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NRT405F901 manual

Chapter 17

Modbus signals

Name of signal

Type

Modbus
address

Default setting

Description

RC_Setp_R.NRTAIChangeOverLimitL
ow

R,3

18°C

Controller switches over to
control of cooling if
change-over temperature is
lower

RC_Setp_R.NRTAIChangeOverLimitHi
gh

R,3

28°C

Controller switches over to
control of heating if
change-over temperature is
higher

RC_Setp_R.NRTAi1Comp

R,3

0°C

Compensation for analogue
input 1

RC_Setp_R. NRTUi1Comp

R,3

0°C

Compensation for universal
input 1

RC_Setp_R.NRTInternalTempComp

R,3

0°C

Compensation for internal
room sensor

RC_Setp_R.NRTTempFilterFactor

R,3

0.2°C

Filter factor for
temperature on analogue
input
0 = No filter
1 = Max filter

Not used in this model

R,3

86-89

RC_Setp_R.NRTThermostatHyst

R,3

Room hysteresis

RC_Setp_R.NRTComfortSetPDeadBan
d

R,3

Deadband for Comfort
mode.

RC_Setp_R. NRTComfortSetP

R,3

22°C

Setpoint for Comfort mode.

Not used in this model

R,3

RC_Setp_R.NRTHeatOutputManual

R,3

0 %

Manual output heating
output (0…100 %)

RC_Setp_R.NRTCoolOutputManual

R,3

0 %

Manual output cooling
output (0…100 %)

RC_Setp_R.NRTRoomTempRemote

R,3

-255

Used for remote control of
room temperature. External
Room sensor must be
selected.

RC_SetpExt_R.NRTSetPoint

R,3

284

22°C

Basic setpoint

Содержание NRT405F901

Страница 1: ...SAUTER ITALIA SPA NRT405F901 ...

Страница 2: ...n regard to the contents of this manual Users are requested to report errors discrepancies or ambiguities to SAUTER ITALIA SPA so that corrections may be made in future editions The information in this document is subject to change without prior notification The software described in this document is supplied under licence by SAUTER ITALIA SPA and may be used or copied only in accordance with the ...

Страница 3: ...ntents CHAPTER 1 ABOUT THIS MANUAL 4 Terms 4 Additional information 4 CHAPTER 2 INTRODUCTION TO NRT405F901 5 FAN COIL CONTROLLER 5 COMMUNICATION 5 CHAPTER 3 FUNCTIONS 7 Design 7 CHAPTER 4 TECHNICAL DATA 8 Accessories for NRT405F901 9 ...

Страница 4: ...RT405F901controller Terms Term used in this manual FS Factory setting Additional information Additional information concerning NRT405F901can be found in Manual NRT tool Describes how to configure the controller The information is available for download from SAUTER ITALIA SPA s website www sauteritalia it ...

Страница 5: ...res airports hotels and hospitals NRT405F901 is suitable for control of thermal and three position actuators It offers three digital outputs for control of a fan coil unit Mounting The modular design with a separate bottom plate for wiring makes the controller easy to install and commission Mounting takes place directly on the wall or on a device box Communication Communication The controller can ...

Страница 6: ...NRT405F901 manual Chapter 2 Introduction to NRT405F901 6 Application examples ...

Страница 7: ...405F901 manual Chapter 3 Functions 7 Chapter 3 Functions 2 pipe 4 pipe Electric heater 3 position control Thermal actuators Communication NRT405F901 Table 1 The control functions Design Figure 1 NRT405F901 ...

Страница 8: ...Cnet MS TP Slave and Master Modbus 8 bits 1 or 2 stop bits Odd even FS or no parity Memory Non volatile EEPROM All settings and configurations are saved See also chapter named Memory functions during power failure Built in temperature sensor Type NTC linearised 15 kOhm Measuring range 0 50 C Accuracy of measurement 0 5 C at 15 30 C Built in display Display type Backlit LCD CE This product conforms...

Страница 9: ...r heating cooling 230 V AC max 300 mA Max 20 A during 20 ms AO1 AO2 Analogue outputs 0 10 V DC max 1 mA short circuit proof Adjustable to 2 10 V 10 0 V 10 2 V For more information on inputs and outputs see chapter Wiring Accessories for NRT405F901 External temperature sensor EGT456F101 Change over EGT456F101 RAM100F001 The accessories are available from SAUTER ITALIA SPA For more detailed informat...

Страница 10: ...PARATIONS FOR INSTALLATION 11 USING LABELS 11 CONFIGURATION 12 CHAPTER 6 INSTALLATION 13 MOUNTING 13 COMMUNICATION WIRING 13 Bottom plate connections 14 Wiring for NRT405F901 15 Wiring of various actuators 16 CHAPTER 7 COMMISSIONING 17 Troubleshooting 17 ...

Страница 11: ...l can be divided and its parts attached to the building drawings and the bottom part of the controller The label contains information regarding communication address etc together with a field for notes where a reference number for the wiring diagram can be entered Depending on the communication protocol used the address on the label can mean different things Example 1 If the label address is 191 1...

Страница 12: ...ator and 3333 log on as an operator This will work for models with integrated communication In all other models the device is configured via the display The computer running NRT tool is connected to the back of the device by way of a converter USB to RS485 The converter is connected to terminals 53 and 54 If the electronic unit needs to be configured it may be advantageous to do so before it is se...

Страница 13: ...ow Then use the gap visible at the edge of the bottom plate to open the top half completely see figure 4 Do the same thing for the bottom half of the device Figure 3 Figure 4 Lift the electronics unit up from the bottom plate The bottom plate with terminals has a number of fixing hole patterns Select suitable holes and screw the bottom plate onto the wall or connection box so that the arrows on th...

Страница 14: ...NRT405F901 manual Chapter 6 Installation 14 Bottom plate connections Figure 6 Bottom plate connections ...

Страница 15: ...tallation 15 Wiring for NRT405F901 NRT405F901 NRT405F901 Wiring of 3 position actuator Wiring of thermal actuator Wiring of electric heater with solid state relay Wiring of electric heater with solid state relay NRT405F901 NRT405F901 ...

Страница 16: ...t 1 for fan control Relay 230 V AC 3 A 21 DO2 Fan coil output 2 for fan control Relay 230 V AC 3 A 22 DO3 Fan coil output 3 for fan control Relay 230 V AC 3 A 30 NC Not connected 31 DO4 Digital output 4 for heating cooling or opening with 3 point actuator Digital output 230 V AC max 300 mA Max 2 A during 20 ms 32 CDO45 Common DO4 5 Common connection for digital outputs 4 and 5 33 DO5 Digital outpu...

Страница 17: ...d only under stable conditions Troubleshooting The Manual Auto function in NRT tool enables testing various outputs The output itself is not affected directly but rather the software object that controls the output This means that the built in safety functions cannot be deactivated The controller has different types of indications which can be used to support troubleshooting See section Indication...

Страница 18: ...S 21 DIFFERENT OPERATING MODES 21 OCCUPANCY CONTROL 21 CHAPTER 10 BUTTON MANAGEMENT 22 CHAPTER 11 TYPES OF ACTUATORS 24 CHAPTER 12 FAN CONTROL 25 CHAPTER 13 CHANGE OVER 27 CHAPTER 14 DISPLAY HANDLING 28 DISPLAY INDICATIONS 28 THE PARAMETER MENU 28 CHAPTER 15 MEMORY FUNCTIONS DURING POWER FAILURE 32 ...

Страница 19: ...ng function 2 pipe installations During control of cooling the output starts to increase when the temperature rises above the setpoint value Control principle for heating function 2 pipe installations During control of heating the output starts to increase when the temperature falls below the setpoint value ...

Страница 20: ...the neutral zone The cooling output is activated when the temperature exceeds the set value for the neutral zone The neutral zone is divided into two equal parts with one part below and one part above the setpoint See the figure below The factory setting for NZC is 2 K The above schematic drawings of the control principle show the corresponding requirement of the controller function This requireme...

Страница 21: ...dby Standby is shown in the display Heating and cooling have freely adjustable setpoints Factory settings heating 15 C cooling 30 C Off The controller neither heats nor cools and the fan is at a standstill assuming mould protection has not been selected in which case the fan is still running Windows is shown in the display The controller is in Off mode and the fan will stop if mould protection has...

Страница 22: ...point thermometer symbol 2 The actual value is shown or when the setpoint has been changed via the INCREASE and DECREASE buttons the setpoint adjustment is shown in the display together with the setpoint thermometer symbol 3 The setpoint value is shown factory setting 4 The setpoint adjustment is shown When the setpoint adjustment is displayed alternatives 2 and 4 the basic setpoint is 22 C The ba...

Страница 23: ...e buttons on the controller The parameter values are changed with the INCREASE and DECREASE buttons and changes confirmed with the On Off button Setpoint limitation In parameter 34 and 35 it is possible to set the maximum permitted increase as well as decrease of the setpoint Example If P35 5 and P34 3 the setpoint can be adjusted between 17 C and 25 C see the picture below ...

Страница 24: ...position actuators For 3 position actuators two digital outputs DO4 DO5 are used for control of a single actuator one output controlling opening the actuator and another closing it The run time in seconds can be configured for different actuators FS 120 s Exercising All actuators independent of type are exercised This is performed by the controller at a set interval measured in hours FS 23 hour in...

Страница 25: ...he second step starts at 60 and the third at 100 When the fan speed decreases each fan step has a hysteresis of 5 for changing over to the next step For example the fan will change from the third to the second step when the output signal falls below 95 Manual fan speed control By pressing the fan button the fan speed is set to Low Medium High or Auto When there is no heating or cooling demand in t...

Страница 26: ...requirement 3 The fan is controlled by both heating and cooling requirement When using an electric heater this parameter should only be set to 1 or 3 otherwise there is a risk of overheating 3 Mould protection When this function has been configured the fan will always run at the lowest speed and circulate air in the room to minimise the risk of mould growth in the fan coil unit The function is dea...

Страница 27: ... consist of either an analogue PT1000 sensor or of a closing contact connected to a universal input FS no sensor connected The PT1000 sensor must be mounted so that it can measure the temperature on the supply pipe to the coil Should this fall below 16 C FS change over is activated and cooling controlled on the output DO4 If the temperature rises above 28 C FS the change over function is turned of...

Страница 28: ...umber disappears The parameters value may now be changed using the INCREASE and DECREASE buttons By depressing the INCREASE or DECREASE button the value shown in the display is initially only changed slowly The changing speed thereafter increases in steps of approx 3 4 steps with 2 3 seconds in between Confirm Undo To confirm changing the parameter the On Off button is pressed once more The displa...

Страница 29: ...de 0 Heating control 1 Cooling control 2 Automatic change over depending on analogue temperature sensor or digital input 2 3 Operating mode when activating digital input 1 0 Economy mode presence 1 Off mode windows 1 4 Mould protection 0 Not active 1 Active fan never stops 0 5 NZC neutral zone at Comfort If the neutral zone is 2 K the heating setpoint equals the setpoint minus 1 and the cooling se...

Страница 30: ... by the cooling requirement 3 The fan is controlled by both the heating and cooling requirement When using an electric heater this parameter should only be set to 1 or 3 otherwise there is a risk of overheating 3 26 Start signal in for controller output heating or cooling for fan speed 1 20 5 when using electric heater 27 Start signal in for controller output heating or cooling for fan speed 2 60 ...

Страница 31: ...ity 2 55 Modbus timeout for characters t1 5 in ms Should be 3 5 times a character ie at least 2 ms 2 56 Response lag Modbus t3 5 in ms Should be 3 5 times a character ie at least 5 ms 5 57 Communication protocol 0 Modbus 1 BACnet MS TP 0 58 BACnet MS TP MAC address 0 127 master address 128 254 slave address FS 0 99 59 BACnet MS TP device id the 4 lowest digits Ex 4567 in 1234567 FS 60 BACnet MS TP...

Страница 32: ...surements and other variables utilised by the controller during normal operation and which tend to fluctuate continually are not saved Values can be saved approximately 100 000 times to this non volatile memory Changed settings should therefore not be sent systematically and with great frequency to the controller via network communication Sending normal changes via the network e g such as changing...

Страница 33: ... SIGNALS 36 DISCRETE INPUTS 36 COIL STATUS REGISTER 37 INPUT REGISTER 38 HOLDING REGISTER 39 CHAPTER 18 BACNET SIGNAL TYPES 43 CHAPTER 19 BACNET SIGNALS 44 ANALOGUE INPUTS 44 ANALOGUE VALUES 44 BINARY INPUTS 45 BINARY VALUES 45 LOOP 46 MULTISTATE INPUTS 46 MULTISTATE VALUES 47 DEVICE 47 ...

Страница 34: ...s etc For Modbus the bottom layer can be either RS485 RS422 or RS232 RS485 and RS422 RS485 and RS422 constitute the purely electrical part of the protocol ie 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 It may prove necessary to shift A and B in order to make Modbus work properly RS485 is a so called half duplex c...

Страница 35: ...hat the settings for the main unit are and then enter the same settings into the controller Parity can be set to odd even FS or none If no parity is set two stop bits will automatically be used If odd or even parity is set only one stop bit will be used or the total amount of bits will be too great 1 start bit 8 data bits 1 parity bit and 1 stop bit gives a total of 11 bits which is the maximum ...

Страница 36: ...ual_L NRTDIPresences L 2 15 Indicates presence from digital input RC_Actual_L NRTDIChangeOver L 2 16 Indicates change over from digital input RC_Actual_L NRTFanSpeed1 L 2 17 Indicates fan speed 1 RC_Actual_L NRTFanSpeed2 L 2 18 Indicates fan speed 2 RC_Actual_L NRTFanSpeed3 L 2 19 Indicates fan speed 3 Not used in this model L 2 20 RC_Actual_L NRTCVHeatPulsProp L 2 21 Indicates pulse prop heating ...

Страница 37: ..._Setp_L NRTUDi1NC L 1 7 0 Normally open NO or normally closed NC on universal digital input 0 NO 1 NC Not used in this model L 1 8 RC_Setp_L NRTDO4NC L 1 9 1 DO4 NO NC RC_Setp_L NRTDO5NC L 1 10 1 DO5 NO NC RC_Setp_L NRTDilAct L 1 11 0 DI1 activation presence window Economy Off RC_Setp_L NRTMPAct L 1 12 0 Activation of Mould protection RC_Setp_L NRTTermoModel L 1 13 0 EEPROM storage of Thermo model...

Страница 38: ...ture RC_Actual_R NRTRoomTempExt R 4 12 Room temperature from external sensor RC_Actual_R NRTRoomTempInt R 4 13 Room temperature from internal sensor RC_Actual_R NRTAIChangeOver R 4 14 Change over temperature RC_Actual_R NRTAnaIn1 R 4 15 Value on analogue input 1 RC_Actual_R NRTUAnaIn1 R 4 16 Value on universal analogue input 1 RC_Actual_R NRTUAnaOut1 R 4 17 Value on universal analogue output 1 RC_...

Страница 39: ...ent RC_Setp_X NRTFanSpeed1Start X 3 7 20 Controller output signal in for fan speed 1 RC_Setp_X NRTFanSpeed2Start X 3 8 60 Controller output signal in for fan speed 2 RC_Setp_X NRTFanSpeed3Start X 3 9 100 Controller output signal in for fan speed 3 RC_Setp_X NRTFanSpeedHyst X 3 10 5 Controller output signal hysteresis start stop fan speed RC_Setp_X NRTFanSpeedMax X 3 11 3 Number of fan speeds 1 3 N...

Страница 40: ...Signal connected on AI1 0 Not used Internal Room sensor used 1 External Room sensor Not used in this model X 3 25 27 RC_Setp_X NRTDi2 X 3 28 N A Not used Signal connected on DI2 1 Open window 2 Condensation alarm RC_Setp_X NRTDi3 X 3 29 N A Not used RC_Setp_X NRTUi1 X 3 30 0 Signal connected on UI1 0 Not used 1 Change over sensor digital 2 Change over sensor analogue Not used in this model X 3 31 ...

Страница 41: ...C_Setp_I NRTCVHeatPeriodTime I 3 59 60 sec Period time for pulse prop control valve heating sec RC_Setp_I NRTCVCoolPeriodTime I 3 60 60 sec Period time for pulse prop control valve cooling sec RC_Setp_I NRTCVHeatRunTime I 3 61 120 sec Run time closed valve to open heating sec RC_Setp_I NRTCVCoolRunTime I 3 62 120 sec Run time closed valve to open cooling sec Not used in this model X 3 63 67 Not us...

Страница 42: ... R 3 84 0 C Compensation for internal room sensor RC_Setp_R NRTTempFilterFactor R 3 85 0 2 C Filter factor for temperature on analogue input 0 No filter 1 Max filter Not used in this model R 3 86 89 RC_Setp_R NRTThermostatHyst R 3 90 10 Room hysteresis RC_Setp_R NRTComfortSetPDeadBan d R 3 91 2 Deadband for Comfort mode RC_Setp_R NRTComfortSetP R 3 92 22 C Setpoint for Comfort mode Not used in thi...

Страница 43: ...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 for all Object Types Commanda...

Страница 44: ...output 2 V No RC_Actual_R NRTSetPAdjustment Analog value 2 Setpoint adjustment from internal unit 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 Heating control No RC_Actual_R NRTCoolOutput Analog value 6 Cooling control No Not used in this model Analog value 7 8 Yes RC_Setp_R...

Страница 45: ...d in this model Binary input 1 Indicates condensation alarm from digital input YES NO No RC_Actual_L NRTDIPresences Binary input 2 Indicates presence from digital input ACTIVE INACTIVE No RC_Actual_L NRTDIChangeOver Binary input 3 Indicates change over from digital input ACTIVE INACTIVE No Not used in this model Binary input 4 6 No All binary inputs have normal polarity Binary values Object name O...

Страница 46: ...E INACTIVE Yes All binary values have normal polarity Loop Object name Object ID Description Controller Loop 0 The NRT controller Multistate inputs Object name Object ID Description Values Writeable Not used in this model Multistate input 0 No RC_Actual_X NRTUnitState Multistate input 1 Current running mode 1 Off 2 Unoccupied 3 Stand by 4 Occupied 5 Bypass No RC_Actual_X NRTControllerState Multist...

Страница 47: ...ed 1 3 Manual speed 2 4 Manual speed 3 5 Auto 6 Auto 2 7 Auto 1 Yes Not used in this model 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 Cooling 3 Auto Yes RC_Setp_X NRTRemoteState Multistate value 5 Remote control unit state 1 Off 2 Economy Standby 3 Economy Standby 4 Presence 6 N...

Страница 48: ...g 24 F Fan control 25 Functions 7 H Holding register 40 I INCREASE DECREASE buttons 22 28 Input register 39 Inputs Analogue 45 Binary 46 Discrete 37 Multistate 47 Installation 13 Introduction to NRT405F901 5 L Loop 47 M Memory functions during power failure 33 Mounting 5 13 Multistate values 48 O Operating modes 21 P Parameter menu the 28 Parameters 29 R Register Coil status 38 Holding 40 Input 39...

Страница 49: ...3 position actuators 24 Excercising 24 Thermal actuators 24 U Using labels 11 V W Wiring communication 13 Wiring for NRT405F901 15 ...

Страница 50: ...SAUTER your local partner www sauteritalia it ...

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