HK Instruments DPT-IO-MOD Series User manual

Copyright HK Instruments 2019 www.hkinstruments. Installaon version 8.0 2019
INSTALLATION
INSTRUCTIONS
DIFFERENTIAL PRESSURE TRANSMITTERS
DPT-IO-MOD Series
• READ THESE INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS
DEVICE.
• Failuretoobservesafetyinformaonandcomplywith
instruconscanresultinPERSONALINJURY,DEATHAND/OR
PROPERTY DAMAGE.
• Toavoidelectricalshockordamagetoequipment,disconnect
powerbeforeinstallingorservicinganduseonlywiringwith
insulaonratedforfulldeviceoperangvoltage.
• Toavoidpotenalreand/orexplosiondonotuseinpotenally
ammableorexplosiveatmospheres.
• Retaintheseinstruconsforfuturereference.
• Thisproduct,wheninstalled,willbepartofanengineered
systemwhosespecicaonsandperformancecharacteriscs
arenotdesignedorcontrolledbyHKInstruments.Review
applicaonsandnaonalandlocalcodestoassurethatthe
installaonwillbefunconalandsafe.Useonlyexperiencedand
knowledgeabletechnicianstoinstallthisdevice.
SPECIFICATIONS
ThankyouforchoosinganHKInstrumentsDPT-IO-MODseriesdif-
ferenalpressure transmier. TheDPT-IO-MODdierenalpres-
suretransmierforairconformstoModbusoverseriallineprotocol,
usingRTUtransmissionmodeandRS485interface.Thedigitalout-
putsignalissentoverModbusenablingtheDPT-IO-MODtocon-
nectdirectlytoaeldcommunicaonsnetwork.
DPT-IO-MODrequireslesswiringthantradional3-wiretransmit-
ters,sincemulpledevicescanbeconnectedonserialline.
TheDPT-IO-MODincludesanInputterminalthatenablesreading
ofmulpleothersignalssuchastemperatureorcontrolrelaysover
Modbus.TheInputterminalhastwoinputchannelsdesignedtoac-
cept0−10V,NTC10k,Pt1000,Ni1000/(-LG),andBININ(potenal
free contact) signals. For example, DPT-IO-MOD can read values
fromonedierenalpressuremeasurementpointandtwotempera-
turemeasurementpoints.
DPT-IO-MODseriesdevicesarecommonlyusedinHVAC/R
systems for:
•fan,blowerandltermonitoring
•pressureandowmonitoring
•valveanddampercontrol
•pressuremonitoringincleanrooms
SPECIFICATIONS
Performance
Accuracy (from applied pressure):
Model2500:
Pressure<125Pa=1%+±2Pa
Pressure>125Pa=1%+±1Pa
Model7000:
Pressure<125Pa=1.5%+±2Pa
Pressure>125Pa=1.5%+±1Pa
(Including:generalaccuracy,linearity,hysteresis,long
termstabilityandrepeonerror)
Input accuracy:
<0,5%
Response me:
1...20sselectableviamenu
Overpressure:
Proofpressure:25kPa
Burstpressure:30kPa
Communicaon
Protocol:MODBUSoverSerialLine
TransmissionMode:RTU
Interface:RS485
Byteformat(11bits)inRTUmode:
 CodingSystem:8-bitbinary
 BitsperByte:
  1startbit
  8databits,leastsignicantbitsent
  rst
  1bitforparity
  1stopbit
Baudrate:selectableinconguraon
Modbusaddress:1−247addressesselectablein
conguraonmenu
Zeropointcalibraonopons:
•Manualpushbuonautozero
•ViaModbuswritecoil
Technical Specicaons
Media compability:
Dryairornon-aggressivegases
Measuring units:
Selectableviamenu(Pa,mbar,inchWC,mmWC,psi)
Measuring element:
MEMS,noow-through
Environment:
Operangtemperature:-20...+50°C
Temperaturecompensatedrange0...+50°C
Storagetemperature:-40...+70°C
Humidity:0to95%rH
Physical
Dimensions:
Case:102.0x71.5x36.0mm
Weight:
150g,withaccessories290g
Mounng:
2each4.3mmscrewholes,onesloed
Materials:
Case: ABS
Lid:PC
Pressure inlets: Brass
Ductconnectors:ABS
Tubing:PVC
Protecon standard:
IP54
Display:
2-linedisplay(12characters/line)
Line1:acvemeasurement
Line2:units
Electrical Connecons:
4+3springloadterminals,max1.5mm2
CableEntry:M20
Pressure ngs:
Maleø5,0mmand6,3mm
Electrical
Supply voltage:
24VACorVDC±10%
Power consumpon:
<1.3W
Output signal:
viaModbus
Input signals:
2xinput(0...10v,NTC10k,Pt1000,NI1000/(-LG),or
BININ)
Conformance
MeetsrequirementsforCEmarking:
EMCdirecve2014/30/EU
RoHSDirecve2011/65/EU
WEEEDirecve2012/19/EU
INTRODUCTION
APPLICATIONS
WARNING
COMPANY WITH
MANAGEMENT SYSTEM
CERTIFIED BY DNV GL
= ISO 9001 = ISO 14001 =
RoHS 2
2011/65/EU

Copyright HK Instruments 2019 www.hkinstruments. Installaon version 8.0 2019
SCHEMATICS
DIMENSIONAL DRAWINGS
INSTALLATION
Figure 1a - Surface mounng
STEP 1: MOUNTING THE DEVICE
1)Mountthedeviceinthedesiredlocaon(seestep1).
2)Openthelidandroutethecablethroughthestrainreliefand
connectthewirestotheterminalblock(s)(seestep2).
3)Thedeviceisnowreadyforconguraon.
WARNING!Applypoweronlyaerthedeviceisproperlywired.
1)Selectthemounnglocaon(duct,wall,panel).
2)Usethedeviceasatemplateandmarkthescrewholes.
3)Mountwithappropriatescrews.
Figure 1b - Mounng orientaon
Figure 1c - Applicaon connecons
DPT
DPT
Display connecon
A
B
24 V
GND
LEDs
Joysck 1
Joysck 2
Joysck 3
Select
Up
Down
Menu buons
Terminal
blocks
Pressure
sensor
Input terminal
configuraon
jumpers
Input 1
Input 2
GND
GND
InputOutput
YES NO NO
Stac pressure Filter/Damper
monitoring
Fan/Blower
monitoring
Not
connected

Copyright HK Instruments 2019 www.hkinstruments. Installaon version 8.0 2019
STEP 2: WIRING DIAGRAMS CONFIGURATION CONTINUED
ForCEcompliance,aproperlygroundedshieldingcableisrequired.
1)Unscrewthestrainreliefandroutethecable(s).
2)Connectthewiresasshowningure2aand2b.
3)Tightenthestrainrelief.
Figure 2a - Wiring diagram
Figure 2b - Wiring diagram example for input signals NOTE! Always zero the device before use.
Supplyvoltagemustbeconnected onehour before thezeropoint
adjustmentiscarriedout.AccessviaModbusorbypushbuon.
1)Loosebothtubesfromthepressureinlets+and-.
2)Presstheselectbuonbriey.
3)WaitunltheLEDturnsoandtheninstalltubesagainforthe
pressureinlets.
STEP 3: CONFIGURATION
Input 1
Input 2
GND
GND
Pt1000
NTC10k
J1
J2
J3
IN1 IN2
Input 1 Pt1000 temperature:
Funcon 04 - Read input register 3x0005
Input 2 NTC10k temperature:
Funcon 04 - Read input register 3x0008
1)AcvatethedeviceMenubypushingthetheselectbuonfor2
seconds.
2)SelecttheaddressforModbus:1...247
BAUD RATE
9600
SELECT
UP
DOWN
ADDRESS
99
SELECT
UP
DOWN
PARITY BIT
NONE
SELECT
UP
DOWN
3)Selectthebaudrate:9600/19200/38400.
4)Selecttheparitybit:None/Even/Odd
5)Selectthepressureunitfordisplay:Pa/inchWC/mmWC/psi/mbar
PRESS. UNIT
Pa
SELECT
UP
DOWN
6)Selecttheresponseme:1...20s
RESPONSETIME
20 s
SELECT
UP
DOWN
7)Pushtheselectbuontoexitmenu.
SELECT
EXIT MENU SELECT
STEP 4: ZERO POINT ADJUSTMENT
SELECT
STEP 5: INPUT SIGNAL CONFIGURATION
InputsignalscanbereadoverModbusviaDPTMODRS485interface.
Signals Accuracy for measurement Resoluon
0...10V <0,5% 0,1%
NTC10k <0,5% 0,1%
Pt1000 <0,5% 0,1%
Ni1000/(-LG) <0,5% 0,1%
BININ(potenalfreecontact)
Thejumpersshouldbesetaccordingtotheinstruconsbelowandthe
valueshouldbereadfromtherightregister.Bothinputscanbecong-
uredindependently.
Figure 3 - Input signal conguraon
J1
J2
J3
IN1 IN2
J1
J1
J1
J2
J2
J2
J3
J3
J3
NTC10k / BIN IN
Pt1000 / Ni1000(-LG)
0...10 V
A
B
24 V
GND
+ Power Supply
24VDC / 24VAC
Input 1
Input 2
GND
GND
Modbus

Copyright HK Instruments 2019 www.hkinstruments. Installaon version 8.0 2019
Thesellerisobligatedtoprovideawarrantyofveyearsforthedeliv-
eredgoodsregardingmaterialandmanufacturing.Thewarrantyperiod
isconsideredtostartonthedeliverydateoftheproduct.Ifadefectin
rawmaterialsoraproduconawisfound,thesellerisobligated,when
theproductissenttothesellerwithoutdelayorbeforeexpiraonof
thewarranty,toamendthemistakeathis/herdiscreoneitherbyre-
pairingthedefecveproductorbydeliveringfreeofchargetothebuy-
eranewawlessproductandsendingittothebuyer.Deliverycosts
fortherepairunderwarrantywillbepaidbythebuyerandthereturn
costsbytheseller.Thewarrantydoesnotcomprisedamagescausedby
accident, lightning, ood or other natural phenomenon, normal wear
andtear,improperorcarelesshandling,abnormaluse,overloading,im-
properstorage,incorrectcareorreconstrucon,orchangesandinstal-
laonworknotdonebythesellerorhis/herauthorizedrepresentave.
Theseleconofmaterialsfordevicespronetocorrosionisthebuyer’s
responsibility,unlessotherwiseislegallyagreedupon.Shouldtheman-
ufactureralterthestructureofthedevice,thesellerisnotobligatedto
makecomparablechangestodevicesalreadypurchased.Appealingfor
warrantyrequiresthatthebuyerhascorrectlyfullledhis/herdues
arisenfromthedeliveryandstatedinthecontract.Thesellerwillgive
anewwarrantyforgoodsthathavebeenreplacedorrepairedwithin
thewarranty,howeveronlytotheexpiraonoftheoriginalproduct’s
warrantyme.Thewarrantyincludestherepairofadefecvepartor
device, orifneeded,a new partordevice,butnotinstallaonorex-
change costs. Underno circumstance isthe seller liable for damages
compensaonforindirectdamage.
Register Parameter descripon Data Type Value Range
3x0001 Programversion 16bit 0...1000 0,00...99,00
3x0002 Pressurereading 16bit -250...2500/7000 -250...2500/7000(Pa)
3x0004 Input1:0...10V 16bit 0...1000 0...100%
3x0005 Input1:Pt1000 16bit -500...500 -50...+50°C
3x0006 Input1:Ni1000 16bit -500...500 -50...+50°C
3x0007 Input1:Ni1000-LG 16bit -500...500 -50...+50°C
3x0008 Input1:NTC10k 16bit -500...500 -50...+50°C
3x0009 Input2:0...10V 16bit 0...1000 0...100%
3x0010 Input2:Pt1000 16bit -500...500 -50...+50°C
3x0011 Input2:Ni1000 16bit -500...500 -50...+50°C
3x0012 Input2:Ni1000-LG 16bit -500...500 -50...+50°C
3x0013 Input2:NTC10k 16bit -500...500 -50...+50°C
Funcon04-Readinputregister
Funconcode02-Readinputstatus
Register Parameter descripon Data Type Value Range
1x0001 Input1:BININ Bit0 0...1 On-O
1x0002 Input2:BININ Bit0 0...1 On-O
Funcon05-Writesinglecoil
Register Parameter descripon Data Type Value Range
0x0001 Zeroingfuncon Bit0 0...1 On-O
Funconcode06-Writesingleregister
Register Parameter descripon Data Type Value Range
4x0001
BetavalueofNTCthermistor 16bit 0...30000 1...30000(Default:4220)
STEP 6: MODBUS REGISTERS WARRANTY POLICY
RECYCLING/DISPOSAL
The parts le over from installaon should be
recycled according to your local instrucons.
Decommissioned devices should be taken to a
recyclingsitethatspecializesinelectronicwaste.