MDT Technologies SCN-RT1UP.01 User manual

MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
1
09/2011
Technical Manual
MDT Room Temperature Controller

SCN-RT1UP.01
SCN-TS1UP.01
SCN-RT1UPE.01
SCN-RT1APE.01

TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
2
1Content
1Content.................................................................................................................................................2
2Overview...............................................................................................................................................4
2.1Overviewdevices...........................................................................................................................4
2.2Usage&Areasofuse.....................................................................................................................4
2.3Exemplarycircuitdiagram.............................................................................................................5
2.4Structure&Handling.....................................................................................................................5
2.5Functions.......................................................................................................................................6
2.5.1Overviewfunctions.................................................................................................................7
2.6SettingsattheETS‐Software.........................................................................................................8
2.7Startingup.....................................................................................................................................8
3Communicationobjects........................................................................................................................9
3.1Defaultsettingsofthecommunicationobjects............................................................................9
4ReferenceETS‐Parameter..................................................................................................................11
4.1GeneralSettings..........................................................................................................................11
4.1.1RoomTemperatureControllerwithsetwheel.....................................................................12
4.1.2RoomTemperatureControllerwithdisplay.........................................................................12
4.2Temperaturemeasurement........................................................................................................14
4.3Alarm/Messages..........................................................................................................................16
4.4Controllergeneral........................................................................................................................18
4.4.1Controllertype.....................................................................................................................18
4.4.2Operatingmodes&Setpoints..............................................................................................19
4.4.3Setpointoffset......................................................................................................................25
4.4.4Blockingobjects....................................................................................................................27
4.4.5Heating/Coolingrequestobjects..........................................................................................28
4.4.6Guiding.................................................................................................................................29
4.4.7Deadzone.............................................................................................................................31
4.5Controllersettings.......................................................................................................................33
4.5.1Controlvalue........................................................................................................................33
4.5.2PIcontrolcontinuous...........................................................................................................34
4.5.3PIcontrolswitching(PWM)..................................................................................................37
4.5.42‐stepcontrol(switching).....................................................................................................39
4.5.5Directionofcontroller...........................................................................................................41
4.5.6Additionallevel.....................................................................................................................41
4.5.7Additionalsettingsforheatingandcooling.........................................................................44


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
3

5Index...................................................................................................................................................48
5.1Abbildungsverzeichnis.................................................................................................................48
5.2Tabellenverzeichnis.....................................................................................................................49
6Attachment.........................................................................................................................................50
6.1Statutoryrequirements...............................................................................................................50
6.2Routinedisposal..........................................................................................................................50
6.3Assemblage..................................................................................................................................50
6.4Controller.....................................................................................................................................51
6.4.12‐Stepcontrol.......................................................................................................................51
6.4.2PI‐controlcontinous.............................................................................................................52
6.4.3PI‐controlswitching(PWM).................................................................................................53
6.5Directionofcontroller.................................................................................................................54



TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
4

2Overview

2.1Overviewdevices

Themanualreferstothefollowingdevices,whichareinourassortmentofroomtemperature
controller(OrderCoderespectivelyprintedinboldtype):
SCN‐RT1UP.01RoomtemperaturecontrollerUP
ointegratedtemperaturecontrollers:Two‐position,PI,PWM;flushmounted
SCN‐RT1APE.01RoomtemperaturecontrollerAPwithadjustmentknop
ointegratedtemperaturecontrollers:Two‐position,PI,PWM;surfacemounted;with
adjustmentknop
SCN‐RT1UPE.01RoomtemperaturecontrollerUPwithadjustmentknob
ointegratedtemperaturecontrollers:Two‐position,PI,PWM;flushmounted;with
adjustmentknop
SCN‐TS1UP.01Roomtemperaturesensor1‐fold
oSensorformeasuringtheroomtemperature,withoutcontrollerfunction


2.2Usage&Areasofuse

Theroomtemperaturecontrollerhasitsareasofuseatthecontrollinginhomeinstallationsandin
theobjectrange.
Alotofdifferentcontrolscanberealizedbytheroomtemperaturecontroller.Therearethree
integratedcontrollers,whichcanbeadjustedtothepresentsystem.Thethreecontrollerscan
controlaswellheatingsystemsascoolingsystems.Therearesettingoptionsforupto4different
operatingmodes.Additionallevels,blockingfunctions,settingsofexternalsensorsandguidingcan
alsobeadjusted.
AnexceptionistheSCN‐TS1UP.01.TheSCN‐TS1UP.01isonlyasensorformeasuringthetemperature.
Therearenointegratedtemperaturecontrollersatthisdevice.Thetemperaturesensorhasitsareas
ofuseatthemeasuringoftemperaturesforothercontrollers.


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
5

2.3Exemplarycircuitdiagram



Illustration1:Exemplarycircuitdiagram

2.4Structure&Handling

Theroomtemperaturecontrollerisavailableinthreedifferentdesigns.Therearedesignsforflush‐
mountingandsurface‐mounting.
Allofthedevicescontainofabus‐connection,aprogrammingbuttonandaprogrammingLEDatthe
back.
  
Illustration2:Temp.‐Controller  Illustration3:Temp.‐Controller  Illustration4:Temp.‐Controller
flush‐mounted    surface‐mounted   flush‐mounted
SCN‐RT1UP.01    SCN‐RT1APE.01   SCN‐RT1UPD.01


Theroomtemperaturesensor,SCN‐TS1UP.01,isforflush‐mounting.Itcontainsalsoofabus‐
connection,aprogrammingbuttonandaprogrammingLED.



TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
6

2.5Functions

Allroomtemperaturecontrollerscanmeasureatemperatureandsendacontrolvariable.The
controllerhas5differentsub‐menus.Ateverysubmenu,differentsettingscanbemade.Thesub
menusarestructuredinthisway:

Setupgeneral
Generalsettingscanbemadeatthismenuandtheuseddevicecanbechosen.
Temperaturemeasurement
Thesettingsforthemeasurementforthetemperaturecanbemadeatthismenu.Settings
forthemin/maxvaluesandthesensorconfigurationareavailableatthisparameter.
Allsensorscontainofanin‐plantbalance.
Alarm/Messages
Alarmsandmessagescanbeadjustedatthismenu.Thisalarmsandmessagesreportwhen
thetemperaturefallsbelowanadjustedvalueorexceedanadjustedvalue.
Controllergeneral
Atthismenu,thedesiredfunction(heating,coolingorheating&cooling)canbeassigned
andgeneralsettings,likesetpoints,canbeadjusted.
Controllersettings
Thismenuappearsassoonasthecontrollerhasgotafunctionassigned.Integrated
controllerscanbechosenatthismenuandthechosencontrollercanbeparameterized
further.



IfyouchoosetheSCN‐TS1UP.01asdeviceatthesetupgeneral,onlythemenussetupgeneral,
temperaturemeasurementandalarm/messageswillbeshown.



TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
7

2.5.1Overviewfunctions
SetupgeneralStartupdelaytimedelaytimeafterturnonofthebuspower
HardwareselectionAdjustmentoftheuseddevice
Temperature
measurement
Sendactualvaluecanbeswitchedon/off
reportconditionforchangeof
temperatureadjustablefrom0,1Kto2Kr
Sendactualvaluecycliccanbeswitchedon/off
timesofsendingadjustable
Min/maxvaluesreportcanbeswitchedon/off
canberesetmanualbycommunication
object
Sensorconfigurationadditionalconnectionofanexternal
sensorpossible
balanceinternal/externalsensor
adjustable
balanceworthforinternalsensor
adjustable
Alarm/MessagesAlarmscanbeswitchedon/off
Frost‐/Heatalarm
Messagescanbeswitchedon/off
ReportconditionoftheMin/Max
temperaturesparameterizeable
ControllergeneralControllertypeHeating
Cooling
Heating&Cooling
PriorityOrderoftheoperatingmodesadjustable
Basis‐SetpointReferencepointofthetemperaturecontrol
SetpointsReferencepointsforoperatingmodesand
controllermodesparameterizeable
ShiftofsetpointsMax.shiftparameterizeable
Scopeoftheshiftparameterizeable
canbesaved
Blockingobjectscanbeusedforheatingandcoolingseparately
Guidingcanbeswitchedon/off
Min/MaxValuesparameterizeable
impacttosetpointparameterizeable


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
8

ControllersettingsIntegratedcontroller2stepcontrol
oHysteresisparameterizeable
PI‐controlcontinuous
oMax.valueofcontrolvariable
oSettingofusedsystem
ofreeparameterizationofspecific
valuesavailable
PIcontrolswitching(PWM)
oMax.valueofcontrolvariable
oSettingofusedsystem
ofreeparameterizationofspecific
valuesavailable
oPWM‐cycletimeparameterizeable
Additionallevelsavailable
Switchoverheating/coolingautomatically
viaobject
Directionofcontrollernormal
inverted
Chart1:functionaloverview


2.6SettingsattheETS‐Software

Selectionattheproductdatabase:

Manufacturer:MDTTechnologies
Productfamily:ControlSystem
Producttype:Roomtemperaturecontroller
MediumType:TwistedPair(TP)
Productname:addictedtotheusedtype,e.g.:SCN‐RT1xPx.xx
Ordernumber:addictedtotheusedtype,e.g.:SCN‐RT1UP.01


2.7Startingup

Afterwiringtheallocationofthephysicaladdressandtheparameterizationofeverychannelfollow:
(1) Connecttheinterfacewiththebus,e.g.MDTUSBinterface
(2) setbuspowerup
(3) Presstheprogrammingbuttonatthedevice(redprogrammingLEDlights)
(4) LoadingofthephysicaladdressoutoftheETS‐Softwarebyusingtheinterface(redLEDgoes
out,aswellthisprocesswascompletedsuccessful)
(5) Loadingoftheapplication,withrequestedparameterization
(6) Switchthepowersupplyon
(7) Ifthedeviceisenabledyoucantesttherequestedfunctions(alsopossiblebyusingtheETS‐
Software)


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
9

3Communicationobjects

3.1Defaultsettingsofthecommunicationobjects

Thefollowingchartshowsthedefaultsettingsforthecommunicationobjects:
Defaultsettin
g
s
Nr.Channel/Input Function Length PriorityCR W T U
0Actualtemperature
value
Transmittemperature
value
2ByteLowXXX
1HighermessagevalueSendmessage 1Bit LowXX X
2LowermessagevalueSendmessage 1Bit LowXX X
3FrostalarmSendalarm 1Bit LowXX X
4HeatalarmSendalarm 1Bit LowXX X
5Externalsensor Readexternalsensor 2Byte LowXX
6SetpointcomfortSetsetpoint 2Byte LowXX X X
7Manualsetpointvalue
offset
Reduction/Increase2ByteLowX X
8ControlvalueheatingSendcontrolvalue 1Bit LowXX X
8ControlvalueheatingSendcontrolvalue 1Byte LowXX X
8Controlvalue
heating/cooling
Sendcontrolvalue1BitLowXXX
8Controlvalue
heating/cooling
Sendcontrolvalue1ByteLowXXX
9Controlvalue
additionalheating
Sendcontrolvalue1BitLowXXX
10 ControlvaluecoolingSendcontrolvalue 1Bit LowXX X
10 ControlvaluecoolingSendcontrolvalue 1Byte LowXX X
11Modecomfort Switchmode 1Bit LowXX X
12ModenightSwitchmode 1Bit LowXX X
13Modefrost/heat
protection
Switchmode1BitLowXX X 
14HeatingdisableobjectDisableheating 1Bit LowXX
15CoolingdisableobjectDisablecooling 1Bit LowXX
17Heatingrequest Sendrequest 1Bit LowXX X
18Coolingrequest Sendrequest 1Bit LowXX X
19Heating/Cooling
switchover
0=Heating
1=Cooling
1BitLowX X


TechnicalManualRoomTemperatureControllerSCN‐RT1
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

Chart2:Communicationobjects–defaultsettings

Youcanseethedefaultvaluesforthecommunicationobjectsfromtheupperchart.Accordingto
requirementsthepriorityoftheparticularcommunicationobjectsaswellastheflagscanbe
adjustedbytheuser.Theflagsallocatesthefunctionoftheobjectsintheprogrammingthereby
standsCforcommunication,RforRead,Wforwrite,TfortransmitandUforupdate.


*fromversion1.2

20GuidingvalueSetpointadjustment 2Byte LowXX X
21MaxmemoryvalueReadmemory 2Byte LowXX X X
22MinmemoryvalueReadmemory 2Byte LowXX X X
23Min/Maxmemory
reset
Resetmemory1BitLowX X X
24ResetsetpointvalueParameterreadin 1Bit LowXX
25DPT_HVACStatus*Sendcontrollerstatus 1Byte LowXX X
27LCDbacklightBacklighton 1Bit LowXX X
28ErrorexternalSensorErrormessage 1Bit LowXX X
29Actualsetpoint Sendsetpoint 2Byte LowXX X
30DPT_RHCC*Sendcontrollerstatus 2Byte LowXX X
31Modeselection Selectmode 1Byte LowXX X

TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
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
4ReferenceETS‐Parameter

4.1GeneralSettings

ThefollowingsettingsareavailableattheETS‐Software:

Illustration5:Generalsettings

Thechartshowsthedynamicrangeofthegeneralsettings:
ETS‐textDynamicrange
[defaultvalue]
comment
Startupdelaytime0‐60s
[0]
Timebetweenanuploadandthe
functionalstartofthedevice
SelecthardwareSCN‐RT1xP.xxwithoutmanualcontrol
SCN‐RTxPE.xxwithsetwheel
SCN‐RTxPD.xxwithdisplay
SCN‐TS1UP.01withoutcontrollerfunction
Adjustmentoftheuseddevice
Chart3:Generalsettings


Theparameterstartuptimeoutadjuststhetimebetweenanuploadandthefunctionalstartofthe
device.Theusedhardwarereactsonlyafterexpirationoftheadjustedtime.Allinputcommands
beforethestartuptimeoutexpire.
Additional,youhavetoselecttheusedhardwareatthismenu.
Thereareadditionalsettingsatthedeviceswithsetwheelanddisplay.Thesesettingsaredescribed
atthefollowingsegments.

TheSCN‐TS1UP.01isapuretemperaturesensor,whichdoesnotcontainofanycontrollerfunctions.
Whenthishardwareisselected,onlythemenus“Setupgeneral“(4.1),“Temperaturemeasurement”
(4.2)and“Alarm/Messages”(4.3)areshownandcanbeparameterized.


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
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
4.1.1RoomTemperatureControllerwithsetwheel

ThefollowingsettingsareavailableattheETS‐Software:

Illustration6:Additionalsettingscontrollerwithsetwheel

Aswellasthefunction„Setpointoffsetwithsetwheel“isactivated,thecommunicationobject
number7“manualsetpointvalueoffset”(havealookat4.4.3)disappears.

4.1.2RoomTemperatureControllerwithdisplay

ThefollowingsettingsareavailableattheETS‐Software:

Illustration7:Additionalsettingswithdisplay




TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
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
Thechartshowsthedynamicrangeoftheavailableparameters:
ETS‐textDynamicrange
[defaultvalue]
comment
Setpointoffsetwithrightkeysnotactive
active
activatesthesetpointoffsetviathe
rightkeys
Functionofleftkeysswitchedoff
present/absent
Ventilationlevel
assignsafunctiontotheleftkeys
LCDbacklightpermanentoff
permanenton
ext.objectON=1;OFF=0
ext.objectON=0;Off=1
AdjustmentfortheturnoffoftheLCD
backlight
Chart4:Additionalsettingswithdisplay

Thefunction“Setpointoffsetwithrightkeys“activatesthesetpointoffsetwiththerightkeys.Now,a
newabsolutesetpointcanbeassignedbytherightkeys.Themanualmovementofthesetpointis
stillpossiblebythecommunicationobject(havealookat4.4.3).
Therearetwopossiblefunctions,whichcanbeassignedtotheleftkeys.Ontheonehand,youcan
sendthestatewhetherapersonisintheroomornot.Bysendingthetelegram“absent”,the
temperaturecontrollerswitchesautomaticallyovertothestandbymode.Thetelegram“present”
causesaswitchovertothecomfortmode.Ontheotherhand,youcancontrolventilationbytheleft
keys.
Thebacklightcanbeswitchedpermanentonorpermanentoff.Furthermoreitcanbeswitchedbyan
externalcommunicationobject.Thepolarityofthecommunicationobjectcanbechosenbythe
settings.
ThechartshowstherelevantcommunicationobjectforswitchingtheLCDbacklightbyanexternal
communicationobject:
NumberNameLength Usage
27LCDbacklight1BitControllingoftheLCDbacklight
Chart5:CommunicationobjectLCDbacklightextern


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
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
4.2Temperaturemeasurement

ThefollowingsettingsareavailableattheETS‐Software:

Illustration8:Temperaturemeasurement

Thechartshowsthedynamicrangeoftheavailableparameters:
ETS‐textDynamicrange
[defaultvalue]
comment
Sendactualvalueafterchange
of
disable
0,1K‐2,0K
Sendingconditionfortheactual
temperaturevalue
Sendactualtemperature
cyclically
disable
1min–60min
Activationofthecyclicallysendingof
thetemperaturevalue
Sendmin/maxvaluedisable
Sendenable
Activationofthesendingofmin/max
values
Internalsensorcorrectionvalue
(value*0,1K)
‐50–50
[0]
Correctionoftheinternalsensor
Internal/externalsensor100%intern
90%intern/10%extern
80%intern/20%extern
…
100%extern
Adjustmentofthebalancebetween
internalandexternalsensor
Chart6:ParameterTemperaturemeasurement


Theeffectsofthesettingsaredescribedatthefollowingpage.


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
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
Sendactualvalueafterchangeof
Thisfunctionssetswhenthecurrenttemperaturevalueshallbesent.Bychoosingthesetting
“disable”,novaluewillbesentatall.

Sendactualtemperaturecyclically
Youcanactivatethisfunctionbychoosingatime.Now,theroomtemperaturecontroller
sendsthecurrenttemperatureperiodicallyaftertheadjustedtime.Thisfunctionis
independentfromthefunction“Sendactualvalueafterchangeof”.Sothetemperature
controllerwillsenditscurrentvaluealsoifthereisnochangeofit.

Internalsensorcorrectionvalue(value*0,1K)
Youcancorrectthemeasuredtemperaturevaluebythissetting.Bychoosinganegative
valueforthisparameter,themeasuredvaluewillbeloweredandbychoosingapositive
value,themeasuredvaluewillbelifted.Thevalueismultipliedby0,1K,sothecurrentvalue
canbeloweredorliftedupto5K.Thissettingisuseful,whenthesensorwasbuiltatan
unfavorablelocation,e.g.becomingdraftornexttoawindow.Whenthisfunctionis
activated,thetemperaturecontrollerwillalsosendthecorrectedvalues.
Allsensorsarematchedin‐plantto0,1K.

Thechartshowstherelevantcommunicationobjectforthetemperaturevalue:
NumberNameLength Usage
0Actualtemperaturevalue2Bytesendsthecurrenttemperaturevalue
Chart7:Communicationobjecttemperaturevalue

Sendmin/maxvalue
Thisfunctionactivatesthesendingandsavingofthemin/maxvalues.Whenthefunctionis
activatedby“Sendenable”,threecommunicationobjectswillbeshown.Twoobjectsforthe
MinandtheMaxvalueandonefortheresetofthemin/maxvalues.
Thechartshowstherelevantcommunicationobjectsforthisparameter:
NumberNameLength Usage
21Maxmemoryvalue2Bytesendsandsavesthemaximaltemperature
value
22Minmemoryvalue2Bytesendsandsavestheminimaltemperaturevalue
23Min/Maxmemoryreset1Bitresetsthemin/maxvalues
Chart8:CommunicationobjectsMin/Maxvalues

Internal/externalsensor
Thissettingsetsthebalancebetweenaninternalandanexternalsensor.Thesetting100%
interndeactivatesanyexternalsensor.Bychoosinganyothersetting,anexternalsensorwill
beactivated.So,alsocommunicationobjectsfortheexternalareshown.Abalanceof100%
externdeactivatestheinternalsensorandthetemperaturecontrollerwillonlynotevaluesof
theexternalsensor.
Thecommunicationobjectsforanactivatedexternalsensorareshownatthechart:
NumberNameLength Usage
5Externalsensor2Bytesendsthemeasuredtemperaturevalueofthe
externalsensor
28Errorexternalsensor1Bitsendsanerror,whentheexternalsensorsends
novalueformorethan30min
Chart9:Communicationobjectsexternalsensor


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
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
4.3Alarm/Messages

ThefollowingsettingsareavailableattheETS‐Software:

Illustration9:Alarm/Messages

Thechartshowsthedynamicrangeofthealarmandmessages:
ETS‐textDynamicrange
[defaultvalue]
comment
Alarmnotactive
active
Activationofthealarmfunction
Frostalarmifvalue<3°C‐10°C
[7°C]
Dynamicrangeofthefrostalarm
Adjustmentpossibleifalarmisactivated
Heatalarmifvalue>25°C‐40°C
[35°C]
Dynamicrangeoftheheatalarm
Adjustmentpossibleifalarmisactivated
Messagesnotactive
active
Activationofthemessagefunction
Messageifvalue>18°C‐40°C
[26°C]
Dynamicrangeoftheuppermessage
Adjustmentpossibleifmessagesare
activated
Messageifvalue<1°C‐25°C
[13°C]
Dynamicrangeofthelowermessage
Adjustmentpossibleifmessagesare
activated
Chart10:ParameterAlarm/Messages




TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
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
Alarm
Therearetwoparameterizeablealarms,whenthealarmfunctionwasactivated.The
frostalarmisforthenotificationofthelowertemperaturesandtheheatalarmforthe
notificationoftheuppertemperatures.Bothalarmshaveaseparatecommunicationobject
withthesizeof1Bit.
Thechartshowstherelevantcommunicationobjectsforthealarms:
NumberNameLength Usage
3Frostalarm1Bitsendfrostalarm
4Heatalarm1Bitsendheatalarm
Chart11:Communicationobjectsalarm

Messages
Themessagefunctionisalmostidenticaltothealarmfunction,butlessinitspriority.There
aretwomessagesavailable,whenthemessagefunctionwasactivated.Thesetwomessages
canbeparameterizedseparately.Thedynamicrangeofthemessagefunctionismuchbigger
thantheoneofthealarmfunction.Soitisalsopossible,torealizerunningturnover.Both
messageshaveanowncommunicationobjectofthesize1bit.Thesecommunicationobjects
areshowninthechartbelow:
NumberNameLength Usage
1Highermessagevalue1BitSendtheachievementofthehigherreporting
limit
2Belowmessagevalue1BitSendtheachievementofthelowerreporting
limit
Chart12:Communicationobjectsmessages





TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
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
4.4Controllergeneral

4.4.1Controllertype

ThefollowingsettingsareavailableattheETS‐Software:

Illustration10:Settingcontrollertype


Thechartshowsthedynamicrangeofthecontrollertype:
ETS‐textDynamicrange
[defaultvalue]
comment
ControllertypeControlleroff
Heating
Cooling
HeatingandCooling
Adjustmentofthecontrollertype
Thefurthersettingsdepenttotheadjusted
controllertype
Chart13:Settingcontrollertype

Thecontrollertypedefinesthefunctionoftheroomtemperaturecontroller.Targetofthecontrolis
tokeepanadjustedtemperatureconstant.Therearealotofsettings,whichcanhelptoachievethis
aim.Thesettingsdependtotheadjustedcontrollertype.
Bychoosingthesetting“controlleroff”,nofurthersettingsarepossible.


TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
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
4.4.2Operatingmodes&Setpoints

ThefollowingsettingsareavailableattheETS‐Software:

Illustration11:Operatingmodes&setpoints

Thechartshowsthedynamicrangeoftheoperatingmodesandsetpoints:
ETS‐textDynamicrange
[defaultvalue]
comment
Basiscomfortsetpoint18,0°C–25,0°C
[21,0°C]
Thebasiscomfortsetpointisthereference
pointofthecontrol.
NightreductionLoweringinK
0K–10,0K
[3,0K]
Loweringofthetemperaturebychoosing
theoperatingmodenight.
Relativetothebasiscomfortsetpoint.
StandbyreductionLoweringinK
0K–10,0K
[2,0K]
getsactivatedwhennootheroperating
modewaschosen
Theloweringisrelativetothebasis
comfortsetpoint.
Setpointfrostprotection3°C–12°C
[7°C]
Setpointoftheoperatingmodefrost
protection.
indicatedbyanabsolutevalue
Setpointheatprotection24°C–40°C
[35°C]
Setpointoftheoperatingmodeheat
protection.
indicatedbyanabsolutevalue
Chart14:Operatingmodes&setpoints



TechnicalManualRoomTemperatureControllerSCN‐RT1
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [email protected] • www.mdt.de
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
4.4.2.1OperatingmodeComfort
Theoperatingmodecomfortisthereferencemodeofthecontroller.Thetemperaturereductionat
theoperatingmodesnightandstandbyrefertothesetpointofthecomfortmode.Whenaroomis
used,theoperatingmodecomfortshouldbeactivated.Theconfiguredsetpoint,the“basiccomfort
setpoint,isvalidfortheheatingprocessifthecontrollerwassetasheating&cooling(describedat
4.4.7).
Thechartshowstherelevant1‐Bitcommunicationobject:
NumberNameLength Usage
11Modecomfort1BitActivationoftheoperatingmodecomfort
Chart15:Communicationobjectoperatingmodecomfort

4.4.2.2OperatingmodeNight
Theoperatingmodenightshallcauseasignificantdecrementofthetemperature,forexampleat
nightorattheweekend.Thereductioncanbeprogrammedfreelyandreferstothebasiccomfort
setpoint.Ifyouhaveprogrammedareductionof5Kandabasiccomfortsetpointof21°C,the
setpointforthenightmodewillbe16°C.
Thechartshowstherelevant1‐Bitcommunicationobject:
NumberNameLength Usage
12Modenight1BitActivationoftheoperatingmodenight
Chart16:Communicationobjectoperatingmodenight

4.4.2.3OperatingmodeStandby
Whennobodyisintheroom,theoperatingmodestandbyisused.Thisoperatingmodeshallcausea
lowreductionofthetemperature.Sotheroomcanbeheatedupfastagain.
Thevalueforthereductioncanbeprogrammedfreelyandreferstobasiccomfortsetpoint.Ifyou
haveadjustedareductionof2Kandabasiccomfortsetpointof21°C,thesetpointfortheoperating
modestandbywillbe19°C.
Thestandbymodecannotbeactivatedbyacertaincommunicationobject.Itgetsactivated,whenall
operatingmodesareswitchedoff.

4.4.2.4OperatingmodeFrost/Heatprotection
Theoperatingmodefrostprotectiongetsactivated,whenthecontrollertypewassetasheating.The
heatprotectiongetsactivated,whenthecontrollertypewassetascooling.Whenthecontrollertype
issettoheatingandcooling,thecombinedoperatingmodefrost‐/heatprotectionisactivated.
Thisoperatingmodecausesanautomaticallyswitchonofheatingorcooling,whenaparameterized
isexceededorthetemperaturefallsbelowaparameterizedtemperature.Atthisoperatingmode,
thetemperatureissetasabsolutevalue.Youshouldactivatethisfunctionifyouarelongerabsent
andthetemperaturemustnotfallbelowaspecificvalueorexceedaspecificvalue.
Thechartshowstherelevant1‐Bitcommunicationobjects:
NumberNameLength Usage
13Modefrostprotection1BitActivationoftheoperatingmodefrostprotection
13Modeheatprotection1BitActivationoftheoperatingmodeheatprotection
13Modefrost/heatprotection1BitActivationoftheoperatingmodefrost/heat
protection
Chart17:Communicationobjectoperatingmodefrost/heatprotection
