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Technichal Manual Heating Actuators AKH

MDT technologies GmbH •

51766 Engelskirchen

• Papiermühle 1

Tel.: +49-2263-

880 • Fax: +49

-2263-4588

• [email protected] • www.mdt.de

6.4 Controller

Three different controller types can be chosen for the control value. These controller types are
described for the heating process by the following illustrations.

6.4.1 2-Step control

Содержание AKH - 0800.01

Страница 1: ...MDT technologies GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 12 2014 Technical Manual MDT Heating actuators AKH 0400 01 AKH 0800 01...

Страница 2: ...ommunication objects 10 3 3 1 Communication objects switching 1 Bit 11 3 3 2 Communication objects continuous 1 Byte 11 3 3 3 Communication objects integrated controller 12 3 4 Default settings of the...

Страница 3: ...Operating modes 36 4 5 2 Priority of the operating modes 38 4 5 3 Operating mode switchover 38 4 5 4 Setpoint offset 41 4 5 5 Message function 43 4 5 6 Heating Cooling system 44 4 5 7 Additional setti...

Страница 4: ...A mixture of both voltages forbidden 2 2 Usage Areas of use The heating actuator can be connected to 24V AC or 230V AC so it allows controlling electrothermic valve drives with 24V AC or 230V AC The...

Страница 5: ...s GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 5 2 3 Exemplary circuit diagram Figure 1 Exemplary circuit diagram heating actuator 4 fold 230V Figure 2...

Страница 6: ...ming knob programming LED which shows an active programming mode and a bus connection The electrothermic valve drives can be connected by the terminal strip with respecting the circuit diagrams Every...

Страница 7: ...By further options like valve type activatable blocking objects activatable emergency mode and dew point alarm as well as status objects the channel can be adjusted for the present valve type continu...

Страница 8: ...s objects for the control value activatbale continuous 1 Byte Switching functions same as switching mode 1Bit Control value functions PWM cycle time parameterize able Minimum Maximum limitation of the...

Страница 9: ...shows the switching behavior of the output If the 2 step controller sends a 1 signal the LED is switched on continuous mode 1 Byte integrated controller The LED operates at the PWM mode with the fixe...

Страница 10: ...nels According to the parameterization maximum 6 global objects can be shown The first two objects numbers 80 160 and 81 161 are for the switchover of summer winter mode and for the switchover of heat...

Страница 11: ...ol value is executed as 1 Bit value Furthermore additional objects depending to the parameterization are available The chart shows the available objects Nr Function Usage 0 Control Value Input for ext...

Страница 12: ...ue Out Read 4 Message emergency mode indicates an active emergency mode Out Read 5 Forced position activates the forced position In Write 5 Dew point alarm activates the dew point alarm In Write Table...

Страница 13: ...arm In Write 6 PWM Cooling for 4 Pipe system Output for Cooling at a divided heating cooling system Out Read 7 Setpoint comfort adjustment of a new absolute setpoint In Write 8 Setpoint value offset S...

Страница 14: ...Bit Low X X 6 Channel A PWM Cooling for 4 Pipe system 1 Byte Low X X X 7 Channel A Setpoint comfort 2 Byte Low X X 8 Channel A Setpoint value offset 2 Byte Low X X 9 Channel A Actual setpoint 2 Byte...

Страница 15: ...n 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 u...

Страница 16: ...ll channels Figure 8 Setup general 4 1 1 Device configuration The following both parameters are for the configuration of the actuator Figure 9 Device configuration The following chart shows the dynami...

Страница 17: ...fth channel of the 8 fold actuator has to be connected first Otherwise a fault will be detected Attention Every actuator can operate only one voltage either 230V or 24V A combination of both voltages...

Страница 18: ...actuator shall switch a cooling or not defines the switchover between heating and cooling Control values set to 0 at summer mode No Yes This setting can only be done if the ooli g is hose as ot a ti...

Страница 19: ...communication objects Number Name Length Usage 81 161 Heating Cooling 1 Bit Switchover between heating 1 and cooling 0 82 162 Heating Cooling requirement 1 Bit sends a if all al es a e losed a d if o...

Страница 20: ...only sent at a change or at a change and additional cyclically every 30min This function allows heati g s which can modulate their power if only less power is required The object for the output Number...

Страница 21: ...ustment which values shall be requested or which mode shall be activated in case of bus power return Table 16 Behavior after bus power reset The behavior after bus power return defines which values sh...

Страница 22: ...t f o step controllers or a PWM converted control value If a continuous signal e g of a PI control is given you have to select the operating mode o ti uous B te B the ode i teg ated o t olle the heati...

Страница 23: ...m temperature controller like the SCN RT which is adjusted as 2 step controller or as PWM controller Number Name Length Usage 0 Control value 1 Bit Processes the incoming control value Table 18 Commun...

Страница 24: ...r every channel whether a state object for the control value shall be shown or not Furthermore the sending conditions are selectable Sub function Dynamic range default value comment Send state control...

Страница 25: ...l during the block process no changes will be happen But the channel takes the value of the last telegram after unblocking Number Name Length Usage 2 Block 1 Bit blocks the belonging channel Table 24...

Страница 26: ...can be adjusted in a percental value from 0 100 The fixed value is converted into a PWM signal with a fixed PWM cycle of 10min This setting prevents the heating of an unchecked use in case of a failur...

Страница 27: ...sition summer 100 90 80 0 0 Adjustment of the control value at the summer mode by an activated forced position Table 28 Forced position The forced position drives the control value to a fixed position...

Страница 28: ...ke the operati g ode s it hi g 1 Bit These setti gs are ot described again at this section There are additio al setti gs a aila le at the operati g ode o ti uous hi h are des ri ed at the following se...

Страница 29: ...itched off for 2 5min The dynamic range of the PWM cycletime is shown at the following chart Sub function Dynamic range default value comment PWM cycletime i i i i 20min 25min 30min 10min Adjustment o...

Страница 30: ...l adjustment time of the valve So the time at wich the valve is really opened is much smaller than the controlling during one PWM cycle The principle of this option is shown at the diagram below The w...

Страница 31: ...lve drives continuous open If the temperature increases the adjusted value the temperature controller readjusts the control value and so the PWM pulse is calculated again Long term an alomost continiu...

Страница 32: ...e height of the control value which is transmitted to create a PWM signal The limitation is activated when a value is chosen which is smaller higher than the possible value for the control value so mi...

Страница 33: ...inactive 15 C 16 C C C 18 C Adjustment of the minimum flow temperature at cooling Table 33 Flow temperature limit The flow temperature limit restricts the actual flow temperature This allows you to l...

Страница 34: ...a lot of additional functions available which are described at the following sections At the o al e u the o l diffe e e et ee the ope ati g ode i teg ated o t olle and the ope ati g ode o ti uous is t...

Страница 35: ...Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 35 The su e u o t olle ge e al fo the heati g ode is sho at the follo i g illust atio Figure 24 Controller general The parameteriza...

Страница 36: ...oint valid for heating and cooling Setpoint heating Standby reduction K K K K K 2 0K Adjustment of the reduction at the heating mode and adjusted standby mode Night reduction K K K K K 3 0K Adjustment...

Страница 37: ...object operating mode night 4 5 1 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...

Страница 38: ...the same time The night mode will only be active when the comfort mode is switched off now the controller changes automatically to the night mode 4 5 3 Operating mode switchover There are 2 possibilit...

Страница 39: ...he following example shall clarify how the controller handles received Hex values and switches operating modes on or off The chart is to read from the top to the down Example The priority was set as F...

Страница 40: ...Sensor 1 Error 0x01 8 Heating Cooling 0 Cooling 1 Heating 0x100 13 Frost alarm 1 Frost alarm 0x2000 14 Heat alarm 1 Heat alarm 0x4000 Table 44 Hex Values DPT RHCC Status The Controller reacts always...

Страница 41: ...d be send or not Table 46 Setpoint offset only from Hardware Revison 2 0 The setpoint can be changed manual by the setpoint offset without a new parameterization by the ETS Software Therefore 2 varian...

Страница 42: ...e e t If the o t olle is for example set to a basic comfort setpoint of 3K the setpoint can only be moved manual in the limits of 18 C and 24 C The setti g a setpoi t offset alid fo defi es the s ope...

Страница 43: ...bale if message function is activated Message if value inactive 18 C 40 C 35 C Adjustment of the upper report value Setting availbale if message function is activated Table 48 Message function The mes...

Страница 44: ...Proportional range K 1K 8K 2K If Adjust e t ia o t ol pa a ete is sele ted fo the heating cooling system the proportional range can be chosen freely Reset time min 15min 210 min 150 min If Adjust e t...

Страница 45: ...ast systems small recovery times big proportional range almost no danger of swing across long recovery times usage at slow systems which need huge amplifications big heating power etc 4 5 6 2 Reset ti...

Страница 46: ...ti g Pipe s ste a combined heating and cooling system is geiven So one channel controls one and the same valve for heating and cooling If the setti g Pipe s ste is sele ted a di ided s ste is gi e ith...

Страница 47: ...re 10 Summer Winter mode 17 Figure 11 Heating Cooling switchover 18 Figure 12 Protection of forse fit 19 Figure 13 max Control value 20 Figure 14 Behavior after bus power reset 21 Figure 15 Mode selec...

Страница 48: ...rol value 24 Table 22 Communication object state control value 24 Table 23 Blocking function 25 Table 24 Communication object blocking function 25 Table 25 Emergency mode 25 Table 26 Forced position D...

Страница 49: ...H 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 49 Table 49 Communication objects message function 43 Table 50 Heating cooling system 44 Table 51 Combined sy...

Страница 50: ...can occur danger for humans animals or material assets Do not let the packaging lying around careless plastic foil bags etc can be a dangerous toy for kids 6 2 Routine disposal Do not throw the waste...

Страница 51: ...irchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 51 6 4 Controller Three different controller types can be chosen for the control value These controller types are described...

Страница 52: ...Technichal Manual Heating Actuators AKH MDT technologies GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 52 6 4 2 PI control continuous...

Страница 53: ...Technichal Manual Heating Actuators AKH MDT technologies GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 53 6 4 3 PI control switching PWM...

Страница 54: ...Technichal Manual Heating Actuators AKH MDT technologies GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 54 6 5 Direction of controller 6 5 Datasheet...

Страница 55: ...g Actuator is a modular installation device for ixed installation in dry rooms It its on DIN 35mm rails in power distribution boards or closed compact boxes For project design and commissioning of the...

Страница 56: ...wire gauge Screw terminal 0 5 4 0mm solid core 0 5 2 5mm inely stranded KNX busconnection terminal 0 8mm solid core Power supply KNX bus Power consumption KNX bus typ 0 3W Operation temperature range...

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