NR9000 Modbus Fan Coil Unit Controller

Transcription

1 Product sheet CT2.80 Type NR9000 NR9000 Modbus an Coil Unit Controller NR9000 is an advanced controller for 2-, 4-pipe or air-side fan coil units with /O, 3-POINT floating or modulating 0..10V control valves as well as with 3-speed or modulating fan. NR9000 is equipped with Modbus (Slave) communication protocol enabling the communication with any Modbus master device. NR9000 is comes with a standard M6 DIN rail enclosure and links to a flush mounting remote terminal (NR9000-RT) with integrated room terminal sensor. The controllers can operate as a networked solution or as stand-alone. However the NR9000 and NR9000-RT do not have internal clock. Time schedule must be programmed by a supervisory Modbus system. Model Types Model Description NR V an Coil Unit Controller NR9000-RT1A Room Interface Unit, lush Mounted, Anthracite (other colours available) NR9000-RT1B Room Interface Unit, lush Mounted, White (other colours available) NR9000-RT2A Room Interface Unit, Wall Mounted, Anthracite (other colours available) NR9000-RT2B Room Interface Unit, Wall Mounted, White (other colours available) Technical Data Power supply VAC (isolated) Inputs 4 x Digital Inputs (Window Contact, Remote Switch Off, Summer/Winter Change-Over, Comfort/Economy) 1 x Resistive Input; Return Temperature Sensor 1 x Resistive Input; Remote Temperature Setpoint 1 x Resistive Input; Auxiliary Loop Sensor 1 x Resistive Input; Auxiliary Loop Setpoint Se Outputs 2 x V 4A Triacs (Heating) 2 x V 4A Triacs (Cooling) 3 x V 8A Relays (3-Speed an Control) 2 x Open Collector (Additional Digital Outputs) 2 x 0..10Vdc Outputs (Heating and Cooling, or Modulating an) Communications Network: RS-485 Modbus RTU Room Interface: TX/RX Comms Bus Interconnect: TTL Link Bus Wiring Terminals Pluggable Terminal Blocks 1.5 mm 2 Operating Temp C Storage Temp C Operating Humidity 0..85% rh non-condensing Enclosure IP20, DIN-rail Mounted Online store: Enquiries: T: : Copyright 2012 SyxthSense Ltd. All rights reserved - 02/2012 PS CT2.80-1/14

2 Standards EN EN LVD Directive INPUTS Digital Input Window Contact. Digital Input Remote Power off. Digital Input Winter/Summer Change Over. Digital Input Comfort/Economy. Analog Input Return Temperature Sensor.* Analog Input Remote Temperature Set.* Analog Input (S3) Auxiliary loop sensor Analog Input (S4) Auxiliary loop set selector Remote Power off or Comfort/Economy digital inputs can be used to interface the controller with a Presence Detector to minimize costs for heating and cooling. When digital inputs are in use they have priority on remote sensor and supervisory system. * Sensors with a sensing element NTC10K 25 C. Accuracy ± 1K, 25 C = 3435 Digital inputs can be enabled using a NR9000 configuration tool. The default status of digital inputs (factory setting) is the following: DIGITAL INPUT DEAULT DESCRIPTI WINDOW CTACT REMOTE POWER O WINTER/SUMMER CHANGEOVER COMORT/ECOMY N.C (normally closed) N.O (normally open) N.O (normally open) N.O (normally open) OPEN window opened CLOSE window closed OPEN Comfort CLOSE off (frost protection) OPEN winter CLOSE summer OPEN Comfort CLOSE economy or 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. OUTPUTS 4 TRIAC Outputs to drive 3P valves (HOT valve and COOL valve). Contact Rating V 4 A; 3 RELAY Outputs to drive 3 speed AN (V1, V2, V3). Con- tact Rating V 8 A; 2 Analog Output 0-10V to drive proportional valves. It is possible to use 0-10V outputs to drive a modulating AN plus modulating valves in sequence (0-5/6-10). 2 Open Collector Outputs: OC1 and OC2. They have a maximum load of 18mA and can be used to drive 12Vdc relays whose maximum power is 220mW and winding resistance >= 640Ohm. OC1 output follows the /O input and it can be used, through an external relay, to enable electrical loads. If the local operation mode is enabled (through controller password) OC1 follows the input DI2 (over- ride turn off), so if DI2 is open, OC1 is too, instead if DI2 input is closed, OC1 is O too. If the local ope- ration mode is disabled, OC1 follows the value set at 9011 ModBus address. OC2 output is used to enable auxiliary functions de- scribed in the Controller functions paragraph. If the temperature sensor S3 is present, the /O auxiliary loop which controls OC2 will be automatically enabled; otherwise it is possible to enable the electrical 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. Bus to connect Remote Terminal NR9000-RT. Bus Modbus to connect Supervisor System. Bus Link to connect IO expansion. PS CT2.80-2/14

3 INSTALLATI MAINTENANCE NR9000 are suitable for mounting on a DIN rail with a quick coupling; NR9000-RT is suitable for wall mounting or flush mounting in A503 electrical Box with B-TICINO (Living & Light) and VIMAR (Plana & Idea) finishing plates. 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. The controller is maintenance free. WIRING DETAILS WARNING:The electrical installation, device connection and commissioning can only be carried out by qualified professionals and according to the local wiring regulations! Ensure that the power is isolated during wiring. C N J1 # pin Signal Directi on Type of signal Description 1 input Vac phase Power supply 2 N input neutral Power supply 3 HOT_CL output Vac TRIAC 4A Heating valve (Close) 4 HOT_CO output Vac TRIAC COM Heating valve (Com) 5 HOT_OP output Vac TRIAC 4A Heating valve (Open) 6 COLD_C output Vac TRIAC 4A Cooling valve (Close) 7 COLD_C output Vac TRIAC COM Cooling valve (Com) 8 COLD_O output Vac TRIAC 4A Cooling valve (Open) PS CT2.80-3/14

4 9 RA_COM output Vac com an Speed Com 10 R1 output Vac RELE 8A V1 an Speed 11 R2 output Vac RELE 8A V2 an Speed 12 R3 output Vac RELE 8A V3 an Speed 13 RB_COM output Not used J2 J3 J N/A Not used 15 - N/A Not used 16 - N/A Not used 40 DI1 input digital 1 /24Vac Window contact 39 DI2 input digital 2 /24Vac -O contact 38 DI3 input digital 3 /24Vac Winter/Summer 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 setpoint 33 S3 input analogue input Auxiliary Loop Return Sensor 32 S4 input analogue input Remote Set Auxiliary Loop 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 Open Collector for external RELAY 28 OC2 output Open Collector 2 2 Analogue output 2 Modulating cooling valve 2 sequence 27 AO2 output Analogue output 1 Modulating heating valve 1 fan 26 AO1 output 25 AOC output Com Com / Shield Bidir BUS RS485 - Modbus RTU Bus (-) Bidir BUS RS485 + Modbus RTU Bus (+) Vcc 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 - CIGURATI OPTIS The internally stored parameters used by the controller during operation 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 supervisory system or the dedicated configuration tool. The controller can operate also without the Re- mote Sensor using a dedicated analog input (Return Sensor). The controller will take the data coming from the Sensor and from 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 is possible to set the correction of the temperature. In this configuration, the control parameters can be changed only through a dedicated configuration tool. SYSTEM CIGURATI The system can be configured as shown in the following diagrams PS CT2.80-4/14

5 Controller + Remote Sensor Controller (Stand Alone) N Controllers + 1 Remote Sensor In this configuration all the controllers will communicate with the controller connected to the remote sensor using LINK bus. All the controllers will operate in the same way (IO expansion). PS CT2.80-5/14

6 N Controllers + N Remote Sensor + Supervisor OPERATING MODES SUMMER/WINTER CHANGE-OVER NR9000 works with 3 different operation modes: ocomort: the controller will control the temperature (driving valves and fan) to satisfy the Comfort Temperature Set. oecomy: the controller will control the temperature to satisfy the Economy Temperature Set. orost PROTECTI: the controller is normally O; just during winter operation it works with a set fixed at 8 C and heating function only. The summer / winter changeover is used by the controller to reverse the action (Hot / Cold) in 2-pipe systems and to determine whether to add or subtract the temperature correction in Economy mode. This information can be defined through a dedicated digital input or via parameter and it can be set by the supervisory system or by a configuration tool using MODBUS protocol. NOTE: by default Summer/Winter changeover is set by remote mode; in stand alone plants it has to be preconfigured in local mode; INITIAL VALVE POSITI To drive a 3-point actuator is necessary to place the actuator in a specific position. Each time the controller is powered up, the actuator will be driven in the closing position for a time equal to the overall travel time plus 33%. ACTUATOR CUT-O This 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. WINDOW CTACT This 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. HOT/COLD START-UP OPERATI "DISPOSAL" UNCTI AUXILIARY REGULATI /O AIR CIRCULATI UNCTI This 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. The "Disposal" function is useful both for the hot and the cold channel 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. This function can be automatically enable 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 C, otherwise it can be set through the supervisory system together 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. This function manages the minimum fan speed. It is enabled setting a "period" and a "minimum speed" different from zero. When the "period" will be passed, the fan will be enabled at the minimum speed for the time (minutes) set. MINIMUM SPEED ACTIVATI This 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 conti- nuous air movement helps to avoid /reduce air stratification and to optimize the regulation. A system configuration with Proportional an requires setting the minimum speed in % of the control value (0-10V). To disable this function, set 0 as minimum speed. PS CT2.80-6/14

7 ELECTRICAL COIL Electrical 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, +12 v) 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 CTROL MODES NR9000 works with 7 different control modes selectable via dip switch or by supervisory system: 1./O Valves and 3-speed fan ("AST" operation mode- Operation Diagram 1). 2./O Valves and 3-speed fan (Operation Diagram 2). 3.3-point Valves and 3-speed fan (Operation Diagram 3). 4./O Valves and 1-speed fan (Operation Diagram 4). 5.3-point Valves and 1-speed fan (Operation Diagram 5). 6./O Valves and Modulating AN (0-10 V) (Operation Diagram 6) /6-10 Sequence Valves and Modulating AN (0-10 V). (Operation Diagram 7). The 0-10V proportional outputs are always presents and they follow the -O (or 3-point) valves characteristics. The diagrams of the valves and fans share the Set point. To make the interaction of the two devices as flexible as possible the different proportional bands / Hysteresis have been thought as independent in order to define a variety of programs adaptable to different environmental situations. It is possible to enable the following function with a priority over normal operation defined by the diagrams: o HOT/COLD START-UP o "DISPOSAL" UNCTI o MINIMUM SPEED ACTIVATI 1. /O Valves and 3 Speed AN - "AST" operation mode The valves are activated in - O mode with a hysteresis. Speed 1 is when the error (E) is greater than 10% TSET-T PS CT2.80-7/14

8 E % = * 100 PB Speed 2 and 3 follow to the Proportional Band as shown in the following diagram. 2. /O Valves and 3 Speed AN The valves are activated in - O mode with a hysteresis. Speed 1, 2 and 3 follow to the Proportional Band as shown in the following diagram 3. 3 point valves and 3 Speed AN The valves are activated in Proportional mode (0-100%) using the set proportional band. Speed 1, 2 and 3 follow to the Proportional Band as shown in the following diagram 4. /O valves and 1 Speed AN The valves are activated in - O mode with hysteresis. Speed 1 follows to the Proportional Band as shown in the fol- lowing diagram 5. 3 point valves and 1 Speed AN PS CT2.80-8/14

9 The valves are activated in Proportional mode (0-100%) using a proportional band. Speed 1 follows to the Proportional Band as shown in the following diagram 6. /O Valves and Proportional Speed an (0-10V) The valves are activated in - O mode with hysteresis. Speed fan follow to the Proportional Band as shown in the following diagram generating a 0-10V output control signal /6-10 V Sequence Valves (Air Side Control) and Proportional Speed an (0-10V) The valves are activated in sequence mode (0-5/6-10) with hysteresis. If the set is satisfied the output is 5.5V.an speeds follow the Proportional Band as shown in the following diagram generating a0-10v output control signal. DIP SWITCHES The controller has 8 dip switches accessible by removing the top cover and two LEDs to check the operation. 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 the controller is configured as expansion, duplicating the master controller outputs connected to the remote sensor (NR900-RT) and/or to the supervisory system. If dip switches 1 to 4 are all O the default ModBus address is 1 (factory eeprom setting). In case of more than 14 devices, configuration can be carried out via supervisory system or using a configuration tool via Modbus protocol. Dip from 5 to 7 are used to select the operation diagram. If dip 5 to 7 are O the default operation diagram is nr. 2 - / O Valves and 3 Speed AN (factory eeprom setting). Dip 8 is used to select 2/4 pipe system. If dip 8 is O 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. PS CT2.80-9/14

10 DIP1 DIP2 DIP3 DIP4 MODBUS ADDRESS O O O O factory settings (default address1) O O O 1 O O O 2 O O 3 O O O 4 O O 5 O O 6 O 7 O O O 8 O O 9 O O 10 O 11 O O 12 O 13 O 14 controller used as IO expansion DIP5 DIP6 DIP7 O O O O O O O O O O O O CIGURATI DIAGRAM /O Valves and 3 AN speed (factory setting) /O Valves and 3 AN speed AST (Operating Diagram 1) /O Valves and 3 AN speed (Operating Diagram 2) 3-point Valves and 3 AN speed (Operating Diagram 3) /O Valves and 1 AN speed (Operating Diagram 4) 3-point Valves and 1 AN speed (Operating Diagram 5) /O Valves and Modulating AN (0 10 V) (Operating Diagram 6) 0-5/6-10 Sequence Valves and Modulating AN (0 10 V). (Operating Diagram 7) DIP 8 O SYSTEM 2 pipes 4 pipes LED OPERATI The controller has two LEDs accessible by removing the top cover to check the operation. RED LED GREEN BLINKING RATE DESSCRIPTI BLINKING O 1Hz - DUTY CYCLE 50% O BLINKING 1Hz - DUTY CYCLE 50% BLINKING BLINKING 1HZ - DUTY CYCLE 10% HEATING VALVE OPENED COOLING VALVE OPENED HEATING AND COOLING VALVE CLOSED NA REMOTE SENSOR COMMUNICATI BLINKING 2HZ - DUTY CYCLE 50% LOCAL SENSOR ERROR PS CT /14

11 Note: for a 2-pipe system the only connected valve is the "heating" valve and so the only operation led for hot and cold fluid is the Red led. DEAULT PARAMETERS Parameter Vmin Vmax Default Hot Loop Set Point 100 (10 C) 350 (35 C) 200 (20 C) Stroke Time for 3 Points actuators 30 (SEC) 480 (SEC) 60 (SEC) Derivative Constant for hot loop 1 (SEC) 1000 (SEC) 1 (SEC) Derivative Constant for cool loop 1 (SEC) 1000 (SEC) 1 (SEC) Dead Zone 0 (0 C) 100 (10 C) 20 (2 C) Set Loop Auxiliario 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) (P) Proportional Band Heating Valve 5 (0.5 C) 80 (8 C) 10 (1 C) Proportional Band Cooling Valve 5 (0.5 C) 80 (8 C) 10 (1 C) Proportional Band Heating an 5 (0.5 C) 80 (8 C) 30 (3 C) Proportional Band Cooling an 5 (0.5 C) 80 (8 C) 30 (3 C) Integration Time Heating loop 1 (MIN) 30 (MIN) 5 (MIN) Integration Time Cooling loop 1 (MIN) 30 (MIN) 5 (MIN) Cut Off unction with Extra stroke of 33% (ENABLE) Summer/Winter Changeover (WINTER) Operation Mode: COMORT(0), Economy(1), rost(2) (COMORT) Delay Time an Start (DISABLE) Delay Time an Stop (DISABLE) Minimum fan speed (DISABLE) Controller Modbus Address Operation Diagram /4 Pipe system (2 PIPE) NR9000-RT (*) STATUS WORD (ULL ENABLE) NR9000 (**) STATUS WORD an Operation Mode (STOP(0),V1(1),V2(2),V3(3),AUTO(4)) (AUTO) Digital Inputs reverse action (4 BIT, N.O(0),N.C.(1)) Bit0: WINDOW CTACT (N.C) Bit1:REMOTE POWER O (N.A.) Bit2:W/S CHANGEOVER (N.A.) Bit3: COMORT/ECOMY (N.A.) Relay Commutation Time delay (ixed 1 sec) (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) PS CT /14

12 CTROLLER STATUS WORD B 0 1 DESCRIPTI 0 Remote (Disable digital input Comfort/ Economy and Power Off) Local (Enable digital input Comfort/Economy and Power Off) Operation Mode 1 Remote (comes from NR9000-RT) Local (comes from dedicated analog input S1) Ambient Temperature 2 Remote (Disable digital input Summer/ Winter DI3) Local (Enable digital input Summer/Winter DI3) Summer / Winter Changeover 3 Remote (comes from NR9000-RT) Local (comes from dedicated analog input S2) Temperature Set 4 Disable digital input DI1 Enable digital input DI1 Window Contact C ±3K 6 Enable Disable Dip Switches Temperature Set Correction Mode 7 Disable Enable Electrical Battery SENSOR STATUS WORD Value Configuration 0 Display Off Display Only RoomTemperature in page 0 2 Display Only Temperature Set in page 0 3 Display Room Temperature in page 0 with T. Set, an e Mode fixed. 4 Display Room Temperature in page 0 with T. Set, an fixed e only Mode editable 5 Display Temperature Set in page 0 with an e Mode fixed. 6 Display Temperature Set in page 0 with an fixed e only Mode editable 7 All enabled with Set Correction +-3K 8 All enabled with Temperature Set C NR9000 DIIMENSIS PS CT /14

13 NR9000 ROOM INTERACE UNIT The remote sensor has 4 buttons and a 3 digit display. The functions of the sensor are: o Room Temperature Monitoring (T AMB). o Temperature Set (button 2 & 3). o an Speed Set (Auto, O, V1, V2, V3) (button 1). o Operation Mode Set (Button 4). The sensor has several configurations (enabled/disabled functions) that can be defined by the controller: o Set Point Disabled In this case the controller does not allow the user to change the set point from the Remote Terminal. o an Speed Disabled In this case the controller does not allow the user to change the fan speed from the Remote Terminal. o Operating Mode Disabled In this case the controller does not allow the user to change the operation modes from the Remote Terminal. o Remote Sensor Disabled In this case the controller does not allow the user to change all the function listed above and the remote terminal can show and send to controller only the room temperature. It is possible to calibrate the room temperature displayed on the remote sensor of ± 3 C (label tar) and to read and set the MODBUS address (label Add) of the controller connected to the sensor following these instructions: o press button 4 and reach the off status o press for more than 10s the button 1 (AN) All functionality is enabled by default. The remote sensor has a two-coloured led to identify the operation mode as shown in the following tables: Operation Mode LED colour Comfort green Economy orange rost Protection blinking green WIRING CNECTIS NR9000-RT is connected to NR9000 by means 4 wires, 2 for +12V power (pin 4) and GND (pin 1) and 2 for data (pin 2 and 3). or wiring is suggested Belden, model pairs (one pair for power and one pair for data. Maximum length for the cabling is 30m NR9000-RT1X DIIMENSIS PS CT /14

14 NR9000-RT2X DIIMENSIS Notes: In the view of a constant development of their products, the manufacturer reserves the right for changing technical data and features without prior notice. The consumer is guaranteed against any lack of conformity for 24 months from the time of delivery, according to the European Directive 1999/44/EC. The full text of guarantee is available on request from the seller. PS CT /14