Siemens RDU340 Series, Basic Documentation

Page 1: ...s Flush mounted room temperature controllers for VAV CAV applications with LCD RDU340 Basic Documentation Edition 3 0 CE1P3078en 2014 11 03 Building Technologies ...

Page 2: ...2 32 Siemens Basic Documentation CE1P3078 en Building Technologies 2014 11 03 ...

Page 3: ... Ordering 7 3 Use 7 4 Functions 8 4 1 Temperature control 8 4 2 Operating modes 9 4 3 Setpoints 10 4 4 Applications 11 4 5 Additional features 12 4 6 Control sequences 14 4 6 1 Single duct 14 4 6 2 Single duct with electrical heater 16 4 7 Control output 17 4 8 Multifunctional input 18 4 9 Error handling 19 4 10 DIP switches 19 4 11 Control parameters 20 5 Handling 23 5 1 Mounting and installation...

Page 4: ...press permission of Siemens and may be passed only to authorized persons or companies with the required technical knowledge 1 3 2 Quality assurance These documents have been prepared with great care The contents of all documents are checked at regular intervals Any corrections necessary are included in subsequent versions Documents are automatically amended as a consequence of modifications and co...

Page 5: ... 2 2 Features Maintain room temperature via built in temperature sensor external room temperature return air temperature sensor Automatic or manual changeover between heating and cooling mode Select applications via DIP switches Select operating mode via the operating mode button on the controller Display current room temperature or setpoint in C and or F Minimum and maximum setpoint limitation Ke...

Page 6: ...all valve 2 5 mm SSP61 4864 Electrical actuator DC 0 10V for small valves 5 5 mm SSB61 4891 Electrical actuator DC 0 10 V for CombiValves VPI45 SSD61 4861 Electromotoric actuator DC 0 10V for valves 5 5 mm SQS65 4573 Electrothermal actuator AC 24 V NC DC 0 10 V 2 m for radiator valves and small valve 2 5 mm STA63 4884 Electrothermal actuator AC 24 V NO DC 0 10 V 2 m for radiator valves and small v...

Page 7: ...product number and name E g RDU340 room temperature controller Order valve actuators separately 3 Use Control of the room temperature in individual rooms of ventilation or air conditioning plants that are Heated or cooled by single duct Heated and cooled by single duct with auxiliary electrical heater The RDU340 is suitable for use with VAV systems in connection with the VAV compact controllers ty...

Page 8: ... via parameters P30 and P31 The integral action time for continuous PI control is 5 minutes adjustable via parameter P35 The display shows the acquired room temperature or the setpoint for the current operating mode selectable via parameter P06 The factory setting displays the current room temperature Use parameter P04 to display the room temperature or setpoint in F rather than C as needed If the...

Page 9: ...ins the setpoint which can be adjusted via the buttons Energy Saving mode helps save energy Select it by pressing the operating mode button if parameter P02 is set accordingly or if the external operating mode switchover contact is active e g window contact If the external operating mode switchover contact is active user operations are ineffective and OFF is displayed Control will then be accordin...

Page 10: ... 25 C Heating setpoint Cooling setpoint dead zone P09 P10 Cooling settable 25 40 C Heating settable 5 21 C Setpoint adjustable 25 40 C Heating setpoint Cooling setpoint dead zone but max limited by P10 If the Temporary setpoint function is enabled via parameter P69 the setpoint adjusted via the buttons is set back to the Comfort basic setpoint when the operating mode changes The factory setting fo...

Page 11: ...gle duct heating or cooling Modulating DC 0 10 V output signal inverted 1 ON 2 Y10 M V B1 B2 Single duct with electrical heater cooling and heating with auxiliary heater Modulating DC 0 10 V output signal normal Note on off electrical heater 1 ON 2 Single duct with electrical heater cooling and heating with auxiliary heater DC 0 10 V output signal inverted Note on off electrical heater 1 ON 2 Y10 ...

Page 12: ...s the room temperature via built in sensor external room temperature sensor QAA32 or external return air temperature sensor QAH11 1 connected to multifunctional input X1 or X2 Inputs X1 or X2 need to be commissioned accordingly See section 4 8 Multi functional input Dewpoint monitoring is essential to prevent condensation on the chilled ceiling and help avoid associated damage to the building This...

Page 13: ...oor temperature sensor connected to multifunctional input X1 acquires the floor temperature If the floor temperature exceeds the parameterized limit parameter P51 the heating valve is fully closed until the floor temperature drops to a level 2 K below the parameterized limit This function is factory set to OFF disabled Input X1 or X2 must be commissioned accordingly P38 1 See section 4 8 Multifunc...

Page 14: ...de Manually select heating or cooling mode Automatic heating cooling changeover via external water temperature sensor or remote switch Single duct ü ü ü ü In application Single duct with el heater the controller operates in heating AND cooling mode In single duct applications the controller controls an actuator valve damper VAV system etc in heating cooling mode with changeover automatic or manual...

Page 15: ...tions 2014 11 03 T C Room temperature w Room temperature setpoint Y10 Control command Valve XpH Proportional band Heating XpC Proportional band Cooling Vmin Min limitation for output Vmax Max limitation for output The diagrams show the PI controller s proportional part only Note ...

Page 16: ...rameter Maximum heating setpoint P10 Remote enabling disabling of the electrical heater is possible via digital input X1 X2 for tariff regulations energy saving etc Input X1 or X2 must be commissioned accordingly See section 4 9 Multifunctional input The diagram below shows the control sequence for continuous PI control Cooling and heating with electric heater TR C Room temperature Vmin Min limita...

Page 17: ... signal via output Y10 The electrical heater receives an ON command via the auxiliary heating control output Y21 1 When the acquired room temperature is below setpoint for electric heater 2 When the electrical heater has been switched off for more than 1 minute The OFF command for the electrical heater is output 1 When the acquired room temperature is above the setpoint electric heater 2 When the ...

Page 18: ...tch over the operating mode to Energy Saving If the operating mode switchover contact is active user operations are ineffective and OFF is displayed DI 4 Dewpoint monitor Digital input for a dewpoint sensor to detect condensation Cooling is stopped if condensation occurs DI 5 Enable electrical heater Digital input to enable disable the electrical heater via remote control DI 6 Alarm Digital input ...

Page 19: ...ll other cases the control output is de energized The controller resumes Comfort mode after the temperature returns to within the measuring range 4 10 DIP switches Use the DIP switches on the inner side of the front panel to commission the basic controller applications prior to snapping it to the base DIP switch number 1 2 Application Single duct factory setting OFF n a Single duct electrical heat...

Page 20: ...controller to Standby 2 Press buttons and simultaneously for 3 seconds Release and press button again for 6 seconds within 2 seconds The display shows P01 and service 3 Select the required parameter by repeatedly pressing buttons and 4 When you press buttons and simultaneously the current value of the selected parameter starts to flash which can be changed by repeatedly pressing buttons or 5 When ...

Page 21: ...mp in C and F ü P08 Comfort basic setpoint 21 C 5 40 C ü P09 Minimum setpoint limitation for Comfort WminComf 5 C 5 40 C ü P10 Maximum setpoint limitation for Comfort WmaxComf 35 C 5 40 C ü P11 Heating setpoint for Energy Saving WheatEco 15 C OFF 5 C WcoolEco ü P12 Cooling setpoint for Energy Saving WcoolEco 30 C OFF WheatEco 40 C ü P14 Key lock Press the operating mode button for 7 seconds to ena...

Page 22: ...Normally open 1 Normally closed ü P40 X2 functionality 2 H C c o Same as P38 ü P41 Operating action for X2 if digital input 0 N O 0 Normally open 1 Normally closed ü P51 Flow temp limit floor heating OFF OFF 10 50 C ü P58 no function ON ü P63 Minimum output limitation air flow signal 0 10V 0 0 100 ü P64 Maximum output limitation air flow signal 0 10V 100 0 100 ü P65 Heating setpoint for Standby Wh...

Page 23: ...bles of SELV inputs X1 M X2 M if the conduit box carries AC 230 V mains voltage Inputs X1 M or X2 M of different units e g summer winter switch may be connected in parallel with an external switch Consider overall maximum contact sensing current for switch rating No metal conduits No cables provided with a metal shield Disconnect from supply before opening the cover Set the controller application ...

Page 24: ... save energy 5 2 Operating Instructions See the operating instructions B3076 enclosed with the controller 5 3 Disposal The devices are considered electronics devices for disposal in term of European Directive 2012 19 EU and may not be disposed of as domestic waste Dispose of the device via the channels provided for this purpose Comply with all local and currently applicable laws and regulations Se...

Page 25: ...or AHU For US installations use Class 2 rated power supplies For other installations use circuit breakers with rated current of no more than 10 A N1 Room temperature controller RDU340 V1 DC 0 10V actuator for heating or cooling S1 Operating mode switch over contact e g key card B2 Heat cool changeover sensor Application Single duct with electrical heater in VAV CAV Heating and cooling with electri...

Page 26: ...it box with 60 3 mm fixing centers Slide the front panel in the mounting base and snap on 1 Operating mode selector Standby 2 Adjust setpoint and control parameters 1 Operating mode Standby protected mode Comfort mode Energy Saving mode 2 Display room temperature setpoints and control parameters Symbol used to display the current room temperature 3 Heating cooling mode Cooling mode Heating mode El...

Page 27: ...27 32 Siemens RDU340 Basic Documentation CE1P3078en Building Technologies Mechanical design 2014 11 03 7 1 Dimensions Dimensions in mm ...

Page 28: ...rature sensor input Type Digital input Operating action Contact sensing Insulation against mains voltage SELV NTC 3 kW at 25 C Selectable N O N C SELV DC 0 5 V max 5 mA 4 kV reinforced insulation Function input External temperature sensor heating cooling changeover sensor operating mode switchover contact dewpoint monitor contact enable electrical heater contact alarm contact Selectable Switching ...

Page 29: ...matic conditions Temperature Humidity As per IEC 721 3 1 Class 1K3 25 60 C 95 r h EU Conformity CE CE1T3076_1 RCM Conformity CE1T3076_1en_C1 Protective class II as per EN 60730 1 Pollution class Normal Degree of protection of housing IP 30 to EN 60529 The product environmental declarations CE1E3076_1 contain data on environmentally compatible product design and assessments RoHS compliance material...

Page 30: ...ure sensor 12 F Floor temperature limitation function 13 H Heat cool changeover 18 Heating mode 14 Housing color 5 I Integral action time 8 K Key lock 12 M Manually select heating or cooling mode 14 Min Max air flow 12 Modulating output 14 Mounting and installation 23 Multifunctional inputs 18 O On off control output signals 17 Operating mode button 9 Operating mode input 9 Operating mode switchov...

Page 31: ...31 32 Siemens Basic Documentation CE1P3076 en Building Technologies 2014 11 03 ...

Page 32: ...Building Technologies 2014 11 03 Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 CH 6301 Zug Tel 41 41 724 24 24 Fax 41 41 724 35 22 www siemens com sbt 2008 2014 Siemens Switzerland Ltd Subject to change ...