manualdocumentatii-tehnice.ro/webcontent/uploads/documentatii/... · 2013. 3. 26. · manual...
TRANSCRIPT
R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
Controller for control of industrial evaporator- EKC 315A
Manual
Refrigeration and Air Conditioning Controls
ADAP-KOOL®
Refrigeration control systems
2 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
Introduction
ApplicationThe controller and valve can be used where there arerequirements to accurate control fo superheat and tempera-ture in connection with refrigeration.E.g.:• Cold store (air coolers)• Processing plant (water chillers)• A/C plant
Advantages• The evaporator is charged optimally – even when there are
great variations of load and suction pressure• Energy savings – the adaptive regulation of the refrigerant
injection ensures optimum utilisation of the evaporator andhence a high suction pressure
• Exact temperature control – the combination of adaptiveevaporator and temperature control ensures great tem-perature accuracy for the media
• The superheating is regulated to the lowest possible valueat the same time as the media temperature is controlled bythe thermostat function
Functions• Regulation of superheat• Temperature control• MOP function• ON/OFF input for start/stop of regulation• Input signal that can displace the superheat reference or
the temperature reference• Alarm if the set alarm limits are exceeded• Relay output for solenoid valve• PID regulation• Output signal following the temperature showing in the
display
SystemThe superheat in the evaporator is controlled by one pres-sure transmitter P and one temperature sensor S2.The valve can be one of the following types:• TQ (PHTQ, TEAQ)• AKV (AKVA)TQ is a modulating valve, and when this is used a solenoidvalve must also be used in the liquid line.AKV is a pulsating valve.Where the AKV valve is used it also functions as solenoidvalve.Temperature control is performed based on a signal fromtemperature sensor S3 which is placed in the air currentbefore the evaporator. Temperature control is in the shape ofan ON/OFF thermostat that shuts off the liquid flow in theliquid line, either via the solenoid valve in TQ applications ordirectly when AKV is used.
EKC 315A Manual RS.8C.S2.02 © Danfoss 12-2002 3
Operation
Superheat functionYou may choose between two kinds of superheat, either:• Adaptive superheat or• Load-defined superheat
MOPThe MOP function limits the valve’s opening degree as longas the evaporating pressure is higher than the set MOPvalue.
Override functionVia the analog input a displacement can be made of thetemperature reference or of the superheat reference. Thesignal can either be a 0-20 mA signal or a 4-20 mA signal.The reference can be dsplaced in positive or negativedirection.
External start/stop of regulationThe controller can be started and stopped externally via acontact function connected to input terminals 1 and 2.Regulation is stopped when the connection is interrupted.The function must be used when the compressor is stopped.The controller then closes the solenoid valve so that theevaporator is not charged with refrigerant.
RelaysThe relay for the solenoid valve will operate when refrigera-tion is required. The relay for the alarm function works insuch a way thatr the contact is cut in in alarm situations andwhen the controller is de-energised.
Modulating/pulsating expansion valveIn 1:1 systems (one evaporator, one compressor and onecondenser) with small refrigerant charge TQ is recom-mended.
In a system with an AKV valve the capacity can be distributedby up to three valves if slave modules are mounted. Thecontroller will displace the opening time of the AKV valves,so that they will not pulsate at the same time.Used as slave module is a controller of the type EKC 347.
Analog outputThe controller is provided with an analog current outputwhich can be set to either 0-20 mA or 4-20 mA. The signalwill either follow the superheat, opening degree of the valveor the air temperature.
PC operationThe controller can be provided with data communication sothat it can be connected to other products in the range ofADAP-KOOL® refrigeration controls. In this way operation,monitoring and data collection can be performed from onePC – either on the spot or in a service company.See also page 14.
4 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
Ref. Diff.
noitcnuF -araPretem
aivnoitarepoybretemaraPnoitacinummocatad
yalpsidlamroN
riaroeergedgninepos’evlavehttub(nwohssitaehrepusehtyllamroN.)71oeeS.detceleseboslayamerutarepmet
pmet3S/%DO/HS
ecnerefeR
tniopeSonsierehttahtdedivorpeulavtesehtnodesabdemrofrepsinoitalugeR
.)01o(noitubirtnoclanretxe.)tnioptesehttesotylsuoenatlumissnottubhtobhsuP(
- .tniopteSpmeT
laitnereffiDeht,laitnereffidtesehtsulpecnereferehtnahtrehgihsierutarepmetehtnehW
ehtnehwdetavitcaedemoceblliwtI.detavitcaeblliwyalers’evlavdionelos.ecnerefertesehtwolebsporderutarepmet
10r laitnereffiD
inU tniseulaverutarepmetehtetacidniotsirellortnocehtrehtehwtcelesuoyereH
oslalliwsgnitteserutarepmetrehto,detcelessiF°ninoitacidnifI.F°niroC°seulavatledsaroseulavetulosbasarehtie,tiehnerhaFotrevoegnahc
.thgirehtotdetcipedsitinuerusserpdnatinuerutarepmetfonoitanibmocehT
50r stinUrab+C°:0gisp+F°:1
si–rab+C°ylnoMKAni(.)gnittesehtrevetahw–deyalpsid
ecnereferehtotnoitubirtnoclanretxEtesehtotdeddaebotsinoitubirtnocaegralwohsenimretedgnittessihT
.01oeeS.)Am02(.xamsilangistupniehtnehwtnioptes
60r tesffOfeRtxE
2SmorflangisfonoitcerroC.)elbacrosnesgnolhguorhtytilibissopnoitasnepmoC(
90r 2StsujdA
3SmorflangisfonoitcerroC.)elbacrosnesgnolhguorhtytilibissopnoitasnepmoC(
01r 3StsujdA
noitaregirferfopots/tratSfopots/tratS.deppotsdnadetratsebnacnoitaregirfergnittessihthtiW
eeS.noitcnufhctiwslanretxeehthtiwdehsilpmoccaeboslanacnoitaregirfer.1xidneppaosla
21r hctiwSniaM
noitcnuftatsomrehtenifeDdetalugersitaehrepusehtylnO.noitcnuftatsomrehtoN:0.taehrepusfonoitalugersallewsanoitcnuftatsomrehT:1
41r edoM.mrehT
mralA
llamralanasierehtnehW.snoitautistnereffidnimralaevignacrellortnocehTehtdna,lenaptnorfrellortnocehtnohsalflliw)DEL(sedoidgnittime-thgileht
.nituclliwyalermrala
noitaivedreppurofmralA.nivleKnitessieulavehT.erehtessierutarepmet3ShgihootrofmralaehT
lautcaehtsdeecxeerutarepmet3SehtnehwevitcasemocebmralaehT.)82onineesebnacecnereferlautcaehT(.10Asulpecnerefer
10A mrlApmeT.hgH
noitaivedrewolrofmralAehT.nivleKnitessieulavehT.erehtessierutarepmet3SwolootrofmralaehT
lautcaehtwolebsporderutarepmet3Sehtnehwevitcasemocebmrala.20Asunimecnerefer
20A mrlApmeT.woL
yaledmralAehT.ecnemmoclliwnoitcnufremita,dedeecxesiseulavtimilowtehtfoenofI
emitehT.dessapneebsahyaledemittesehtlitnuevitcaemocebtonlliwmrala.setunimnitessiyaled
30A leDmrlApmeT
ehtnoitacinummocatadhtiWsmralalaudividniehtfoecnatropmi
deirracsignitteS.denifedebnac”snoitanitsedmralA“ehtnituo
41egaposlaeeS.unem
Survey of functions
EKC 315A Manual RS.8C.S2.02 © Danfoss 12-2002 5
sretemaraplortnoC
pKrotcafnoitacifilpmA:P.rewolssemocebnoitalugerehtdecudersieulavpKehtfI
40n rotcafpK
nTemitnoitargetnI:IewolssemocebnoitalugerehtdesaercnisieulavnTehtfI
50n .cesnT
dTemitnoitaitnereffiD:D).)0(.nimoteulavehtgnittesybdellecnacebnacgnittes-DehT
60n .cesdT
ecnerefertaehrepusehtrofeulav.xaM 90n HSxaM
ecnerefertaehrepusehtrofeulav.niMnahtrewolebtondluohsgnittesehtwolfdiuqilfoksirehtoteuD!gninraW
.K4-2.xorppa
01n HSniM
POM.ffO.soptceles,deriuqersinoitcnufPOMonfI
11n )raB(POM)ffOotsdnopserroc02foeulavA(
sdnocesnidoirepemits'evlavVKAnoitcusehtdnatnalpdesilartnecedasitifieulavrewolaottesebylnodluohS
.evlavVKAehtfogninepoehthtiwenilnidnatolasetautculferusserp
31n emit.repVKA
taehrepusfonoitalugerrofrotcafytilibatSehtfonoitautculfretaergawollalliwnoitcnuflortnocehteulavrehgihahtiW
degnahcebylnodluohseulavehT.degnahcsiecnereferehterofebtaehrepus.ffatsdeniartyllaicepsyb
81n ytilibatS
eulavecnereferraennoitacifilpmafognipmaDehtdnuoratsujylnotub,pKnoitacifilpmalamronehtspmadgnittessihT
.flahybeulavPKehtecuderlliw5.0fognittesA.eulavecnerefer.ffatsdeniartyllaicepsybdegnahcebylnodluohseulavehT
91n niMpK
)tnalp1:1niylnodnaylnoVKA(taehrepusehtrofrotcafnoitacifilpmAegnahcehtfonoitcnufasaeergedgninepos’evlavehtsenimretedgnittessihTanitluserlliwerusserpgnitaropaveehtfoesaercninA.erusserpgnitaropaveni
erusserp-wolehtnotuo-pordasierehtnehW.eergedgninepodecudergnildnepsierehtfI.tibadesiarebtsumeulavehtpu-tratsgnirudtatsomreht
.elttiladecuderebtsumeulavehtpu-tratsgnirud.ffatsdeniartyllaicepsybdegnahcebylnodluohseulavehT
02n 0TpK
)6xidneppa.feR(noitalugertaehrepusfonoitinifeD.noitalugerevitpadA.)SSM(taehrepuselbissimreptsewoL:1
enilehtnodesabdehsilbatsesiecnereferehT.taehrepusdenifed-daoL:2.22ndna01n,90n:stniopeerhtehtybdemrof
12n edomHS
%01rednusdaolrofecnerefertaehrepus.nimfoeulaV.)”01n”nahtrellamsebtsumeulavehT(
22n esolCHS
)ylnoQT(desolcevlavnehwerutarepmetybdnatSehtsA.tniopgnisolcstisehcaerevlavehtnehwmrawtpeksirotautcaQTehT
dnasecnarelototeudyletaruccayletelpmocdenifedebtonnactniopgnisolc”woh(deriuqersa,degnahcebnacgnitteseht,snoitairaverusserp
.5dna1secidneppaoslaeeS.)esolcotsievlavehtyleruces/”ylthgit
62n nimKQT
)ylnoQT(nepoevlavnehwerutaremetybdnatSnepoyllufstisehcaerevlavehtnehwwoltpeksierutarepmets’rotautcaQTehT
ehtevobaebotsierutarepmetehtseergedynamwohtesuoyereH.noitisop,eulavehtretaergehT.noitisopnepoyletelpmocnierutarepmetnepodetcepxenehwylwolseromtcaeroslalliwtitub,nepoeblliwevlavehttahtsitireruseht
.niagaesolcotsahti
72n xamKQT
)ylnoVKA(eergedgninepo.xaM.%nitessieulavehT.detimilebnaceergedgninepos’evlavehT
23n xaMDOA/VKA
6 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
suoenallecsiM
sserddAnaevahtsumti,noitacinummocatadhtiwkrowtenaotnitliubsirellortnocehtfI
ehtdna,sserdda wonknehttsumnoitacinummocatadehtfoyawetagretsam.sserddasiht
neebsaheludomnoitacinummocatadanehwedamebylnonacsgnittesesehTelbacnoitacinummocatadehtfonoitallatsniehtdnarellortnocehtnidetnuom
.detelpmocneebsah”C.A8.CR“tnemucodetarapesanidenoitnemsinoitallatsnisihT
atadafonoitallatsnigniwolloFeht,eludomnoitacinummoc
rapanodetarepoebnacrellortnoc-PADAnisrellortnocrehtoehthtiw
LOOK ® .slortnocnoitaregirfer
06dna1neewtebtessisserddaehT 30o -
NO.sopnitessiunemehtnehwyawetagehtottnessisserddaehT( ).sdnoceswefaretfaffOotkcabegnahcyllacitamotualliwgnittesehT
40o -
langistuptuodnaevlaVdettimsnartebotlangistnerrucehtdnaetalugerotsitahtevlavehterehenifeD.1=71ofitaehrepusehtwohslliwlangistnerrucehT.”OA”tuptuogolanaehtot
3=71ofierutarepmet3SehtrO.2=71Ofi,evlavehtfoeergedgnineporOffO:0
Am02-0dnaevlavQT:1Am02-4dnaevlavQT:2
Am02-0dnaevlavVKA:3Am02-4dnaevlavVKA:4
.3xidneppaeeS.rellortnocrehtonaroflangisdnaevlavVKA:5
90o epytOA
tnemecalpsidecnereferroflangistupnI.egnarlangisdnanoitcnuffonoitinifeD
langisoN:0Am02-0htiwecnerefererutarepmetfotnemecalpsiD:1Am02-4htiwecnerefererutarepmetfotnemecalpsiD:2
Am02-0htiwecnerefertaehrepusfotnemecalpsiD:3Am02-4htiwecnerefertaehrepusfotnemecalpsiD:4
ehtybecnereferehtecalpsidlliwAm02.tnemecalpsidaevigtonlliwAm0ro4()60runemniteseulav
01o epytAIA
ycneuqerF.ycneuqerftenehtteS
21o zH06/05)1=06,0=05(
yalpsidgniwohsroflangistceleS.yalpsidlamronehtninwohsebotlangisehttcelesnacuoyereH
.90OeeS.tuptuogolanaehtotdettimsnartoslasilangisehTtaehrepuS:1
eergedgninepos’evlaV:2erutarepmetriA:3
ehteesnacuoy,hsupfeirbanottubrewolehtevignoitarepogniruduoyfI(,ecnerefertaehrepusehT.detcelesneebsah1fi,erutarepmet3SehT:gniwollof
.)detcelesneebsah3fiecnerefererutarepmeT.detcelesneebsah2fi
71o edomyalpsiD
stuptuofolortnoclaunaMebnactuptuoA/VKAehtdnastuptuoyalerlaudividniehtsesoprupecivresroF
.deppotsneebsahnoitalugernehwylnorevewoH.NOnoitisopotnidecrofedirrevooN:FFO
.NOsievlavdionelosehtotyaleR:1.NOsituptuoA/VKA:2
dna92slanimretneewtebdehsilbatsenoitcennoc(detavitcasiyalermralA:3.)13
81o -
rettimsnarterusserprofegnargnikroWegnargnikrownevigahtiwrettimsnarterusserpanoitacilppaehtnognidnepeDehT.rellortnocehtnitesebtsum)rab21ot1-,yas(egnargnikrowsihT.desusi
.tessieulav.nim
02o .serPsnarTniM
tessieulav.xamehT 12o .serPsnarTxaM
)90onoitcnufehtrofgnitteS(tuptuoehterehwevlavehtfoeergedgnineporoeulaverutarepmetehtteS
muminimebtsumlangis)Am4ro0(
72o eulav.nimOA
)90onoitcnufehtrofgnitteS(tuptuoehterehwevlavehtfoeergedgnineporoeulaverutarepmetehtteS
K05foegnarerutarepmetahtiW(.)Am02(mumixamebtsumlangisrettebeblliwnoitulossideht)82odna72onisgnittesehtneewteblaitnereffid(
).K2.0nahtrettebebliwnoitulossidehtK001htiW.K1.0naht
82o eulav.xamOA
EKC 315A Manual RS.8C.S2.02 © Danfoss 12-2002 7
gnittestnaregirfeRnacuoY.denifedebtsumtnaregirfereht,detratsebnacnoitaregirfererofeB
:stnaregirfergniwollofehttceles.005R=9.32R=8.1b31R=7.31R=6.717R=5.205R=4.a431R=3.22R=2.21R=1
.A104R=61.722R=51.23R=41.denifedresU=31.b241R=21.411R=11.305R=01.A014R=32.B704R=22.A704R=12.C704R=02.A404R=91.A204R=81.705R=71
.0721R=92.447R=82.a006R=72.006R=62.092R=52.071R=42ehtotegamadesuacyamtnaregirferfonoitcelesgnorW:gninraW(
.)rosserpmoc .
03o tnaregirfeR
ecivreS
noitautisecivresaniesurofdetnirpebnacseulavrellortnocforebmunA
)QT(erutarepmetrotautcas’evlavdaeR 40u .pmetrotautcA
)QT(rerutarepmetrotautcas’evlavrofecnereferdaeR 50u .feRrotautcA
)AIA(langistnerruclanretxefoeulavdaeR 60u AmAIA
langistnerrucdettimsnartfoeulavdaeR 80u AmOA
)tupnipots/trats(IDtupnifosutatsdaeR 01u ID
tsalehtfonoitarudehtrotatsomrehtehtrofemitnitucgniognoehtdaeRnitucdetelpmoc
81u emiTnuR.rehT
rosnes2SehttaerutarepmetehtdaeR 02u .pmet2S
taehrepusdaeR 12u HS
ecnerefertaehrepuslautcas’lortnocehtdaeR 22u .ferHS
eergedgninepos’evlavehtdaeR 42u %DO
erusserpgnitaropavedaeR 52u eP.serp.pavE
erutarepmetgnitaropavedaeR 62u eTpmet.pavE
rosnes3SehttaerutarepmetehtdaeR 72u .pmet3S
ecnereferlortnocdaeR)langislanretxemorfnoitubirtnocyna+tnioptesteS(
82u fer.pmeT
)BIA(rettimsnarterusserpmorflangistnerrucfoeulavdaeR 92u AmBIA
-- mralA1ODyalermralafosutatsdaeR
-- vlaV.qiL2ODdionelosrofyalerfosutatsdaeR
evlav
sutatsgnitarepO
fonoitavitca)s1(feirbaybhtrofdellacebnacsutatsgnitarepos’rellortnocehTevahsedocsutatS(.nwohseblliwtistsixeedocsutatsafI.nottubreppueht
fineesebtonnacsedocsutatstahtsnaemsihT.sedocmralanahtytiroirprewol.edocmralaevitcanasiereht
:sgninaemgniwollofehtevahsedocsutatslaudividniehT
etatSCKE)noitaluger=0(
.pots/tratslanretxerolanretniehtybdeppotsnoitaregirfeR:01S 01
tuotucsitatsomrehT:11S 11
8 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
Light-emitting diodes (LED) on front panelThere are LED’s on the front panel which will light up whenthe belonging relay is activated.The upper LED will indicate the valve’s opening degree. Ashort pulse indicates a small liquid flow and a long pulse aheavy liquid flow. The other LED will indicate when thecontroller calls for refrigeration.The three lowermost LED’s will flash, if there is an error in theregulation.In this situation you can upload the error code on the displayand cancel the alarm by giving the uppermost button a briefpush.
DisplayThe values will be shown with three digits, and with a settingyou can determine whether the temperature are to be shownin °C or in °F.
Operation Menu survey
The buttonsWhen you want to change a setting, the two buttons will giveyou a higher or lower value depending on the button you arepushing. But before you change the value, you must haveaccess to the menu. You obtain this by pushing the upperbutton for a couple of seconds - you will then enter thecolumn with parameter codes. Find the parameter code youwant to change and push the two buttons simultaneously.When you have changed the value, save the new value byonce more pushing the two buttons simultaneously.
Gives access to the menu (or cutout an alarm)
Gives access to changes
Saves a change
Examples of operations
Set set-point1. Push the two buttons simultaneously2. Push one of the buttons and select the new value3. Push both buttons again to conclude the setting
Set one of the other menus1. Push the upper button until a parameter is shown2. Push one of the buttons and find the parameter you want
to change3. Push both buttons simultaneously until the parameter
value is shown4. Push one of the buttons and select the new value5. Push both buttons again to conclude the setting
SW =1.2x
noitcnuF -araPretem
.niM .xaM
yalpsidlamroN
/eergedgninepos'evlav/taehrepuslautcaehtswohSerutarepmet
71OniweivenifeD- K
lautcas’evlavnoisnapxeehteesothsiwuoyfIhsupfeirbanottubrewolehtevig,eergedgninepo
71OniweivenifeD.)s1(- %
ecnerefeR
tnioptesederiuqerehtteS - C°06- C°05
laitnereffiD 10r K1,0 K0,01
)gisp+F°=1/rab+C°=0(stinU 50r 0 1
ecnereferehtotnoitubirtnoclanretxE 60r K05- K05
2SmorflangisfonoitcerroC 90r K0,1- K0,1
3SmorflangisfonoitcerroC 01r K0,01- K0,01
noitaregirferfopots/tratS 21r FFO nO
noitcnuftatsomrehtenifeD)tatsomrehtffo/nO=1,noitcnuftatsomrehton=0(
41r 0 1
mralA
)gnitteserutarepmetehtevoba(noitaivedreppU 10A K0 K05
)gnitteserutarepmetehtwoleb(noitaivedrewoL 20A K0 K05
yaledemits’mralA 30A .nim0 .nim09
sretemarapgnitalugeR
pKrotcafnoitacifilpmA:P 40n 5.0 02
TemitnoitargetnI:I 50n s03 s006
)ffo=0(dTemitnoitaitnereffiD:D 60n s0 s09
ecnerefertaehrepusfoeulav.xaM 90n K2 K51
ecnerefertaehrepusfoeulav.niM 01n K1 K21
POM 11n rab0.0 rab06
)desusievlavA/VKAnehwylno(emitdoireP 31n s3 s01
.lortnoctaehrepusrofrotcafytilibatSffatsdeniartybedamebylnodluohssegnahC
81n 0 01
eulavecnereferdnuoranoitacifilpmafognipmaDffatsdeniartybedamebylnodluohssegnahC
91n 2.0 0.1
taehrepusrofrotcafnoitacifilpmAffatsdeniartybedamebylnodluohssegnahC
02n 0.0 0.01
lortnoctaehrepusfonoitinifeDPADAOL=2,SSM=1
12n 1 2
rednusdaolrofecnerefertaehrepus.nimfoeulaV%01
22n 1 51
evlavQT(desolcevlavnehwerutarepmetybdnatS)ylno
ffatsdeniartybedamebylnodluohssegnahC62n K51- K02
evlavQT(nepoevlavnehwerutarepmetybdnatS)ylno
ffatsdeniartybedamebylnodluohssegnahC72n K5 K05
eergedgninepo.xaMffatsdeniartybedamebylnodluohssegnahC
23n 0 001
suoenallecsiM
sserddas’rellortnoC *30o 1 06
)egassemnip-ecivres(hctiwsFFO/NO *40o - -
:langistuptuodnaevlavenifeDffO:0
Am02-0:OA.QT:1Am02-4:OA.QT:2
m02-0:OA,VKA:3Am02-4:OA,VKA:4
EVALS-743CKE:OA,VKA:5
90o 0 5
EKC 315A Manual RS.8C.S2.02 © Danfoss 12-2002 9
:AIAtupniegolanaehtnolangistupnienifeD,langison:0
Am02-0.tniopteserutarepmeT:1Am02-4.tniopteserutarepmeT:2
Am02-0.ecnerefertaehrepusfotnemecalpsiD:3Am02-4.ecnerefertaehrepusfotnemecalpsiD:4
01o 0 4
ycneuqerfegatlovylppusteS 21o zH05 zH06
”erutciplamron”rofyalpsidtceleStaehrepuS:1
eergedgninepos’evlaV:2erutarepmetriA:3
71o 1 3
:stuptuofolortnoclaunaMlortnoclaunamon:FFO
NOtceles:evlavdionelosrofyaleR:1NOtceles:tuptuoA/VKA:2
)tuotuc(detavitcayalermralA:3
81o ffo 3
eulav.nim–rettimsnarterusserprofegnargnikroW 02o rab1- rab06
eulav.xam–rettimsnarterusserprofegnargnikroW 12o rab1- rab06
)90onoitcnufehtrofgnitteS(erehweergedgnineporoeulaverutarepmetehtteS
)Am4ro0(muminimebtsumlangistuptuoeht72o C°07- C°061
)90onoitcnufehtrofgnitteS(erehweergedgnineporoeulaverutarepmetehtteS
)Am02(mumixamebtsumlangistuptuoeht82o C°07- C°061
gnittestnaregirfeR.717R=5.205R=4.a431R=3.22R=2.21R=1
.305R=01.005R=9.32R=8.1b31R=7.31R=6.23R=41.denifedresU=31.b241R=21.411R=11
.A204R=81.705R=71.A104R=61.722R=51.B704R=22.A704R=12.C704R=02.A404R=91
.006R=62.092R=52.071R=42.A014R=32.0721R=92.447R=82.a006R=72
03o 0 92
ecivreS
erutarepmetrotautcas'evlavQT 40u C°
erutarepmetrotautcas'evlavehtfoecnerefeR 50u C°
)91-81(AIAtupnigolanA 60u Am
)5-2(OAtuptuogolanA 80u Am
IDtupnifosutatsdaeR 01u ffo/no
emitni-tuctatsomrehT 81u .nim
rosnes2StaerutarepmeT 02u C°
taehrepuS 12u K
ecnerefertaehrepuS 22u K
eergedgninepos’evlavVKAdaeR 42u %
erusserpgnitaropavedaeR 52u rab
erutarepmetgnitaropavedaeR 62u C°
rosnes3StaerutarepmeT 72u C°
ecnerefererutarepmeT 82u C°
tupnirettimsnarterusserptalangisdaeR 92u Am
neebsaheludomnoitacinummocatadafielbissopebylnolliwgnittessihT)*.rellortnocehtnidellatsni
Factory settingIf you need to return to the factory-set values, it can be done in this way:- Cut out the supply voltage to the controller- Keep both buttons depressed at the same time as you reconnect the supply
voltage
:segassemgniwollofehtevignacrellortnocehT
1E
gassemrorrE e
rellortnocnitluaF
11Estiedistuoerutarepmetrotautcas’evlaV
egnar
51E rosnes2Stuo-tuC
61E rosnes2SdetiucrictrohS
71E rosnes3Stuo-tuC
81E rosnes3SdetiucrictrohS
91Esi91-81slanimretnolangistupniehT
.egnarehtedistuo
02Esi51-41slanimretnolangistupniehT
)langis0P(egnarehtedistuo
1A
egassemmralA
mralaerutarepmet-hgiH
2A mralaerutarepmet-woL
11A detcelesneebsahtnaregirferoN
10 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
Data
Ordering
Data communication
egatlovylppuSAV08,zH06/05%51-/+.c.aV42
morfdetarapesyllacinavlagsiegatlovylppuseht()slangistuptuodnatupnieht
rewoPnoitpmusnoc
rellortnoCrotautcaQT
liocVKA
AV5AV57AV55
langistupnI
langistnerruC Am02-0roAm02-4
erusserPrettimsnart
33SKAmorfAm02-4
noitcnuftcatnoclanretxemorftupnilatigiD
tupnirosneS mho0001tP.scp2
langistuptuOlangistnerruC Am02-0roAm02-4
daoL mho002.xaM
tuptuoyaleR TSPS.scp1 )cimho(A4:1-CA)evitcudni(A3:51-CAyalermralA TSPS.scp1
rotautcAtupnI
morflangiserutarepmeTrotautcaQTehtnirosnes
tuptuOot.c.aV42gnitasluP
rotautca
ataDnoitacinummoc
noitacinummocatadatcennocotelbissoPeludom
tneibmAerutarepmet
noitarepogniruDtropsnartgniruD
C°55-01-C°07-04-
erusolcnE 02PI
thgieW g003
gnitnuoM liarNID
yalpsiD stigid3,DEL
slanimreT mm5.2.xam 2 erocitlum
slavorppA
ersdnamedCMEdnaevitceriDegatloVwoLUE.htiwdeilpmocgnikram-EC
9-2-03706NEdna1-03706NEot.ccadetset-DVL2-28005NEdna1-18005NEot.ccadetset-CME
epyT noitcnuF .onedoC
A513CKE rellortnoctaehrepuS 6807B480
371AKEeludomnoitacinummocataD
)eludom01TTF(,)seirossecca(2907B480
571AKEeludomnoitacinummocataD
)ludom584SR(,)seirossecca(3907B480
471AKEeludomnoitacinummocataD
)eludom584SR(,)seirossecca(noitarapescinavlaghtiw
4217B480
Temperature sensor Pt 1000 ohm / Pressure transmitter type AKS33 / TQ Valves / AKV valves: ............. Kindly refer to catalogueRK.0Y.G...
Necessary connectionsTerminals:25-26 Supply voltage 24 V a.c.23-24 Supply to actuator17-18 Only at TQ actuator: Signal from actuator20-21 Pt 1000 sensor at evaporator outlet (S2)14-15 Pressure transmitter type AKS 339-10 Relay switch for start/stop of solenoid valve1-2 Switch function for start/stop of regulation. If a switch
is not connected, terminals 1 and 2 must beshortcircuited.
Application dependent connectionsTerminal:21-22 Pt 1000 sensor for measuring air temperature (S3)12-13 Alarm relay
There is connection between 12 and 13 in alarmsituations and when the controller is dead
18-19 Current signal from other regulation (Ext.Ref.)2-5 Current output for showing superheat or air tempera-
ture. Or for signal to a slave module3-4 Data communication
Mount only, if a data communication module hasbeen mounted.It is important that the installation of the data commu-nication cable be done correctly. Cf. separate litera-ture No. RC.8A.C...
Connections
Wire length TQ:See appendix 2
EKC 315A Manual RS.8C.S2.02 © Danfoss 12-2002 11
Installation considerationsAccidental damage, poor installation, or site conditions, cangive rise to malfunctions of the control system, and ultimatelylead to a plant breakdown.Every possible safeguard is incorporated into our products toprevent this. However, a wrong installation, for example,could still present problems. Electronic controls are nosubstitute for normal, good engineering practice.
Danfoss wil not be responsible for any goods, or plantcomponents, damaged as a result of the above defects. It isthe installer's responsibility to check the installation thor-oughly, and to fit the necessary safety devices.Particular attention is drawn to the need for a “force closing”signal to controllers in the event of compressor stoppage,and to the requirement for suction line accumulators.
Your local Danfoss agent will be pleased to assist withfurther advice, etc.
Appendix 1
Interaction between internal and external start/stop func-tions and active functions.
Appendix 2
Cable length for the TQ actuatorThe actuator must be supplied with 24 V a.c. ± 10%.To avoid excessive voltage loss in the cable to the actuator,use a thicker cable for large distances.
Wire cross section
Cable length
pots/tratSlanretnI ffO ffO nO nO
)ID(pots/tratSlanretxE ffO nO ffO nO
)2OD(noitaregirfeR ffO nO
rotautcaQTybdnatS
erutarepmetgnitalugeR
yalerevlavnoisnapxE ffO nO
gnirotinomerutarepmeT oN seY
gnirotinomrosneS seY seY
Appendix 3
If the flow of refrigerant is to be distributed to severalexpansion valves, this can be accomplished by using AKVvalves and EKC controllers as slave modules.
Remember to open the functions in:- EKC 315A's menu o09- EKC 347's menu o09
Appendix 4
If there are two evaporators sharing the same suction line,the signal from the pressure transmitter can be used by twocontrollers.
12 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
Appendix 5
Standby temperatures for TQ valves.
TQ valveThe valve’s actuator temperature is limited, both whenregulation is stopped and when the valve is right out at theopening point and closing point.(The opening and closing points may fluctuate a couple ofdegrees up or down, depending on pressures and toler-ances).
n26The setting is based on the TQ valve’s closing curve. With aplus value the valve can be kept slightly open. With a minusvalue the valve can be closed completely. If the minusvalue is high you can be sure that the valve will close, butthen it will also react slowly when it has to open again.
n27This setting defines the number of degrees the actuator hasto be warmer when the valve is completely open. If thevalue is high you can be sure that the valve is completelyopen, but then it will also react slowly when it has to closeagain.
Appendix 6
The two types of regulation for superheat are, as follows:
Adaptive superheat
Regulation is here based on the evaporator’s load bymeans of MSS search (MSS = lowest permissible super-heat).(The superheat reference is lowered to the exact pointwhere instability sets in).The superheat is limited by the settings for min.andmax.superheat.
Load-defined superheat
The reference follows a defined curve.This curve is definedby three values: the closing value, the min. value and themax. value. These three values must be selected in such away that the curve is situated between the MSS curve andthe curve for average temperature difference ∆Tm (tem-perature difference between media temperature andevaporating temperature.Setting example = 4, 6 and 10 K).
EKC 315A Manual RS.8C.S2.02 © Danfoss 12-2002 13
Start of controller
When the electric wires have been connected to the control-ler, the following points have to be attended to before theregulation starts:1. Switch off the external ON/OFF switch that starts and stops
the regulation.2. Follow the menu survey on page 8, and set the various
parameters to the required values.3. Switch on the external switch, and regulation will start.
If the superheating fluctuates
When the refrigerating system has been made to worksteadily, the controller’s factory-set control parameters shouldin most cases provide a stable and relatively fast regulatingsystem.If the system however fluctuates this may be due to the factthat too low superheat parameters have been selected:
If adaptive superheat has been selected:Adjust: n09, n10 and n18.
If load-defined superheat has been selected:Adjust: n09, n10 and n22.
Alternatively it may be due to the fact that the set regulationparameters are not optimal.
If the time of oscillation is longer than the integration time:(Tp > Tn , (Tn is, say, 240 seconds))1. Increase Tn to 1.2 times Tp
2. Wait until the system is in balance again3. If there is still oscillation, reduce Kp by, say, 20%4. Wait until the system is in balance5. If it continues to oscillate, repeat 3 and 4
If the time of oscillation is shorter than the integration time:(Tp < Tn , (Tn is, say, 240 seconds))1. Reduce Kp by, say, 20% of the scale reading2. Wait until the system is in balance3. If it continues to oscillate, repeat 1 and 2.
4. Follow the actual room temperature or superheat on thedisplay.(On terminals 2 and 5 a current signal can be transmittedwhich represents the display view. Connect a datacollection unit, if applicable, so that the temperatureperformance can be followed).
If the superheat has excessive underswingduring start-up
If you regulate with valve type AKV:Adjust n22 a little bit up and/or n04 a little bit down.
If you regulate with valve type TQ:Adjust n26 a littlle bit down
14 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
Data communication
Example
Example of menu display
If you want to know more about operation of controllers viaPC, you may order additional literature.
This page contains a description of a few of the possibilitiesyou will have when the controller is provided with datacommunication.
Each controller is pro-vided with a plug-inmodule.
The controllers are thenconnected to a two-corecable.
Up to 60 controllers maybe connected to onecable.
This cable is also connectedto a gateway type AKA 243.
This gateway will nowcontrol the communicationto and from the controllers.
It will collect temperaturevalues and it will receivealarms. When there is analarm the alarm relay will beactivated for two minutes.
The gateway can now beconnected to a modem.
When an alarm occurs fromone of the controllers, thegateway will - via themodem - make a phone callto the service company.
At the service company amodem, gateway and PCwith system software typeAKM have been installed.
All the controllers’ functionscan now be operated fromthe various menu displays.
The programme will forexample upload all thecollected temperaturevalues once a day.
• Measurements are shownat one side and settings atthe other.
• You will also be able to seethe parameter names ofthe functions on page 4-6.
• With a simple change-overthe values can also beshown in a trend diagram.
• If you wish to check earliertemperature measure-ments, you can see themin the log collection.
AlarmsIf the controller is extendedwith data communication, itwill be possible to define theimportance of the transmit-ted alarms.The importance is definedwith the setting: 1, 2, 3 or 0.When the alarm then arisesat some time, it will result inone of the following activi-ties:
1 = AlarmThe alarm message is sentoff with alarm status 1. Thismeans that the gateway thatis the master in the systemwill have its alarm relayoutput activated for twominutes. Later, when thealarm ceases, the alarm textwill be retransmitted, butnow with status value 0.
2 = MessageThe alarm text is transmittedwith status value 2. Later,when the “message” lapses,the alarm text isretransmitted, but now withstatus value 0.
3 = AlarmAs “1”, but the mastergateway’s relay output is notactivated.
0 = Suppressed informationThe alarm text is stopped atthe controller. It is transmittednowhere.
EKC 315A Manual RS.8C.S2.02 © Danfoss 12-2002 15
16 Manual RS.8C.S2.02 © Danfoss 12-2002 EKC 315A
RC
-ET
List of literature
Instructions RI.8G.T. (extract from this manual).Here you can see how controllers are mounted and programmed.
Installation guide for extended operation RC.8A.CHere you can see how a data communication connection to ADAP-KOOL® Refrigeration control systems can beestablished.
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to productsalready on order provided that such alternations can be made without subsequential changes being necessary in specifications already agreed.All trademarks in this material are property of the respecitve companies. Danfoss and Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.