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Technical Manual Glass Room Temp. Contr. SCN-RT1Gx.01

MDT technologies GmbH •

51766 Engelskirchen • Papiermühle 1

Tel.: +49-2263-

880 • Fax: +49

-2263-4588

• [email protected] • www.mdt.de

42

The switchover of the operating modes via 1 Byte occurs by only one object, with the size of 1 Byte,
the DPT_HVAC Mode 20.102 of KNX-specification. Additional, there are 2 objects for the visualization
available, the 1 By

te o je t DPT_HVAC “tatus a d the B te o je t DPT_RHCC “tatus . Fo the

switchover of the operating modes, a Hex-

alue is se t to the o je t ode sele tio . The o je t

evaluates the received value and switches the belonging operating mode on and the active operating
mode off. If all operating modes are switched off (Hex-value=0), the operating mode standby will be
switched on.
The Hex-values for the operating modes are shown at the chart:

Operating mode (HVAC Mode)

Hex-Value

Comfort

0x01

Standby

0x02

Night

0x03

Frost/Heat protection

0x04

Table 28: Hex-Values for operating modes

The 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

Frost/Comfort/Night/Standby.

received Hex-value

Handling

adjusted operating

mode

0x01

Comfort=1

Comfort

0x03

Comfort=0

Night=1

Night

0x02

Night=0

Standby=1

Standby

0x04

Frost-/Heat protection=1

Standby=0

Frost-/Heat protection

Table 29: Example operating mode switchover via 1 Byte

The DPT HVAC Status communication, DPT_HVAC Status (without number) of KNX-specification,
object sends the hex value for the adjusted operating mode. When more than one testify is valid, the
hex values are added and the communication object sends the added value. The hex values can be
read from visualization afterwards.
The following chart shows the hex values for the single messages:

Bit DPT HVAC Status

Hex-Value

0

Comfort

1=Comfort

0x01

1

Standby

1=Standby

0x02

2

Night

1=Night

0x04

3

Frost-/Heat protection

1= Frost-/Heat protection

0x08

4

5

Heating/Cooling

0=Cooling/1=Heating

0x20

6

7

Frost alarm

1=Frost alarm

0x80

Table 30: Hex-Values DPT HVAC Status

If you heat at the comfort mode, the communication object will send the value 20 (for heating) +1
(for the comfort mode) =21.

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Summary of Contents for SCN-RT1GS.01

Page 1: ...MDT technologies GmbH 51766 Engelskirchen Papiermühle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 1 2015 Technical Manual MDT Glass Room Temperature Controller SCN RT1GW 01 SCN RT1GS 01 ...

Page 2: ...mmunication objects 9 3 1 Summary and Usage 9 3 1 1 LCD Display 9 3 1 2 Room temperature controller 10 3 1 3 Ventilation Control 15 3 1 4 Key functions 19 3 2 Default settings of the communication objects 22 3 2 1 LCD Display 22 3 2 2 Room Temperature Controller 22 3 2 3 Lüftungssteuerung 24 3 2 4 Key functions 25 4 General settings 26 5 Settings LCD Display 27 5 1 General 27 5 2 LCD Alarm message...

Page 3: ...ode switchover 41 6 3 2 7 Operating mode after reset 44 6 3 3 Setpoint offset 45 6 3 4 Disable objects 47 6 3 5 Heating Cooling request objects 48 6 3 6 Guiding 49 6 3 7 Dead zone 51 6 4 Controller setting 53 6 4 1 Control value 53 6 4 2 PI control continuous 54 6 4 2 1 Max value of control value 55 6 4 2 2 Heating cooling system 55 6 4 2 3 Proportional range 55 6 4 2 4 Reset time 56 6 4 2 5 Send ...

Page 4: ...icking protection 73 7 1 7 Priority 73 7 1 8 Status 74 7 2 Step Switch binary coded 74 7 3 Step switch simply 75 7 4 Step switch as Byte 75 8 Key functions 77 8 1 Buttons grouped 77 8 1 1 Dimmen 78 8 1 2 Shutter 80 8 1 3 Switch 81 8 2 Buttons separately 82 8 2 1 Switch 82 8 2 1 1 Switch on key press 82 8 2 1 2 Toggle on key press 83 8 2 1 3 Send value on key press 83 8 2 2 Scene 84 8 2 3 Switch sh...

Page 5: ...e text message With the control various control schemes can be realized Applications range reaches from the room temperature controlling of a room with heating and or air conditioning as well as in heating or cooling systems The application program of the room temperature controller allows you to use your device for heating cooling or heating and cooling systems Depending on which function is sele...

Page 6: ...agram Figure 1 Exemplary circuit diagram 2 4 Design Usage The following figure provides an overview of the structure and controls Figure 2 Design Usage 1 Programming button lateral notch in the housing below the glass 2 Button for switching between the functional blocks 3 Button for specific functions of the function block shown 4 5 Buttons for switching in each functional block 1 2 3 4 5 ...

Page 7: ...surements such as min max values and sensor configurations can be parameterized o Alarm Messages Alarms messages which show falling below or exceeding certain temperatures can be set here Also messages which are shown at the display can be set here o Controller general The desired function Heating and or Cooling are set in this menu Furthermore the setpoints and operating modes can be set here o C...

Page 8: ... 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 comple...

Page 9: ...e Switch Communication object is permanently displayed and used for switching the backlight of the display 54 Time Receive status DPT 10 001 receive Display responds to input telegram Time Switch Group monitor once Visu Communication object is permanently displayed and used to show the right time of day Value should be sent regularly to achieve sufficient accuracy 56 59 Message 1 4 Alarm input for...

Page 10: ...ontroller 0 Actual temperature value Transmit temperature value DPT 9 001 send Controller sends current temperature Visu Display Diagnostic Communication object is shown permanent and sends according to the setting its current value or can only be read via the bus 1 max temperature Exceeded value DPT 1 001 send Controller sends state Visu Display Diagnostic Communication object is shown when messa...

Page 11: ...omfort Set setpoint DPT 9 001 receive Controller receives new absolute setpoint Visu Opereating keys Control unit Object is permanent shown when the controller is active A new setpoint can be set via this object 7 Manual setpoint value offset Reduction Increase DPT 9 002 receive Controller receives new setpoint offset Visu Display Operating keys Control unit Object is shown when the setpoint offse...

Page 12: ...er type two level PWM DPT1 001 PI DPT5 001 10 Control value cooling Send control value DPT 1 001 DPT 5 001 send Controller sends manipulated value Heating actuator actuators Object is shown when the controller is set to cooling The DPT depends to the controller type two level PWM DPT1 001 PI DPT5 001 11 Mode comfort Switch mode DPT 1 001 receive Controller switches mode Visu Opereating keys Contro...

Page 13: ...or for switching the ooli g pu p Can be activated in the settings when the controller is set to cooling 19 Heating Cooling switchover 0 heating 1 cooling DPT 1 001 receive Controller switches between heating and cooling Visu Opereating keys Control unit Can be activated in the parameter when the controller is set to heating and cooling 20 Outside temperature Read external sensor DPT 9 001 receive ...

Page 14: ... osti Object is always shown when the controller is active 29 Actual setpoint Send setpoint DPT 9 001 send Conntroller sends current setpoint at a read request Visu Display Diag osti Object is always shown when the controller is active 30 RHCC Status Send controller status DPT 22 101 send Controller sends current state Visu Display Diag osti Object is always shown when the controller is active 31 ...

Page 15: ...nt can be set in the parameters Table 2 Overview communication objects Room Temperature Controller 3 1 3 Ventilation Control Objects for Ventilation Control 38 Ventilation Control Block DPT 1 003 receive Controller locks ventilation control Visu Operating keys Control unit Displa Object is only shown when the locking function was activated in the settings 39 Ventilation Control Level 1 DPT 1 001 s...

Page 16: ... Control Level 1 2 DPT 1 001 send Controller switches level 1 und 2 Actuator for controlling a ventilation system Fan Coil actuator Object is shown at the setting step switch simply 41 Ventilation Control Level 3 DPT 1 001 send Controller switches level 3 Actuator for controlling a ventilation system Fan Coil actuator Object is shown at the setting step switch bit coded 41 Ventilation Control Bit ...

Page 17: ...nt status Visu Operating keys Control unit Displa Object must be activated in the setti gs the pa a ete Use status o je t as O je t sends the current level Value 1 Le el Value Le el 43 Ventilation Control Status for ventilation active DPT 1 001 send Controller sends current status Visu Operating keys Control unit Displa Object must be activated in the setti gs the pa a ete Use status o je t as O j...

Page 18: ...ends its current value if the value was toggled at the display Visu Operating keys Control unit Displa Object is always shown when the ventilation control is active 47 Ventilation Control Control levels manually DPT 1 008 receive Controller switches controller level according to the incoming telegram 1 1 level up 0 1 level down Visu Operating keys Control unit Displa Object is always shown when th...

Page 19: ... D Switch On Off DPT 1 001 send Display sends current value it h a tuato Object is shown at the setting Buttons grouped Switch 62 Button C D Dimming DPT 3 007 send Display sends current value Dimming actuator Object is shown at the setting Buttons grouped Dimming 62 Button C D Stop Slats Open Close DPT 1 009 send Display sends current value Shutter actuator Object is shown at the setting Buttons g...

Page 20: ...short long On Off 61 Button C Short key press DPT 5 001 send Display sends value Akto Object is shown at the setting Buttons separately Switch short long Send value 61 Button C Toggle Heating Cooling DPT 1 001 send Display sends value Regler interne Ve a eitu g Object is shown at the setting Buttons separately Toggle heating cooling 62 Button C Value for toggle DPT 1 001 receive Display receives c...

Page 21: ...el 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 21 63 Button C Long key press DPT 5 001 send Display sends value Akto Object is shown at the setting Buttons separately Switch short long Send value 64 67 Button D same functionality as button C available Table 4 Overview communication objects Key functions ...

Page 22: ...ive status 3 Byte Low X X X 56 59 Message 1 4 Alarm input fort ext message 1 Bit Low X X 60 Message 14 Byte Variable text message 14 Byte Low X X Table 5 Default settings communication objects LCD Display 3 2 2 Room Temperature Controller Default settings Nr Name Object Function Length Priority C R W T U 0 Actual temperature value Transmit temperature value 2 Byte Low X X X 1 max temperature Excee...

Page 23: ...st 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 20 Outside temperature Read external sensor 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 i...

Page 24: ... X 39 Ventilation Control Level 1 2 1 Bit Low X X X 41 Ventilation Control Level 3 1 Bit Low X X X 41 Ventilation Control Bit 2 1 Bit Low X X X 41 Ventilation Control Level 1 2 3 1 Bit Low X X X 42 Ventilation Control Level 4 1 Bit Low X X X 42 Ventilation Control Level 1 2 3 4 1 Bit Low X X X 43 Ventilation Control 1 Byte Status ventilation level 1 Byte Low X X X X 43 Ventilation Control Status f...

Page 25: ...t Low X X X 62 Button C D Stop Slats Open Close 1 Bit Low X X X 63 Button C D Status dimming value 1 Byte Low X X 63 Button C D Status absolute position 1 Byte Low X X Buttons separately 61 Button C Switch 1 Bit Low X X X 61 Button C Send value 1 Byte Low X X X 61 Button C Short key press 1 Bit Low X X X 61 Button C Short key press 1 Byte Low X X X 61 Button C Toggle Heating Cooling 1 Bit Low X X ...

Page 26: ...ce Figure 3 Menu General Settings In der nachfolgenden Tabelle sind die Einstellmöglichkeiten für dieses Menü dargestellt ETS text Dynamic range default value comment Startup delaytime 0 60s 0s defines the time between a reset and the functional start of the device Day Night polarity Day 1 Night 0 Day 0 Night 1 defines the polarity of the day night object Query of day night object after reset No Y...

Page 27: ...ntr SCN RT1Gx 01 MDT technologies GmbH 51766 Engelskirchen Papiermühle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 27 5 Settings LCD Display 5 1 General The follo i g figu e sho s the e u LCD Displa Figure 4 Menu LCD Display ...

Page 28: ... Fax 49 2263 4588 knx mdt de www mdt de 28 The following table shows the general settings for the LCD Display ETS text Dynamic range default value comment Language German English Selection of the language Query of time after reset No Yes defines whether the time is queried after a reset Table 10 General settings LCD Display ...

Page 29: ...block temperature time or outside temperature is shown is only kept if the standby mode shows more than one functional block Time until Display changes into standby never 60s 20s defines the time between the last key press and activating of the standby mode Shown functional blocks Temperature controller Ventilation control Temperature controller and function Temperature controller and ventilation ...

Page 30: ...int adjustment via the display Table 12 Settings LCD Display Room Temperature Controller The following table shows the available settings for adjusting the brightness of the LCD Display ETS text Dynamic range default value comment Basic brightness Brightness 1 Brightness 2 Brightness 3 Brightness 4 defines the basic brightness of the display Minimum brightness at day off dark medium bright defines...

Page 31: ...he value 1 In addition a variable text message can be enabled At this object any string of the length 14 characters can be sent For all text messages it can be selected whether they are saved or displayed only briefly displayed only briefly The message is deleted when the display goes into standby mode Changes the display after 20 seconds in standby mode the message will be removed after 20 second...

Page 32: ...owing picture shows the functional block temperature controller 1 Switching between functional blocks 2 Switching between operating modes 3 4 Decrease increase the setpoint 5 Current temperature 6 Current operating mode 7 Current Setpoint The following picture shows the functional block ventilation control 1 Switching between functional blocks 2 Switching between automatic manual mode 3 4 Decrease...

Page 33: ... picture shows the functional block function with here with a grouped dimming function 1 Switching between functional blocks 2 3 Dimming up down 4 Display of the function and the current state 5 3 3 Presentation of text messages The following picture shows an active text message 1 Acknowledgment of the message 2 Switching between the messages in the memory 3 Shown messages here the first of one 4 ...

Page 34: ...e 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 e...

Page 35: ...ject for the temperature value Number Name Length Usage 0 Actual temperature value 2 Byte sends the current temperature value Table 15 Communication object temperature value Send min max value This function activates the sending and saving of the min max values When the function is a ti ated e d e a le th ee o u i atio o je ts ill e sho T o o je ts fo the Min and the Max value and one for the rese...

Page 36: ...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...

Page 37: ... Heatalarm 1 Bit send heatalarm Table 19 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 poss...

Page 38: ... 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 depend to the adjusted controller type Table 21 Setting controller type The controller type defines the function of the room temperature controller Target of the control is to keep an adjusted temperature cons...

Page 39: ... 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 set...

Page 40: ...ting 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 ce...

Page 41: ...d on to 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 6 3 2 6 Operating mode switchover There are 2 possibilities for the switchover of the operating modes On the one hand the operating modes can be switched on by their 1 Bit communication object and on the other hand by a 1 Byte object The selectio...

Page 42: ...troller 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 Frost Comfort Night Standby received Hex value Handling adjusted operating mode 0x01 Comfort 1 Comfort 0x03 Comfort 0 Night 1 Night 0x02 Night 0 Standby 1 Standby 0x04 Frost Heat protection 1 Standby 0 Frost Heat protection Table 29 Example operat...

Page 43: ...as sent last If you switched the operating mode last via 1 Bit the controller will react to the switchover by 1 Bit If you switched the operating mode last via 1 Byte the controller will react to the switchover by 1 Byte The communication objects for the mode selection are shown at the following chart The first 3 communication objects are for the 1 Bit switchover the last 3 objects are for the swi...

Page 44: ...ith parameterized setpoint Standby with parameterized setpoint Hold old state and setpoint Adjustment which operating mode shall be switched on after a bus power return Table 33 Operating mode after reset This parameter defines the operating mode which shall be adjusted after a bus power return Comfort with parameterized setpoint After a bus power return comfort is activated with the setpoint whic...

Page 45: ...ble 34 Setpoint offset The setpoint can be changed manual by the setpoint offset without a new parameterization by the ETS Software Therefore 2 variants are available On the one hand a new setpoint can be pretended the o u i atio o je t etpoi t o fo t O the othe ha d the adjusted setpoi t a e i eased o de eased a ual the o u i atio o je t a ual setpoi t alue offset At the read in of a new absolute...

Page 46: ... the s ope of the setpoi t offset You a hoose whether the setpoint offset is only valid for the comfort mode or also for the night and standby mode The operating mode frost heat protection is always independent of the setpoint offset The setti g Reset setpoi t afte ha ge of ode i di ates hethe a setpoi t offset shall e maintained after a change of mode or not If this parameter is deactivated the d...

Page 47: ...sted controller type one or two blocking objects are available The blocking objects disable the control value The blocking objects can be used when the heating or cooling system shall be prevented of an unwanted start If the heating must not start at special situations for example when a window is opened the blocking object can be used Another usage of this function is for example the manual block...

Page 48: ...est objects The setti g Heati g Cooli g e uest e a led a sho o je ts hi h i di ates a egi i g heati g or cooling process So these objects are status objects The objects can be used for the visualization of a beginning or ending heating cooling process So for example a red LED could show a heating process and a blue LED a cooling process A further opportunity for the usage is the central switch of ...

Page 49: ...inuous increment or decrement of the control value can be caused For adjusting how the guiding shall impact to the control value three settings are necessary Guiding value minimum wmin guiding value maximum wmax and setpoint variation at maximum guiding value X The settings for the guiding value maximum wmax and minimum wmin describe the range of temperature in which the guiding starts and ends ha...

Page 50: ...g of the reference temperature for the guiding Table 41 Communication object guiding Example for the usage For the temperature regulation of a room the setpoint 22 C shall be increased in a way that at a measured outside temperature range of 28 C to 38 C the difference of the temperature outside and inside is never more than 6K The following settings must be done at the controller Basics Comfort s...

Page 51: ...4 4 1 controller type was set as heating and cooling Now the dead zone can be parameterized The dead zone describes the range at which the controller neither heats nor cools So the controller sends no value to the control value when he is in the dead zone At the setting for the dead zone it is to note that a value which was chosen too small causes many switches between heating and cooling Whereas ...

Page 52: ...s for the nigh and standby reduction increase at heating and cooling These setpoints are calculated in dependence to the basic comfort setpoints The setpoints for the frost and heat protection are individually from the dead zone and the other setpoints The following illustration shows the correlations between dead zone and the setpoints for the single operating modes The following settings are mad...

Page 53: ...following controller can be chosen PI control continuous 6 4 2 PI control switching PWM 6 4 3 2 step control switching 6 4 4 The following chart shows the relevant communication objects Number Name Length Usage 8 Control value heating 1 Byte 1 Bit controlling of the actuator for heating 8 Control value heating cooling 1 Byte 1 Bit controlling of the combined actuator for heating and cooling 10 Con...

Page 54: ...a control parameter Adjustment of the used heating system Individual parameterization available by Adjust e t ia o t ol pa a ete Cooling system Split Unit 4K 90min Cooling ceiling 5K 240 min Adjustment via control parameter Adjustment of the used cooling system Individual parameterization available by Adjust e t ia o t ol pa a ete Proportional range K 1K 8K 2K By choosing heating cooling system as...

Page 55: ...or the used heating cooling system You can use preset values which fit to determined heating or cooling systems or parameterize the proportional range and the reset time freely The preset values for the corresponding heating or cooling system are based on empirical values and lead often to good controlling results By choosi g Adjust e t ia o t ol pa a ete the p opo tio al a ge a d the eset ti e a ...

Page 56: ... means that the controller has a strong I component A short integral has the effect that the manipulated variable is quickly approaching the proportional band corresponding to the set control value A large integral causes a slow approach to this value Important to note is that a too small reset time can cause an overshoot Basically can be mentioned slower systems need a greater reset time 6 4 2 5 ...

Page 57: ...available at the PI control switching Additional a PWM cycletime can be adjusted The following chart shows the dynamic range for this parameter ETS text Dynamic range default value comment Direction of controller normal inverted indicates the controlling behavior at rising temperature 4 5 5 Max value of control value 100 90 80 75 70 60 50 40 30 25 20 10 0 100 indicates the output power at maximum ...

Page 58: ...the control value will be switched on for 7 5min and switched off for 2 5min In principle you can say each carrier the system each bigger the cycletime Cooling system Split Unit 4K 90min Cooling ceiling 5K 240 min Adjustment via control parameter Adjustment of the used cooling system Individual parameterization available by Adjust e t ia o t ol pa a ete Proportional range K 1K 8K 2K By choosing he...

Page 59: ...ting for the switching off point and the switching on point Use additional level No Yes Activation of an additional level possible only for heating 4 5 6 Table 47 Two step control switching The 2 step control is the easiest way of controlling The controller switches the control value only on and off The controller switches the control value for example at heating on when the measured temperature f...

Page 60: ... current adjusted setpoint Example The controller is adjusted as heating with and a basic comfort setpoint of 21 C and a hysteresis of 2K So the controller switches the control value at the mode comfort on at 20 C and off at 22 C To note is that a big hysteresis generates big differences of the room temperature A small hysteresis can generate an almost permanent switching process because the point...

Page 61: ...s PI control switching and 2 Step control An inverted control value is for adaption to normally opened valves at the 2 Step control and at the PI control switching An inverted control value means for the single control values by controller type heating the following adjustments PI control continuous The control value falls at raising regular difference and rises at falling regular difference PI co...

Page 62: ...ller can be chosen for the additional level too The control value can be chosen as PI control switching PWM or 2 Step control So the communication object for the additional level has always the size of 1 Bit The distance in K describes the setpoint of the additional level The adjusted distance is deducted from the setpoint of the basic level the resulting value is the setpoint for the additional l...

Page 63: ...T technologies GmbH 51766 Engelskirchen Papiermühle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 63 The following illustration shows the combination of the basic level and the additional level Figure 27 Combination of basic and additional level ...

Page 64: ...e controller type 6 3 1 Controller type is chosen as heating and cooling the upper shown settings are available By the setting for the system the used system can be chosen When a combined heating and cooling system is used the setting 2 Pipe system must be chosen When a divided system for heating and cooling is used the setting 4 Pipe system must be chosen Furthermore it is possible to choose betw...

Page 65: ...6 4 7 2 4 Pipe System When a divided pipe system is used both operations can be parameterized individually Consequently two communication objects for the control value exist So it is possible to control the heating process e g via a PI control continuous and the cooling process e g via a 2 step control because both processes are controlled by different devices So for every of the both processes ar...

Page 66: ...mp Contr SCN RT1Gx 01 MDT technologies GmbH 51766 Engelskirchen Papiermühle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 66 The following illustration shows the setting options for a 4 Pipe system Figure 30 4 Pipe system ...

Page 67: ...mains set but does not heat as long as the temperature is above the adjusted setpoint for heating By choosing the switchover via object an additional communication object is shown By this object the switchover can be done The controller stays as long at the adjusted operating mode until it becomes a signal via the according communication object As long as the controller is at the heating mode only...

Page 68: ...hnologies GmbH 51766 Engelskirchen Papiermühle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 68 7 Ventilation control 7 1 Step switch bit coded The following figure shows the available settings for the menu step switch Figure 31 Step switch bit coded ...

Page 69: ... Level 3 Level 4 defines the maximum level at mode day Minimum level at night Level 0 Level 1 Level 2 Level 3 Level 4 defines the minimum level at mode night Maximum level at night Level 0 Level 1 Level 2 Level 3 Level 4 defines the maximum level at mode night Table 52 Day Night switchover level controller The day night switchover limits the minimum maximum level for the day night mode If the vent...

Page 70: ... threshold level 4 is switched on Hysteresis 0 20 5 Hysteresis for the switchover of the output stage Type of thresholds Delta T Threshold level 1 1 0K 10 0K 2 0K Below this threshold all levels are switched off above this threshold level 1 is switched on Threshold level 2 1 0K 10 0K 4 0K Below this threshold level 1 is switched on above this threshold level 2 is switched on Threshold level 3 1 0K...

Page 71: ...d a threshold of 60 ppm at 60 on and at 55 off Send output cyclic With this parameter the cyclic sending of the outputs can be activated In this case all output states according to the adjusted time are sent cyclically The following table shows the relevant communication objects Number Name Length Usage 39 Output level 1 1 Bit Switching of the first output level 40 Output level 2 1 Bit Switching o...

Page 72: ...nication object is shown Level hold The controller holds the current level and the ventilation control is blocked due to further control as long the object has the value 1 send a certain level The controller sets the adjusted level and blocks the ventilation control due to further control as long the object has the value 1 As soon as the lock function is activated the behavior of the unlocking can...

Page 73: ...s a sticking protection Figure 35 Ventilation Control Sticking protection In order to protect the air ventilation in front of a seizing a stick protection can be enabled This function runs the ventilation briefly at the highest level when it was not moved for24 hours level 0 7 1 7 Priority The priority can call a certain state Figure 36 Ventilation Control Priority At activating the polarity value...

Page 74: ...witch binary coded The step switch binary coded has the same functionality as the normal step switch described in 7 1 Step switch bit coded Only the output stage is sent binary Here the object 39 is the Bit 0 the object 40 the Bit 1 and the object 41 the Bit The following table shows the binary coded switching normal step switch binary value step switch binary coded Level 0 000 Object 39 40 41 0 L...

Page 75: ...n This behavior becomes also clear from the communication objects Number Name Length Usage 39 Level 1 1 Bit Switching level 1 40 Level 1 2 1 Bit Switching level 1 2 41 Level 1 2 3 1 Bit Switching level 1 2 3 42 Level 1 2 3 4 1 Bit Switching level 1 2 3 4 Table 60 Communication objects step switch simply 7 4 Step switch as Byte The tep s it h as B te o tai s of a stead output alue Up to le els a e ...

Page 76: ...for the minimum maximum value for the day night operation are priorities and can limit the settings for the output The following table shows the communication object for the step switch as Byte Number Name Length Usage 44 Control value 1 Byte Control value for an actuator Table 61 Communication object Step switch as Byte All other features are identical to those described under 7 1 Step switch bit...

Page 77: ...ould dim down Shutter function A B Up Down Down Up Defines which channel should drive the shutter a down and which up Switch function A B On Off Off On Defines which channel should switch off and which on Table 62 Buttons grouped By choosing channels as grouped two channels become one common function The grouped function is called dual surface like dual surface dimming and dual surface shutter In ...

Page 78: ...nction Figure 39 Buttons grouped dimming The following table shows the communication objects for this setting Number Name Length Usage 61 Dimming On Off 1 Bit Switching function of the dimming process action for a short keystroke 62 Dimming 4 Bit Dimming function action for a long keystroke 63 Status dimming value 1 Byte Status from the dimming actuator must be connected with the state of the dimm...

Page 79: ...ual Glass Room Temp Contr SCN RT1Gx 01 MDT technologies GmbH 51766 Engelskirchen Papiermühle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 79 The following diagram shows the dual surface dimming function ...

Page 80: ...uped Shutter Number Name Length Usage 61 Shutter Down Up 1 bit Driving function for the shutter function 62 Stop Slats Open Close 1 bit Stop function Slat adjustment 63 Status absolute position 1 Byte Status for the current position must be connected with the state of the shutter actuator for showing the right state on the display Table 64 Communication objects Shutter grouped The pa a ete shutte ...

Page 81: ...ns grouped Switching Simple functions like an alternating circuit can be programmed easily by using the grouped switch function The 1 bit communication object sends in dependence of the parameterization a 0 or a 1 signal for the first button and the inverted signal for the second channel So you can chose which channel should switch off and which should switch on The following chart shows the corre...

Page 82: ...e 66 Switch on key press The sub fu tio s it h push o s it h elease se ds o l a sig al at the adjusted a tio You can parameterize whether a 0 signal or a 1 signal should be sent There is no inverted signal at subsiding the edge This function always sends only one adjusted signal The following diagram shows this sub function for switch by push As soon as the state changes from 0 to 1 the push butto...

Page 83: ...ey press For sending always the right signal the switching function must get a notification of the actuator hi h should e s it hed Fo getti g this otifi atio the o je t alue fo toggle ust e connected with the state of the actuator 8 2 1 3 Send value on key press The following figure sho s the fu tio e d alue o ke p ess Figure 42 Send value on key press The pa a ete Value fo ke ope atio defi es the...

Page 84: ...ment Subfunction no save save Saving function can be selected via a long key stroke Scene number 1 64 1 Scene number must be identical with the one in the actuator Table 71 Scene function The following table shows the available communication objects Number Name Length Usage 63 Scene 1 Byte calls the adjusted scene Table 72 Communication object scene function The scene function calls scenes which w...

Page 85: ... 4 0x03 3 0x83 131 5 0x04 4 0x84 132 6 0x05 5 0x85 133 7 0x06 6 0x86 134 8 0x07 7 0x87 135 9 0x08 8 0x88 136 10 0x09 9 0x89 137 11 0x0A 10 0x8A 138 12 0x0B 11 0x8B 139 13 0x0C 12 0x8C 140 14 0x0D 13 0x8D 141 15 0x0E 14 0x8E 142 16 0x0F 15 0x8F 143 17 0x10 16 0x90 144 18 0x11 17 0x91 145 19 0x12 18 0x92 146 20 0x13 19 0x93 147 21 0x14 20 0x94 148 22 0x15 21 0x95 149 23 0x16 22 0x96 150 24 0x17 23 0...

Page 86: ...eter switch short long The table shows the available settings for this function ETS text Dynamic range default value comment Value for short key Object 1 On Off Toggle Send value Nothing Action for a short keystroke Value for long key Object 2 On Off Toggle Send value Nothing Action for a long keystroke Table 74 Parameter switch short long The table shows the communication objects for this functio...

Page 87: ...ed which can be connected in any way By activating the sub fu tio toggle a additio al o u i atio o je t appea s alled alue fo toggli g This o je t is a status o je t for the push button and must be connected to the status object of the actuator have a look at 4 5 1 Toggle The following diagram shows the behavior of this parameter Both objects push button and push button long were set to toggle The...

Page 88: ...x 49 2263 4588 knx mdt de www mdt de 88 The following diagram shows a further application example for this parameter In this example the object for a long keystroke switches the channel A of a switch actuator on A short keystroke switches the channel off The three communication objects were connected in only one group address ...

Page 89: ...tio Toggle heati g ooli g s it hes et ee heati g a d ooli g The fu tio o ks like a normal switching function but its representation in the display is optimized for heating cooling switchover The following table shows the communication objects for this function Number Name Length Usage 61 Toggle Heating Cooling 1 Bit Switching between heating and cooling 62 Value for toggle 1 Bit Status object shou...

Page 90: ...ead zone 51 Figure 19 Example dead zone 52 Figure 20 Settings control value 53 Figure 21 Control value 53 Figure 22 PI control continuous 54 Figure 23 PI control switching PWM 57 Figure 24 2 step control switching 59 Figure 25 Direction of controller 61 Figure 26 Additional level 61 Figure 27 Combination of basic and additional level 63 Figure 28 Heating Cooling 64 Figure 29 2 Pipe system 65 Figur...

Page 91: ...ages 36 Table 19 Communication objects alarm 37 Table 20 Communication objects messages 37 Table 21 Setting controller type 38 Table 22 Operating modes setpoints 39 Table 23 Communication object operating mode comfort 40 Table 24 Communication object operating mode night 40 Table 25 Communication object operating mode frost heat protection 40 Table 26 Parameter priority 41 Table 27 Example switcho...

Page 92: ...tep switch binary coded 74 Table 60 Communication objects step switch simply 75 Table 61 Communication object Step switch as Byte 76 Table 62 Buttons grouped 77 Table 63 Communication objects buttons grouped dimming function 78 Table 64 Communication objects Shutter grouped 80 Table 65 Communication object grouped switching 81 Table 66 Switch on key press 82 Table 67 Communication object Buttons s...

Page 93: ...an 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 10 2 Routine disposal Do not throw the waste equipment in the household rubbish The device contains electrical devices which must be disposed as electronic scrap The casing contains of recyclable synthetic material 10 3 Assemblage Risk for life ...

Page 94: ...NX bus can be displayed The MDT Glass Room Temperature Controller is a lush mounted device for ixed installations in dry rooms For project design and commissioning of the MDT Glass Room Temperature Controller it is recommended to use the ETS3f ETS4 or later Please download the application software at www mdt de Downloads html Production in Germany certiied according to ISO 9001 Large LCD Display w...

Page 95: ... 8mm Ø solid core 0 8mm Ø solid core Power supply KNX bus KNX bus Power consumption KNX bus typ 0 25W 0 25W Operating temperature range 10 to 50 C 10 to 50 C Enclosure IP 20 IP 20 Dimensions W x H x D 92mm x 92mm x 28mm 92mm x 92mm x 28mm Recommended mounting height 1 6m 1 6m MDT technologies GmbH 51766 Engelskirchen Papiermühle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de Stand 0314 D...

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