cmt manual - netafim · this section of the cmt manual can be used for the software of both the nmc...

CMT MANUAL 4.1 USER MANUAL – NMC – CLIMATE CONTROL

Version 3.00 JA20120201 User Manual – NMC - Climate Control Page 1

TABLE OF CONTENTS

INDEMNITY ............................................................................................................................................ 6

DOCUMENT INFORMATION .................................................................................................................... 6

ACKNOWLEDGEMENTS .......................................................................................................................... 6

4.1.0 INTRODUCTION ............................................................................................................................. 7

4.1.0.1 GENERAL DESCRIPTION .................................................................................................................. 8

4.1.0.2 MAIN FEATURES ............................................................................................................................. 9

4.1.0.3 NMC JUNIOR / 64 GENERIC OPERATION GUIDELINES ................................................................. 10

4.1.0.4 MAIN MENU SCREEN ................................................................................................................... 11

4.1.0.5 USE OF THE KEYPAD ..................................................................................................................... 12

4.1.0.6 RESETTING NMC CONTROLLER .................................................................................................... 13

4.1.0.6.1 WARM RESET ............................................................................................................................ 13

4.1.0.6.2 COLD START .............................................................................................................................. 15

4.1.0.7 ANALOGUE INPUTS ...................................................................................................................... 15

4.1.0.8 NMC CLIMATE CONTROL MENU STRUCTURE .............................................................................. 16

4.1.1 CLIMATE PROGRAM..................................................................................................................... 17

4.1.1.1 VENTS ........................................................................................................................................... 19

4.1.1.1.1 VENTILATION PROGRAM .......................................................................................................... 19

4.1.1.1.2 CALIBRATION OF VENTS ............................................................................................................ 21

4.1.1.2 FANS OPERATION PROGRAM ....................................................................................................... 23

4.1.1.3 HEATING ....................................................................................................................................... 25

4.1.1.4 SCREEN ......................................................................................................................................... 27

4.1.1.4.1 SCREEN PROGRAM .................................................................................................................... 27

4.1.1.4.2 SCREEN CALIBRATION ............................................................................................................... 29

4.1.1.5 FOGGING ...................................................................................................................................... 31

4.1.1.6 COOLING PAD ............................................................................................................................... 33

4.1.1.7 MISTING ....................................................................................................................................... 35

4.1.1.8 CIRCULATORS ............................................................................................................................... 37

4.1.2 CLIMATE PROCESS ....................................................................................................................... 39

4.1.2.1 HUMIDITY TREATMENT ................................................................................................................ 41

4.1.2.2 SPECIAL VENTILATION .................................................................................................................. 43

4.1.2.3 CO2 PROGRAM .............................................................................................................................. 45

4.1.2.4 EMERGENCY ................................................................................................................................. 47


4.1.2.5 FRESH AIR TREATMENT ................................................................................................................ 47

4.1.3 HISTORY ...................................................................................................................................... 48

4.1.3.1 EVENTS ......................................................................................................................................... 48

4.1.3.2 ALARM HISTORY ........................................................................................................................... 49

4.1.3.3 SENSORS HISTORY ........................................................................................................................ 49

4.1.3.4 HISTORY SETUP ............................................................................................................................ 50

4.1.3.5 SENSORS HISTORY ERASE ............................................................................................................. 51

4.1.3.6 RAIN COLLECT HISTORY ............................................................................................................... 51

4.1.4 CASE STUDIES – GENERAL ............................................................................................................ 52

4.1.4.1 CASE STUDIES DISCLAIMER .......................................................................................................... 52

4.1.4.2 TEMPERATURE AND HUMIDITY RANGES ..................................................................................... 52

4.1.4.3 INTERLINKED INLFUENCES OF NMC CLIMATE CONTROL MENUS ................................................ 53

4.1.5 CASE STUDY – NATURALLY VENTILATED GREENHOUSE ................................................................. 54

4.1.5.1 STEP 1 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE - CONFIGURATION ................. 56

4.1.5.2 STEP 2 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – TEST .................................... 59

4.1.5.3 STEP 3 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – ALARM ................................ 59

4.1.5.4 STEP 4 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – MANAGEMENT ................... 59

4.1.5.5 STEP 5 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – USER ................................... 60

4.1.6 CASE STUDY – FORCE VENTILATED GREENHOUSE ......................................................................... 67

4.1.6.1 STEP 1 – CASE STUDY – FORCE VENTILATED GREENHOUSE – CONFIGURATION......................... 69

4.1.6.2 STEP 2 – CASE STUDY – FORCE VENTILATED GREENHOUSE – TEST ............................................. 70

4.1.6.3 STEP 3 – CASE STUDY – FORCE VENTILATED GREENHOUSE – ALARM ......................................... 70

4.1.6.4 STEP 4 – CASE STUDY – FORCE VENTILATED GREENHOUSE – MANAGEMENT ........................... 70

4.1.6.5 STEP 5 – CASE STUDY – FORCE VENTILATED GREENHOUSE – USER ............................................ 70


LIST OF TABLES

TABLE 1. MAIN CLIMATE CONTROL FEATURES – NMC 64 VS. NMC JUNIOR ............................................. 9

TABLE 2. KEYPAD BUTTONS ..................................................................................................................... 12

TABLE 3. NMC CLIMATE MENU STRUCTURE ............................................................................................ 16

TABLE 3. INTERLINKED CLIMATE INFLUENCES ......................................................................................... 53

TABLE 4. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – DAY/NIGHT INFLUENCE ON TEMPERATURE AND HUMIDITY FOR USE WITH 1.1 VENT PROGRAM ..................................................... 61

LIST OF FIGURES

FIGURE 1: MAIN MENU SCREEN .............................................................................................................. 11

FIGURE 2: KEYPAD PICTURE ..................................................................................................................... 12

FIGURE 3. NMC 64 - WARM RESET .......................................................................................................... 13

FIGURE 4. NMC JUNIOR - WARM RESET .................................................................................................. 14

FIGURE 5: CLIMATE PROGRAM SELECTION SCREENSHOT ....................................................................... 17

FIGURE 6: CLIMATE PROGRAM MENU LIST SCREENSHOT ....................................................................... 17

FIGURE 7: VENTS PROGRAM SCREENSHOT ............................................................................................. 20

FIGURE 8: HUMIDITY INFLUENCE EXAMPLE ............................................................................................ 20

FIGURE 9. SIDE VENT 100% OPEN AND 0% CLOSED – WHEN THE VENT COVER UNROLLS FROM THE TOP DOWN TO CLOSE ....................................................................................................................... 22

FIGURE 10. SIDE VENT 100% OPEN AND 0% CLOSED – WHEN THE VENT COVER ROLLS FROM THE BOTTOM UP TO CLOSE ..................................................................................................................... 22

FIGURE 11: FANS OPERATION PROGRAM SCREENSHOT ......................................................................... 24

FIGURE 12: HEATING PROGRAM SCREENSHOT ....................................................................................... 26

FIGURE 13. SCREEN PROGRAM SCREENSHOT ......................................................................................... 28

FIGURE 14. SCREEN 100% SPREAD AND 0% ROLLED-UP ......................................................................... 30

FIGURE 15. FOGGING PROGRAM SCREENSHOT ...................................................................................... 32

FIGURE 16. COOLING PAD PROGRAM SCREENSHOT ............................................................................... 34

FIGURE 17. COOLING PAD BEHAVIOR GRAPH ......................................................................................... 34

FIGURE 18. MISTING SCREENSHOT .......................................................................................................... 36

FIGURE 19. CIRCULATORS SCREENSHOT .................................................................................................. 38

FIGURE 20. CLIMATE PROCESS MENU SCREENSHOT ............................................................................... 40

FIGURE 21. HUMIDITY TREATMENT SCREENSHOT .................................................................................. 42

FIGURE 22. SPECIAL VENTILATION SCREENSHOT .................................................................................... 44


FIGURE 23. CO2 PROGRAM SCREENSHOT ................................................................................................ 46

FIGURE 24. EMERGENCY SCREENSHOT .................................................................................................... 47

FIGURE 25. FRESH AIR TREATMENT SCREENSHOT................................................................................... 47

FIGURE 26. HISTORY MENU SCREENSHOT ............................................................................................... 48

FIGURE 27. EVENTS HISTORY SCREENSHOT ............................................................................................. 48

FIGURE 28. ALARM HISTORY SCREENSHOT ............................................................................................. 49

FIGURE 29. SENSORS HISTORY SCREENSHOT........................................................................................... 49

FIGURE 30. HISTORY SETUP SCREENSHOT ............................................................................................... 50

FIGURE 31. SENSORS HISTORY ERASE SELECTION SCREENSHOT ............................................................. 51

FIGURE 32. RAIN HISTORY SCREENSHOT ................................................................................................. 51

FIGURE 33. GREENHOUSE TEMPERATURE AND HUMIDITY RANGES ....................................................... 52

FIGURE 34. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 3D GRAPHIC ................................ 54

FIGURE 35. CASE STUDY – NATURALLY VENTILATED GREENHOUSE LAYOUT ......................................... 55

FIGURE 36. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.4 TEMPERATURE SETTING SCREENSHOT ............................................................................................................................................ 56

FIGURE 37. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.5 WIND/RAIN PROGRAM SCREENSHOT ............................................................................................................................................ 57

FIGURE 38. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – WIND DIRECTION DIAGRAM ...... 57

FIGURE 39. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – WIND/RAIN PROGRAM SETTINGS .................................................................................................................................................. 58

FIGURE 40. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.6 VENTS OPERATION SCREENSHOT ............................................................................................................................................ 58

FIGURE 41. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.7.2 CIRCULATORS SCREENSHOT ............................................................................................................................................ 58

FIGURE 42. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 5.2 FAULTS SCREENSHOT ........... 59

FIGURE 43. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 4.1 CLOCK SCREENSHOT ............. 59

FIGURE 44. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 2.4 EMERGENCY SCREENSHOT ............................................................................................................................................ 60

FIGURE 45. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.1 VENT PROGRAM SCREENSHOT ............................................................................................................................................ 61

FIGURE 46. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – TEMPERATURE HUMIDITY INFLUENCE FOR USE WITH 1.1 VENT PROGRAM ..................................................................................... 61

FIGURE 47. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – NMCNET VENT SCREENSHOT ............................................................................................................................................ 62

FIGURE 48. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – NMCNET VENT POSITION SCREENSHOT ............................................................................................................................................ 62


FIGURE 49. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.2 FANS OPERATION PROGRAM SCREENSHOT .......................................................................................................................... 63

FIGURE 50. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.4 SCREEN PROGRAM SCREENSHOT ............................................................................................................................................ 64

FIGURE 51. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.5 FOGGING PROGRAM SCREENSHOT ............................................................................................................................................ 65

FIGURE 52. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – OFF TIME VS. TEMPERATURE IN THE FOGGING PROGRAM ........................................................................................... 65

FIGURE 53. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.8 CIRCULATORS SCREENSHOT ............................................................................................................................................ 66

FIGURE 54. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 2.1 HUMIDITY TREATMENT SCREENSHOT ............................................................................................................................................ 66

FIGURE 55. CASE STUDY – FORCE VENTILATED GREENHOUSE – 3D GRAPHIC ........................................ 67

FIGURE 56. CASE STUDY – FORCE VENTILATED GREENHOUSE – LAYOUT ............................................... 68

FIGURE 57. CASE STUDY – FORCE VENTILATED GREENHOUSE – 7.4 TEMPERATURE SETTING SCREENSHOT ............................................................................................................................................ 69

FIGURE 58. CASE STUDY – FORCE VENTILATED GREENHOUSE – 7.6 VENTS OPERATION SCREENSHOT ............................................................................................................................................ 69

FIGURE 59. CASE STUDY – FORCE VENTILATED GREENHOUSE – 7.7.2 CIRCULATORS SCREENSHOT ...... 69

FIGURE 60. CASE STUDY – FORCE VENTILATED GREENHOUSE – 5.2 FAULTS SCREENSHOT .................... 70

FIGURE 61. CASE STUDY – FORCE VENTILATED GREENHOUSE – 4.1 CLOCK SCREENSHOT ..................... 70

FIGURE 62. CASE STUDY – FORCE VENTILATED GREENHOUSE – 2.4 EMERGENCY SCREENSHOT ........... 70

FIGURE 63. CASE STUDY – FORCE VENTILATED GREENHOUSE – FAN STAGES, PAD AND CURTAIN (VENT) OPERATION .................................................................................................................................. 71

FIGURE 64. CASE STUDY – FORCE VENTILATED GREENHOUSE – FANS, PAD AND CURTAIN (VENT) AND INSIDE TEMPERATURE ..................................................................................................................... 73

FIGURE 65. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.2 FANS OPERATION PROGRAM SCREENSHOT ............................................................................................................................................ 73

FIGURE 66. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.4 SCREEN PROGRAM SCREENSHOT ............................................................................................................................................ 74

FIGURE 67. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.6 COOLING PAD PROGRAM SCREENSHOT ............................................................................................................................................ 74

FIGURE 68. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.8 CIRCULATORS SCREENSHOT ......... 75

FIGURE 69. CASE STUDY – FORCE VENTILATED GREENHOUSE – 2.1 HUMIDITY TREATMENT SCREENSHOT ............................................................................................................................................ 75


INDEMNITY Netafim South Africa (Pty) Ltd has taken all reasonable care in ensuring the integrity and reliability of the information contained in this document. Despite this Netafim South Africa (Pty) Ltd. takes no responsibility for any damage or loss that may result from the use of this manual. This document should be regarded as the property of Netafim South Africa (Pty) Ltd. This document is not intended for further training and neither may it be reproduced nor copied in its current form or temporary form. This document may not be revealed and/or carried over to any third party without the explicit written consent of Netafim South Africa (Pty) Ltd. This document is presented with the exclusive aim of notifying selected potential clients regarding USER MANUAL – NMC – CLIMATE CONTROL. Receipt or the possession of this document does not imply rights and the contents should be viewed as a proposal only. This document is neither issued as a guarantee, nor does it confirm any legal obligations on Netafim South Africa (Pty) Ltd whatsoever. Netafim South Africa (Pty) Ltd reserves the right to make changes in its products and in the USER MANUAL – NMC – CLIMATE CONTROL without prior notice. DOCUMENT INFORMATION Version: 3.00 Last updated: 01 February 2012 ACKNOWLEDGEMENTS Netafim South Africa


4.1.0 INTRODUCTION

This section of the CMT manual can be used for the software of both the NMC 64 and the NMC Junior. It is written as though the NMC 64 is the product software being used. The NMC Junior uses the same software format as the NMC 64; however the software is constrained by the limitations of the NMC Junior’s hardware. Where the NMC Junior differs, these limitations or differences are explained in a ‘JR’ box as follows beneath.

This box explains the differences or limitations of the NMC Junior as they occur in the manual.

The Netafim NMC 64 Climate Controller manages vents, fans, heaters, thermal screens, foggers, cooling pads and more. The controller also manages different climate processes such as humidity treatment, special ventilation, fresh air treatment and more. This section of the CMT Manual describes the NMC 64 programming and operating procedures. Prior to using the controller in your facility, you will need to complete its hardware installation (see Section 2.1 Installation – Hardware – NMC Junior or Section 2.2 Installation – Hardware – NMC 64/Pro) as well as its software installation (see 3.1 Installation – Software – NMC Climate).

Once the controller is installed, configured, set-up and tested, all relevant menus will be available for use. All values indicated in this manual are in SI (metric) units.

The NMC Climate Control Software has 7 menus as laid out in Table 3. In everyday use, the user of the controller will only use the first three of these (Menus 1 to 3). However, prior to using them, the installation of the software must be complete. This software installation is handled using the second set of 4 menus (Menus 4 to 7) (see 3.1 Installation – Software – NMC Climate).

This section of the CMT Manual only deals with the first set of 3 menus (Menus 1 to 3). (For the second set of 4 menus, see section 3.1 Installation – Software – NMC Climate).

NB

JR

NB

NB


4.1.0.1 GENERAL DESCRIPTION

• The Netafim NMC 64 is a top of the line climate controller. • NMC 64 main hardware features:

o 24VAC outputs. o Digital inputs: Rain sensors, wind speed. o Analogue inputs: Temperature and humidity, wind direction, radiation. o Local or remote communication to PC.

• The advanced large LCD graphic screen (40x16 lines) makes the NMC 64 user-friendly and easy to operate and program.

Wind and radiation sensors cannot be connected to the NMC Junior.

JR


4.1.0.2 MAIN FEATURES TABLE 1. MAIN CLIMATE CONTROL FEATURES – NMC 64 VS. NMC JUNIOR

Main features NMC 64 NMC Junior

Vents / curtains program – open or close 16 7

Fan groups / stages program 4 4

Heaters program – on/off 4 4

Screens program (temperature or radiation) – open (roll-up) 2 2

Screens program (temperature or radiation) – close (roll-out) 2 2

CoolNet program – active window 1 1

CoolNet program – curve points 4 4

CoolNet valves - outputs 4 4

Cooling pad program – active window 1 1

Cooling pad program – curve points 4 4

Cooling pad pump program 1 1

Misting program 40 40

Misting valves - outputs 30 15

Circulator fans program 4 4

Humidity treatment process 4 4

Special ventilation process 4 4

Fresh air treatment program 4 4

Emergency program 1 1

Alarm program 1 1

CO2 valve program 1 1

Rain collector – digital input 1 1

Rain sensor – digital input 1 1

Wind speed – digital input 1 1

Wind direction – analogue input * 1 0

Radiation sensor – Davis – analogue input * 1 0

CO2 sensor – analogue input 1 1

Temperature sensors – analogue input 8 2

Relative humidity sensors - 8 1 PC communication and HMI

Yes Yes Outputs and inputs test

Yes No

The NMC Junior is limited to 15 x outputs, 6 x digital inputs and 5 analogue inputs. * Inputs that cannot be received directly by the NMC Junior, can be received indirectly via an NMC 64 to which the NMC Junior is linked in a network. (See 7.1 Communication Hardware)

JR


4.1.0.3 NMC JUNIOR / 64 GENERIC OPERATION GUIDELINES Operating the NMC Junior / 64 is very simple and intuitive. Use the following guideline for easy operation: To change specific settings navigate the cursor (flashing underline mark) using the arrow keys until its location is under the relevant setting. According to type of field (value, list of options, etc.) change setting as follows:

• Value - use the numeric keys to change the value and press ENTER to confirm. • List of Options - press ENTER to open the List of Options, use the arrow keys to navigate the

cursor to the desired field and press ENTER again to confirm. • HH:MM:SS - set hours, press the ENTER key to move to the minutes, set the minutes, press

ENTER again to move to the seconds. • Factors - use the left and right arrows to change the factor up and down respectively. • To erase typing mistakes, use the DELETE key

Remember to confirm changes by pressing the ENTER key. If you do not confirm, the new value will not be saved and the controller will revert to the previous value

NB


4.1.0.4 MAIN MENU SCREEN Press the MENU key until you reach the Main Menu screen. The main menu screen consists of 5 sections:

• Sensors – This section of the screen shows individual sensors readings. Sensors shown are defined by the user in 3.1.4.6 CUSTOMISE MAIN SCREEN.

• Inside – This section shows average inside temperature and humidity. • Active – This part shows active devices. • Status – This section shows general information, such as time and date, and active climate

processes. • Messages – This section shows messages, if there are a few active messages than they

appear in turn.

SENSORS INSIDE ACTIVE Temp-1 24.9 TEMP: 25.1 Temp-2 25.3 HUM.: 71.1 Vent 1 100% Out T. ---- Fan 1 Out Hum ---- STATUS C. Fan 1 Rad. 134 10:11:18 Scr. 1 90% W. Speed 0 21-Aug-06 Heat. 1 W. Dir. 0 Mist. 1 CO2 992 CO2 1 Fogg. 1 Pad 1 Alarm 1 MESSAGES [ 1 ] External Alarm 1

FIGURE 1: MAIN MENU SCREEN


4.1.0.5 USE OF THE KEYPAD

FIGURE 2: KEYPAD PICTURE Keypad buttons usage

Key Description

Help Using the Help key you can access help screens and graphs. If not indicated otherwise press the ‘Menu’ key to exit the ‘Help’ menu.

Menu (Back) The Menu key is used to exit screens and menus you are currently in.

Delete The Delete key enables to erase typing mistakes.

Arrow The Arrow keys move the cursor around the menus, inside screens and in some cases can be used to change values.

‘+/-‘ The '+/-' key changes between positive and negative values and marks the check boxes when selecting options.

‘.’ The ‘.’ key enables to enter a decimal point.

Numbers The Numeric keys enable to enter numbers and make selections in the numbered

Enter The Enter key acknowledges your entry or menu selection.

TABLE 2. KEYPAD BUTTONS


4.1.0.6 RESETTING NMC CONTROLLER In the unlikely event that the controller software for example “freezes” or a software setting change is not implemented, the controller could require a reset. The NMC Controller can be reset by:

• 1) Warm Reset or • 2) Cold Start.

4.1.0.6.1 WARM RESET

• During a Warm Reset the controller CPU is restarted. The program and configuration settings will not be lost.

• It is recommended to perform this procedure before doing a Cold Start. • To perform a Warm Reset, stop all active irrigation processes and then depress the reset

button on the CPU. The reset button can be released when no text is displayed on the controller screen.

• After the Warm Reset procedure has ended, the NMC Controller will return to the MAIN screen.

FIGURE 3. NMC 64 - WARM RESET

Warm reset button


FIGURE 4. NMC JUNIOR - WARM RESET

Warm reset button. This button is underneath a steel protective cover. The cover is not shown in this diagram. The reset button can be accessed without removing the cover.


4.1.0.6.2 COLD START

• Cold Start resets the NMC Controller to the original factory settings. This procedure should be performed:

o After upgrading the controller software version o When reinstalling the controller o After adding input or output cards o When instructed by a Netafim technician

All program and configuration settings will be lost, it is therefore recommended to perform a back-up to the Data Plug before starting this procedure. See section 4.4 SAVE TO DATA PLUG for instructions on performing the back-up and section 4.5 READ FROM DATA PLUG to restore controller settings.

• To perform a cold start:

o Disconnect the NMC Controller power supply. o Turn power on while depressing the DELETE key until the COLD START pop-up screen

appears. If you choose “NO”, the NMC Controller will continue to its usual power-up

procedure and the settings will remain untouched. If you choose “YES”, NMC Controller will perform the cold start procedure

and the controller will start with RAM and EPROM cleaning procedure. All controller settings will be erased and restored back to default factory settings. All history will be erased.

• After the Cold Start procedure has ended, the NMC Controller will return to the MAIN screen

4.1.0.7 ANALOGUE INPUTS Analogue inputs are received from an analogue sensor as either a voltage or a current. However a computer cannot read such a value without it being converted to a digital number. The analogue inputs in several of the NMC software’s screens such as ‘Status’ and ‘Test’ screens are displayed in values which are labelled as ‘A/D’. ‘A/D’ = Analogue-to-digital converter This simply means analogue-to-digital converter and the values displayed in these screens are numbers that can be read by a computer: in this case the NMC Controller. The numbers themselves have no unit of measurement. They are more like a code, which the controller is pre-programmed to read.

NB


4.1.0.8 NMC CLIMATE CONTROL MENU STRUCTURE TABLE 3. NMC CLIMATE MENU STRUCTURE

1. CLIMATE PROGRAM

2. CLIMATE PROCESS

3. HISTORY 4. MANAGEMENT* 5. ALARM* 6. TEST* 7. CONFIGURATION (NMC 64)*

7. CONFIGURATION (NMC JUNIOR)**

1.1 Vents 2.1 Humidity Treatment

3.1 Events 4.1 Clock 5.1 Alarm / Fault Reset

6.1 Output 7.1 Outputs Definition

7.1 Outputs Definition

1.2 Fans Operation

2.2 Special Ventilation

3.2 Alarm History 4.2 Calibration 5.2 Faults Setting

6.2 Digital Input 7.2 Relay Layout 7.2 Relay Layout

1.3 Heating 2.3 CO2 3.3 Sensors History

4.2.1 Temperature Sensors

6.3 Analogue Input 7.3 Input Setting 7.3 Digital Input

1.4 Screen 2.4 Emergency 3.4 History Set-up 4.2.2 RH Sensors 6.4 Sensors 7.3.1 Socket Setting 7.4 Analogue Input 1.5 Fogging 2.5 Fresh Air

Treatment 3.5 Sensors History Erase

4.2.3 CO2 Sensors 6.4.1 Temperature Sensors

7.3.2 Socket 1 7.5 Temperature Setting

1.6 Cooling Pad 3.6 Rain Collect History

4.2.4 Weather Sensors 6.4.2 RH Sensors 7.3.3 Socket 2 7.6 Wind Program

1.7 Misting 4.3 Language 7.3.4 Socket 3 7.7 Vents Operation 1.8 Circulation 4.4 Save to Data Plug 7.4 Temperature

Setting 7.8 General Setting

* Menus 4 to 7 are dealt with in Section 3.1 INSTALLATION – SOFTWARE – NMC CLIMATE

4.5 Read from Data Plug 7.5 Wind program 7.8.1 Set Parameters 4.6 Custom. Main Screen 7.6 Vents

7.8.2 Circulators

4.6.1 Sensors 7.7 General Setting 7.8.3 Weather Sensor Set 4.6.2 Active 7.7.1 Set

Parameters

** There are no input card sockets in the NMC Junior. It has fixed digital and analogue inputs. As a result, Menu 7 in the NMC Junior has different sub-menus and sub-menu index numbers.

7.7.2 Circulators

7.7.3 Weather sensor set

JR

NB


4.1.1 CLIMATE PROGRAM When main menu screen appears place the cursor on the first line, CLIMATE PROGRAM and press ENTER. You can also reach the menu by pressing the number indicated next to the program.

MAIN MENU 1. CLIMATE PROGRAM > 2. CLIMATE PROCESS

>

3. HISTORY

> 4. MANAGEMENT

>

5. ALARM

> 6. TEST

>

7. CONFIGURATON >

FIGURE 5: CLIMATE PROGRAM SELECTION SCREENSHOT

When entering the CLIMATE PROGRAM, the following submenu will appear:

CLIMATE PROGRAM 1. VENTS 2. FANS OPERATION 3. HEATING 4. SCREEN 5. FOGGING 6. COOLING PAD 7. MISTING 8. CIRCULATORS

FIGURE 6: CLIMATE PROGRAM MENU LIST SCREENSHOT

To enter any of the menus, press the corresponding numeric key or scroll to the desired item using the UP/DOWN arrows keys and press ENTER; a new window will appear. For example the first menu under CLIMATE PROGRAM is VENTS.

NB


4.1.1.1 VENTS 4.1.1.1.1 VENTILATION PROGRAM Define a ventilation program:

• DAY t⁰ START OPEN – Temperature to open the vent at day time. • DIFF. DAY / NIGHT FOR FULLY OPEN – Select the differential temperature to fully open vents.

The differential value keeps the system balanced. Example: At a temperature of 20°C the vent will be closed. At a temperature of 30°C the vent will be fully opened (100%). If the temperature is 21°C then the vent will partially open to 10%. Likewise, at 27°C the vent will open to 70%.

• NIGHT t⁰ OPEN – Temperature to open vents at night time. • HUMIDITY INFLUENCE – Humidity influence for vent opening. When set to NO, the humidity

influence is disabled. When set to YES, the Day/Night humidity influences on the set point temperature can be defined.

• There are four points of humidity percentages in the day influence and four for night influence that need to be defined with the corresponding temperature difference to be set.

• See Section 3.1.4.1 Installation – Software – NMC Climate for the definition of Night time.

See Section 3.1.7.7 Installation – Software – NMC Climate for additional information regarding the vents operation.

NB


VENT PROGRAM VENT 1 2 3 4 ... 16 DAY t° START OPEN 20.0 20.0 20.0 20.0 ... 20.0 DIFF FOR FULLY OPEN 2.0 2.0 2.0 2.0 ... 2.0 NIGHT t° START OPEN 30.0 30.0 30.0 30.0 ... 30.0 DIFF FOR FULLY OPEN 2.0 2.0 2.0 2.0 ... 2.0 HUMIDITY INFLUENCE YES YES YES YES ... YES IN ORDER TO VIEW HUMIDITY INFLUENCE TABLE PRESS <DOWN> ARROW WHEN REACHING BOTTOM LINE. HUM TEMP DAY INFLUENCE 65 2.0 75 1.0 85 -1.0 95 -2.0 NIGHT INFLUENCE 65 1.0 95 -1.0 95 -1.0 95 -1.0

FIGURE 7: VENTS PROGRAM SCREENSHOT

FIGURE 8: HUMIDITY INFLUENCE EXAMPLE

2°C increase

1°C increase

1°C decrease

2°C decrease

15

16

17

18

19

20

21

22

23

60 65 75 85 95 100 Humidity %

°C

Temperature set point for ventilation

Calculated ventilation temperature


4.1.1.1.2 CALIBRATION OF VENTS

• Set the greenhouse’s switchboard ‘H-O-A’ switch to ‘H’ manual position. Close the vent and ensure that the limit switch is correctly set.

• Time the opening and closing period in seconds for each vent. This may be repeated to ensure the stability of the operation. Add a few seconds (maximum 6) to the measured period.

• Test that the NMC Climate controller is activating the correct relays. Set the switchboard ‘H-O-A’ switch back to ‘A’ auto position. Go to TEST menu at 6.1 RELAY. Test each vent using the left and right arrow keys to change the STATUS.

• Calibrate the vent to the correct position. Set the switchboard ‘H-O-A’ switch to ‘H’ manual position. Ensure that all vents are either 100% open or 0% closed. (The temperature setting may be required to be changed to force this action). Set the switchboard’s ‘H-O-A’ switch back to ‘A’ auto.

• Set the controller settings. o 7.6 VENTS OPERATION o 1.1 VENT PROGRAM o 4.1 CLOCK – set BEGIN DAY and BEGIN NIGHT


FIGURE 9. SIDE VENT 100% OPEN AND 0% CLOSED – WHEN THE VENT COVER UNROLLS FROM THE TOP DOWN TO CLOSE

FIGURE 10. SIDE VENT 100% OPEN AND 0% CLOSED – WHEN THE VENT COVER ROLLS FROM THE BOTTOM UP TO CLOSE

100% = OPEN

VENT COVER

0% = CLOSED

100% = OPEN

AIR EXCHANGE

VENT COVER

AIR EXCHANGE

0% = CLOSED


4.1.1.2 FANS OPERATION PROGRAM The NMC 64 is designed to control a large number of fans. That is why the FANS OPERATION PROGRAM controls groups of fans rather than single fans. You can program up to 4 groups of fans, a single output for each group. Figure 9 illustrates a FAN OPERATION PROGRAM with two groups.

• DAY t⁰ OPER – Day temperature above which fans will start to operate. • DIFF. t⁰ TO STOP – Differential below the DAY t° OPER to stop fans operation. • L.OUT t⁰ TO STOP – Outside temperature below which fans will be stopped. • H.OUT RH TO STOP – Outside relative humidity above which fans will be stopped. • IF COOL PAD OPER. –Temperature above which fans will be turned On when cooling pad

process is active. • DIFF. t⁰ TO STOP – Differential below the IF COOL. PAD OPER. to stop fans operation. • DURING %RH TREAT (YES/NO) – Define whether fans can be turned On during RH treatment. • CIRC.FAN OPER (YES/NO) – Define whether fans can be turned On during circulators

operation. • DURING FRESH AIR (YES/NO) – Define whether fans can be turned On during during fresh air

treatment. • DURING SPEC. VENT (YES/NO) – Define whether fans can be turned On during special

ventilation. • STOP DURING CO2 (YES/NO) – Define whether fans can be turned On during CO2

enrichment.

Example: It is day time and the inside temperature starts to increase. According to the values in the table below, Fan Group 1 will begin operating at 26⁰C, Fan Group 2 will begin operating at 27⁰C. If the temperature was to decrease to 24.9⁰C only Fan Group 2 would stop, since in both groups the differential from target temperature is set to 2⁰C. Thus, in Group 1 the differential is 2⁰C (26⁰-24.9⁰=1.1⁰) which is smaller than 2⁰ meaning fan operation will continue. In Group 2 the target temperature is set to 27⁰C, meaning the differential is above 2⁰C and therefore fan operation will stop.


FANS OPERATION PROGRAM FANS GROUP 1 2 3 4 DAY t° OPER. 26.0 27.0 27.0 27.0 DIFF. t° TO STOP 2.0 2.0 2.0 2.0 NIGHT t° OPER. 30.0 30.0 30.0 30.0 DIFF. t° TO STOP 2.0 2.0 2.0 2.0 L. OUT. t° TO STOP 10.0 10.0 10.0 10.0 H. OUT. %RH TO STOP 80.0 80.0 80.0 80.0 IF COOL. PAD OPER. 30.0 30.0 30.0 30.0 DIFF. t° TO STOP 2.0 2.0 2.0 2.0 DURING %RH TREAT. YES NO NO NO CIRC. FAN OPER. YES YES YES YES DURING FRESH AIR YES NO NO NO DURING SPEC. VENT. NO YES YES YES STOP DURING C02 YES YES YES YES

FIGURE 11: FANS OPERATION PROGRAM SCREENSHOT


4.1.1.3 HEATING The HEATING PROGRAM can be divided into three parts:

• Lines 1 to 3; day and night operation temperatures. Only active if no periods have been defined, see next point.

• Lines 4 to 15; divide the day to periods, up to four, for each period define operation temperatures. In case the periods are defined these settings will override the day and night operation temperatures.

• Lines 16 to 19; the heating program interface to other climate process, such as: fans operation, misting, humidity treatment and CO2 enrichment.

Settings explanation:

• HEATER No. – It is possible to connect up to four heaters. • DAY t⁰ OPER. – Set the day time temperature below which the relevant heater will be

started. • NIGHT t⁰ OPER. – Set the night time temperature below which the relevant heater will be

started. • START TIME (1…4) – Define the period start time. The day can be divided to a maximum of

four periods. • END TIME (1…4) – Define the period end time. • t⁰ TO OPER (1…4) – (Minimum value = -20⁰C). Set the temperature below which the relevant

heater will be started. This temperature is only relevant for the corresponding period. • STOP DURING FAN/MIST/%RH/CO2 – select yes/no to disable heaters operation during, fan

operation, misting, humidity treatment and CO2 enrichment.


HEATING PROGRAM HEATER No. 1 2 3 4 DAY t° OPER. 14.0 14.0 14.0 14.0 NIGHT t° 14.0 14.0 14.0 14.0 DIFF. TO STOP 2.0 2.0 2.0 2.0 START TIME 1 12:00 12:00 12:00 12:00 END TIME 1 15:00 15:00 15:00 15:00 t° TO OPER. 1 16.0 16.0 16.0 16.0 START TIME 2 16:00 16:00 16:00 16:00 END TIME 2 20:00 20:00 20:00 20:00 t° TO OPER. 2 15.0 15.0 15.0 15.0 START TIME 3 12:00 12:00 12:00 12:00 END TIME 3 15:00 15:00 15:00 15:00 t° TO OPER. 3 16.0 16.0 16.0 16.0 START TIME 4 12:00 12:00 12:00 12:00 END TIME 4 15:00 15:00 15:00 15:00 t° TO OPER. 4 16.0 16.0 16.0 16.0 STOP DUR. FAN NO NO NO NO STOP DUR. MIST. NO NO NO NO STOP %RH TREAT NO NO NO NO STOP DUR. C02 NO NO NO NO

FIGURE 12: HEATING PROGRAM SCREENSHOT


4.1.1.4 SCREEN 4.1.1.4.1 SCREEN PROGRAM The Screen sub-menu is divided to four sections:

• OPERATE BY SENSORS; define operation according to temperature or radiation. • OPERATE BY TIME; define time based operation. • SCREEN SETTING; define screen settings such as rollup time and step size. • SETTING PROCESS; define screen operation during processes.

In case of a conflict between the TIME and the SENSORS definitions, the TIME definitions will take priority.

• OPERATE BY SENSORS - Select method by which you want the thermal / shading screen to

function; Temperature or Radiation. o FULL SPREAD ABOVE – Select above which temperature / radiation level you want a

full spread of the thermal screen. o FULL ROLL UP BELOW - Select below which temperature / radiation level you want a

full roll up of the thermal screen. o SPREAD / ROLL UP DELAY – Set the number of seconds you want the program to wait

before initiating spreading or rolling up of the thermal screen. This feature enables more precise control. For example if a passing cloud happens to block the radiation sensor, the delay time prevents a sudden action.

• OPERATE BY TIME – As mentioned earlier, time based operation has priority over the sensors operation.

o SPREAD START – Set thermal screen spreading start time (24h format). o SPREAD END – Set thermal screen spread end time. The screen should be fully spread

by this time. o ROLL UP START - Set thermal screen roll up start time. o ROLL UP END – Set thermal screen roll up end time. The screen should be fully rolled

up by this time. • SCREEN SETTING – Technical definitions of the thermal screen.

o FULL TIME MOTOR OPER.SEC – Set the time it takes the thermal screen's motor to fully spread / roll the screen.

o % PER STAGE – Set the thermal screen's step size in percentage. If you want the screen to spread / roll in one step set this parameter to 100%. If you want the thermal screen to move in four steps set this parameter to 25%. The default setting is 33%, which means the thermal screen spreads and folds in three steps.

o MAXIMUM % SPREAD DAY / NIGHT– Set the thermal screen's day time maximum spread percentage.

o ROLL UP AFT.HEAT.(MM:SS) – Set the delay time after heating process for screens to roll up.

• SETTING PROCESS – Define the thermal screen activity during different climate processes; spread during heating, roll up during fans operation/spray/CO2.

NB


SCREEN PROGRAM THERMAL SCREEN No. 1 2 ---OPERATE BY SENSORS--- OPERATE BY RAD. TEMP. FULL SPREAD ABOVE 550 30.0 FULL ROLL UP BELOW 250 20.0 SPREAD DELAY (SEC.) 60 60 ROLL UP DELAY (SEC.) 60 60 ----OPERATE BY TIME----- SPREAD START (HH:MM) 00:10 10:00 SPREAD END (HH:MM) 20:00 12:00 ROLL UP START (HH:MM) 21:00 16:00 ROLL UP END (HH:MM) 09:00 21:00 -----SCREEN SETTING----- FULL TIME MOTOR OPER. SEC 90 180 % PER STAGE 33 100 MAXIMUM % SPREAD DAY 90 100 MAXIMUM % SPREAD NIGHT 100 100 ROLL UP AFT. HEAT. (MM:SS) 00:10 00:00 -----SETTING PROCESS----- SPREAD DURING HEATING YES YES ROLL UP DURING FANS NO NO ROLL UP DURING SPRAY NO NO ROLL UP DURING CO2 NO NO ROLL UP DURING RH TREAT. NO NO HIGH WIND ROLL UP NO NO SPREAD SCREEN DUR. NIGHT YES YES

FIGURE 13. SCREEN PROGRAM SCREENSHOT


4.1.1.4.2 SCREEN CALIBRATION

• Set the greenhouse’s switchboard ‘H-O-A’ switch to ‘H’ manual position. Spread the screen and ensure that the limit switch is set correctly. Roll-up the screen and ensure that the limit switch is set correctly.

• Time the spread and roll-up periods in seconds for each screen. This may be repeated to ensure the stability of the operation. Add a few seconds (maximum 6) to the measured period.

• Test that the NMC Climate controller is activating the correct relays. Set the switchboard ‘H-O-A’ switch back to ‘A’ auto position. Go to TEST menu at 6.1 RELAY. Test each screen using the left and right arrow keys to change the STATUS.

• Calibrate the screen to the correct position. Set the switchboard ‘H-O-A’ switch to ‘H’ manual position. Ensure that the screens are either 100% spread-out or 0% rolled-up. (The temperature setting may be required to be changed to force this action). Set the switchboard’s ‘H-O-A’ switch back to ‘A’ auto.

• Set the controller settings. o 1.4 SCREEN PROGRAM


FIGURE 14. SCREEN 100% SPREAD AND 0% ROLLED-UP

Screen width Screen width

100% = SPREAD 0% = ROLLED-UP


4.1.1.5 FOGGING This selection allows the user to set a fogging program. The parameters are explained below.

• START TIME (hh:mm – Set the fogging program start time. • STOP TIME (hh:mm) – Set the fogging program end time. • CURVE POINT – There are four curve points (columns), each point can be set differently thus

creating dynamic fogging. In the example shown in the table above (FIGURE 15) the second column has a higher start temperature, a longer ON time and a shorter OFF time, which means more “aggressive” fogging. The NMC Junior / 64 creates a line (curve) between the set points, thus creating a more stable control. It is recommended to set the curve points in a logical order, for example curve point number 1 has the lowest fogging temperature, a shorter On time and a longer Off time than curve point 2, etc.

o FROM t⁰ - Set the temperature above which fogging will be started. o TO RH% - Set the humidity level below which fogging will take place (providing the

measured temp is above the FROM to). o ON (sec) – Set the time the fogging valve/s will On for in each cycle. o /OFF (sec.) – Set the time the fogging valve/s will be Off for in each cycle. o

For example: 5 seconds On and 30 seconds Off is a 35 second cycle with 5 seconds operation and 30 seconds rest.

• t⁰ HYST – Differential below target temperature for stopping the fogging process. • BAND RH% - Set the humidity dead-band. If fogging process was stopped because of high RH

and the measured RH drops below TO RH% minus BAND RH%, fogging process will be reactivated.

• t⁰ OUT.STOP – Outside temperature below which fogging process will be turned Off. • RH%OUT.STOP – Outside humidity above which fogging process will be turned Off.


FOGGING PROGRAM START TIME. 00:00 STOP TIME 20:00 CURVE POINT 1

2

3

4

FROM t° 25.0 26.0 27.0 30.0 TO RH% 60.0 70.0 80.0 90.0 ON (sec.) 10 20 30 30 OFF (sec.) 20 30 40 60 t° HYST. 2.0 BAND RH% 5.0 t° OUT. STOP 10.0 RH% OUT. STOP 10.0

FIGURE 15. FOGGING PROGRAM SCREENSHOT


4.1.1.6 COOLING PAD This option enables the user to define a cooling pad program. The program consists of the following parameters:

• START TIME (hh:mm) – Set the cooling pad start time. • STOP TIME (hh:hh) – Set the cooling pad end time. • CURVE POINT – There are four curve points. Program the settings for each point (column): • FROM tº - Set the temperature above which Cooling pad will be started. • TO RH% - Set the RH level above which Cooling pad will be stopped. • t⁰ HYST – Differential below target temperature, if the measured temperature drops below

the FROM to minus the to HYST than the cooling pad will be stopped. • BAND RH% - Set the humidity dead-band. If cooling pad process was stopped because of high

RH and the measured RH drops below TO RH% minus BAND RH%, cooling pad process will be reactivated.

• t⁰ OUT.STOP – Outside temperature below which cooling pad process will be turned Off. • RH%OUT.STOP – Outside humidity above which cooling pad process will be turned Off.

There are 4 columns on the screen and they serve as backup programs in case each prior program is insufficient. The example below shows that the second column has a higher start temperature and a higher humidity level with it. The cooling pad will operate constantly at any time the humidity level in the greenhouse will be lower than the one set for the current temperature. The controller calculates the level of humidity between columns as shown in the graph.


COOLING PAD PROGRAM START TIME. 00:00 STOP TIME 20:00 CURVE POINT [1] [2] [3] [4] FROM t° 25.0 26.0 27.0 30.0 TO RH% 60.0 65.0 70.0 80.0 t° HYST. 2.0 BAND RH% 5.0 t° OUT. STOP 10.0 RH% OUT. STOP 10.0

FIGURE 16. COOLING PAD PROGRAM SCREENSHOT

FIGURE 17. COOLING PAD BEHAVIOR GRAPH


4.1.1.7 MISTING This sub-menu allows the user to program up to 40 misting programs. The parameters are as follows:

• PRG. – Program number column. There are up to 40 misting programs. • MIST – Configure a mist valve to a mist program. • START (HH:MM) – Set the misting program start time, begging of the time frame. • END (HH:MM) – Set the misting program end time, end of the time frame. • ON (SEC) – Set the number of seconds for mist operation. • OFF (HH:MM:SS) – Set the mist rest period.


MISTING PRG. MIST START END ON OFF HH: MM HH: MM SEC H: MM :SS 1 1 00: 00 10: 00 20 0: 03 :00 2 1 11: 00 15: 00 35 0: 06 :00 3 1 16: 00 17: 00 40 0: 30 :00 4 1 20: 00 21: 00 40 0: 46 :00 5 2 00: 00 20: 00 10 0: 20 :00 6 0 00: 00 00: 00 0 0: 00 :00 7 0 00: 00 00: 00 0 0: 00 :00 8 0 00: 00 00: 00 0 0: 00 :00 9 0 00: 00 00: 00 0 0: 00 :00 10 0 00: 00 00: 00 0 0: 00 :00 11 0 00: 00 00: 00 0 0: 00 :00 12 0 00: 00 00: 00 0 0: 00 :00 ... ... ... ... ... ... ... ... ... ... 40 0 00: 00 00: 00 0 0: 00 :00

FIGURE 18. MISTING SCREENSHOT


4.1.1.8 CIRCULATORS There are up to 4 circulator fans and 3 time periods for each circulator fan group. The parameters are explained below.

• GROUP – Circulator fan group. • START TIME (1…3) – Set the circulator program start time. Can be set differently for each

circulator group. • END TIME (1…3) – Set the circulator program end time. Can be set differently for each

circulator group. • LOW t⁰ TO OPER. – Set the temperature above which the circulator group will be started. If

this is set higher than HIGH t⁰ TO OPER below, then the circulators will be off. • HIGH t⁰ TO OPER. – Set the temperature below which the circulator group will be started. • DELTA t⁰ TO START – If there are two temperature sensors in the greenhouse the circulators

can be started on the basis of the difference between them; this feature is used to improve the homogeny in the greenhouse. This must always be at least 0.5⁰C higher than t⁰ HYSTERESIS below.

• %RH ABOVE (1…3) – Set the humidity value above which circulator activity will commence. • ON TIME (Min.) – Set operation time in minutes. • OFF TIME (Min) –Set pause time in minutes. • t⁰ HYSTERESIS – The temperature hysteresis works like a two sided differential. When

circulators are working and the temperature drops below low temperature operation, stopping point will be at low temperature minus hysteresis value. If temperature rises stopping temperature will be at high temperature plus hysteresis value.

• RH% HYSTERESIS – Set humidity hysteresis value. In this case if humidity level drops below the RH% above value, stopping humidity point will be at RH% minus RH% hysteresis value.


CIRCULATORS GROUP 1 2 3 4 START TIME 1 00:10 00:00 00:00 00:00 END TIME 1 10:00 00:00 00:00 00:00 LOW t° TO OPER. 1 30.0 0.0 0.0 0.0 HIGH t° TO PROPER. 1 20.0 0.0 0.0 0.0 DELTA t° TO START 1 0.0 0.0 0.0 0.0 %RH ABOVE 1 0.0 0.0 0.0 0.0 ON TIME 1 (MIN.) 1 0 0 0 OFF TIME 1 (MIN.) 15 0 0 0 START TIME 2 11:00 00:00 00:00 00:00 END TIME 2 15:00 00:00 00:00 00:00 LOW t° TO OPER. 2 0.0 0.0 0.0 0.0 HIGH t° TO PROPER. 2 0.0 0.0 0.0 0.0 DELTA t° TO START 2 0.0 0.0 0.0 0.0 %RH ABOVE 2 70.0 0.0 0.0 0.0 ON TIME 2 (MIN.) 2 0 0 0 OFF TIME 2 (MIN.) 15 0 0 0 START TIME 3 16:00 00:00 00:00 00:00 END TIME 3 20:00 00:00 00:00 00:00 LOW t° TO OPER. 3 0.0 0.0 0.0 0.0 HIGH t° TO PROPER. 3 0.0 0.0 0.0 0.0 DELTA t° TO START 3 0.0 0.0 0.0 0.0 %RH ABOVE 3 0.0 0.0 0.0 0.0 ON TIME 3 (MIN.) 00:00 00:00 00:00 00:00 OFF TIME 3 (MIN.) 00:00 00:00 00:00 00:00 t° HYSTERESIS 2.0 2.0 2.0 2.0 RH% HYSTERESIS 5.0 5.0 5.0 5.0

FIGURE 19. CIRCULATORS SCREENSHOT


4.1.2 CLIMATE PROCESS This shows the dark highlighting on “1.HUMIDITY TREATMENT” indicating that this option is selected. If you press Enter at this point, the NMC 64 will take you to the HUMIDITY TREATMENT menu. You can choose a different menu by using the arrow keys. Alternatively, you can press the indicated numeric key by each item. For example, pushing the ‘4’ key here will take you directly to the EMERGENCY menu.


MAIN MENU 1. CLIMATE PROGRAM > 2. CLIMATE PROCESS > 3. HISTORY

>

4. MANAGEMENT

> 5. ALARM

>

6. TEST

> 7. CONFIGURATON >

CLIMATE PROCESS 1. HUMIDITY TREATMENT 2. SPECIAL VENTILATION 3. CO2 4. EMERGENCY 5. FRESH AIR TREATMENT

FIGURE 20. CLIMATE PROCESS MENU SCREENSHOT


4.1.2.1 HUMIDITY TREATMENT

• PROGRAM (1…4) – Program number row, you can set up to four humidity treatment programs.

• START/END TIME – Start and end times (time frame) during which humidity treatment is active.

• HIGH %RH TO START – Set humidity level set point. Above this humidity level humidity treatment will commence.

• %RH DIFF. TO STOP – Set differential value (see example).

Example: if you set a humidity level of 70% and a differential of 5%, the humidity treatment will start only if the humidity level in the greenhouse rises over 70% but will go off only when the level lowers to 65%.

• ON/OFF TIME (min.) – Set the humidity level work cycle in minutes. • INSIDE/OUTSIDE LOW t⁰ TO STOP – Set value to stop humidity treatment, if inside or outside

temperatures drop below set point.


HUMIDITY TREATMENT PROGRAM 1 2 3 4 START TIME 00:00 06:00 00:00 00:00 END TIME 05:00 20:00 00:00 00:00 HIGH. %RH TO START 60 70 0 0 %RH DIFF. TO STOP 5 5 0 0 ON TIME (min.) 10 15 0 0 OFF TIME (min.) 30 60 0 0 INSIDE LOW t° TO STOP 10.0 10.0 0.0 0.0 OUTSIDE LOW t° TO STOP 10.0 10.0 0.0 0.0

FIGURE 21. HUMIDITY TREATMENT SCREENSHOT


4.1.2.2 SPECIAL VENTILATION The main purpose of the special ventilation program is to renew the air within the greenhouse. As seen below, the special ventilation program does not consider humidity levels. Special ventilation utilizes fans, together with vents. Note that there are up to 4 special programs. Their parameters are as follows:

• START TIME - The ventilation commencement operation time. The fans opposite side vents will open. In Sub-menu 7.7 VENTS OPERATION (see 3.1.7.7 Installation - Software – NMC Climate), program which vents you want to work during special ventilation. You also need to program on the same table the percentage of vent opening when fans work, that is programmed in Sub-menu 1.2 FAN OPERATION.

• WORK TIME – Work duration, in minutes.

Example: According to the screen above, the special ventilation will start at 08:00, work for 20 minutes and stop until the next start time. In this case the next start time is 21:00.

• INSIDE/OUTSIDE.LOW t⁰ TO STOP – Set the inside/outside low temperature for special ventilation to stop working. This definition is more of a safety boundary.


SPECIAL VENTILATION PROGRAM 1 2 3 4 START TIME 08:00 21:00 00:00 00:00 WORK TIME (min.) 20 30 0 0 INSIDE LOW t° TO STOP 10.0 10.0 0.0 0.0 OUTSIDE LOW t° TO STOP 10.0 10.0 0.0 0.0

FIGURE 22. SPECIAL VENTILATION SCREENSHOT


4.1.2.3 CO2 PROGRAM This option enables the user to program the amount of CO2. The parameters are explained below.

• START TIME (HH:MM) – Set the time of day for CO2 treatment to begin. • END TIME (HH:MM) – Set the time of day for CO2 treatment to terminate. • LOW RADIATION – Low radiation point to start the CO2 process. • CO2 AT LOW RADIATION – The amount of CO2 at low radiation point. • HIGH RADIATION – High radiation point to start the CO2 process • CO2 AT HIGH RADIATION – The amount of CO2 we want in the high radiation point. • CO2 STOP DIFF – Set the differential of the CO2 in order to avoid clicking the relay. • MAX INSIDE TEMP – Set the maximum inside temperature border, above which process will

not initiate. • STOP TEMP DIFF. – Set differential value to stopping temperature. CO2 treatment will

terminate at Max temperature value plus this value. • MAX VENT OPENING (%) – Set the vents' maximum opening percentage. • END PROCESS DELAY (MM:SS) – Set a delay time to end the process. • MAX HUMIDITY – Set maximum humidity border during the process. • HUMIDITY DIFF – Set humidity differential level. • MAX OUT TEMP – Set the maximum outside temperature border, above which process will

not initiate. • MAX WIND SPEED – Set the maximum outside wind speed border, above which process will

not initiate. • MINIMUM ON TIME (MM:SS) – Minimum CO2 treatment operation time. • MINIMUM OFF TIME (MM:SS) - Process minimum off time.

The CO2 treatment operates only between set start and end times. The CO2 enrichment level is set according to the radiation level; by setting high and low radiation borders with relative high and low CO2 enrichment levels. Below the low level of radiation, and above the high level, process will not commence. The NMC – Junior sets a linear line between the low and the high radiation set points and activates the CO2 according to the radiation level detected. High outside temperature, high inside temperature, high inside humidity or high wind speed can stop the process. The process will be activated by a set cycle as long as the CO2 level is below the programmed line. When the level is sufficient the process will stop.


CO2 PROGRAM START TIME (HH:MM) 00:00 STOP TIME (HH:MM) 16:00 LOW RADIATION 100 CO2 AT LOW RADIATION 40 HIGH RADIATION 500 CO2 AT HIGH RADIATION 1000 CO2 STOP DIFF. 50 MAX INSIDE TEMP 30.0 STOP TEMP DIFF 2.0 MAX VENT OPENING (%) 0 END PROCESS DELAY (MM:SS) 00:05 MAX HUMIDITY 100 HUMIDITY DIFF. 5 MAX OUT TEMP 0.0 MAX WIND SPEED 50 MINIMUM ON TIME (MM:SS) 00:00 MINIMUM OFF TIME (MM:SS) 00:00

FIGURE 23. CO2 PROGRAM SCREENSHOT


4.1.2.4 EMERGENCY Figure 21 presents the screenshot after selection this option. The parameters are explained below.

EMERGENCY WIND FOR VENT CLOSE 60 DELAY (sec.) 10 START FAN NUM. 2

FIGURE 24. EMERGENCY SCREENSHOT

• WIND FOR CURT.CLOSE – Set the emergency wind speed, for vents to close. • DELAY (sec.) – Set delay time from time of detection of emergency wind speed, until closing

the vents. The delay time ensures that there has been a steady wind speed increase, not just an isolated gust.

• START FAN NUM. – Select which fan group will operate while vents are closed. 4.1.2.5 FRESH AIR TREATMENT Figure 22 shows the screenshot after selection this option. The parameters are explained below.

FRESH AIR TREATMENT 1 2 3 4 FROM TIME 00:00 06:00 11:00 19:00 TO TIME 05:00 10:00 18:00 23:00 INTERVAL (MIN) 20 40 60 60 MIN. ON (MIN) 10 16 20 30

FIGURE 25. FRESH AIR TREATMENT SCREENSHOT

• FROM/TO TIME (HH:MM): Set the time of day for treatment to start and end (time frame). • INTERVAL (MIN): Set rest time period between on times. • MIN. ON (MIN): Set actual work time period in minutes.


4.1.3 HISTORY The history menu provides extensive information regarding measurements and processes done by the NMC 64 Climate.

MAIN MENU 1. CLIMATE PROGRAM > 2. CLIMATE PROCESS > 3. HISTORY > 4. MANAGEMENT

>

5. ALARM

> 6. TEST

>

7. CONFIGURATON >

HISTORY 1. EVENTS ALARM HISTORY 2. ALARM HISTORY 3. SENSORS HISTORY 4. HISTORY SETUP 5. SENSORS HISTORY ERASE 6. RAIN COLLECT HISTORY

FIGURE 26. HISTORY MENU SCREENSHOT

4.1.3.1 EVENTS This selection provides information of the all processes performed by the NMC 64 Climate including their time and date. Note that this table consists of 150 last events.

EVENTS HISTORY No. DATE TIME EVENTS 1 00/00 00:00 CURRENT BREAK 2 21/02 09:19 CURRENT BREAK 3 21/08 10:10 COLD START 4 5 6 7 8 9 10 11 ... ... ... ... 150

FIGURE 27. EVENTS HISTORY SCREENSHOT


4.1.3.2 ALARM HISTORY This option provides every alarm that took place from the last cold start is recorded. A blinking alarm is still active. Alarm number 1 is the last alarm to occur. Note that the table consists of 50 last alarms.

ALARM HISTORY No. DATE TIME FAULT 1 21/08/06 10:10 HIGH t° 2 21/08/06 10:16 MAX WAIT-MIST. 3 4 5 6 7 8 9 10 11 ... ... ... ... 50

FIGURE 28. ALARM HISTORY SCREENSHOT

4.1.3.3 SENSORS HISTORY This selection shows the sensors history readings according to the settings in the HISTORY SETUP Sub-menu 3.3.

56.7 ...

... ...

...56.7 ...

RH-2

56.7

56.7

56.7

56.7

56.7

...

25.8 24.2 25.6 22.625.9 24.3 25.7 22.6

56.7

56.7

56.725.12 24.625.8 24.2 25.6 22.6

... Rain56.7 ...

...

...

...

...

...

...

...

21/08 09:20... ...

21/08 09:2321/08 09:2221/08 09:21

25.8 24.2 25.6 22.6

25.8 22.625.6 22.6

60606060

...

25.10 22.6

25.8 24.2 25.6 22.6... ... ... ...

6060606060

Temp-422.6

RH-1606021/08 09:29

21/08 09:24

21/0821/0821/0821/08

22.6

09:2809:2709:2609:25

25.8 24.2 25.6 22.625.10 24.4

25.11 24.5 25.925.8 24.2

SENSORS HISTORYDATE TIME

21/08 10:15Temp-1 Temp-2 Temp-3

25.8 24.2 25.6

FIGURE 29. SENSORS HISTORY SCREENSHOT


4.1.3.4 HISTORY SETUP Use the up/down arrow keys to scroll the screen. Mark a '√' using the '+/-' key to activate data collection.

HISTORY SETUP Data To Collect Date √ Time √ Temp-1 • Temp-2 • Temp-3 • Temp-4 • Temp-5 • Temp-6 • Temp-7 • Temp-8 • RH-1 • RH-2 • RH-3 • RH-4 • RH-5 • RH-6 • RH-7 • RH-8 • t. in. min • t. in. av. • t. in. max • t. out. • %rh. min. • %rh. aver • %rh. max. • %rh. out. • Rad. min. • Rad. av. • Rad. max. • W. s. min. • W. s. aver • W. s. max. • CO2. min. • CO2. aver • CO2. max. • Rain •

FIGURE 30. HISTORY SETUP SCREENSHOT


4.1.3.5 SENSORS HISTORY ERASE This option enables the user to erase all history sensors. Select 'yes' to erase sensors history log. Select 'no' to go back to HISTORY Menu 3.

NOTE Are You sure? Yes No

FIGURE 31. SENSORS HISTORY ERASE SELECTION SCREENSHOT

4.1.3.6 RAIN COLLECT HISTORY This selection shows the quantity of rain in millimeters per day. Rain history collection is up to 365 days back.

RAIN HISTORY DATE RAIN 25-Aug-10 0.7 - - 0.0

FIGURE 32. RAIN HISTORY SCREENSHOT


4.1.4 CASE STUDIES – GENERAL 4.1.4.1 CASE STUDIES DISCLAIMER

This is a further note to the INDEMNITY outlined at the beginning of this document. The case studies in this manual are hypothetical examples used to demonstrate climate control concepts with the use of the NMC Climate Controller. Netafim South Africa (Pty) Ltd does not prescribe or necessarily recommend any of the settings, methods or concepts used in these case studies. Every greenhouse situation is unique and any recommendations in this regard should be from a suitably qualified expert.

4.1.4.2 TEMPERATURE AND HUMIDITY RANGES Broadly speaking, the temperature range for optimal plant growth in a controlled environment is between 18⁰C and 28⁰C with the relative humidity between 60% and 80%. The temperature would tend to be a minimum of 18⁰C at night and a maximum of 28⁰C during the day. The greenhouse strategy in these case studies targets these two ranges.

FIGURE 33. GREENHOUSE TEMPERATURE AND HUMIDITY RANGES

NB


4.1.4.3 INTERLINKED INLFUENCES OF NMC CLIMATE CONTROL MENUS TABLE 3. INTERLINKED CLIMATE INFLUENCES

Climate programs (user) Climate process (user) Installation settings

Vent

s

Fans

Ope

ratio

n

Heat

ing

Scre

ens

Fogg

ing

(Coo

lNet

Pro

)

Cool

Pad

Mist

ing

(Spi

nNet

)

Circ

ulat

ors

* %

RH T

reat

* Sp

ecia

l Ven

tilat

ion

CO2

Emer

genc

y

* Fr

esh

Air

Tem

pera

ture

Set

tings

Win

d/Ra

in P

rogr

am

Vent

Ope

ratio

n

Wea

ther

Sen

sor S

et

1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2.1 2.2 2.3 2.4 2.5 7.4 7.5 7.6 7.7.3

Wha

t inf

luen

ces t

hese

out

puts

? Vents √ 7.6 7.6 7.6 7.6 √ √ 7.6 √ √ √

Fans ** √ 1.2 1.2 1.2 1.2 1.2 √ 1.2 √

Heating 1.3 √ 1.3 1.3 1.3 √

Screen 1.4 1.4 √ 1.4 1.4 √

Fogging - CoolNet √ √

Cooling Pad √ √

Misting - SpinNet √

Circulators 7.7.2

7.7.2

√ √

CO2 Valve √ √

Tim

e

Clock : Day- Night √ √ √ √

Time Frame √ √ √ √ √ √ √ √ √ √

Time Operation Only

√ √ √

Sens

ors (

inpu

ts)

Inside Temp √ √ √ √ √ √ √ √ √ 7.4 √

Inside RH% √ √ √ √ √ √

Outside Temp √ √ √ √ √ √ √ √

Outside RH% √ √ √ √

Radiation √ √ √

Wind Speed 2.4 √ √ √ 7.5 √

Wind Direction √ √ √

Rain Collector √ 7.5 √

Rain Detector √ 7.5 √

CO2 2.3 √

Not

es

* Opens the vent opposite the opening percentage defined in table 7.6.

* Operates the fan group in table 1.2 when "Yes" is selected for the process.

Table 7.7.2 defines: "Circulators Configuration", which is not shown in this table.

Misting, fogging and weather station are connected in Table 7.7.1, which is not shown in this table.

** The vents are internally linked to the fans, so that the vents are always open during fan operation, except during storm mode.


4.1.5 CASE STUDY – NATURALLY VENTILATED GREENHOUSE

FIGURE 34. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 3D GRAPHIC This case study is based around a naturally ventilated 1 ha saw-tooth greenhouse with 24 x 6.4m wide x 68.0m long bays as shown in FIGURE 34. There is a 2.5m balcony on all four sides. The bays (crop rows) run in a north-south direction. The bays are split by one 2.0m pathway. The prevailing wind is from the northwest. Storm winds come from the southeast. It features the following, which are represented in a plan view in FIGURE 35.

• Roof vents – 1 per bay • Side curtains (side vents) – 1 on each side – 4 in total • Gable fans – 4 per gable side – 8 in total • Circulation fans – 2 per bay • Cooling valves – 4 in total • Screen – 1 in total • Temperature / humidity box – 1 per quarter of the greenhouse – 4 in total • Weather station:

o Wind direction o Wind speed o Outside temperature o Outside humidity o Radiation


FIGURE 35. CASE STUDY – NATURALLY VENTILATED GREENHOUSE LAYOUT

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

CIRCULATION FAN EDC24

LEGEND

MEASURING BOXVENTILATION FAN EM50N

PAD PUMPROOF VENT GEAR

COOLING PADLOUVRE SM24

SIDE MOTORS

GABLE FAN ED24

GABLE FAN - STORM EM36

SCREEN MOTORROOF MOTOR

COOLNET VALVE

SWITCH BOARDNMC CONTROLLER

NORTH(VENT 3)

SOUTH(VENT 1)

EAST(VENT 4)

WEST(VENT 2)

ROOF(VENT 5)

1FA

N S

TAGE

11

1

1FA

N S

TAGE

11

1

SE(STORM WIND)

NW(PREVAILING WIND)


4.1.5.1 STEP 1 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE - CONFIGURATION Follow Menu 7.1 to 7.4 to configure according to the definitions in FIGURE 35

7.4 TEMPERATURE SETTING (also RH%) FUNCTION Temperature sensors INSIDE 1 2 3 4 0 0 OUTSIDE 5 0 0 0 0 0 VENT 1 1 2 3 4 0 0 VENT 2 1 2 3 4 0 0 VENT 3 1 2 3 4 0 0 VENT 4 1 2 3 4 0 0 VENT 5 1 2 3 4 0 0 FANS 1 0 0 0 0 0 0 CIRCL. FAN 1 1 2 3 4 0 0 SCREEN 1 1 2 3 4 0 0 FOGGERS 1 1 2 3 4 0 0

FIGURE 36. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.4 TEMPERATURE SETTING

SCREENSHOT


Configure 7.5 and 7.6 together to relate the vents operation with wind and rain inputs.

FIGURE 37. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.5 WIND/RAIN PROGRAM SCREENSHOT

FIGURE 38. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – WIND DIRECTION DIAGRAM

RAIN

0%0%

0% 0%YES YES HIGH 8 0% 0%YES YES LOW 2 30% 0%

0%

WIND/RAIN STATUS PROGRAM7.5 WIND/RAIN PROGRAM

YES NO LOW 5 60% 0% 0% 0%NO YES HIGH 20 0% 0%

0% 0%0% 0%

0% 0%

NO YES LOW 5 60% 0%0% 0%NO NO HIGH 40 10% 0%

NO NO LOW 10 100%WIND DIR WIND SPEED P1 P2 P3 P4

1

2

30%

0% 0%YES NO HIGH 20 0%

0°N

60°

30°

90°

210

240° 120°

300°

270°

150°

360°

NE

180°S

W E

SESW

320°N


FIGURE 39. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – WIND/RAIN PROGRAM SETTINGS

7.6 VENTS OPERATION VENT (MAX 16) 1 2 3 4 5 OPENING TIME (SEC) 60 60 60 60 20 CLOSE TIME (SEC) 60 60 60 60 20 % PER STEP 10 10 10 10 33 DELAY TIME (SEC) 60 60 60 60 20 % DURING FAN (max) 100 100 100 100 100 % MIN. DURING %RH 100 100 100 100 100 % MIN. DURING PAD 100 100 100 100 100 WIND PROGRAM NUMBER 1 1 1 1 1 WIND DIRECTION FROM 120 210 300 30 330 WIND DIRECTION TO 240 330 60 150 210 WAIT W.S. RISE (SEC) 60 60 60 60 60 WAIT W.S. DROP (SEC) 60 60 60 60 60 NUM. STAGES W.S. 3 3 3 3 3

FIGURE 40. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.6 VENTS OPERATION SCREENSHOT

Misting is not used but circulators are used.

7.7.2 CIRCULATORS OPER. DURING HEATING YES OPER. DURING COOLING YES

FIGURE 41. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 7.7.2 CIRCULATORS

SCREENSHOT

1 2 3

Rain Wind Dir Rain Wind Dir Rain Wind DirNo No No Yes

Yes NoYes Yes

60%

0%

40%

20%

5 10 15 20 (km/h)

Vent

40%

0%

30%

10%

2 4 6 8 (km/h)

Vent

100%

10%

70%

40%

10 20 30 40 (km/h)

Vent


4.1.5.2 STEP 2 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – TEST After the configuration all outputs, inputs and sensors may be tested according to Menu 6. 4.1.5.3 STEP 3 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – ALARM

5.2 FAULTS ITEM VALUE DELAY (sec) ALARM HIGH t° 35.0 60 YES LOW t° 10.0 60 YES HIGH %RH 95.0 60 YES LOW %RH 40.0 60 YES HIGH WIND 60.0 60 YES CO2 HIGH 0 0 NO

FIGURE 42. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 5.2 FAULTS SCREENSHOT

4.1.5.4 STEP 4 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – MANAGEMENT

4.1 CLOCK TIME 10:16:48 DATE 11/02/11 BEGIN DAY 06:00 BEGIN NIGHT 18:00

FIGURE 43. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 4.1 CLOCK SCREENSHOT


4.1.5.5 STEP 5 – CASE STUDY – NATURALLY VENTILATED GREENHOUSE – USER

2.4 EMERGENCY WIND FOR VENT CLOSE (km/h) 50 DELAY (sec.) 60 START FAN NUM. 1

FIGURE 44. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 2.4 EMERGENCY SCREENSHOT


FIGURE 45. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.1 VENT PROGRAM SCREENSHOT

TABLE HUMIDITY TEMPERATURE

DAY INFLUENCE

50 2.0

60 1.0

70 -1.0

80 -2.0

NIGHT INFLUENCE

0 0

0 0

0 0

0 0

TABLE 4. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – DAY/NIGHT INFLUENCE ON TEMPERATURE AND HUMIDITY FOR USE WITH 1.1 VENT PROGRAM

FIGURE 46. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – TEMPERATURE HUMIDITY INFLUENCE FOR USE WITH 1.1 VENT PROGRAM

HUMIDITY INFLUENCE YES YES YES YES YESDIFF FOR FULLY OPEN 2.0 2.0 2.0 2.0 2.0NIGHT t° START OPEN 30.0 30.0 30.0 30.0 24.0DIFF FOR FULLY OPEN 10.0 10.0 10.0 10.0 6.0DAY t° START OPEN 20.0 20.0 20.0 20.0 18.0

1.1 VENT PROGRAMVENT (MAX 16) 1 2 3 4 5

22

21

20

19

18

50% 60% 65% 70% 80% (RH%)

°C Calculated Temperature

Set Temperature (1.1)

+2°C

+1°C

-1°C

-2°C

SET


NMCnet VENT 1 2 3 4 5 6

Calculated Temp °C °C °C °C °C °C

Vent Position (%) % % % % % %

FIGURE 47. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – NMCNET VENT SCREENSHOT

FIGURE 48. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – NMCNET VENT POSITION SCREENSHOT

VentHumidityTemp32 °C31 °C30 °C29 °C28 °C27 °C26 °C25 °C24 °C23 °C22 °C21 °C20 °C19 °C18 °C17 °C16 °CSteps #Vent operation with humidity influence, 10% min. step size.

= Side Vent = Roof Vents

+2°C +1°C 0°C -1°C -2°C100%

10 3 10 3 10 3 10

0%

Vent % Open1-4 5 1-4 5 1-4 5 1-4 5 1-4 5

90% 100%80% 90% 100%

60% 70% 80% 90% 100%70% 80% 90% 100%

90%40% 100% 50% 60% 70% 80%50% 60% 70% 80%

70%20% 66% 30% 40% 100% 50% 60%30% 40% 100% 50% 60%

50%0% 33% 10% 20% 66% 30% 40% 100%

10% 20% 66% 30% 40% 100%

30%0% 0% 33% 10% 20% 66%

0% 33% 10% 20% 66%

0%

10%0% 0% 33%

0% 0% 33%

3

Calculated Temperature from START to OPEN (activated) 0% 0%

<50% 60% 65% 70% >80%

10 3


1.2 FANS OPERATION PROGRAM FANS GROUP 1 DAY t° OPER. 40.0 DIFF. t° TO STOP 5.0 NIGHT t° OPER. 40.0 DIFF. t° TO STOP 5.0 L. OUT. t° TO STOP 10.0 H. OUT. %RH TO STOP 80.0 IF COOL. PAD OPER. 40.0 DIFF. t° TO STOP 5.0 DURING %RH TREAT. NO CIRC. FAN OPER. NO DURING FRESH AIR NO DURING SPEC. VENT. NO STOP DURING C02 NO

FIGURE 49. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.2 FANS OPERATION

PROGRAM SCREENSHOT


1.4 SCREEN PROGRAM THERMAL SCREEN No. 1 2 ---OPERATE BY SENSORS--- OPERATE BY RAD. TEMP. FULL SPREAD ABOVE 550 30.0 FULL ROLL UP BELOW 250 20.0 SPREAD DELAY (SEC.) 60 60 ROLL UP DELAY (SEC.) 60 60 ----OPERATE BY TIME----- SPREAD START (HH:MM) 00:00 10:00 SPREAD END (HH:MM) 00:00 12:00 ROLL UP START (HH:MM) 00:00 16:00 ROLL UP END (HH:MM) 00:00 21:00 -----SCREEN SETTING----- FULL TIME MOTOR OPER. SEC 90 180 % PER STAGE 25 100 MAXIMUM % SPREAD DAY 90 100 MAXIMUM % SPREAD NIGHT 100 100 ROLL UP AFT. HEAT. (MM:SS) 00:00 00:00 -----SETTING PROCESS----- SPREAD DURING HEATING NO YES ROLL UP DURING FANS YES NO ROLL UP DURING SPRAY NO NO ROLL UP DURING CO2 NO NO ROLL UP DURING RH TREAT. YES NO HIGH WIND ROLL UP YES YES SPREAD SCREEN DUR. NIGHT YES YES

FIGURE 50. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.4 SCREEN PROGRAM

SCREENSHOT


1.5 FOGGING PROGRAM START TIME 10:00 STOP TIME 16:00 CURVE POINT 2 4 FROM t° 32.0 36.0 0.0 0.0 TO RH% 60.0 80.0 0.0 0.0 ON (sec.) 3 3 0 0 OFF (sec.) 50 10 0 0 t° HYST. (-) 2.0 BAND RH% (+/-) 10.0 t° OUT. STOP 25.0 RH% OUT. STOP 60.0

FIGURE 51. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.5 FOGGING PROGRAM

SCREENSHOT

FIGURE 52. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – OFF TIME VS. TEMPERATURE IN THE FOGGING PROGRAM

31 32 33 34 35 36

OFF

Tim

e (s

ec)

Temperature (°C)

40

30

20

50

10


FIGURE 53. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 1.8 CIRCULATORS SCREENSHOT

2.1 HUMIDITY TREATMENT PROGRAM 1 2 3 4 START TIME 07:00 08:00 00:00 00:00 END TIME 08:00 18:00 00:00 00:00 HIGH. %RH TO START 40 85 0 0 %RH DIFF. TO STOP 10 10 0 0 ON TIME (min.) 10 1 0 0 OFF TIME (min.) 20 0 0 0 INSIDE LOW t° TO STOP 12.0 12.0 0.0 0.0 OUTSIDE LOW t° TO STOP 12.0 12.0 0.0 0.0

FIGURE 54. CASE STUDY – NATURALLY VENTILATED GREENHOUSE – 2.1 HUMIDITY TREATMENT

SCREENSHOT

t° HYSTERESISRH% HYSTERESIS 10.0

OFF TIME 3 (MIN.) 00:002.0

ON TIME 3 (MIN.) 00:00

DELTA t° TO START 3 0.0%RH ABOVE 3 0.0

LOW t° TO OPER. 3 0.000:00

HIGH t° TO PROPER. 3 0.0

0

END TIME 3

ON TIME 2 (MIN.) 1

START TIME 3 00:00OFF TIME 2 (MIN.)

6.0%RH ABOVE 2 85.0DELTA t° TO START 2HIGH t° TO PROPER. 2 20.0LOW t° TO OPER. 2 30.0END TIME 2 08:00START TIME 2 18:00OFF TIME 1 (MIN.) 0ON TIME 1 (MIN.) 1%RH ABOVE 1 75.0DELTA t° TO START 1 4.0HIGH t° TO PROPER. 1 20.0LOW t° TO OPER. 1 30.0

START TIME 1 08:0018:00END TIME 1

GROUP (MAX 4) 1

1.8 CIRCULATORS


4.1.6 CASE STUDY – FORCE VENTILATED GREENHOUSE

FIGURE 55. CASE STUDY – FORCE VENTILATED GREENHOUSE – 3D GRAPHIC This case study is based around a force ventilated (pad and fan) 0.45 ha greenhouse with 14 x 9.6m wide x 34.0m long bays as shown in FIGURE 55.There is a 2.5m balcony on all four sides. The bays (crop rows) run in a north-south direction. The prevailing wind is from the northwest. Storm winds come from the southeast. It features the following, which are represented in a plan view in FIGURE 56.

• Extraction fans – 2 per bay – 28 in total • Gable fans – 4 in total • Pads with pad pumps – 7 in total • Pad curtain (vent) – 2 in total • Louvre – 4 in total • Circulation fans – 1 per bay • Screen – 1 in total • Temperature / humidity box – 1 per half of the greenhouse – 2 in total • Weather station:

o Wind direction o Wind speed o Outside temperature o Outside humidity o Radiation


FIGURE 56. CASE STUDY – FORCE VENTILATED GREENHOUSE – LAYOUT

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1

43

2Fa

n St

age

11

11

43

24

32

43

24

32

43

24

32

43

24

32

4

CIRCULATION FAN EDC24

LEGEND

MEASURING BOXVENTILATION FAN EM50N

PAD PUMPROOF VENT GEAR

COOLING PADLOUVRE SM24

SIDE MOTORS

GABLE FAN ED24

GABLE FAN - STORM EM36

SCREEN MOTORROOF MOTOR

COOLNET VALVE

SWITCH BOARDNMC CONTROLLER

SE(STORM WIND)

NORTH SOUTH(VENT 2)

EAST

WEST

NW(PREVAILING WIND)

LOUVRE(VENT 1)


4.1.6.1 STEP 1 – CASE STUDY – FORCE VENTILATED GREENHOUSE – CONFIGURATION Follow Menu 7.1 to 7.4 to configure according to the definitions in FIGURE 56

FIGURE 57. CASE STUDY – FORCE VENTILATED GREENHOUSE – 7.4 TEMPERATURE SETTING SCREENSHOT

FIGURE 58. CASE STUDY – FORCE VENTILATED GREENHOUSE – 7.6 VENTS OPERATION SCREENSHOT

FIGURE 59. CASE STUDY – FORCE VENTILATED GREENHOUSE – 7.7.2 CIRCULATORS SCREENSHOT

FUNCTION Temperature Sensors

0COOL. PAD 1 1 2 0 0 0

0FANS 3 1 2 00 0 00 0

0 0 0SCREEN 1 1

0 0 00 0 0

0 0 0

7.4 TEMPERATURE SETTING (also RH%)

0 0VENT 1

2 00CIRCL. FAN 1 1 2 0 0 0

0 0 0OUTSIDE 3 0 0 0INSIDE 1 2 0

FANS 4 1 2 0

0 0 0

FANS 2 1 2 0FANS 1 1 2 0

60% DURING FAN 100% MIN. DURING %RH 0

OPENING TIME (SEC) 60CLOSE TIME (SEC) 60% PER STEP 100

60

15060

VENT 2

60

% MIN. DURING PAD 100WIND PROGRAM NUMBER 0WIND DIRECTION FROM 90

090

1

7.6 VENTS OPERATION

1010

10060

100100

0

WIND DIRECTION TO 150WAIT W.S. RISE (SEC) 60

1

1

NUM. STAGES W.S.WAIT W.S. DROP (SEC)

DELAY TIME (SEC)

OPER. DURING HEATINGOPER. DURING COOLING

YESNO

7.7.2 CIRCULATORS


4.1.6.2 STEP 2 – CASE STUDY – FORCE VENTILATED GREENHOUSE – TEST After the configuration all outputs, inputs and sensors may be tested according to Menu 6. 4.1.6.3 STEP 3 – CASE STUDY – FORCE VENTILATED GREENHOUSE – ALARM

FIGURE 60. CASE STUDY – FORCE VENTILATED GREENHOUSE – 5.2 FAULTS SCREENSHOT 4.1.6.4 STEP 4 – CASE STUDY – FORCE VENTILATED GREENHOUSE – MANAGEMENT

FIGURE 61. CASE STUDY – FORCE VENTILATED GREENHOUSE – 4.1 CLOCK SCREENSHOT

4.1.6.5 STEP 5 – CASE STUDY – FORCE VENTILATED GREENHOUSE – USER

FIGURE 62. CASE STUDY – FORCE VENTILATED GREENHOUSE – 2.4 EMERGENCY SCREENSHOT

VALUE5.2 FAULTS

HIGH WIND 60.0 60 YESCO2 HIGH 2000 60 YES

LOW %RH 40.0 60 YES

LOW t° 10.0 60 YES

ITEM DELAY (sec) ALARMHIGH t° 35.0 60 YES

HIGH %RH 95.0 60 YES

10:16:4811/02/11

06:0018:00

4.1 CLOCK

BEGIN NIGHTBEGIN DAY

DATETIME

DELAY (sec.) 60

START FAN NUM. 1

2.4 EMERGENCY

WIND FOR VENT CLOSE (km/h) 50


FIGURE 63. CASE STUDY – FORCE VENTILATED GREENHOUSE – FAN STAGES, PAD AND CURTAIN (VENT) OPERATION

*Fan stage 1 (5x ED24 Fans) equals 1.6 x

EM50n fans.

Bay # 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Pad

% of Fan contribution to 100% Fan operation

Total Fans (EM50n)

Vent 1 V1 V1 V1 V1Vent 2 (Air Inlet)

23 24 25 26 27 28 Fan % OpenedFan Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 223 2 4 3 2 4 3 2 4

29.6Fan Stage # 4 3 2 4 3 2 4 3 2 4 3 2 4 3 2 4 3 2 4

Fan Stage 1 (ED24) 1 1 1 1 1 *1.6 5% 5%28 n/a

22 2 2 9 30% 35%Fan Stage 2 2 2 2 2 23 3 9 30% 65%Fan Stage 3 3 3 3 3 3 3 3

4 4 10 35% 100%Fan Stage 4 4 4 4 4 4 4 4 4

2 4 282 4 3 2 4 3 2 4 32 4 3 2 4 3 2 4 3Fan Stage (4-3-2) 4 3 2 4 3 2 4 3


FIGURE 64. CASE STUDY – FORCE VENTILATED GREENHOUSE – FANS, PAD AND CURTAIN (VENT) AND INSIDE TEMPERATURE

FIGURE 65. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.2 FANS OPERATION PROGRAM SCREENSHOT

%%%%%%%

Activated

1.1 1.6Inside VENT PAD

3029

Temp % OPEN

ON

1 2 3 4 1 2 3 4

Example with %RH Condition = TRUE

ONON

100100100100100100100

°C°C°C°C°C°C°C

28ON

ON (100)ONON

OFF°C

27262524

Vent = Curtain on Pad

23

OFF

ONON

ON

ON

ON ON

1.2 1.2FANS - Day Temperature FANS - if Cooling Pad

1 2 3 4

YES YES YESDURING SPEC. VENT. YES

YES YES YES YES

STOP DURING C02 YESYES YES YES

DURING FRESH AIRCIRC. FAN OPER. NO NO NO NO

YES NO NO NODIFF. t° TO STOP 2.0 2.0 2.0 2.0

29.080.0 80.0 80.080.0

20.0 20.0 20.0 20.0

26.0 26.0 28.0

L. OUT. t° TO STOP

0.0 0.0DIFF. t° TO STOP

0.0 0.00.0 0.0 0.0 0.0

2.0DIFF. t° TO STOP 2.0 2.0 2.027.0 29.0

1.2 FANS OPERATION PROGRAMFANS GROUP

25.0DAY t° OPER. 24.0

NIGHT t° OPER.

H. OUT. %RH TO STOPIF COOL. PAD OPER.

DURING %RH TREAT.


FIGURE 66. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.4 SCREEN PROGRAM SCREENSHOT

1.6 COOLING PAD PROGRAM START TIME. 08:00 STOP TIME 18:00

CURVE POINT [

1] [

2] [

3] [

4] FROM t° 26.0 27.0 28.0 29.0 TO RH% 65.0 70.0 75.0 80.0 t° HYST. (-) 2.0 BAND RH% (+/-) 5.0 t° OUT. STOP 20.0 RH% OUT. STOP 60.0

FIGURE 67. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.6 COOLING PAD PROGRAM

SCREENSHOT

ROLL UP DELAY (SEC.) 60 60

FULL ROLL UP BELOW 250 20.0SPREAD DELAY (SEC.) 60

SPREAD SCREEN DUR. NIGHT YES YESHIGH WIND ROLL UP YES YESROLL UP DURING RH TREAT. YES

ROLL UP DURING FANS NO NOSPREAD DURING HEATING YES YES

NOROLL UP DURING CO2 NO NOROLL UP DURING SPRAY NO NO

ROLL UP AFT. HEAT. (MM:SS) 00:00 00:00

-----SETTING PROCESS-----

25 100180

% PER STAGEFULL TIME MOTOR OPER. SEC 90

MAXIMUM % SPREAD NIGHT 100 100MAXIMUM % SPREAD DAY 90 100

ROLL UP END (HH:MM) 00:00 21:00

-----SCREEN SETTING-----

ROLL UP START (HH:MM) 00:00 16:00SPREAD END (HH:MM) 00:00 12:00SPREAD START (HH:MM) 00:00 10:00----OPERATE BY TIME-----

THERMAL SCREEN No. 1 2

TEMP.

60

OPERATE BY RAD.FULL SPREAD ABOVE 550 30.0

1.4 SCREEN PROGRAM

---OPERATE BY SENSORS---


FIGURE 68. CASE STUDY – FORCE VENTILATED GREENHOUSE – 1.8 CIRCULATORS SCREENSHOT

FIGURE 69. CASE STUDY – FORCE VENTILATED GREENHOUSE – 2.1 HUMIDITY TREATMENT SCREENSHOT

END TIME 2 08:00

RH% HYSTERESIS 10.0

OFF TIME 3 (MIN.) 00:00

t° HYSTERESIS 2.0

ON TIME 3 (MIN.) 00:00

DELTA t° TO START 3 0.0

00:00END TIME 3START TIME 3 00:00

OFF TIME 2 (MIN.) 0

%RH ABOVE 3 0.0

HIGH t° TO PROPER. 3 0.0LOW t° TO OPER. 3 0.0

ON TIME 2 (MIN.) 1%RH ABOVE 2 85.0

6.0DELTA t° TO START 2HIGH t° TO PROPER. 2 20.0LOW t° TO OPER. 2 30.0

18:00

OFF TIME 1 (MIN.) 0

START TIME 2

ON TIME 1 (MIN.) 1

HIGH t° TO PROPER. 1 20.0

%RH ABOVE 1 75.0DELTA t° TO START 1 4.0

END TIME 1 18:00LOW t° TO OPER. 1 30.0

START TIME 1 08:00

1.8 CIRCULATORS

GROUP (MAX 4) 1

0.0 0.0INSIDE LOW t° TO STOP 12.0 12.0OUTSIDE LOW t° TO STOP 12.0 12.0 0.0 0.0

1 0 00 0 0

ON TIME (min.) 5OFF TIME (min.) 25

%RH DIFF. TO STOP 1085 0 0HIGH. %RH TO START10 0 0

END TIME 08:0040

00:00START TIME 07:00 08:00 00:0018:00 00:00 00:00

3 42.1 HUMIDITY TREATMENTPROGRAM 1 2

cmt manual - netafim · this section of the cmt manual can be used for the software of both the nmc...

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