Igema EWLI-3B Manuel du propriétaire

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ElectronicRemoteWaterLevel

IndicatorTypeEWLI-3B

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forusewithlevelprobes:EL65orEL60

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D-05-B-30869-EN-0

Issuedate11/2015

TableofContents

1.RisksandSafetyPrecautions..........................................................................................................................................................................3

1.1Generalsafetyinstructions...................................................................................................................................................................3

1.2Exclusionofliability................................................................................................................................................................................4

2.Contentsofthepackaging.............................................................................................................................................................................5

3Useincompliancewithregulations..............................................................................................................................................................5

4.SystemDescription..........................................................................................................................................................................................5

4.1Components............................................................................................................................................................................................5

4.2Function....................................................................................................................................................................................................6

4.3Setup.........................................................................................................................................................................................................7

4.4Componentsofthecontrolunit(CU)..................................................................................................................................................8

4.5Operation..................................................................................................................................................................................................8

4.6Errormessages........................................................................................................................................................................................9

4.7Overviewofthesystemproperties.....................................................................................................................................................9

4.8Displayunit(DU)...................................................................................................................................................................................10

5.AssemblyandInstallation............................................................................................................................................................................11

5.1Add-onhousing.....................................................................................................................................................................................11

5.1.1Installationdimensionsanddescriptions..............................................................................................................................12

5.1.2Installation...................................................................................................................................................................................13

5.2.ControlunitCU.....................................................................................................................................................................................13

5.2.1Installationdimensionsanddescriptions..............................................................................................................................13

5.2.2Powerconnection......................................................................................................................................................................14

5.3.MeasuringunitMU..............................................................................................................................................................................16

5.4DisplayunitDU(optional)...................................................................................................................................................................17

5.4.1Installationdimensionsanddescriptions..............................................................................................................................17

5.4.2Powerconnection......................................................................................................................................................................18

5.5Systemconnection...............................................................................................................................................................................18

6.ConfigurationviaMenu................................................................................................................................................................................19

7.Specialfeaturesofsystemsetup.................................................................................................................................................................22

8.Commisioning.................................................................................................................................................................................................22

8.1Systemsetup..........................................................................................................................................................................................22

8.2Factorysettings.....................................................................................................................................................................................22

8.3Commisioningwhenstartinguptheboiler.....................................................................................................................................23

8.4Commisioningduringboileroperation............................................................................................................................................23

9.TechnicalData.................................................................................................................................................................................................23

9.1Devicedata.............................................................................................................................................................................................23

9.2Mainstransformer................................................................................................................................................................................25

9.3Maximumratingsofpotentialfreecontacts...................................................................................................................................25

9.4Dataplate...............................................................................................................................................................................................26

10.SystemMaintenance...................................................................................................................................................................................26

10.1Depressurisingadd-onhousing.......................................................................................................................................................26

10.2Dismantlingandfittingprobes........................................................................................................................................................27

11.Faultanalysisandrectification..................................................................................................................................................................27

12.Warranty........................................................................................................................................................................................................29

13.DeclarationofConformity..........................................................................................................................................................................30

14Attachment....................................................................................................................................................................................................32

Safetyinstructions

1.RisksandSafetyPrecautions

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1.1Generalsafetyinstructions



1.Avoidanceofriskstopersonsandproperty

Onlyusethedevicesuppliedinaccordancewiththeintendedplanning.

Extensionsandmodificationstothedevicemustonlybecarriedoutwithourapproval.

Observeaccidentpreventionregulationsandsystem-specificsafetyinstructions.

Readandobservefittingandoperatinginstructions.

Thedevicemustonlybefittedandputintooperationbyappropriatetrainedpersons.

2.Limitationsofuse

Thedevicemustonlybeusedinaccordancewiththedetailsintheseoperatinginstructionsorfor

theparametersagreedinthesupplycontract(seenameplate)andtheapplication.

Approvalforthisdevicelosesitsvalidityifchangesnotauthorisedbyushavebeenmade.

Thesafetyofthewholeboilersystemintowhichthisdeviceisfittedliesintheresponsibilityofthe

installerofthesystem.

Ifthisdeviceisinsertedincorrectlythefunction/protectionexpected from this device may be

impaired.

3Avoidanceofrisksanddamage

DisseminatetheInstallationandoperatinginstructionstothedepartmentsresponsiblefor“goods

in,transport,assembly,commissioningandmaintenance”.

If this device is passed on to third parties, these Installation and operating instructions in the

relevantlanguageofthecountrymustaccompanyit.

Assemblyworkonthedeviceshouldonlybecarriedoutbytrainedstaffspeciallycommissioned

andonlyifthedeviceisdisconnected.

ReadandobservetheInstallationandoperatinginstructionscarefully and keep them in a safe

place.

Takenoteofandfollowthesafetyinstructionsprintedinbold and highlighted in the

individualsections!

Whentransporting,avoide.g.knocksandputtingdownheavily,thiscanleadtodamage.

Forintermediatestorageensurethatthestoragelocationissuitableforthedevice.

Thestoragelocationmustbedryandthedevicesecuredagainstdamage.

Thisdevicemustnotbeusedinareasatriskofexplosion.

4.Symbols

IntheseInstallationandoperatinginstructions,safetyinstructionsarespeciallymarkedwiththe

followingsymbols:



meansthatiftheyarenotobservedthereisrisktolifeand/orsignificantdamageto

propertymayoccur.

Danger



meansthatattentionisparticularlydrawntotechnicalrequirements.



Attention



1.2Exclusionofliability



IGEMAGmbHMess-undRegelsystemewillassumenoliabilityiftheabove-mentionedregulations,

instructionsandsafetyprecautionsarenotnotedandfollowed.



2.Contentsofthepackaging

1EWLI-3Bconsistingof:

Add-onhousingwithnumberofprobesordered(EL65(<=32bar)orEL60(>32bar))

Measuringunit(MU);fittedontotheadd-onhousingandfullywired

Controlunit(CU)

1Powersupply(top-hatrail)forsupplyingthecontrolunit(CU)with24VDC

 1setofinstallationandoperatinginstructions



3Useincompliancewithregulations

The EWLI-3B (electronic water level indicator) is used as a remote water level indicator for steam

boilersor(pressure)tankswithelectricallyconductiveliquids.Dependingontheregulationsapplied

theEWLI-3Bcanalsobeusedasamulti-controlsystem(indicator-limiter‒controller),bymeansof

theprogrammableassignmentofoutputs(change-overcontacts)relativetothelevels.TheEWLI-3B

add-onhousingisfastenedtotheprocessconnectionsprovidedonthetank.

The EWLI-3B has been developed in accordance with the requirements of EC Directive 97/23/EC

(2003)andthestandards:

DINEN129521-7, DINEN129531-6,

 DINEN610006-2  DINEN610006-4

 DINEN610003-2  DINEN610003-3

DINEN610101



Thedeviceisusedformeasuringthelevelofaliquid.Itisusedpredominantlyonsteamboilers.With

the aid of probes the EWLI-3B measures the current level in theadd-onhousingandthusinthe

boiler.Withtheabilityofhavingupto32Probes(minimum2)oneachievesaquasi-continuouslevel

display,takingintoaccountaminimumprobespacingof36mm.



4.SystemDescription



4.1Components

-Add-onhousingwithnumberofprobesordered(EL65(<=32bar)orEL60(>32bar))

-Measuringunit(MU);fittedontotheadd-onhousingandfullywired

-Controlunit(CU)withseparatepowersupplyunit;fortop-hatrailfittinginthedistributioncabinet

-Displayunit(DU)‒optional

-variousCAN-Busconnectingcables

4.2Function

TheEWLI-3Blevelindicatorworksonthebasisoftheconductivefilllevelmethodofmeasurement

whereby the electric conductivityofthemediumisused.Theconductivity of the medium is

measuredinµS/cm.Forthesecurefunctioningofthismethodof measurement a minimum

conductivityofthesubstancetobemeasuredisrequired.

Theconductivemethodofmeasurementmakestwostatements:electrodesubmergedorelectrode

emerged.

Themeasuringunit(MU)feedsandevaluatestheinstalledprobes(2to32innumber).Thestateof

theprobesattachedintheadd-onhousingisthensenttothecontrolunit(CU).

Thecontrolunit(CU)determinesthereactionsnecessaryfromthereceiveddatafromthemeasuring

unit(MU).



SystemstatusLCDdisplayLEDs1*4mA..20mAOutputcontact2*

Correct

operation

IGEMA

EWLI3-CU



4mA+

(16mA/numberofprobesfitted)

x

Numberofprobessubmerged3*

A:activated

F:activated

Z:dependingonassignment/

programming

correctoperation

withfailureofone

24Vsupply4*

(40)PIN1

powertoolow5*



4mA+

(16mA/numberofprobesfitted)

x

Numberofprobessubmerged3*

A:activated

F:activated

Z:dependingonassignment/

programming

Systemerror(65)MU

CANBUSnodata5*



2mA A:nopower/stateofrest

F:nopower/stateofrest

Z:allwithoutpower

Waterlevel

alarm

(LLW/HHW)

(33)

LLWalarm5*



4mA+x(LLW)

20mA‒y(HHW)

x,ycorrespondingto

programmedProbe

A:nopower/stateofrest

F:activated

Z:dependingonassignment/

programming

Wateroversteam (“No”)please

checkprobe:“No”5*



2mAA:activated

F:nopower/stateofrest

Z:dependingonassignment/

programming

Probeerror7*

(LLW/HHW)

(33)

LLWalarm5*



2mAA:nopower/stateofrest

F:nopower/stateofrest

Z:dependingonassignment/

programming

Probeerror6*

(assigned)

(“No”)please

checkprobe:“No”5*



2mAA:nopower/stateofrest

F:nopower/stateofrest

Z:assignedwithoutpower;

Rest:dependingon

assignment/progr.

Probeerror6*

(notassigned)

(“No”)please

checkprobe:“No”5*



2mAA:activated

F:nopower/stateofrest

Z:dependingonassignment/

programming

1*FullylitLED:continuouslight/halflitLED:flashing

2*Description: “A”Alarmoutput “F”Erroroutput “Z”Assignedoutput

3*Example: 12probes/4submerged: ...mA=9.3mA(4mA+(16mA/12)*4)

 16probes/7submerged: ...mA=11.0mA(4mA+(16mA/16)*7)

 15probes/13submerged: ...mA=17.9mA(4mA+(16mA/15)*13)

4*Whenusing2powersupplyunits

5*Example

6*SeeChap.7Specialfeaturesofsystemsetup

7*AsLLW/HHW-Alarmhaspriority,thismessageisshown.However,consideringtheLED-display(yellowflashesalso)the

probefaultisrecognisable.



Safe operating mode during which the output contacts of the device go into rest position,

correspondsatthesametimetothede-energisedstateofthecontrolunit.

TheDU(optional)displayunitcanbeusedasaremoteindicator.ThestatusLEDsshowthesameas

theLEDsoftheCU.InadditioneachprobeislinkedtoanLED.Greenshowsasubmergedprobe,reda

probeinthesteamspaceandaflashingLEDmeansaprobeinanincorrectstate.Theoutputcurrent

ofthe4mA..20mAoutputoftheDUiscalculatedlikethatoftheCU.



4.3Setup

ForensuringhighavailabilityIGEMArecommendstheuseof2powersupplyunits(redundancy).In

termsofhardwaretheCUisdesignedforoperationwith2powersupplyunits.

Boththemeasuringunit(MU)andthecontrolunit(CU)have2independentelectroniccircuitswith

their own processors. All processorscarryoutregularself-tests for internal faults in the electronic

circuit.Thisprovidesself-monitoringofthedeviceandthusahighersafetystandard.

Measuringunit:

Bothelectroniccircuitsrecordthestateoftheprobesandsendittothecontrolunit.

Controlunit:

Bothelectroniccircuitsevaluatethestatusmessagesofbothelectroniccircuitsofthemeasuring

unit.Ifbothstatusmessagesareidenticaltherequiredreaction(Chap.4.2)iscarriedout.

Aplausibilitychecktakesplace.

Eachelectroniccircuitswitchesits“own”relay(SPDT)forthecorrespondingoutput.Onlywhen

bothrelaysofbothelectroniccircuitsaredriven(activated)equally(e.g.duringnormaloperating

status)istheoutputactive.



Theoutputcontactsdonothaveanylatching.Theswitchingbehaviouris

exclusively in line with the desired specified (programmed) state. If latching is

required,thismanuallocking(latching)mustbecarriedoutonsite.



4.4Componentsofthecontrolunit(CU)

Thecontrolunitcontains:

1LCDdisplay(2-lineeach16characters)forcommunicationwiththeoperator

 (programmingandinformationdisplay)

4buttonsforprogramming

3LEDsasstatusindication

1SPDTalarmoutputforfilllevelsignalling(fixed);thecorrespondingprobes(LWand/orHW)

 canbefreelychosen

1SPDTerroroutput(fixed);outputisinstateofrest,ifanysystemerroroccurs

7SPDToutputsfreelycontrollable(seeassignmentplanChap.:5.2.2)

 14mA..20mAoutputforloadsupto500Ω,notgalv.isolated



4.5Operation



OperationoftheEWLI-3Biscarriedoutbythe4buttonsoftheCU.ThisisdescribedinChap.6

“ConfigurationviaMenu”.

IGEMA

EWLI3-CU



4.6Errormessages

IntheLCDdisplayerrorsfromtheevaluatorandprobesaredisplayednumber-codedandinplaintext

abbreviations.

IfthereisaDUpresent(optional),errorsbyevaluatorandprobesare displayedinthe7-segment

displaynumber-codedand2-digit.

ForanalysisanderrorcorrectionseeChap.10.



4.7Overviewofthesystemproperties



-Upto32probes(minimum2probes)forquasi-continuouslevelmeasuring

-CanbeuseduptoPS=200bar//TS=367°C

-Doublepowersupplyforhighavailability(redundancy)withdisplayoffailureofonepowersupply

-Self-monitoringelectronicsforhighsystemsafetyduringmonitoringfunctions

-wirebreakagemonitoring

-Adjustableswitchingdelayonalloutputsforavoidingfalsesignals

-1alarmoutput(SPDT)forthereactionincaseoflowwaterand/oroverfilling

-1erroroutput(SPDT)forthedisplayof(electronic)systemerrors

-7userspecificandprogrammableoutputs(SPDT)enable:

*individualswitchpointse.g.hornwhenexceedingorfallingbelowafilllevel

  *doubleswitchpointse.g.forapumpcontrol

 Inthecaseofidenticalprogrammingoftwooutputsa“DPDToutput”ispossible.

-14mA..20mAoutputforloadsupto500Ω,notgalv.isolated

-Remoteindicator(DU,optional)with4mA..20mAoutputforloadsupto500Ω,notgalv.isolated,

 asmanyasdesired



4.8Displayunit(DU)

Therearetwoversionsofthe(optional)displayunitDU:

 -systemswithupto16probeshaveasingle-rowLED-display

 -systemswith17upto32probeshaveadouble-rowLED-display

ForeachprobeaLEDindicatesthestateoftheprobe:

 -green:probesubmergedinwater

 -red:probeinsteam

 -surplusLEDs(e.g.13,14,15,and16ifthesystemhas12probes)arenotactivatedandremain

 dark

Theconditionofthesystemisindicatedvia3status-LEDs(identicaltotheLEDsoftheCU/seeChap.

4.2).

Ifadiscrepancyinthemeasurmentisdetected(waterabovesteam),theprobethatindicateswater

flashesgreen(seeChap.4.2).

IfaprobefailureisdetectedthecorrespondingLEDflashesred(seeChap.4.2).



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