oventrop Aktor M ST L Modbus User manual

Valves, controls + systems
Operating instructions
EN Electromotive actuator
„Aktor M ST L Modbus“, 24 V, (DN 40/50)

„Aktor M ST L Modbus“ Contents
3
101274584-V01.11.2019
1. General information ................................................................................................................5
1.1 Validity of the operating instructions .........................................................................................5
1.2 Type plate ..................................................................................................................................5
1.3 Extent of supply ........................................................................................................................5
1.4 Contact......................................................................................................................................5
1.5 EU Declaration of conformity ....................................................................................................5
1.6 Used symbols............................................................................................................................5
2. Safety-related information......................................................................................................6
2.1 Correct use................................................................................................................................6
2.2 Warnings ...................................................................................................................................6
2.3 Safety notes ..............................................................................................................................6
2.3.1 Dangerincaseofinadequatepersonnelqualication............................................................................. 6
2.3.2 Risk of burns due to hot components and surfaces................................................................................ 6
2.3.3 Availability of the operating instructions ..................................................................................................6
3. Technical description ..............................................................................................................7
3.1 Construction..............................................................................................................................7
3.2 Functional description...............................................................................................................7
3.2.1 Basic functions......................................................................................................................................... 7
3.2.2 Calculation functions................................................................................................................................8
3.2.3 Limitation function.................................................................................................................................... 8
3.2.4 Control function .......................................................................................................................................8
3.2.5 System monitoring ................................................................................................................................... 8
3.3 Technical data ...........................................................................................................................9
4. Transport and storage...........................................................................................................10
5. Installation..............................................................................................................................10
5.1 Fitting of the actuator ..............................................................................................................10
5.2 Electrical connections .............................................................................................................11
5.3 CongurationoftheDIPswitches...........................................................................................11
5.3.1 Assignment ............................................................................................................................................12
5.3.2 Addressconguration ............................................................................................................................12
6. Operation ...............................................................................................................................12
6.1 Status LED ..............................................................................................................................12
6.2 ParametrizationofthebusfailuredetectionviaModbus........................................................12
6.3 Initialisationrun .......................................................................................................................13
6.3.1 By address change ................................................................................................................................13
Contents
Seite

Contents „Aktor M ST L Modbus“
4101274584-V01.11.2019
6.3.2 ViatheModbusparametrization ........................................................................................................... 13
6.4 Manualoperation ................................................................................................................... 13
6.4.1 Extending the drive stem ...................................................................................................................... 13
6.4.2 Retracting the drive stem...................................................................................................................... 14
7. Maintenance ......................................................................................................................... 14
8. Removal................................................................................................................................. 14
9. Disposal................................................................................................................................. 14
10. Appendix ............................................................................................................................... 15
10.1 Modbustopology ................................................................................................................... 15
10.2 Data point list ......................................................................................................................... 15

„Aktor M ST L Modbus“ General information
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101274584-V01.11.2019
1. General information
Theoriginaloperatinginstructionsweredraftedin
German.
Theoperatinginstructionsinotherlanguageswere
translated from German.
1.1 Validity of the operating
instructions
These operating instructions are valid for the electro-
motive actuator
“AktorMSTLModbus”,24V,forCoconQTRand
QFC.
1.2 Type plate
Thetypeplateislocatedbelowthecableconnec-
tions.
1.3 Extent of supply
• Electromotiveactuator“AktorMSTLModbus”,
24 V
• Operating instructions
1.4 Contact
Address
OVENTROPGmbH&Co.KG
Paul-Oventrop-Straße1
59939 Olsberg
GERMANY
Technical service
Phone:[phone]
1.5 EU Declaration of conformity
OventropGmbH&Co.KGherebydeclaresthatthis
product complieswiththebasicrequirementsand
other relevant provisions of the EC Directives con-
cerned.
The declaration of conformity can be obtained from
the manufacturer.
1.6 Used symbols
Highlightsimportantinformationandfurther
explanations.
fAction required
• List
1.
2.
Fixed order. Steps 1 to X.
ZResult of action

Safety-related information „Aktor M ST L Modbus“
6101274584-V01.11.2019
2. Safety-related information
2.1 Correct use
Safety in operation is only guaranteed if the product
is used correctly.
Theactuatormaybeusedinindoorheating,venti-
lation and air conditioning systems in combination
withthepressureindependentcontrolvalves“Cocon
QTR/QFC”DN40andDN50.
Anyotheruseoftheproductwillbeconsidered
incorrect use.
Claimsofanykindagainstthemanufacturerand/
orhisauthorisedrepresentatives,duetodamages
caused by incorrect use cannot be accepted.
The observance of the operating instructions is part
of the compliance terms.
2.2 Warnings
Eachwarningcontainsthefollowingelements:
Warning symbol SIGNAL WORD
Type and source of danger!
Possibleconsequencesifthedangeroccurs
orthewarningisignored.
fPossibilitiesofavoidingthedanger.
Thesignalwordsidentifytheseverityofthedanger
arising from a situation.
DANGER
Indicatesanimminentdangerwithhighrisk.
Thesituationwillleadtodeathorserious
injury if not avoided.
WARNING
Indicatesapossibledangerwithmoderate
risk. The situation may lead to death or seri-
ous injury if not avoided.
CAUTION
Indicatesapossibledangerwithlowerrisk.
The situation may lead to minor and revers-
ible injury if not avoided.
NOTICE
Indicatesasituationthatmayleadtodamage
to property if not avoided.
2.3 Safety notes
Wehavedevelopedthisproductinaccordancewith
current safety requirements.
Pleaseobservethefollowingnotesconcerningsafe
use.
2.3.1 Danger in case of inadequate personnel
qualication
Anyworkonthisproductmustonlybecarriedoutby
qualiedtradespeople.
As a result of their professional training and experi-
enceaswellastheirknowledgeoftherelevantlegal
regulations,qualiedtradespeopleareabletocarry
outanyworkonthedescribedproductprofessional-
ly.
User
Theuserhastobeinformedbythequaliedtrades-
people as to the operation.
2.3.2 Risk of burns due to hot components and
surfaces
fAllowtheproducttocooldownbeforeworkingonit.
fWear suitable protective clothing to avoid unprotect-
edcontactwithhotsystemcomponentsandttings.
2.3.3 Availability of the operating instructions
These operating instructions and all other valid doc-
uments have to be read and applied by any person
workingontheproduct.
The operating instructions have to be kept at the
installation location.
fHandtheseoperatinginstructionsandallothervalid
documents over to the user.

„Aktor M ST L Modbus“ Technical description
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3. Technical description
3.1 Construction
96
71
62
95
M30x1,5 DIN 13
Illust. 1: Side view
56
1
Illust. 2: Front view
(1) Pushbuttonforreleasingthelatchedvalve
stem
3.2 Functional description
Thefullrangeoffunctionswillonlybeavailable
afterparametrizationoftheModbus.
MiniactuatorModbusforsteadycontrolinheating,
ventilation and air conditioning systems.
ControliscarriedoutviaModbusRTUcommunica-
tion(RTU:RemoteTerminalUnit).
ApartfromthecommunicationontheModbus,two
universalinputs(binaryandanalogue)areavailable.
One of the inputs can be used as analogue output.
The inputs are suitable for internal functions and for
further processing of data in an automation station
(Modbusmaster).
3.2.1 Basic functions
Automatic recognition of neutral point
The neutral point is detected during the initialisation
run.Acyclicalreinitializationisperformedduring
operation.
Positioning
Theactuatorisoperatedwithsteadycontrol.The
controlsignal(0..100%)istransmittedviaModbus
communication.
Thecurrentposition(0..100%)canbequeriedvia
Modbus.
Valve anti-blocking function
The actuator features a valve anti-blocking function
whichcanbeactivated.Thecycletimecanbecon-
guredviatheModbusparametrization.
Ifthevalueiszero,thisfunctionisdeactivated.
Thevalveanti-blockingfunctionwillpreventsticking
of the stem if the valve is not activated over a longer
period.
Setting of valve characteristic lines
Differentvalvetypeswiththeircharacteristiclines
canbeselectedviatheModbusparametrization.A
minimumandamaximumvolumeowaredened
on the basis of these characteristic lines.
Conguration of the hydronic balancing values
Amaximumvolumeow(hydronicbalancing)forthe
heatingandcoolingmodecanbedenedviathe
Modbusparametrization.
Temperature detection
The temperatures of the supply and return pipe can
bedetectedviatwoconnectedtemperaturesensors
andcanbequeriedviaModbus.
Flushing function
Theactuatorfeaturesanautomaticushingfunction.
Duringushing,thevalveisbetemporarilyfullyopen.

Technical description „Aktor M ST L Modbus“
8101274584-V01.11.2019
ThecycletimecanbeconguredviatheModbus
parametrization.
Ifthevalueiszero,thisfunctionisdeactivated.
3.2.2 Calculation functions
Calculation of the volume ow
Incombinationwithapressureindependentcontrol
valve“CoconQTR/QFC”,thecurrentvolumeowis
calculated on the basis of the set valve characteristic
line and the current position of the actuator and can
bequeriedviaModbus.
Calculation of the thermal output
The current thermal output is calculated on the basis
ofthecalculatedvolumeowandthetemperature
differencebetweenthesupplyandreturnpipeand
canbequeriedviaModbus.
3.2.3 Limitation function
Return temperature limitation (register 315)
Return temperature limitation is carried out on the
basisofthelimitvalueconguredviaModbusand
the current measured return temperature. When ex-
ceededorundercut,thevolumeowwillbereduced
until the limit value is reached again.
Limitation of the thermal output (register 314)
Limitation of the thermal output is carried out on the
basisofthelimitvalueconguredviaModbusand
thecalculatedcurrentoutput.Whenexceeded,the
volumeowwillbereduceduntilthelimitvalueis
reached again.
3.2.4 Control function
Output control (registers 130, 200, 301, 310, 311, 410)
Controltoadenedoutputvaluecanbecarriedout
on the basis of the calculated current output.
Room temperature control (registers 131, 200, 300,
310, 311, 403)
Room temperature control is carried out on the basis
ofthenominaltemperatureconguredviaModbus
and the transmitted current room temperature.
Return temperature control (registers 130, 200, 302,
310, 311, 404, 405)
Return temperature control is carried out on the ba-
sisofthenominaltemperatureconguredviaMod-
bus and the current measured return temperature.
3.2.5 System monitoring
Leakage detection
A possible internal leakage is detected on the basis
ofthemeasuredowandreturntemperaturewiththe
valve closed.
A leakage is detected if the measured temperature
differenceexceeds8Kforatleast6hourswiththe
valve closed.
Operating and fault messages
All data registered by the actuator can be queried
viaModbus.Thestateofthehydraulicscanbe
assessed on the basis of these data and possible
errors and failures can be detected at an early stage.
Bus monitoring
Thebusfailuredetectioncanbeparametrizedvia
Modbus(seesection6.2 on page 12).

„Aktor M ST L Modbus“ Technical description
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3.3 Technical data
Technical data
Operating voltage 24VAC±10%,50/60Hz;
4.8VA;24VDC±10%;2.5
W
Power consumption Dimensioning:
- 9.0VA(24VAC)
- 4.7W(24VDC)
nominal:
- 4.8VA(24VAC)
- 2.5W(24VDC)
Start up load - 24VDC;5.0A;0.025A2s
- 24VAC;7.2A;0.052A2s
Interface RS485ModbusRTUslave;
max. 1000 m depending
on the baud rate
Drive DirectlyviaModbusviaau-
tomationstationorgateway
Inputs and outputs 2 universal in- or outputs
(P1,P2)independentlypara-
metrizableviaModbusas:
- binaryinput,voltfree
max.500Ohm;1mA;13
V DC
- analogueinput,seetable
"sensortypes",S.4
- analogue output 0..10 V
DConlyP2
Connection Twopre-assembledcables
1.5m;2x2x0.5mm2
shielded
and1.5m;4x0.5mm2
Display LED display for operating
voltage and status
Motor deactivation Drivestem:
extending = load-depend-
ent,
retracting = load-dependent
Travel noise <31dB(A)
Piston stroke max. 14 mm
Floating time 22s/mm
Operating power nominal 500 N
Position indicator Stroke scale
Valve anti-blocking
function
Optional activation
ParametrizationviaModbus
Permissible uid
temperature in the
valve
0 -120 °C
Ambient tempera-
ture
0 - 50 °C
Ambient humidity Inoperation:0-85%r.h.,
not condensing
Outofoperation:0-85r.h.,
not condensing
Overvoltage cate-
gory
Degree of protection
Pollution degree 2
Protection class IP54
NOTICE
Short circuit due to drip-
ping water
fDo not feed the cable in
from the top.
Protective system IIIaccordingtoEN60730
Installation position 360°
Maintenance maintenance-free
Weight 396 g
Bus communication
Interface EIA-485/RS-485
Type of transmission ModbusRTUslave
Supported baud
rates
9.600,19.200,38.400
(factorysetting),57.600,
115.200 bps
Start/stop bits 8N1,8N2(factorysetting)
Number of bus par-
ticipants
Upto32recommended,
max. 64
Bus load 1/8unitload
Termination Switchableintheappliance,
120 Ohm
Bias network To be set in the master
Recommended line Twistedpaircablewith
shield (characteristic imped-
ance
about120Ohm)
Bus topology with
115.200 baud
Recommended max. line
length 500 m
Bus topology with
38.400 / 57.600 baud
Recommended max. line
length 750 m
Bus topology with
9.600/19.200 baud
Recommended max. line
length 1000 m
Stub lines Max.linelength2m
Supported Modbus
function codes
Code Function
0x03 Read holding reg-
ister
0x06 Write holding reg-
ister
0x03 Read holding mul-
tiple
0x10 Write holding mul-
tiple

Transport and storage „Aktor M ST L Modbus“
10 101274584-V01.11.2019
Sensor types
0..10 V 0..100 %
KP10 -50..+150 °C
Ni1000 (DIN) -50..+150 °C
Ni1000 (L&G) -50..+150 °C
PT1000 -50..+150 °C
4. Transport and storage
Temperature range 0 °C - +50 °C
Relative air humidity max. 85%
Particles Store dry and free from dust
Mechanical inu-
ences
Protectedfrommechanical
agitation
Weather inuences Do not store outdoors
Protectfromdirectsunlight
Chemical inuences Donotstoretogetherwith
aggressiveuids
5. Installation
Ondelivery,theactuatorisinthemounting
position.
Inthemountingposition,thestemisfully
retractedandtheDIPswitches(Bit1bis6)are
set to "OFF" (see section 5.3.1 on page 12).
5.1 Fitting of the actuator
Makesurethatthereisenoughspaceforthe
installation of the actuator.
The actuator must only be connected to the
powersupplyafterinstallation!
CAUTION
Risk of burns due to hot components
Anunprotectedcontactwithhotcomponents
may lead to burns.
fBeforestartingwork,letthevalvecool
down.
fWear safety gloves.
1. Fit the adapter set to your valve according to the
enclosed installation instructions.
2. Fit the actuator to the connection thread of the
valve.
3. Handtightenthecollarnut.
Avoid cross threading.
NOTICE
Damage to the actuator when tightening
the collar nut with excessive torque
The actuator can be damaged and its
be function impaired if the collar nut is
over-tightened.
fHandtightenthecollarnut.

„Aktor M ST L Modbus“ Installation
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5.2 Electrical connections
8
1
9
10
2
3
4 7
12
11
Illust. 3: Electrical connections, DIP switches and
status LED
(1) Red
(RD)
24VAC/DC
(2) Black
(BK)
0VAC/DC
(3) Yellow
(YE)
D+ Data line
(4) Green
(GN)
D- Data line
(7) White
(WH)
P1 Universal input 1
(8) Violet
(VT)
GND Universal input 1 earth
(9) Grey
(GY)
P2 Universal input 2
(10) Pink
(PK)
GND Universal input 2 earth
(11) DIPswitchpanel
(12) Status LED
YE
0 V AC/DC
RD BK
24 V AC/DC
D+
D-
GN
M
1234
7
8910
GND
GND
P2
P1
VT
WH GY PK
Illust. 4: Connection diagram
NOTICE
Short circuit due to dripping water
fDo not feed the cable in from the top.
1. Remove the casing cover.
2. ConnectthedatalinesfortheModbusand,if
required,thelinesfortheuniversalinputsaccording
to the assignment in Illust.4onpage11 an.
3. Connectthelinesforthepowersupplyaccordingto
the assignment in Illust.4onpage11.
4. Connectthepowersupply.
ZTheLEDwillashgreenquickly.
5.3 Conguration of the DIP switches
Address00isalwaysoccupiedbytheModbus
master.
Theterminalresistance(120Ohm)betweenthe
twodatalines(D+andD-)isinactivated("OFF")
oractivated("ON")viaDIPswitch8.
fMakesurethatbothendsofthebusare
terminated by a terminal resistance.
1. Remove the casing cover.
2. ConguretheDIPswitchesaccordingtothedesired
Modbusaddress.

Operation „Aktor M ST L Modbus“
12 101274584-V01.11.2019
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Illust. 5: DIP switch panel
5.3.1 Assignment
Function Switch position
OFF ON
BIT0 0 1
BIT1 0 1
BIT2 0 1
BIT3 0 1
BIT4 0 1
BIT5 0 1
BIT6 Thebaudrateisresetto38.400,8,N,2by
switchingbackandforth
BIT7Terminal
resistance
Inactive Active
5.3.2 Address conguration
Address BIT
5
[32]
BIT
4
[16]
BIT
3
[8]
BIT
2
[4]
BIT
1
[2]
BIT
0
[1]
1 000001
2 000010
3 000011
4 000100
. ......
. ......
. . . . . . .
63 1 1 1 1 1 1
fSet the addresses of your actuators as desired.
(Modbustopologyseesection10.1 on page 15).
Each address must only be used once in a
Modbusnetwork.
ZTheactuatorwillautomaticallyperformaninitialisa-
tionrunaftersettingoftheModbusaddresses.
ZAfter completion of the initialisation run and com-
missioningoftheModbusinterface,theactuatorwill
followthecontrolsignals.
6. Operation
6.1 Status LED
The status LED is located under the casing cover
above the terminal on the right hand side and dis-
plays the operating status of the actuator.
ThestatusLEDisvisibleevenwhenthecover is
closed.
Status LED Meaning
Lit green Normal operation
Flashing
green quick-
ly
Mountingpositionswitchposition0
(switches1to6settoOFF)
Flashing
green
Initialisationrun
Flickering
green
Modbuscommunication
Flashing
yellow
Manualsetting(stemfullyextended)
Lit red Valve adaptation error (initialisation run
withoutvalve)
Off Operating voltage interrupted
6.2 Parametrization of the bus failure
detection via Modbus
Register
address
Name Bus com-
munication
Values
133 Bus failure
function
Congura-
tion
See register
address 133
in section
10.2 on
page 15.
134 Emergency
position
Congura-
tion
0..100%
Ifthevalue3hasbeenconguredintheregister
address133,thevalveemergencyposition(0-
100%)conguredintheregisteraddress134
willbeapproachedincaseofabusfailure(no
querybytheModbusMasterfor120s).
Once the bus communication has been re-
stored,thevalvewillagainbecontrolledauto-
matically according to the set operating mode.

„Aktor M ST L Modbus“ Operation
13
101274584-V01.11.2019
6.3 Initialisation run
6.3.1 By address change
Theactuatorwillperformaninitialisationrunifthe
Modbusaddressischanged(seesection5.3.2 on
page 12).
6.3.2 Via the Modbus parametrization
Register
address
Name R/W Values
138 Com-
mand
r/w 0:Normaloperation
1:Valveadaptation/initiali-
sation run
2:Testrun:manualush-
ingfunction(once),after
thatthevalvewillagain
be controlled according to
the set operating mode
3:Sync:manualushing
function(once),afterthat
thevalvewillagainbe
controlled according to
the set operating mode
4:Errorreset:Eachincom-
ingerrorwillgeneratean
error message in register
318. The error message
canberesetwiththehelp
of the
ErrorReset.Incaseof
permanenterrors,the
errormessagewillbegen-
erated again immediately.
5:Baudratechange.The
currently set parameters
of the register addresses
105...107 are applied.
6.4 Manual operation
The manual mode is only intended for mounting and
test purposes.
Inmanualmode,thestemcanbeextendedand
retractedmanuallywiththehelpofamagnet.
CAUTION
Risk of scalding due to hot uids
Inmanualmodetheactuatormightnotclose
fully.
There is a risk of scalding due to the uninten-
tionaldischargeofhotwater.
fOnlycarryoutworkwhenthesystemis
depressurised.
fAllowthesystemtocooldown.
fWear safety goggles.
1
Illust. 6: Manual operation
(1) Magnet
6.4.1 Extending the drive stem
1. Movetheactuatorintothemountingposition(DIP
switches(Bit1to6)setto“OFF”).
ZThedrivestemwillberetracted.
ZTheLEDwillashgreenquickly.
2. Strokealongtherightsideoftheactuatorwiththe
magnets(position(1)inIllust.6onpage13).
ZThedrivestemwillbeextended.
ZTheLEDwillashyellow.

Maintenance „Aktor M ST L Modbus“
14 101274584-V01.11.2019
6.4.2 Retracting the drive stem
1. Strokealongtherightsideoftheactuatorwith
themagnets(position(1)inIllust.6onpage13)
again.
ZThedrivestemwillberetracted(mountingposition).
ZTheLEDwillashgreenquickly.
The function "extending the drive stem" or
"retracting the drive stem" can only be triggered
againwhenthevalvehasreachedthenalpo-
sition. The operating time depends on the valve.
7. Maintenance
The actuator is maintenance-free.
8. Removal
CAUTION
Risk of burns due to hot components
Anunprotectedcontactwithhotcomponents
may lead to burns.
fBeforestartingwork,letthevalvecool
down.
fWear safety gloves.
1. Movetheactuatorintothemountingposition(DIP
switch(Bit1to6)setto“OFF”).
ZTheLEDwillashgreenquickly.
2. Disconnectthepowersupply.
3. Disconnect all electrical connections.
4. Pressthepushbuttontoreleasethelatchedvalve
stem(position(1)inIllust.2onpage7).
5. Unscrewthecollarnut.
6. Remove the actuator from the valve.
Also remove the adapter set if you do not requi-
re it any longer for this valve.
9. Disposal
Guideline 2012/19/EU WEEE:
Waste electrical and electronic equipment
(WEEE)mustnotbedisposedofwithdo-
mesticwaste,butmustbedroppedoffata
collection point for the recycling of electrical
and electronic appliances.
NOTICE
Risk of environmental pollution
Incorrectdisposal(forinstancewiththe
domesticwaste)mayleadtoenvironmental
damage.
fPackagingmaterialistobedisposedofin
an environmentally friendly manner.
fComponents are to be disposed of pro-
fessionally.
Ifnoreturnordisposalagreementhasbeenmade,
the product has to be disposed of.
fIfpossible,thecomponentsaretoberecycled.
fComponents,whichcannotberecycled,aretobe
disposed of according to the local regulations. Dis-
posalwiththedomesticwasteisinadmissible.

„Aktor M ST L Modbus“ Appendix
15
101274584-V01.11.2019
10. Appendix
10.1 Modbus topology
24V
D-
0V
D+
1234
AKTOR
24V D- 0V
D+
1234
AKTOR
24V D- 0V D+
1234
AKTOR
24V D- 0V D+
MASTER
24V
24V
0V
02
01 n
00
Illust. 7: Modbus topology
NOTICE
Disturbances during signal transmission in the bus system
IftheModbusisnotterminatedcorrectly,communicationdisturbancesbetweenthecomponentsmay
occur.
fInstallaterminalresistance(120Ohm)atthebeginningandtheendoftheModbusbetweenthe
data lines D+ and D-.
10.2 Data point list
Register
address
Data
type
Name R/W Values
0 uint16 Type r 1:Aktor
1 uint16 FW version r e.g. 123 = version 1.23
2 uint16 HWidentier r e.g. 0x00F1
3 uint16 SerNum1 r 0-65535
4 uint16 SerNum2 r 0-65535
5 uint16 SerNum3 r 0-65535
101 uint16 Time hour r/w 0-23tobesetmanually(nobatterybufferedRTC)
102 uint16 Time minute r/w 0-59tobesetmanually(nobatterybufferedRTC)
105 uint16 RS485 Baud rate r/w 0:default(38400,N,8,2);1:9.600;2:19.200;3:38.400;4:
57.600;
5:115.200
106 uint16 RS485 Stop bits r/w 1,2
107 uint16 RS485Parity r/w 0:none;1:even;2:odd
110 uint16 Selection of the current
valve characteristic line
r/w 0:linear
1:CoconQTRDN401500-7500l/h
2:CoconQTRDN50IG3500-14000l/h
3:CoconQTRDN40AG1500-7500l/h
4:CoconQTRDN50AG3500-10000l/h
5:CoconQFCDN401500-7500l/h
6:CoconQFCDN502000-8000l/h
113 uint16 Maximumvolumeow
of the selected valve
rInl/h,issetwhenselectingthevalvecharacteristicline

Appendix „Aktor M ST L Modbus“
16 101274584-V01.11.2019
114 uint16 Volumeowlimitation
heating (hydronic bal-
ancing)
r/w Adjustmentvalueinl/h,canbesetbetweenmin/maxofthe
valve
115 uint16 Volumeowlimitation
cooling (hydronic bal-
ancing)
r/w Adjustmentvalueinl/h,canbesetbetweenmin/maxofthe
valve
119 uint16 Fluid energy constant r/w Default1162mWperkg*Kelvin,canbeexceeded
123 uint16 SensortypeP1 r/w 0:Off
1:Binaryinput
2:0..10VInput
3:KP10
4:NI1000_DIN
5:NI1000_LG
6:PT1000
124 uint16 InversionP1 r/w 0:=normal;1:=inverse
125 int16 Correctionfactor/offset
P1
r/w V*100,K*10
126 uint16 I/OtypeP2 r/w 0:Off
1:Binaryinput
2:0..10Vinput
3:KP10
4:NI1000_DIN
5:NI1000_LG
6:PT1000
8:Youtput0..10V(register426)
9:Yfeedback0..10V(register401)
10:Change-overoutput(0V=cooling,5V=shut-off,
10V=heating)
127 uint16 InversionP2(input) r/w 0:=normal;1:=inverse
128 int16 Correctionfactor/offset
P2(input)
r/w V*100;K*10
129 uint16 InversionP2(output) r/w 0:=normal,1:=inverse
130 uint16 Congurationofthe
sources for differential
temperature calculation
r/w 0:Flowandreturntemperature:busregistervalue
1:Flow:P1,Return:P2
2:Flow:P2,Return:P1
3:Flow:P1,Return:bus
4:Flow:P2,Return:bus
5:Flow:bus,Return:P1
6:Flow:bus,Return:P2
131 uint16 Congurationofthe
sources for room tem-
perature
r/w 0:Busregister;1:P1;2:P2
133 uint16 Bus failure function r/w 0:Nomonitoring
1:CLOSEDincaseoftimeout(120s)
2:OPENincaseoftimeout(120s)
3:Positioninregister"emergencyposition"incaseoftime-
out

„Aktor M ST L Modbus“ Appendix
17
101274584-V01.11.2019
134 uint16 Emergency position r/w 0..10000 = 0..100.0%
135 uint16 Flushing timer r/w Valueinminutes,0:=inactive(smallestinterval60minutes)
136 uint16 Valve anti-blocking
timer
r/w Valueinhours,0:=inactive(smallestinterval24hours)
138 uint16 Command r/w 0:Normaloperation
1:Valveadaptation/initialisationrun2:Testrun
3:Sync
4:Errorreset
5:Acceptanceofthetransmissionparameters(Baudrate,
parity&stopbits)
200 uint16 Operating mode r/w 0:SteuerungüberSollwert
1:Auf
2:Zu
3:MinPos
5:MaxPos
6:Temperaturecontrolaccordingtoregister"roomtemper-
ature"
7:Outputcontrolaccordingtoregister"thermaloutput"
8:Temperaturecontrolaccordingtoregister"returntemper-
ature"
9:Temperaturecontrolaccordingtoregister“differential
temperature”
201 uint16 Change-over mode r/w 0:Shut-off
1:Heating
2:Cooling
3:Automaticaccordingtoowtemperature
300 uint16 Nominal value room
temperature
r/w °C*10
301 uint16 Nominal value thermal
Powerconsumption
r/w kW*10
302 uint16 Nominal value return
temperature
r/w °C*10
303 uint16 Nominal value differen-
tial temperature
r/w °C*10
307 uint16 PI_TNOMINAL rCurrentnominalvalueforPIcontroller
308 uint16 PI_TACTUAl rActualvalueforPIcontroller,sourceseesetting"operating
mode"
310 uint16 PI_XP r/w ProportionalvalueXp*10
311 uint16 PI_TN r/w Reset time Tn in seconds
312 uint16 Travel limit in % min r/w 0..10000 = 0..100.0%
313 uint16 Travel limit in % max r/w 0..10000 = 0..100.0%
314 uint16 Thermal output limit r/w kW*10;0=inaktiv
315 uint16 Return temperature
limit
r/w °C*10;0=inactive
316 uint16 Differential temperature
limit
r/w °C*10;0=inactive(differencebetweensupplyandreturn)

Appendix „Aktor M ST L Modbus“
18 101274584-V01.11.2019
318 uint16 Operatingstatus/
Error
r0x0000:Normaloperation,nomessage
0x0001:Disturbanceinternalmemory
0x0002:DisturbanceinternalADconversion
0x0004:Disturbancevalveadaptation
0x0008:Disturbanceinternalmotorfunction
0x0010:P1rangeexcess
0x0020:P2rangeexcess
0x0040:Disturbancecalculation/controlfunctions
0x0080:Permanentblockingofthevalve
0x0100:Commandexecutiontestrun/adaptationactive
319 uint16 Currentushingtimer rMinutesremaininguntilushing
320 uint16 Current valve an-
ti-blocking timer
rMinutesremaininguntilvalveanti-blocking
321 uint32 Operating time r Seconds
323 uint32 Travel counter r mm
400 uint16 Nominal value volume
ow(controlsignal)
r/w 0..10000 = 0..100%
401 uint16 Actual value volume
ow
r 0..10000 = 0..100%
402 uint16 Current calculated
volumeow
rl/h
403 int16 Room temperature r(w) °C*10(writeprotectedincaseofassignedsourceP1orP2)
404 int16 Flowtemperature r/(w) Currentowtemperaturein°C*10(writeprotectedincase
ofassignedsourceP1orP2)
405 int16 Return temperature r/(w) Currentreturntemperaturein°C*10(writeprotectedincase
ofassignedsourceP1orP2)
406 int16 Differential temperature r Calculateddifferencefromow/returntemperatureregister
inK*10
407 uint16 Leakagewarning r0:Nowarning;1:Leakagedetected(valveclosedformore
than6h,differentialtemperatureexceeding8K)
408 uint16 Digital contact 1 r 0/1
409 uint16 Digital contact 2 r 0/1
410 uint16 Current calculated
thermal output
rkW*10(displayincoolingandheatingmodewithoutsigns.)
411 uint16 Energy since 0 a.m. r kWh*10
412 uint16 Energy last 24h r kWh*10
413 uint16 Change-over status r 0:Shut-off;1:Heating;2:Cooling
414 uint16 Current maximum vol-
umeow
rCurrentvalueinl/h
415 uint16 InitialvaluePIcontroller r 0..100%
418 uint16 Nominal position r mm*10
419 uint16 Actual position r mm*10
420 uint16 Learned total travel r mm*10
424 int16 SensorinputP1 rV*100,°C*10;0/1
425 int16 SensorinputP2 rV*100,°C*10;0/1
426 uint16 YoutputP2 r/w Voltagevalue0..1000foroutputsignal0..10V(forcongura-
tionI/OtypeP2:8:Youtput0..10V)

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www.oventrop.com 101274584 V01.11.2019