NR9000/NR9000-RT Fan Coil Digital Controller

Controlli S.p.A.16010 Sant’Olcese (GE)Tel. 010 73 06 1Fax. 010 73 06 870/871www.controlli.eu

1st Issue rev. h 09/2021 DBL408e Page 1

APPLICATION AND USE

NR9000 is a digital controller for 2- or 4-pipe terminal units (eg. Fan Coil) with ON/OFF, 3-POINT floating or modulating control valves as well as with 3-speed or modulating fan. NR9000 is equipped with MODBUS (SLAVE) communication protocol enabling the communi-cation with other MODBUS devices (MASTER). NR9000 is composed by a M6 DIN rail unit and a remote terminal (NR9000-RT) with integrated room terminal sensor.Time table control can be carried out through the supervisory system.NR9000-RT is the remote terminal which can be connected to the controller (further details on page 16).

TECHNICAL CHARACTERISTICS

Power supply NR9000: 85-265Vac (isolated);Power supply NR9000-RT: 12Vdc (from controller);Protection Degree: IP 20;Operation temperature: 2T45°C;Storage temperature: -25T65°C;Dimensions [mm]: see page 18.

NR9000 controller inputs• Digital Input (DI1) Window Contact• Digital Input (DI2) Remote Power off / Badge (1)

• Digital Input (DI3) Winter/Summer Change Over • Digital Input (DI4) Comfort/Economy (1)

• Analogue Input (S1) Return Temperature Sensor (2)

• Analogue Input (S2) Remote Temperature Set (2)

• Analogue Input (S3) Auxiliary loop sensor (3) (2)

• Analogue Input (S4) Auxiliary loop set selector (3) (2)

(1) Remote Power off” or “Comfort/Economy” digital inputs can be used to interface the controller with a Presence Detector to mini-mize costs for heating and cooling.

When digital inputs are in use they have priority on remote sensor and supervisory system. If, on the configurator is enabled “BADGE” function, the digital input DI4 loses its meaning, while the digital input DI2 enables the electrical loads and switches the operating mode between Comfort and Economy.

(2) Sensors with a sensing element NTC10K Ohm @ 25°C. Accuracy ± 1K, β @ 25°C = 3435 (reference Controlli room sensors S4xxA/B and SNTC-xL)

(3) S3 and S4 inputs have a different meaning if “changeover auto” (instead of “Aux Loop”) function is disabled from the configuration tool. S4 sensor is used to switch the controller operation mode to

Summer or Winter on the basis of the fluid temperature and for fan minimum limit function. As an alternative this function can be asso-ciated to S3 sensor (if present). S3 sensor is used as minimum limit to hold the fun if fluid is not warm.

Digital inputs can be enabled using a configuration tool called “Configuratore NR9000” thanks to which you can also reverse the in-puts action. It can be downloaded by our web site www.controlli.eu.The default status of digital inputs (factory setting) is the following:

DIGITAL INPUT DEFAULT DESCRIPTION

WINDOW CONTACT(4)

N.C (normally closed)

OPEN – window opened CLOSED – window closed

REMOTE POWER OFF

N.O. (normally open)

OPEN – Comfort CLOSED – off (frost

protection)(5)

WINTER/SUMMER CHANGEOVER

N.O (normally open)

OPEN – winter CLOSED – summer

COMFORT/ECONOMY(4)

N.O (normally open)

OPEN – Comfort CLOSED – economy(5)

(4) These inputs are disabled by default (except winter/summer changeover, look at table page 16). If you need to enable them a supervisory system is required.

(5) See Badge function

For example, in case the window switch is normally opened (closed window is equivalent to open contact), it is necessary to reverse the action of the digital input.

NR9000/NR9000-RTEnergon Fan Coil Digital Controller

CODE DESCRIPTIONNR9000 (1) Fan coil digital controller

NR9000-RT1A (2) Flush-mounting remote sensor charcoal colour

NR9000-RT1B (2) Flush-mounting remote sensor white colour

NR9000-RT2A (2) Wall mounting remote sensor charcoal colour

NR9000-RT2B (2) Wall mounting remote sensor charcoal colour

NR9000

NR9000-RT

(1) N.B.: ordering code NR9000*05(2) N.B.: ordering code NR9000-RTxx*02

The device contains electrical and electronic components and is not allowed to be disposed of as household refuse. All locally valid regulations and requirements must be observed.


NR9000 outputs• 4 TRIAC Outputs to drive 3P valves (HOT valve and COOL valve).

Contact Rating 24-250V 4 A;• 3 RELAY Outputs to drive 3 speed FAN (V1, V2, V3). Contact Rat-

ing 24..250V 8 A;• 2 Analogue Output 0-10V to drive proportional valves. It is possi-

ble to use 0-10V outputs to drive a modulating FAN plus modu-lating valves in sequence (0-5/6-10);

• 2 Open Collector Outputs: OC1 and OC2. They have a max-imum load of 18mA and can be used to drive 12Vdc relays whose maximum power is 220mW and winding resistance >= 640Ohm (ref. Controlli relay module mod. DGSRMV);• the OC1 output has a different management depending

on whether the Badge function is enabled or not. In both cases they are handled electrical loads. If Badge function is enabled, the OC1 output goes ON when the badge is inserted into the “pocket” (DI2 = closed). When pulling out the badge (DI2 = open) the OC1 output goes to OFF after 30 sec. If the badge is disabled, OC1 output follows the ON/OFF input and it can be used, through an external re-lay, to enable electrical loads. If the local operation mode is enabled (through controller password) OC1 follows the input DI2 (override turn off), so if DI2 is open, OC1 is ON too, instead if DI2 input is closed, OC1 is OFF too. If the local operation mode is disabled, OC1 follows the value set at 9011 ModBus address;

• OC2 output is used to enable auxiliary functions described in the “Controller functions” paragraph. If the temperature sensor S3 is present and “loop Aux” function is enable, the ON/OFF auxiliary loop which controls OC2 will be automat-ically enabled; otherwise it is possible to enable the electri-cal coil in emergency (through controller password) which controls OC2. If the sensor S3 is not present, OC2 follows the value set at 9013 ModBus address;

• 1 Bus to connect remote terminal NR9000-RT;• 1 Bus Modbus to connect supervisor system;• 1 Bus Link to connect IO expansion.

Directives and Standards

Standard CEI EN 61326-1 for EMC directive.Standard CEI EN 61010-1 and CEI EN 60730-2-9 for LVD directive.

INSTALLATION

Installation of NR9000 controller

NR9000 are suitable for mounting on a DIN rail with a quick coupling. Connections shall be in compliance with existing rules and using max 2,5mm2 cross section wires for J1 and J2 terminals and 1,5mm2 cross section wires for J3 and J4.To use wire terminals on power supply wires follow the instructions in order to prevent accidental contacts between cables at different voltages in case of wrong installation. The main power is fully isolated but we suggest to install a protection device compliant to existing national rules with a 125mA intervention threshold and a minimum 3mm contact opening. The device is not supplied with the product.

Installation of NR9000-RT remote sensor

NR9000-RT is suitable for flush mounting in standard box 503E or for wall mounting on the basis of the model. The supporting frame is compatible with BTicino cover plates Livinglight (square cover) or Living International (round cover) otherwise with Vimar Plana cover plates modifying the supplied supporting frame as shown in the fol-lowing figure.

Using a screwdiver press the snap and push down.

ACCESSORIES

NR9000-RT accessories

54609-02 BTicino LivingLight series (square cover) finishing cover plate;

54609-03 BTicino Living International series (round cover) finish-ing cover plate.

Note: In case of orders for wall mounting models, back plate and BTicino Living International (round cover) finishing plate are in-cluded.

MAINTENANCE

The controller is maintenance free.

TERMINALS

NR9000-RT terminals

NR9000 terminals

NOTE: the maximum distance of the connecting cable to the con-troller must be 15 m.

Pluggable terminals (J1 & J2) 5,08mm pitch for low voltage signals (230Vac) and 3,5mm pitch (J3 & J4) for very low voltage signals.Look at the table on the next page for details.


CONN # pin Signal Direction Type of signal Description

J1

1 F input 85-265Vac phase Power supply

2 N input 85-265Vac neutral Power supply

3 HOT_CL output 24..230Vac TRIAC 4A Hot 4-pipe - heat/cool 2-pipe 3P valve (close)

4 HOT_COM output 24..230Vac TRIAC COM Common

5 HOT_OP output 24..230Vac TRIAC 4A Hot 4-pipe - heat/cool 2-pipe 3P valve (open) - ON/OFF

6 COLD_CL output 24..230Vac TRIAC 4A Cool 4-pipe 3P valve (close)

7 COLD_COM output 24..230Vac TRIAC COM Common

8 COLD_OP output 24..230Vac TRIAC 4A Cool 4-pipe 3P valve (open) - ON/OFF

J2

9 RA_COM output 24..230Vac COM Fan Speed COM

10 R1 output 24..230Vac RELAY 8A V1 Fan Speed



13 RB_COM output Not used

14 - N/A Not used

15 - N/A Not used

16 - N/A Not used

J3

40 DI1 input digital 1 /24Vac Window contact

39 DI2 input digital 2 /24Vac ON-OFF contact / Badge

38 DI3 input digital 3 /24Vac Summer/Winter contact

37 DI4 input digital 4 /24Vac Comfort-economy contact

36 DI_COM input digital COM COM

35 S1 input analogue input Return sensor

34 S2 input analogue input Remote set

33 S3 input analogue input Auxiliary Loop Return Sensor / Fan minimum limitation

32 S4 input analogue input Remote Set Auxiliary Loop / Changeover Auto

31 S_COM input COM COM

30 OCC output COM Open Collector +12V Com Open Collector +12V

29 OC1 output Open Collector 1 Open Collector for external RELAY 1

J4

28 OC2 output Open Collector 2 Open Collector for external RELAY 2

27 AO2 output Analogue output 2 Modulating cooling valve 2 – fan

26 AO1 output Analogue output 1 Modulating heating valve 1 – sequence

25 AOC output COM COM / Shield

24 485- Bidir BUS RS485 - Supervisor Bus (-)

23 485+ Bidir BUS RS485 + Supervisor Bus (+)

22 +12Vcc output 12V (sensor NR9000-RT) 12V (sensor NR9000-RT)

21 SDA Bidir BUS TX (sensor NR9000-RT) BUS TX (sensor NR9000-RT)

20 SCL Bidir BUS RX (sensor NR9000-RT) BUS RX (sensor NR9000-RT)

19 GND Bidir GND (sensor NR9000-RT) GND (sensor NR9000-RT)

18 TTL+ Bidir Link Bus + Bus I/O expansion +

17 TTL- Bidir Link Bus - Bus I/O expansion -

Refer to the schemes on the next pages.


WIRING DIAGRAMS

Example of 4-pipe plant with 230V 3-point valves

Example of 4-pipe plants with 230V ON/OFF valves

* *****

* Or Fan minimum limit

** or Changeover Auto / Fan minimum limit

*** Or Input Badge

* **

***



*** Or Input Badge


Example of 4-pipe plants with 24V 3-point valves

Example of 4-pipe plant with 24V ON/OFF valves

* **

***



*** Or Input Badge

* **

***



*** Or Input Badge




* **

***



*** Or Input Badge

* **

***



*** Or Input Badge




* **

***



*** Or Input Badge

* **

***



*** Or Input Badge


• N Controllers + N Remote Sensor + Supervisor

Supervisory systemThe supervisory system can be implemented using the following MODBUS-RTU (master) devices: • Operator Panel: MT-NET-PONR: it is possible to connect up to 50

controllers.• PC Supervisor: configuration tool “Configuratore NR9000” down-

loadable from www.controlli.eu site; in this case it is possible to connect up to 250 controllers. It is possible to use also Micronet View or Touch Screen GTO series on demand getting in touch with our technical dept.; in this case it is possible to connect up to 48 controllers.

ModBus - RS485 ConnectionThe RS485 network is implemented with a 3-conductor cable, which will be later identified as “+” (pin 23), “-” (pin 24) and “GND” (pin 25). For wiring is suggested Belden®, model 8762.For “disturbed” areas is suggested a Belden®, model 3106A using the twisted pair to connect the “+” and “-“, the reference wire to con-nect to “GND” and the shield to connect to ground.

Alternatively you can use a cable with the following electrical and mechanical characteristics:

• AWG 20/22;• characteristic impedance of 120Ω;• copper wire, “plait” type, twisted;• shielded braided and insulated;

The shield must be connected to controller GND (pin 25).

The network must be wired only in accordance with the principle shown here, called “daisy chain” (the device is composed by a sin-gle RS485 port). Star connections are not allowed.

Connections warningsFor proper network cabling is recommended to take the following precautions:

1. Do not use different types of cable to achieve the same net-work, but always use only the same type of cable;

2. The network cable carries out safety voltage signals (SELV) and must not be wired together with dangerous voltage signals (e.g., 230Vac) or carriers of high currents, especially if in alter-nating current. Also avoid parallel paths to these power cables;

3. Wire the cable lying avoiding kinks, narrow bending radii and unnecessary wrapping in hanks or skeins;

4. Do not twist the cable cord around the power conductors and, if they should cross, consider an intersection at 90 ° between the cable and these conductors;

5. Keep away from sources of electromagnetic field in particular by large motors, electrical cabinet, reactors for neon, all types of antennas;

6. Do not pull the power cable exceeds 110N (11.3kg) to prevent

OPERATION

The internally stored parameters used by the controller during op-eration can be changed using NR9000-RT Remote Sensor or using a Supervisory System (MODBUS protocol). Remote Sensor NR9000-RT allows to change the operation mode, the set point and the fan speed; all other parameters can be modified only through the su-pervisory system or the dedicated configuration tool. The controller can operate also without the Remote Sensor using a dedicated an-alogue input (Return Sensor).

The controller will consider the data acquired by the Sensor and by the Supervisory system (if present) and will perform a P or PI or PID regulation to drive the valves and the fan.

The controller can operate also without NR9000-RT and supervisory system (Modbus). In this case the room temperature is measured by the return sensor and thanks to the remote selector it is possible to set the correction of the temperature. In this configuration, the control parameters can be changed only through a dedicated configura-tion tool.

System configuration

The system can be configured as shown in the following diagrams:

• Controller + Remote sensor

• Controller (Stand Alone) with return sensor

• N Controllers ( with N-1 expansions) + 1 Remote Sensor(N max I/O expansions = 6)


ironing;7. Assess in advance the route so that it will be as short as possible

and note addresses of connected instruments with particular reference to its location in the orderly sequence. This can be very useful in maintenance; we recommend to note the Mod-bus Address on the product label.

8. Do not reverse the polarity “+” and “-” of the connection ter-minals;

9. Avoid short lengths of cable terminations in connection tools to make a maintenance without tearing or flues of the cables possible;

10. Identify start and ending terminations and avoid cuts “open”;

Terminating transistors and network polarizationThe slew rate control, mutual function in our 485 transceiver and the limited baud rate to 9600 baud make the terminating resistors not necessary.RS485 network needs of polarization typically in charge of the master device; the controller doesn’t have polarization resistors.

The transceiver used by the controller allows to drive up to 256 points. RS485 standards require a maximum length of 1200m and/or 32 de-vices on the network.It should be noted that more limits are exceeded, higher is the prob-ability that problems in communication arise. The phenomenon is not systematic and may not occur. Conversely, in case problems should arise and none of the points mentioned in this paragraph has solved them, it is recommended to connect a repeater (CONV RS485-RIP), as shown in the picture below:

N4177-07

Repeater

GND

+ - + - GND

R=100 - 120 Ohm

DeviceDevice

GND

+ - + - + - GND

GND

Device

GND

+ -

Device

+-

SupervisorySystem

GND

R=100 - 120 Ohm

N.B.: Connect the repeater if cables length exceeds 1200m or if de-vices are more than 32.

Operation modesNR9000 works with 3 different operation modes:

• COMFORT: the controller will control the temperature (driving valves and fan) to satisfy the Comfort Temperature Set.

• ECONOMY: the controller will control the temperature to satisfy the Economy Temperature Set.

• FROST PROTECTION: the controller is normally OFF; just during winter operation it works with a set fixed at 8°C and heating function only.

CONTROLLER FUNCTIONS

Summer/Winter ChangeoverThe summer/winter changeover is used by the controller to reverse the action (Hot/Cold) in 2-pipe systems: the temperature set in econ-omy mode will be increased with the set correction during summer and decreased during winter. S/W changeover can be carried out in 3 different ways, it means through: digital input DI3, S4 sensor input on collector, ModBus connection (EEprom value). In case of use of S4 sensor 2 set are need to switch from summer to winter.N.B: by default Summer/Winter changeover is set by local mode; in plants equipped with a supervisory system it has to be preconfigured by remote mode; Initial Valve positionTo drive a 3-point actuator is necessary to place the actuator in a specific position. Each time the controller is powered up, the actua-tor will be driven in the closing position for a time equal to the overall travel time plus 33%. Cut-offThis function is used to stop the control of the 3 points actuator after the overall travel time plus 33%. This function is used to ensure the correct valve closing and to reduce the noise.The function can be disabled by the supervisory system. In this case

at its stroke end the actuator will be powered indefinitely.

Window contactThis function is used to save energy when a Normally Closed contact is opened (Open Window). In this case the controller will change the operation mode from Comfort to Economy. When the window is open, if the minimum fan speed or the air recirculation functions are enabled, the fan will be anyway turned off when the set is reached.

Hot/Cold launchThis function is used to avoid the introduction of cold or hot air in the ambient by delaying (for a set time) the fan start. To disable the function, set the time = 0.

“Disposal” The “Disposal” function is useful both for the hot and the cold chan-nel and it helps to take off the energy stored in the fan coil radiator by delaying the fan turning off.To disable the function, set the time = 0.

Minimum speed activationThis function is used to prevent air stratification, especially when using the Return Sensor, as it could be very low sensitive to temperature variation that occurs at man’s height. A continuous air movement helps to avoid /reduce air stratification and to optimize the regula-tion.If the fan is connected to the relay output, it is necessary to set the “minimum fan speed” parameter at 1. A system configuration with Proportional Fan requires setting the minimum speed in % of the con-trol value (0 - 10V), therefore, if the fan is connected to the 0-10V output, it is necessary to set the “minimum fan speed” parameter at a value between 0 and 50. In both cases the 0 value disables the function. To disable this function, set 0 as minimum speed.

Auxiliary regulation ON/OFF (P action)This function is enabled by default as an alternative to “changeover Auto” function, when the sensor in position S3 is connected. If the remote set in S4 is connected, it is possible to have a set in the range 10-30°C, otherwise it can be set through the supervisory system to-gether with the dead zone.If the supervisory system is not present , this function will be carried on at fixed point 20°C with dead zone = 1K. The output will be available in OC2 and it will exclude the management of the electrical coil.

Air recirculation functionThis function manages the minimum fan speed. It is enabled setting a “period” and a “minimum speed” different from zero. When the “pe-riod” will be passed, the fan will be enabled at the minimum speed for the time (minutes) set.

Electrical CoilElectrical Coil function can be enabled in the configuration tool as “emergency”.The output provides an open collector signal (OC2) (with reference to signal pin 30, +12V) to control an external auxiliary relay.The output is activated when the room temperature is lower than:

“hot” operation set - Proportional Band - 1°C and it goes off when the room temperature is higher than:

“hot” operation set - proportional band

Electrical Coil in “emergency” mode:

Automatic changeoverThis function can be enabled through the configuration tool by set-ting label “ChOver-LimF” instead of “Loop AUX”. This function is auto-matically activated connecting S4 sensor. If the temperature measured by S4 sensor is lower than the minimum set, (default 20°C) than the controller switches to summer operation mode. If the temperature measured is higher than the maximum set, (default 30°C) than the controller switches to winter operation mode.


Fan minimum limitThis function can be enabled through the configuration tool by set-ting label “ChOver-LimF” instead of “Loop AUX”. This function inhibits the fan in heating if the temperature measured by sensor S3 is lower than the minimum temperature set (deafult 35°C). This fuction is automatically activated connecting S3 or S4 sensor (is possible to use only S4 sensor sharing changeover function with fan limit function). This function can be disabled setting a low temperature minimum set (10°C)

Check of minimum limit and maximum fan speedThis feature allows you to limit the speed of the fan with a different meaning for the 3-speed fan and proportional.Through the configurator you can set the values of the limits and, for the proportional, decide whether to keep the minimum speed also when the set is satisfied.

The first type of ventilation runs directly through the motor windings of the relays. The second type of ventilation manages an inverter through an analogue output 0 - 10 V.

For ventilation to 3 fixed speeds, set the “minimum speed limit”, it means keeping the fan speed 1 even when the set is satisfied. While it has no action on the “Maximum Speed Limit.”

The proportional ventilation, instead, uses the “Minimum speed limit” to protect the motor from burning (the motor is driven with low signals but does not rotate) and the “Maximum speed limit” to reduce noise at high speeds, due to turbulence in air ducts.

The switching on and off are managed by a hysteresis determined by the same value of the Minimum Limit.The setting of the Flag “Fan min at set point” keeps the fan speed to the minimum limit set also when set is satisfied.

Fan on with satisfied setOutput

Max. limit

Min. limit

temperature

Fan on with satisfied set(hysteresis)Output

Max. limit

Min. limit

temperature

Involved parameters:Ventilation minimum limit = 0Ventilation maximum limit = 100Fan at minimum speed @ satisfied set = NOHeating loop set = 20°CFan proportional band = 3Valve proportional band ON/OFF = 1 Plant = 2 pipesLoop = heating

Control modesNR9000 works with 8 different control modes selectable via dip switch or by supervisory system:

1. ON/OFF Valves and 3-speed fan (“FAST” operation mode - Oper-ation Diagram 1).2. ON/OFF Valves and 3-speed fan (Operation Diagram 2).3. Proportional Valves (3 point or 0-10V) and 3-speed fan (Operation

Diagram 3).4. ON/OFF Valves and 1-speed fan (Operation Diagram 4).5. Proportional Valves (3 point or 0-10V) and 1-speed fan (Operation Diagram 5).6. ON/OFF Valves and Modulating FAN (0–10V) (Operation Diagram 6).7a. 2-pipe plant. Proportional Valve (0-10V) and Modulating Fan (0-10V) (Operation Diagram 7a).7b. 4-pipe plant: Sequence Valves 0-5/6-10V and Modulating Fan (0-10V) (Operation Diagram 7b).8. 3-point Valves and Modulating Fan (0-10V) (Operation Diagram 8).When using ON / OFF valves and three points, the modulating valves that share the same temperature set point and the same proportion-al band can also be used in parallel.In case of use of 3-speed fans (3 relays), the 0-10V outputs are always available and they follow the ON-OFF or 3-point valves characteris-tics.The diagrams of the valves and fans share the Set point, instead pro-portional bands and hysteresis can be set independently. It is possible to enable the functions hot/cold launch, “disposal” and minimum speed activation with a priority over normal operation de-fined by the diagrams.

Badge FunctionThis function can be activated in the tools setting “Function Bagde = ON”.In this case the “Forcing regime from local inputs” is disabled and the digital input D12 is used. The presence of the badge (DI2 = closed) switches the regulator in Comfort mode, while the absence switches into Economy mode. In addition, the presence of the badge ena-bles the management of electrical loads through the OC1 output and the absence disables them with a delay of 30 sec.Through supervision, if present, it is possible to force the operatingmode independently if the badge function is active or not.Through the RT probe, if present, it is possible to force the operating mode only if the badge function is active.Only if the badge function is active the electrical loads can be en-abled.

Min. Limit and Max Range SetThrough the configurator you can define the minimum and maxi-mum value (in the 10-35 range) of the temperature set in RT probe. By setting the minimum and maximum value for the same value is obtained a fixed-point operation.

Max value of correction of the SetThrough the configurator it is possible to define the maximum value of correction + - of the Set (range 1 - 5).Through the RT probe you can set the values within the set values.


1. ON/OFF Valves and 3 Speed FAN - “FAST” operation mode

The valves are activated in ON-OFF mode with a hysteresis.Speed 1 is ON when the error (E) is greater than 10%. TSET-T E % = ----------- * 100 PB

Speed 2 and 3 follow to the Propor-tional Band as shown in the diagram aside.

2. ON/OFF Valves and 3 Speed FAN

The valves are activated in ON-OFF mode with a hysteresis.Speed 1, 2 and 3 follow to the Pro-portional Band as shown in the dia-gram aside.

3. Proportional Valves (3 point or 0-10V) and 3-speed fan

The valves are activated in Propor-tional mode (0-100%) using the set proportional band.Speed 1, 2 and 3 follow to the Pro-portional Band as shown in the dia-gram aside.


4. ON/OFF valves and 1 Speed FAN

The valves are activated in ON-OFF mode with hysteresis.Speed 1 follows to the Proportion-al Band as shown in the diagram aside.

5. Proportional Valves (3 point or 0-10V) and 3-speed fan

The valves are activated in Pro-portional mode (0-100%) using a proportional band.Speed 1 follows to the Proportion-al Band as shown in the diagram aside.

6. ON/OFF Valves and Proportional Speed Fan (0-10V)

The valves are activated in ON-OFF mode with hysteresis.Speed fan follow to the Propor-tional Band as shown in the dia-gram aside generating a 0-10V output control signal.


7a. Proportional Valve (0-10V) and Proportional Speed Fan (0-10V) (2-pipe plant)

8. 3 Point valves and modulating valves (0-10V)

The valves are activated in se-quence mode (0-5/6-10) with hysteresis. If the set is satisfied the output is 5,5V.Fan speeds follow the Proportion-al Band as shown in the diagram aside generating a 0-10V output control signal.

Control modes diagrams 2-pipe plant Out AO1 Out AO2

6 No --- Fan

6 Yes --- Fan

7 Yes Hot/cool valve Fan

7 No Hot/cool sequence Fan

Modulating valve and/or fan application example

7b. 0-5/6-10 V Sequence Valves and Proportional Speed Fan (0-10V) (4-pipe plant)

The valves are activated in Pro-portional mode (0-100%) using the set proportional band, (heat-ing during winter, cooling during summer).Fan speeds follow the Proportion-al Band as shown in the diagram aside generating a 0-10V output control signal.

The valves are activated in Pro-portional mode (0-100%) using the set proportional band, (heat-ing during winter, cooling during summer).Fan speeds follow the Proportion-al Band as shown in the diagram aside generating a 0-10V output control signal.


NR9000 CONTROLLER DIP SWITCHES AND LEDs

The controller has 8 DIP switches accessible by removing the top cover and two LEDs to check operation anomalies.

1 2 3 4 5 6 7 8

ON

DIP switches from 1 to 4 can be used to set MODBUS devices address (up to 14) without the use of the configuration tool and to set the controller in expansion mode duplicating the outputs.If DIP 1-4 are all ON the controller is configured as expansion, dupli-cating the master controller outputs connected to the remote sensor (NR9000-RT) and/or to the supervisory system.If DIP switches 1 to 4 are all OFF the default ModBus address is 1 (fac-tory eeprom setting). In case of more than 14 devices, configuration can be carried out via supervisory system or using a configuration tool via Modbus pro-tocol.DIP from 5 to 7 are used to select the operation diagram. If DIP 5 to 7 are OFF the default operation diagram is nr. 2 - ON/OFF Valves and 3 Speed FAN (factory eeprom setting).DIP 8 is used to select 2/4 pipe system. If DIP 8 is OFF the system is 2 pipe (factory eeprom setting).Parameters set by DIP have the priority over the supervisory system. It is possible to disable the DIP switch setting by ModBus.It is necessary to power down and power up the controller in case of any change in DIP switches configuration.

DIP Switches 1-4 settings

DIP 1 DIP 2 DIP 3 DIP 4 MODBUS ADDRESS

OFF OFF OFF OFF Factory Setting (default address1)

ON OFF OFF OFF 1

OFF ON OFF OFF 2

ON ON OFF OFF 3

OFF OFF ON OFF 4

ON OFF ON OFF 5

OFF ON ON OFF 6

ON ON ON OFF 7

OFF OFF OFF ON 8

ON OFF OFF ON 9

OFF ON OFF ON 10

ON ON OFF ON 11

OFF OFF ON ON 12

ON OFF ON ON 13

OFF ON ON ON 14

ON ON ON ON Controller used as IO expansion

DIP switches 5-7 settings

DIP 5 DIP 6 DIP 7 CONFIGURATION DIAGRAM

OFF OFF OFF ON/OFF Valves and 3 FAN speed (factory setting)

ON OFF OFF ON/OFF Valves and 3 speed FAN - “FAST” operation mode (Operating Diagram 1)

OFF ON OFF ON/OFF Valves and 3 speed FAN (Operating Diagram 2)

ON ON OFF Proportional Valves (3 point or 0-10V) and 3 FAN speed (Operating Diagram 3)

OFF OFF ON ON/OFF Valves and 1 speed FAN (Operating Diagram 4)

ON OFF ON Proportional Valves (3 point or 0-10V) and 1 speed FAN (Operating Diagram 5)

OFF ON ON ON/OFF Valves and Modulating FAN (0–10V) (Operating Diagram 6)

ON ON ON Proportional Valves and Modulating FAN (0–10V). (Operating Diagram 7a e 7b)

To set the Operating Diagram 8 is necessary to use the configurator leaving the DIP 5, 6 and 7 in OFF position.

DIP switche 8 settings

DIP 8 PLANT

OFF 2-pipe

ON 4-pipe

LEDs functionalitiesController is equipped with 2 LEDs to check its behaviour and possi-ble anomalies as shown in the following table:

RED LED GREEN LED BLINKING RATE DESCRIPTION

BLINKING OFF 1Hz – DUTY CYCLE 50% HOT VALVE OPENED

OFF BLINKING 1Hz - DUTY CYCLE 50% COOL VALVE OPENED

BLINKING BLINKING 1Hz – DUTY CYCLE 10% HOT & COOL VALVE CLOSED

ON ON NAREMOTE SENSOR COMUNICATION

FAILURE

ON BLINKING 2 Hz – DUTY CYCLE 50% LOCAL SENSOR ERROR

Note: for a 2-pipe system the only connected 3-point or ON/OFF valve is the HOT valve and so the only operative LED for hot and cool fluid is the RED LED.


DEFAULT PARAMETERS

The controller is released with the DIP switches in OFF position (2-pipe, Modbus Address 1, ON / OFF valves and 3 fan speed) and with regu-lation parameters shown in the following table:

Parameter Vmin Vmax Default

Hot Loop Set Point 100 (10°C) 350 (35°C) 200 (20°C)

Stroke Time for 3 Points actuators 30s 480s 60s

Derivative Constant for hot loop 1s 1000s 1s

Derivative Constant for cool loop 1 s 1000 s 1s

Dead Zone 0 (0°C) 100 (10°C) 20 (2°C)

Auxiliary Loop Set 100 (10°C) 350 (35°C) 200 (20°)

Set adjustment for Economy operation mode 0 (0°C) 40 (4°C) 30 (3°C)

Action Type P(0), PI(1), PID(2) 0 2 0 (P)

Proportional Band Hot Valve 5 (0.5°C) 80 (8°C) 10 (1°C)

Proportional Band Cool Valve 5 (0.5°C) 80 (8°C) 10 (1°C)

Proportional Band Hot Fan 5 (0.5°C) 80 (8°C) 30 (3°C)

Proportional Band Cool Fan 5 (0.5°C) 80 (8°C) 30 (3°C)

Integration Time Hot loop 1 (min) 30 (min) 5 (min)

Integration Time Cool loop 1 (min) 30 (min) 5 (min)

Cut Off Function with Extra stroke of 33% 0 1 1 (ENABLE)

Summer/Winter Changeover 0 1 0 (WINTER)

Auxiliary loop / automatic changeover Loop Change Auxiliary Loop Set

Automatic changeover min. set 10 35 20

Automatic changeover max. set 10 35 30

Fan min. limit set 10 55 35

Fan min. limit hysteresis 0 10 3

Operation Mode: COMFORT(0), Economy(1), Frost(2) 0 2 0 (COMFORT)

Delay Time Fan Start 0 255 0 (DISABLE)

Delay Time Fan Stop 0 255 0 (DISABLE)

minimum fan speed 0 50 0 (DISABLE)

Controller Modbus Address 1 250 1

Operation Diagram 1 7 2

2/4 Pipe system 0 1 0 (2-PIPE)

NR9000-RT (*) “STATUS WORD” 0 8 8 (FULL ENABLE)

NR9000 (**) “STATUS WORD” 0 255 0

Fan Operation Mode (STOP(0),V1(1),V2(2),V3(3),AUTO(4)) 0 4 4 (AUTO)

Digital Inputs reverse action (4 BIT, N.O(0),N.C.(1)) 0 15

1 Bit0: WINDOW CONTACT (N.C.) Bit1:REMOTE POWER OFF (N.A.) Bit2: W/S CHANGEOVER (N.A.)

Bit3: COMFORT/ECONOMY (N.A.)

Relay Commutation Time delay (Fixed 1 sec) 0 1 1 (ENABLE)

Auxiliary loop hysteresis Auxiliary loop direct/reverse action

Air recirculation function Period Air recirculation function time

0 (0.5°C) 0

0 (min) 1 (min)

80 (8.0°C) 1

60 (min) 10 (min)

10 (1.0°C) 1

0 (min) 1 (min)

Badge Control 0 1 0 (DISABLED)

Maximum Fan Speed 50 100 100

Proportional Fan speed min @ Set 0 1 0 (DISABLED)

Max Correction +- Set 1 5 3

Minimum setting value of Set 100 (10° C) 350 (35° C) 100 (10° C)

Maximum setting value of Set 100 (10° C) 350 (35° C) 350 (35° C)


** “STATUS WORD” parameter NR9000

BIT Description “0” “1” Default

0 Operation Mode Remote (Disable digital input Comfort/Economy and Power Off)

Local (Enable digital input Comfort/Economy and Power Off) 0

1 Ambient Temperature Remote (comes from NR9000-RT) Local (comes from “dedicated” analogue input S1) 0

2 Summer / Winter Changeover Remote (Disable digital input Summer/Winter DI3)

Local (Enable digital input Summer/Winter DI3) 1

3 Temperature Set Remote (comes from NR9000-RT) Local (comes from “dedicated” analogue input S2) 0

4 Window Contact Disable digital input DI1 Enable digital input DI1 0

5 Temperature Set Correction Mode 10-35°C ±3K 0

6 DIP switch Enable Disable 0

7 Electrical Battery Disable Enable 0

* “STATUS WORD” parameter NR9000-RT

Value Default

0 Display Off “---”

1 Display “Only” Room Temperature in page 0

2 Display “Only” Temperature Set in page 0

3 Display Room Temperature in page 0 with T. Set, Fan e Mode “fixed”.

4 Display Room Temperature in page 0 with T. Set, Fan “fixed” e only Mode “editable”

5 Display Temperature Set in page 0 with Fan e Mode “fixed”.

6 Display Temperature Set in page 0 with Fan “fixed” e only Mode “editable”

7 All enabled with Set Correction (+-3K)

8 All enabled with Temperature Set 10T35°C (default)


REMOTE SENSOR NR9000-RT

T amb

1 2

34

The remote sensor has 4 buttons and a 3 digit LCD display.The functions of the sensor are:

• Room Temperature Monitoring (T amb) or the return temp. (T ret.).

• Temperature Set (buttons 2 & 3).• Fan Speed Set (Auto, OFF, V1, V2, V3 - button 1).• Operation Mode Set (Button 4).

The sensor has several configurations (enabled/disabled functions) that can be defined by the controller through the supervisory system or the configuration tool:

• Set Point DisabledIn this case the controller does not allow the user to change the set point from the Remote Terminal.

• Fan Speed Disabled

In this case the controller does not allow the user to change the fan speed from the Remote Terminal.

• Operating Mode DisabledIn this case the controller does not allow the user to change the operation modes from the Remote Terminal.

• Remote Sensor DisabledIn this case the controller does not allow the user to change all the function listed above and the remote terminal sends to the controller only the room temperature and will display the sym-bols (- - - ).

• In the provided configurations, the sensor will automatically di-spaly the temperature detected by the internal sensor of the RT sensor or, if present, the temperature detected by the return sensor (S1) conncted to the controller. The sensor enabled for the regulation will be however defined by the controller “status word” (which can be set through the configurator).

It is possible to calibrate the room temperature displayed on the re-mote sensor of ± 3°C (label tAr) and to read and set the MODBUS ad-dress (label Add) of the controller connected to the sensor following these instructions:

• press button 4 and select the frost protection status (OFF)• press simultaneously for more than 10s the buttons UP and

DOWN

All functionalities are enabled by default.

The remote sensor NR9000-RT has a two-coloured LED to identify the operation mode as shown in the following tables:

OPERATION MODE LEDComfort green

Economy orange

Frost protection (OFF) green blinking

NR9002-RT remote sensor mounting instructions

Flush-mountingMake wiring connections

Remove the cover plate

Fix to flush-mounting box 503

Wall mounting

Distance between holes [mm]

Make wiring connections

Remove the cover plate

Fix to wall with 2 Fisher screws

The performances stated in this sheet can be modifi ed without any prior notice


DIMENSIONS [mm]

NR9000

NR9000-RT1X

NR9000-RT2X

Documents

NR9000/NR9000-RT Fan Coil Digital Controller