loops). Since it is already earthed
at the transmitter. Armor must be grounded only if an isolating gland
is used to connect it to the transmitter.
Ground loops through the RFI and EMC shield must be avoided.
RFI and EMC shield must be connected to a clean/instrumentation
earth ground at the control room. To avoid an earth loop, connect it
only at the control room (not at the transmitter).
Figure 53. IR Personality Wiring - Searchline Excel
Attaching the Searchpoint Optima Plus to the XNX Universal
Transmitter
ForM25entries,inserttheseal(P/N1226-0410)intotheproper
cable/conduitopeningthenthreadthelocknut(P/N1226-0409)
ontotheOptimatotheendofthethreads�ThreadtheOptima
bodyintothetransmitteruntilthesealcompressesand/orthe
Optimabottomsout�Reverseuntilthesemi-circularpatternof
holesonthefrontoftheweatherprotectionareonthebottom
(seebelow)�TightenthelocknuttotheXNXbody�
Figure 54. Searchpoint Optima Plus orientation
The3/4”NPTportsdonotrequirethesealandlocknut�Theform
ofthethreadsprovidepositivelockingandsealing�
Note: WhenattachingtheSearchpointOptimaPlus,coatthethreads
withananti-seizecompoundtopreventcorrosion.
Searchline Excel and Searchpoint Optima Plus Remote Installation
JunctionBoxesareavailablefortheSearchlineExceland
SearchpointOptimaPlustofacilitateremotemountingfrom
theXNXUniversalTransmitter�Junctionboxesareavailable
forinstallationsrequiringUL/CSAorATEXapprovals�Consult


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