MDT Technologies SCN-RT2UP.01 Manual Download Page 52

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Technical Manual Temperature Controller

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

Summary of Contents for SCN-RT2UP.01

Page 1: ...MDT technologies GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 1 3 2015 Manual MDT Temperature Controller SCN RT2UP 01 SCN RT4UP 01 SCN RT6REG 01 6AP 01...

Page 2: ...cts 14 4 Reference ETS Parameter 16 4 1 General Settings 16 4 2 Temperature measurement 17 4 3 Alarm Messages 20 4 4 Controller general 22 4 4 1 Controller type 22 4 4 2 Operating modes Setpoints 23 4...

Page 3: ...l 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 3 6 Attachment 51 6 1 Statutory requirements 51 6 2 Routine disposal 51 6 3 Assemblage 51 6 4 Controller 52 6 4 1 2 Step control 52 6 4 2 PI contro...

Page 4: ...01 standard version SCN PTAN3 01 strap on installation SCN PTDE3 01 ceiling installation SCN RT2UP 01 2 fold Temperature controller sensor flush mounted o Controller type 2 Step PI continuous PI swit...

Page 5: ...MDT technologies 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 SCN RT6REG 01 Figure 2...

Page 6: ...of the 6 channels available and individual parameterize able Temperature measurement The settings for the measurement for the temperature can be made at this menu Settings for the min max values and t...

Page 7: ...used type e g SCN RT6REG 01 2 6 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 inter...

Page 8: ...munication object is always shown and sends according to the settings its current value or can only be read 1 Channel 1 Higher message value DPT 1 001 send Controller sends state Visu Display Diag ost...

Page 9: ...to 10 external sensor 6 Channel 1 Setpoint comfort DPT 9 001 receive Controller receives new setpoint Visu Control keys Central operation unit Communication object is always shown when the controller...

Page 10: ...hen the controller is set to cooling 2 Pipe system DPT depends to the controller settings 10 Channel 1 Mode comfort DPT 1 001 receive Controller switches operating mode Visu Display Control keys Centr...

Page 11: ...ing request DPT 1 001 send Controller sends heating request Actuator for switching the heati g pu p Can be activated in the parameters if the controller is set to heating 16 Channel 1 Cooling request...

Page 12: ...eset setpoint value DPT 1 001 receive Controller resets the setpoints to the parameter settings Visu Display Control keys Central operation unit Communication object is always shown when the controlle...

Page 13: ...mmunication is alway shown when the controller is active Via the parameter e d status o o je t Mode sele tio the se di g of this object can be activated and directly evaluated from visualizations or h...

Page 14: ...nel 1 Control value heating 1 Byte Low X X X 8 Channel 1 Control value heating cooling 1 Bit Low X X X 8 Channel 1 Control value heating cooling 1 Byte Low X X X 9 Channel 1 Control value cooling 1 Bi...

Page 15: ...articular 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...

Page 16: ...setpoint for the operating mode frost protection Setpoint heat protection for all channels 25 C 40 C 35 C Setting of the setpoint for the operating mode heat protection Flow temperature 15 C 60 C 35 C...

Page 17: ...mment Send actual value after change of not available at SCN RT6REG disable 0 1K 2 0K Sending condition for the actual temperature value Send actual temperature cyclically not available at SCN RT6REG...

Page 18: ...ed 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 wi...

Page 19: ...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 reset of the min max values The chart shows the relevant communication...

Page 20: ...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 t...

Page 21: ...larm 1 Bit send heatalarm Table 9 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...

Page 22: ...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 Ta...

Page 23: ...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 comfo...

Page 24: ...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 setpoin...

Page 25: ...e night mode will only be active when the comfort mode is switched off now the controller changes automatically to the night mode 4 4 2 6 Operating mode changeover There are 2 possibilities for the ch...

Page 26: ...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...

Page 27: ...t last If you switched the operating mode last via 1 Bit the controller will react to the changeover by 1 Bit If you switched the operating mode last via 1 Byte the controller will react to the change...

Page 28: ...nt Standby with parameterized set point Hold old state and set point Adjustment which operating mode shall be switched on after a bus power return Table 23 Operating mode after reset This parameter de...

Page 29: ...a 1 increases the setpoint by the adjusted step range sending a 0 decreases the setpoint by the adjusted step range Step range 0 1K 1K 0 5K Adjustment of the step range for the setpoint offset via 1 B...

Page 30: ...e setpoint can only be moved manual in the limits of 18 C and 24 C The manual setpoint value offset is also possible via a 1 Bit object In this case normal 1 Bit o a ds a e se t to the Bit o je t Ma u...

Page 31: ...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 sta...

Page 32: ...ects 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...

Page 33: ...ontroller 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...

Page 34: ...he 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 individual...

Page 35: ...This allows you to limit the heating temperature which is needed in some situations If for example an underfloor heating must not heat above a certain value to protect the flooring the heating tempera...

Page 36: ...5 2 PI control continuous PI control switching PWM 4 5 3 PI control switching PWM 2 step control switching 4 5 4 2 step control switching The following chart shows the relevant communication objects N...

Page 37: ...ol 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 c...

Page 38: ...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 g...

Page 39: ...auses a slow approach to this value To note is that a reset time which is adjusted too small can cause across swinging In principle you can say each carrier the system each bigger the reset time The f...

Page 40: ...le 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 contr...

Page 41: ...trol 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 2...

Page 42: ...ching on point Send control value cyclic disable 1min 60min Adjustment if the control value should be sent cyclic activation is recommended to avoid wrong behavior at loss of telegrams Table 37 2 step...

Page 43: ...t 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 a...

Page 44: ...ted for all control values PI control continuous 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...

Page 45: ...Pipe system 4 Pipe system Setting for combined or divided heating and cooling circuits Heating cooling switch over automatically via object Selection between manual and automatic switch over Table 38...

Page 46: ...control value is available Before changing between heating and cooling a switchover must occur The control value can also have only one controller PI continuous PI switching 2 Step control Also the d...

Page 47: ...y 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 b...

Page 48: ...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 switch...

Page 49: ...ages 20 Figure 7 Setting controller type 22 Figure 8 Operating modes setpoints 23 Figure 9 Priority of the operating modes 25 Figure 10 Operating mode after reset 28 Figure 11 Setpoint offset 29 Figur...

Page 50: ...ction 24 Table 16 Priority of the operating modes 25 Table 17 Example changeover of the operating modes via 1 Bit 25 Table 18 Hex Values for operating modes 26 Table 19 Example operating mode changeov...

Page 51: ...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...

Page 52: ...irchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 52 6 4 Controller Three different controller types can be chosen for the control value These controller types are described...

Page 53: ...Technical Manual Temperature Controller 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 2 PI control continuous...

Page 54: ...Technical Manual Temperature Controller MDT technologies GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 54 6 4 3 PI control switching PWM...

Page 55: ...Technical Manual Temperature Controller MDT technologies GmbH 51766 Engelskirchen Papierm hle 1 Tel 49 2263 880 Fax 49 2263 4588 knx mdt de www mdt de 55 6 5 Direction of controller 6 6 Datasheet...

Page 56: ...ETS3 4 The thermostat stores the minimum and maximum temperature and releases an alarm telegram if the temperature differs from the programmed limit values The temperature of the frost protection is...

Page 57: ...range 20 bis 100 C 20 bis 100 C 20 bis 100 C Encosure IP 20 IP 20 IP 20 IP 20 Dimensions MDRC Space Units 2SU Dimensions W x H x D 115mm x 64mm x 40mm 41mm x 41mm x 12mm 41mm x 41mm x 12mm Examplary c...

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