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NRT407 manual

Part II

Installation

19

Wiring for NRT407F901

Figure 8. Connection diagrams for model for CO

2

control

Terminal

Designation

Operation

10

G

Supply voltage 24 V AC

11

G0

Supply voltage 0 V

12-14

No function.

20

GDO

24 V AC out common for DO. Internally connected to terminal 10, G.

21

G0

0 V common for UO. Internally connected to terminal 11, G0.

22

UO3

Output for VAV or EC-fan.

For forced ventilation. 24 V AC output, max. 2.0 A. 24 V actuator is
connected between terminal 22 and terminal 20, GDO.

alternatively

For 0…10 V DC damper control/EC-fan. The damper actuator/EC-fan
0…10 V control signal terminal is connected to terminal 22 and its supply
terminals to terminals 10 and 11. Make sure that the reference pole G0 is
connected to the correct terminal on the actuator.

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Summary of Contents for NRT407

Page 1: ...SAUTER ITALIA SPA NRT407 ...

Page 2: ...or copied only in accordance with the terms of the license No part of this document may be reproduced or transmitted in any form in any fashion electronically or mechanically without the express written permission of SAUTER ITALIA SPA TRADEMARKS Windows Windows 2000 Windows XP Windows Vista Windows 7 Windows 8 and Windows Server 2003 are registered trademarks of Microsoft Corporation Some product ...

Page 3: ...I CONFIGURATION 23 CHAPTER 7 CONTROL MODES 24 CHAPTER 8 OPERATING MODES 32 CHAPTER 9 SETPOINT CALCULATION 37 CHAPTER 10 ACTUATORS 39 CHAPTER 11 FAN CONTROL 41 CHAPTER 12 SPECIAL FUNCTIONS 44 CHAPTER 13 INDICATIONS 46 CHAPTER 14 DISPLAY HANDLING 47 CHAPTER 15 MEMORY FUNCTION ON POWER FAILURE 53 PART IV SIGNALS 55 CHAPTER 16 MODBUS SIGNAL TYPES 56 CHAPTER 17 MODBUS SIGNALS 58 CHAPTER 18 BACNET SIGNA...

Page 4: ...PTER 1 ABOUT THE MANUAL 5 Terms 5 More information 5 CHAPTER 2 INTRODUCTION TO NRT407 6 NRT ZONE CONTROLLERS 6 NRT 407 7 Application examples 7 CHAPTER 3 MODELS 8 Design 9 CHAPTER 4 TECHNICAL DATA 10 Accessories for NRT407 12 ...

Page 5: ...Terms Term used in the manual FS Factory setting More information More information about NRT can be found in NRT tool Manual Manual of how to configure the controllers NRT Room Controllers Brochure for the NRT series The information is available for download on SAUTER ITALIA SPA s homepage www sauteritalia it ...

Page 6: ...Ts can be used either as stand alone units or integrated into a system with communication The controllers are connected to bus lines such as Modbus RTU or BACnet MS TP only models with display They can also be configured for a specific application with software NRT tool Design NRT has a modern design which enhances the indoor environment Applications The NRTs controllers have an appealing design a...

Page 7: ...l Control modes The controllers can be configured for different control modes control sequences Heating Heating or cooling via the change over function Heating Heating Heating Cooling Heating Cooling with VAV control and forced supply air function Heating Cooling with VAV control Cooling Cooling Cooling Heating Cooling VAV except NRT407F902 Heating Heating or Cooling via change over only available...

Page 8: ...s with spring return F902 models Like basic models models for fan control control analogue thermal and spring return actuators They also have a button fan switch for EC fan control on analogue output UO3 Models Display Occupancy button Fan control 3 point control Setpoint knob Hidden setpoint CO 2 input EC fan control AO follow cooling heating Control of a third sequence damper Basic models NRT407...

Page 9: ...NRT407 manual Part I Introduction 9 Design NRT407F902 NRT407F901 ...

Page 10: ...nly Functions as Modbus RTU Slave BACnet MS TP slave and master Modbus 8 bits 1 or 2 stop bits Odd even FS or no parity Galvanically isolated port No Memory Non volatile EEPROM All settings and configurations are preserved See also Chapter 15 Memory function on power failure Built in temperature sensor Type NTC linearised 15 kOhm Measuring range 0 50 C Accuracy 0 5 C at 15 30 C Models with display...

Page 11: ...or 0 100 C accuracy 0 2 C or AI2 0 10 V or DI see DI below CI Sauter condensation detector EGH102 DI Closing potential free contact connected to C in one end Outputs see Table 2 below for number and function for different models DO 24 V AC max 0 5 A UO DO 24 V AC max 2 0 A or AO 0 10 V DC max 5 mA C power output for DI only 24 V DC max 10mA short circuit protected ...

Page 12: ...actuator UO2 Cooling actuator alt Heating actuator AI1 Ext room sensor alt Change over AI2 CO2 alt Flow alt 0 10 V DI1 Occupancy sensor alt Window contact alt Change over DI2 CI Window contact alt Condensation detector alt Change over Table 2 Available connections and their functions for the NRT controllers The function for these outputs depends on the control mode setting see Chapter 7 Control mo...

Page 13: ...NRT407 manual Part I Introduction 13 ...

Page 14: ...STALLATION PREPARATIONS 15 DIFFERENT VERSIONS OF TERMINALS AND PINS 15 USING LABELS 15 CONFIGURATION 16 CALIBRATION 16 TROUBLESHOOTING 16 CHAPTER 6 INSTALLATION 17 MOUNTING 17 WIRING 17 Wiring for NRT407F901 19 Wiring for NRT407F902 21 ...

Page 15: ...Figure 2 New terminal type 1 1 mm pins Using labels On the back of the electronics cassette there is a set of labels which makes it easier to install large numbers of NRT controllers By using the labels as carriers of information for the installation engineer much time will be saved and you can keep wiring errors at a minimum Figure 3 Label on the back of the controller The three piece label can b...

Page 16: ...splay have DIP switches that should be set See the section DIP switches below The computer running NRT tool is connected to the cassette with a USB to RS485 converter The adapter is connected to terminals 42 A and 43 B Use a 24 V AC trafo for supply voltage of the electronics cassette on terminals 10 and 11 If you want to configure the unit it is normally better to do this before sending the casse...

Page 17: ...e the electronics when inserting the screwdriver into the slots Figure 4 Figure 5 The bottom plate with terminals has a number of fixing hole combinations Select suitable holes and screw the bottom plate onto the wall or connection box so that the arrows on the bottom plate point upwards Do not tighten the screws too hard With surface mounted cabling break out suitable holes from the marks in the ...

Page 18: ... NRT controller in each separate power supply loop with 24 V AC If the length of the loop exceeds 300 m a repeater is required See figure 6 Figure 6 The figure below shows the location of the terminals The connection diagrams and tables on the following pages show the wiring for basic models and models for fan control Figure 7 Bottom plate with terminals ...

Page 19: ... G 21 G0 0 V common for UO Internally connected to terminal 11 G0 22 UO3 Output for VAV or EC fan For forced ventilation 24 V AC output max 2 0 A 24 V actuator is connected between terminal 22 and terminal 20 GDO alternatively For 0 10 V DC damper control EC fan The damper actuator EC fan 0 10 V control signal terminal is connected to terminal 22 and its supply terminals to terminals 10 and 11 Mak...

Page 20: ...y For a 24 V AC thermal actuator max 2 0 A The thermal actuator is connected between terminals 24 and 20 GDO alternatively For a 24V AC actuator with spring return max 2 0 A The actuator is connected between terminals 24 and 20 This can be configured either through the display or through NRT tool 30 AI1 For an external room sensor PT1000 Measuring range 0 50 C The sensor is connected between termi...

Page 21: ...via change over For a 0 10 V DC valve actuator max 5 mA FS The valve actuator s 0 10 V control signal terminal is connected to terminal 23 and its supply terminals to terminals 10 and 11 Make sure that the reference pole G0 is connected to the correct terminal on the actuator alternatively For a 24 V AC thermal actuator max 2 0 A The thermal actuator is connected between terminals 23 and 20 GDO al...

Page 22: ...range 0 50 C The sensor is connected between terminals 30 and 41 AGnd 31 AI2 For a 0 10 V CO2 sensor alternatively Flow input alternatively 0 10 V input 32 DI1 Occupancy detector A potential free contact is connected between terminals 32 and 40 C Closed contact corresponds to occupancy alternatively Window contact DI A potential free contact is connected between terminals 33 and 40 C Closed contac...

Page 23: ... DIFFERENT OPERATING MODES 34 CHAPTER 9 SETPOINT CALCULATION 37 CHAPTER 10 ACTUATORS 39 CHAPTER 11 FAN CONTROL 41 CHAPTER 12 SPECIAL FUNCTIONS 44 CHANGE OVER FUNCTION 44 FORCED VENTILATION 44 CONDENSATION DETECTOR 44 FROST PROTECTION 45 HIGH LOW ROOM TEMPERATURE ALARM 45 CHAPTER 13 INDICATIONS 46 CHAPTER 14 DISPLAY HANDLING 47 DISPLAY INDICATIONS 47 PARAMETER MENU 48 CHAPTER 15 MEMORY FUNCTION ON ...

Page 24: ...output signal Cooling Cooling VAV damper EC fan Heating Cooling VAV except NRT407F902 Heating Cooling VAV damper EC fan Heating Heating or Cooling via change over only available in fan models Heating Cooling VAV damper EC fan Table 5 Control modes Not available in T models Only available in 3 models Heating In control mode Heating the unit is always a heating controller and controls according to t...

Page 25: ...l zone is the difference in temperature between the heating setpoint and the cooling setpoint When the room temperature exceeds this limit the controller becomes a cooling controller There is a hysteresis of 0 1 C when the controller changes from heating to cooling controller and vice versa When the controller is heating it regulates according to the basic heating setpoint plus the setpoint adjust...

Page 26: ...ing Cooling In control mode Cooling the unit is always a cooling controller and controls according to the basic cooling setpoint plus the setpoint adjustment Cooling Cooling Split output signal In control mode Cooling Cooling the controller always functions as a cooling controller and controls according to the basic cooling setpoint plus the setpoint adjustment The control signal is divided betwee...

Page 27: ...nt the outputs will always be 100 for Y2 and 0 for Y3 As an addition to the function described above it is possible to connect a CO2 sensor to RC C3DOC The output on Y3 will then be affected by either cooling demand or by the CO2 level rising too high The output from the CO2 function is linear between two user defined setpoints see figure below The variable for the min limit of the VAV damper is t...

Page 28: ...ge over For models offering fan functionality a function for control of a heating battery on UO1 in sequence with change over on UO2 is available When this has been performed the start sequence of UO1 UO2 is changed along with the limits for fan start The change over function will be used to switch between summer and winter mode UO2 will be used as a cooling actuator in summer mode and as a heatin...

Page 29: ...are set to VAV control the control mode is combined with a CO2 control function In control mode Heating Cooling with VAV control the CO2 concentration in the room will make the VAV damper cooling output UO2 open The function is linear and the damper works between the configured min flow FS 20 and 100 depending on the CO2 concentration in the room If the CO2 concentration drops below the configured...

Page 30: ... The function is intended to be used when the heater or cooler is located in the ventilation duct and the system is struggling to reach the setpoint When the cooling or heating output reaches 100 the controller will switch to control mode Bypass The controller will remain in forced ventilation throughout the set Bypass time FS 2h Three different alternatives can be selected for setting the functio...

Page 31: ... In general this function works in a way similar to the minimum limit for the cooling output However there is a difference between the minimum limit for the heating and cooling output as the minimum limit for the latter still remains active after the controller enters heating mode In addition the minimum limitation for the heating output functions in all control modes Features for NRT 0 10 V input...

Page 32: ...nterval with configurable min max temperatures FS min 15 C max 30 C For controllers with display the background lighting is not lit but the current room temperature or setpoint depending on the configuration is shown in the display OFF is also shown in the display Stand by Operating mode Stand by means that the room is in an energy save mode and is not used at the moment This can be during nights ...

Page 33: ...ls the room temperature in the same way as in operating mode Occupied The output for forced ventilation is also active After a configurable time FS 2 hours in Bypass the controller automatically returns to the preset operating mode Bypass is normally activated when the Occupancy button is pressed via an occupancy detector a central command or the CO2 level The operating mode is useful for example ...

Page 34: ...Standby or Occupied When the Occupancy button is held depressed for more than 5 seconds the controller will change its operating mode to Shutdown Off Unoccupied regardless of the present operating mode Via the display or NRT tool it is possible to configure which operating mode Off or Unoccupied should be activated upon Shutdown FS Unoccupied Shutdown If the Occupancy button is pressed for less th...

Page 35: ...ontroller changes operating mode to Bypass If you want to be able to enter the room temporarily without activating Presence to for example pick something up it is possible to configure a power up delay This means that Presence is not activated until the power up delay has expired The Presence delay can be set to a value between 0 and 60 minutes FS 0 min In Bypass on presence there is a switch off ...

Page 36: ...l change to Stand by regardless of what has been set in the central control NRTRemoteState When the controller is in Bypass and the Bypass time has run out the controller will change to the operating mode given by NRTRemoteState If NRTRemoteState equals 5 it will change to the preset operating mode If the controller is in Stand by and the central control is changed the controller will change to th...

Page 37: ...e frost protection setpoint FS 8 C regardless of the setpoint adjustment Unoccupied In operating mode Unoccupied it controls according to the heating setpoint FS 15 C if a control mode with heating has been set and the room temperature is lower than this setpoint If the room temperature is higher than the cooling setpoint FS 30 C and a control mode with cooling has been set the unit is a cooling c...

Page 38: ...he added adjustment is 1 5 C This means that the value 23 5 C will be shown in the display HEAT or COOL will flash depending on which of the setpoint values is the control setpoint when you enter the setpoint menu i e depending on which setpoint you are changing The adjustment is added to both the heating and cooling setpoints 2 The sum of the heating setpoint and the adjustment is shown in the di...

Page 39: ...utput times proportionally depending on the output signal demand to the actuator 3 point actuators For 3 point actuators increase decrease actuators T models two digital outputs are used for controlling one actuator one output to open the actuator and one to close it You can configure the run time in seconds for the different actuators FS 120 s The program calculates the position of the actuator 0...

Page 40: ...ntervals in hours FS 23 hours interval An opening signal is sent to the actuator for as long as the configured run time Then a closing signal corresponding to the length of the run time is sent and the exercise is finished On units with a display the exercise can be inactivated by setting parameters 36 and 37 to zero 0 ...

Page 41: ...I means that the speed of the fan in operating modes Stand by Occupied and Bypass is always the set speed In the other operating modes the fan is demand controlled Auto control In auto mode you can configure if the fan should be controlled by the heating output the cooling output or both the heating and cooling outputs When the selected output exceeds the start value that has been set for each spe...

Page 42: ...ffer an added function for the control of EC fans When this function is active Y3 will follow Y1 and Y2 respectively As for F models with fan control it is possible to select whether the fan will run in Heating or Cooling or in both Heating and Cooling This setting is made using the same parameter P50 as for other fan models The function is activated by setting UO3 to Control of EC fan P22 It may ...

Page 43: ...e fan button will control the EC fan output to preset speeds and then offer feedback to the user through the fan segment displayed This takes place in the same way as for other F models When the fan button is depressed it will step through the configured fan levels ...

Page 44: ...erence between Heating and Cooling change over are Change from Heating to Cooling 4K Change from Cooling to Heating 3K This setting may be changed using parameters number 9 and 10 Forced ventilation All NRT controllers have functionality for forced ventilation All controllers except NRT407F902 have a digital output for controlling a forcing damper to increase the airflow to the room This output is...

Page 45: ...h or too low The high room temperature alarm will trigger when the room temperature exceeds the configured high temp limit FS 40 C The low room temperature alarm will trigger when the room temperature falls below the configured low temp limit FS 15 C The alarms are implemented as points that trigger when the temperature either exceeds or falls below the limits and return as soon as the temperature...

Page 46: ...46 Part III Configuration NRT407 manual Chapter 13 Indications ...

Page 47: ...2 Figure 12 Indications in the display INCREASE button Occupancy button DECREASE button AUTO MAN Auto Man indication on the fan Occupancy indication Open window Fan Setpoint Changeable value Forced ventilation COOL HEAT Shows if the unit controls according to the heating or cooling setpoint SERVICE Is shown when parameters are set flashes when there is something wrong with the controller Fan speed...

Page 48: ... after the last parameter The parameter menu is exited by pressing the Occupancy button while in Exit Pressing on INCREASE goes to the first parameter and pressing on DECREASE goes to the last parameter Parameters The following parameters can be changed in the parameter menu FS Factory setting Parameter number Description FS 1 Basic heating setpoint 22 C 2 Basic cooling setpoint 24 C 3 Neutral zon...

Page 49: ... Ordinary analogue output 5 None 6 Control of EC fan 1 24 Y3 output in manual mode only if Y3 is configured as an analogue output not available for NRT407F902 0 28 State output signal range for Y3 actuators 0 0 10 V 1 2 10 V 2 10 2 V 3 10 0 V 0 29 State output signal range for heating actuators 0 0 10 V 1 2 10 V 2 10 2 V 3 10 0 V 0 30 State output signal range for cooling actuators 0 0 10 V 1 2 10...

Page 50: ...al control 5 48 Min flow at cool output when control mode Heating Cooling with VAV control is selected Min flow at Y3 output when control mode Heating Cooling VAV is selected 20 49 Max flow on Y3 output when control mode Heating Cooling VAV is selected and in heating mode 0 50 Configuration of fan control 0 No control 1 Fan is controlled by heating demand 2 Fan is controlled by cooling demand 3 Fa...

Page 51: ...s 73 Selection of heating output function NO NC 0 NC Normally closed 1 NO Normally opened 0 74 Setpoint display at setpoint adjustment 0 The offset is shown in the display 1 The active setpoint offset is shown in the display Heat or Cool is shown depending on whether heat or cool is active when entering the menu 2 Heat setpoint offset is shown in the display 3 Cooling setpoint offset is shown in t...

Page 52: ...his parameter defines the protocol to be used 0 Modbus 1 BACnet MS TP 0 115 BACnet MS TP MAC address 0 127 master address 128 254 slave address Factory set 00 99 116 Low 4 figures of the BACnet device ID 0 9999 Factory set 117 High 3 figures of the device ID Factory set 118 BACnet MS TP Max master 127 119 COMbus speed 0 9600 1 19200 2 38400 3 76800 only BACnet 0 120 COMbus reset When activated 1 i...

Page 53: ...hat change often are not stored Values can be saved up to approximately 100 000 times in the non volatile memory Therefore changed values should not systematically and very often be sent to the controller via network communication Normal changes may still be sent via the network for example if the operating mode is changed a few times per day Example Activation of Bypass is not stored in the memor...

Page 54: ......

Page 55: ...58 DISCRETE INPUTS 58 COIL STATUS REGISTER 59 INPUT REGISTER 59 HOLDING REGISTER 61 CHAPTER 18 BACNET SIGNAL TYPES 68 CHAPTER 19 BACNET SIGNALS 69 ANALOGUE INPUTS 69 ANALOGUE VALUES 69 BINARY INPUTS 70 BINARY VALUES 71 LOOP 71 MULTISTATE INPUTS 71 MULTISTATE VALUES 72 DEVICE 72 ...

Page 56: ...be RS485 RS422 or RS232 RS485 contra RS422 RS485 and RS422 are the electric part of the protocol i e the physical layer RS485 has two connections A and B Often there is also a protective earth RS485 units are connected A A and B B You may have to shift A and B in order for Modbus to work RS485 is so called half duplex communication Communication can only go in one direction at a time i e the maste...

Page 57: ... the master is set and then give the Controller the same settings Parity can be set to odd even FS or none If none is chosen two stop bits will automatically be used If odd or even is chosen only one stop bit is used or there will be too many bits altogether 1 start bit 8 data bits 1 parity bit and 1 stop bit give a total of 11 bits which is the maximum amount ...

Page 58: ...NRTDIChangeOver L 2 16 Indicate change over from digital input RC_Actual_L NRTFanSpeed1 L 2 17 Indicate fan speed 1 RC_Actual_L NRTFanSpeed2 L 2 18 Indicate fan speed 2 RC_Actual_L NRTFanSpeed3 L 2 19 Indicate fan speed 3 RC_Actual_L NRTForcedventilation L 2 20 Indicate forced ventilation RC_Actual_L NRTCVHeatPulsProp L 2 21 Indicate pulse prop heating RC_Actual_L NRTCVCoolPulsProp L 2 22 Indicate...

Page 59: ...UDi1NC L 1 7 0 State NO NC universal input 1 0 NO Normally open 1 NC Normally closed RC_Setp_L NRTCVHeatPulsPropNC L 1 8 0 Selection of heating output function NO NC 0 NO Normally open 1 NC Normally closed Not used in this model L 1 9 13 0 RC_Setp_L NRTMinFanSpeed L 1 14 0 The fan will never stop 0 Off 1 On RC_Setp_L NRTCVCoolPulsPropNC L 1 15 0 Selection of cooling output functions NO NC 0 NO Nor...

Page 60: ...r temperature RC_Actual_R NRTAnaIn1 R 4 15 Value of analogue input 1 RC_Actual_R NRTUAnaIn1 R 4 16 Value of universal analogue input 1 RC_Actual_R NRTUAnaOut1 R 4 17 Value of universal analogue output 1 RC_Actual_R NRTUAnaOut2 R 4 18 Value of universal analogue output 2 RC_Actual_R NRTSetPAdjustment R 4 19 Setpoint adjustment from internal device RC_Actual_R NRTPIDSetP R 4 20 The controller setpoi...

Page 61: ...rolled by cooling demand 3 Fan is controlled by both heating and cooling demand RC_Setp_X NRTFanSpeed1Start X 3 7 5 Start signal in for fan speed 1 on heating or cooling control RC_Setp_X NRTFanSpeed2Start X 3 8 60 Start signal in for fan speed 2 RC_Setp_X NRTFanSpeed3Start X 3 9 100 Start signal in for fan speed 3 RC_Setp_X NRTFanSpeedHyst X 3 10 5 Hysteresis for start stop of fans RC_Setp_X NRTF...

Page 62: ...Cooling with VAV control and forced supply air function 5 Heating Cooling with VAV control 6 Cooling 7 Cooling Cooling 8 Heating Cooling VAV except NRT407F902 9 Heating Heating or Cooling via change over only available in models with fan control RC_Setp_X NRTCVHeatType X 3 19 0 State output signal range for Heating actuators 0 0 10 V 1 2 10 V 2 10 2 V 3 10 0 V RC_Setp_X NRTCVCoolType X 3 20 0 Stat...

Page 63: ...tion 4 Change over sensor NRT407F901 F902 Not used in this model X 3 29 0 RC_Setp_X NRTUi1 X 3 30 2 State connected sensor on UI1 All models except NRT407F901 F902 0 None 1 Change over digital 2 Change over analogue Not used in this model X 3 31 34 RC_Setp_X NRTDo1 X 3 35 1 F902 models 4 other models 1 Fan speed 1 4 Forced ventilation RC_Setp_X NRTDo2 only used for F902 X 3 36 2 F902 models 7 T mo...

Page 64: ...timeout for character t1 5 in ms Should be 1 5 times a character i e at least 2 ms RC_Setp_X NRTModbusAnswerDelay X 3 47 5 ms Answer delay in Modbus t3 5 in ms Should be 3 5 times a character i e at least 5 ms RC_Setp_X NRTDispBacklightLO X 3 48 10 10 Backlight low RC_Setp_X NRTDispBacklightHi X 3 49 30 30 Backlight high RC_Setp_X NRTDispContrast X 3 50 15 15 Display contrast RC_Setp_X NRTDisplayV...

Page 65: ...NRTForcedVentControlMode X 3 54 0 Forced ventilation control function 0 Not active 1 Forced ventilation at 100 output of heat or cool 2 Forced ventilation at 100 cool output RC_Setp_X NRTUnitDIPresenceState I 3 55 4 Operating mode at presence detection DI1 3 Occupied 4 Bypass RC_Setp_I NRTBypassTime I 3 56 120 min Time in Bypass mode RC_Setp_I NRTPresenceOffTime I 3 57 10 min Disconnect timer with...

Page 66: ... 4K The difference between the temperature in the room and the media temperature for change over to heating RC_Setp_R NRTAi1Comp R 3 82 0 C Temperature compensation on AI1 RC_Setp_R NRTUi1Comp R 3 83 0 C Temperature compensation on UI1 RC_Setp_R NRTInternalTempComp R 3 84 0 C Temperature compensation on internal room sensor RC_Setp_R NRTTempFilterFactor R 3 85 0 2 Filter factor for analogue temper...

Page 67: ... NRTCO2LimitLow NRT407F901 F902 R 3 147 600ppm Min limit for VAV damper at CO2 control NRT407F901 F902 RC_Setp_R NRTCO2LimitHigh NRT407F901 F902 R 3 148 800ppm Max limit for VAV damper at CO2 control NRT407F901 F902 RC_SetpExt_R NRTFlowFilterFactor R 3 149 0 Flow filter factor RC_SetpExt_R NRTFlow_0V NRT407F901 F902 R 3 277 0 l s Flow at 0 V input in AI2 l s RC_SetpExt_R NRTFlow_10V NRT407F901 F90...

Page 68: ...mode Both MS TP master and slave are supported The mode is controlled by setting the MAC address If 127 master mode is selected A MAC address of 127 enables slave Object Type The BACnet types of the signals types in the list below Analogue inputs Analogue values Binary inputs Binary values Loop Multistate inputs Multistate values Device Out_of_service The property out_of_service is not writable fo...

Page 69: ...stment Analog value 2 Setpoint adjustment from internal device C No RC_Actual_R NRTPIDSetP Analog value 3 Controller setpoint C No RC_Actual_R NRTPIDOutput Analog value 4 Controller output No RC_Actual_R NRTHeatOutput Analog value 5 Heat output No RC_Actual_R NRTCoolOutput Analog value 6 Cool output No RC_Setp_R NRTOccSetPHeat Analog value 7 Room base setpoint heating C Yes RC_Setp_R NRTOccSetPCoo...

Page 70: ...K Yes RC_Setp_R NRTThermostatHystCool Analog value 25 Hysteresis when On Off control and Cool control K Yes RC_Setp_R NRTMinHeat Analog value 26 Minimum heat output at Heat control Yes RC_Setp_R NRTMinECFanSpeed Analog value 27 Minimum speed for the EC fan Yes RC_Setp_R NRTMaxECFanSpeed Analog value 28 Maximum speed for the EC fan Yes Not used in this model Analog value 29 33 Binary inputs Object ...

Page 71: ...g ACTIVE INACTIVE No RC_Actual_L NRTChangeOverState Binary value 7 Indicate change over state from both digital and analogue input ACTIVE INACTIVE No RC_Actual_L NRTRoomTempSensorAlarm Binary value 8 Indicate sensor alarm on room sensor ACTIVE INACTIVE No RC_Setp_L NRTBypass Binary value 9 Force the unit in Bypass mode Is automatically returned after Bypass time default 120 min ACTIVE INACTIVE Yes...

Page 72: ...cool output 1 Off 2 Manual output 3 Automatic output Yes RC_Setp_X NRTFanSelect Multistate value 2 Fan mode select 1 Off 2 Manual speed 1 3 Manual speed 2 4 Manual speed 3 5 Auto 6 Auto 2 7 Auto 1 Yes RC_Setp_X NRTForcedVentSelect Multistate value 3 Manual Auto forced ventilation 1 Off 2 Manual On 3 Auto Yes RC_Setp_X NRTChangeOverSelect Multistate value 4 Manual Auto change over 1 Heating 2 Cooli...

Page 73: ...NRT407 manual Part IV Signals 73 ...

Page 74: ... Heating Cooling with VAV control and forced supply air function 34 Heating Heating 33 Cooling 35 Cooling Cooling 35 D Device 80 Different operating modes 41 DIP switches 15 Display handling 56 Display indications 56 Display indications 56 E Exercise 49 F Fan control 50 Auto control 50 Fan stopped 50 Manual control 50 H Heating 33 Heating or cooling via change over 34 Heating Cooling 34 Heating Co...

Page 75: ...ment 47 Setpoint calculation 46 Basic setpoint 46 Calculation of the active setpoint 46 Setpoint displacement 46 Setpoint displacement 46 Special functions 53 Special input CI 53 Split output signal 35 Stand by 41 46 SW1 7 15 T Technical data 10 Terms 5 Thermal actuators 48 Three point actuators 48 U Unoccupied 41 46 V W Wiring 17 Wiring for basic models with 3 analogue outputs 20 Wiring for model...

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