Instruction Manual HI 8001 & HI 8002 Panel-mounted and Wall-mounted Fertigation Controllers Manufacturers since 1978 These Instruments are in Compliance with the CE Directives 1 Dear Customer, Thank you for choosing a Hanna Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for a correct use of the instrument, as well as a precise idea of its versatility. If you need more technical information, do not hesitate to e-mail us at tech@hannainst.com. These instruments are in compliance with directives. TABLE OF CONTENTS 1 THEORY OF FUNCTION ...................................................................4 2 GENERAL DESCRIPTION ...................................................................5 3 FUNCTIONAL DESCRIPTION ........................................................ 6 3.1 Irrigation Control .................................................................... 6 3.2 Conductivity Control ............................................................... 9 3.3 Fertilization Control ................................................................ 10 3.4 pH Control ............................................................................ 10 3.5 PID Control ........................................................................... 11 3.6 Agitator Control ..................................................................... 14 3.7 Filter Control ......................................................................... 14 3.8 Manual Functions ................................................................. 14 3.9 Alarms .................................................................................. 15 3.10 Logging (Diary) Functions ...................................................... 16 3.11 Date and time controller settings ............................................ 16 3.12 Password setup ..................................................................... 16 4 USER INTERFACE ........................................................................ 17 4.1 Operating Modes ................................................................... 17 4.2 Panels Browsing Methods ....................................................... 20 4.3 Panel List .............................................................................. 20 5 PANEL DESCRIPTION ................................................................... 22 5.1 General consulting panel code ............................................... 22 5.2 Consulting Program Settings .................................................... 24 5.3 Statistics Consulting ............................................................... 34 2 5.4 Alarms Consulting ................................................................ 37 5.5 Log Consulting ...................................................................... 37 5.6 General Settings .................................................................... 39 5.7 Program Settings .................................................................... 40 5.8 Manual Commands .............................................................. 49 5.9 Customized Settings ................................................................ 50 6 CALIBRATION PROCEDURES ........................................................ 57 6.1 Sensor Calibration Procedure .................................................. 57 6.2 PID Calibration Procedure ...................................................... 58 7 ALARMS DESCRIPTION ................................................................ 64 8 TROUBLE SHOOTING GUIDE ...................................................... 66 9 ELECTRICAL DIAGRAM .............................................................. 68 APPENDIX 1: KEYBOARD OPERATING MODES ................................. 72 APPENDIX 2: OUTLET ASSIGNMENT TABLE ...................................... 73 APPENDIX 3: GRAPHICAL REPRESENTATION .................................... 74 APPENDIX 4: LIST OF PANELS ......................................................... 77 APPENDIX 5: INSTALLATION BLOCK DIAGRAM ................................. 85 WARRANTY ................................................................................... 87 3 1 THEORY OF FUNCTION Irrigation is one of the most important operation in agriculture. With proper irrigation the quality and quantity of crops can be significantly enhanced. Correct irrigation is not a simple process: the quantity of water must be sufficient for crops, and if not, photosynthesis and overall growth is impeded. However, if the amount of water is more than required, plant growth may become excessive producing a taller, softer and/or damaged product. The Fertigation Controller can control the quantity of irrigation water based on time or volume. Different sectors can be irrigated at different times during a day with different water quantities. In the Fertigation Controller each irrigation program provides control of pH and conductivity. When necessary, a specific program performs a pH correction by the introduction of an acid or base into the irrigation water. pH control is based on multiple sensor input and a specified set point, while conductivity control is directly related to the level of fertilization. When the Fertigation Controller commands the addition of 1 to multiple fertilizers to the irrigation stream, conductivity sensors continually monitor the conductivity of the stream and the overall amount of fertilization is maintained based on a specified set point (limit). The Fertigation Controller can command the addition of multiple (1 to 4) fertilizers to irrigation water. The percentage of each fertilizer is set by the user and controlled by a specific program based on the conductivity set point. If a pH or conductivity control problem arises, the program generates an alarm to inform the user. All operations of both control processes are stored in memory. The Fertigation Controller performs all necessary operations in the monitoring and control of irrigation and fertilization processes. These operations are conducted continuously throughout the day, month and year. To use and manage the system properly, all the necessary control values must be set (Setup mode). During monitoring operations (Consulting mode) the user can obtain information about how the system and irrigation process are functioning, in addition to the history of all operations for current and previous days. To view the required information on the display or set a specific parameter, the appropriate display panel has to be selected, as explained in this manual. 4 2 GENERAL DESCRIPTION The Fertigation Controller is a micro-processor-based system used in fertilization and irrigation control for greenhouses or open fields with powerful, flexible programming features. The main function of the Fertigation Controller is supplying and controlling the necessary water and fertilizers for crops according to several parameters such as acidity, conductivity and received solar radiation. The user interface is structured in two parts: 1. Consulting (numbered panels indicated by Cxx) 2. Setting (numbered panels indicated by Sxx). This instruction manual will present the interface in 2 forms: 1. Fertigation Controller functions 2. Panel order Fertigation Controller is capable of executing the following functions: - Irrigation control by time or by volume - pH control - Conductivity control - Fertilization control - Irrigation adjustment due to solar radiation - Manual correction - Agitator control - Filter control - Water supply control - Main pump control - Sector control - Serial communication - Alarm function - Logging function 5 3 FUNCTION DESCRIPTION In this chapter the main functions of the Fertigation Controller are presented. For a better understanding see the typical installation schemes utilized for irrigation and fertilization presented in the Installation Block Diagram, Appendix 5. 3.1 IRRIGATION CONTROL The Fertigation Controller can control 8 to 32 sectors (one valve per sector) for each of the ten irrigation programs: - 1 to 32 valves (sectors) can be selected specifying the sector's number and the desired value of irrigation time or volume for a specified irrigation program-using Panel S 38 (SET SECTORS). The panel displays the number of set sectors for the respective irrigation program - The current status, set value plus irrigation extension and "Done" time/ volume value for the selected irrigation program/sector are shown on Panel C 14 (SECTOR STATE). Irrigation can be controlled by time or volume ­ irrigation control mode can be switched between time and volume using panel S 53 (IRRIG CTRL MODE). Each irrigation program can be started by: TIME: - 1 to 6 different timetables (values) per program can be set using panel S 35 (SET START TIME). "Start cond" must be the selected option on panel S 34 (START CONDITION). ACCUMULATED SOLAR RADIATION: - A Solar Radiation set point can be established for starting each program - The accumulated solar radiation level can be used as a starting condition for each program - There are 3 parameters used to start a program by solar radiation: - The solar radiation sensor threshold value can be established for each irrigation program. When the solar radiation measured value exceeds the sensor threshold value the accumulated solar radiation value is increased. This parameter can be modified on panel S 43 (Level: xxxxW/m2). - The accumulated solar radiation value is used to keep track of the measured solar radiation level during the time interval determined by the previous start moment of the irrigation program and the actual moment. This parameter can be seen on panel S 06 (Irrig = xxxxWh/m2). 6 - The accumulated solar radiation starting level value is used as a threshold value for the accumulated solar radiation. When the accumulated solar radiation value exceeds this threshold level the irrigation program is started (or it is brought in READY state if there are other programs currently running at that moment). This parameter can be modified on panel S 43 (Acc = xxxx Wh/m2) and can be seen also on panel C 06 (Acc = xxxxWh/m2) EXTERNAL TANK LEVEL: - One external tank (level indication) can be assigned to each irrigation program, that can start the specified irrigation program ­ this option is set using panel S 34 (START CONDITION). MANUAL ACTIVATION: - A program can be started using panel S 47 (PROG MAN START) - A program can be stopped using panel S 48 (PROG MAN STOP) Each irrigation program can be repeated a specified number of times. The number of repetitions as well as pause time between two repetitions can be specified using panel S 36 (PROGRAM REPEATS). Each irrigation program can be given a priority in relation to others (5 priority levels). Priorities and maximum open sectors per group can be specified for each program and can be set using panel S 33 (SET PRIORITY). Below we present the setting requirements for each irrigation program: THE WORKING PERIOD : - (between start date (day/month) and end date (day/month)) ­ use panel S 31 (ACTIVE TIMETABLE). For more details see Appendix 3. THE WORKING TIME DURING A DAY: - (between start time and end time) ­ use panel S 31 (ACTIVE TIMETABLE). For more details see Appendix 3. THE CYCLE WORK/ REST DAY: - can be set using panel S 32 (WORKDAY). For more details see Appendix 3. THE WORKING DAYS IN A WEEK: - use panel S 32 (WORKDAY). For more details see Appendix 3. Working time status for each irrigation program, if selected (irrigation program is in work period of year, day and week) is displayed in panel C 08 (WORK TIME COND). The percent of irrigation time or set volume can be automatically modified by the following factors: 7 SOLAR RADIATION FACTOR: - This option can be set using panel S 42 (CORRECTIONS). This factor affects the irrigation time or volume extension in accordance with the set value of the solar radiation sensor level and solar radiation accumulation. The solar radiation accumulation extension setting and current value is displayed on panel C 06 (SOLAR RAD IRRIG). Solar radiation extension correction can be viewed using panel C 11 (SOL RAD EXTENT). MANUAL FACTOR: - This option can be set using panel S 42 (CORRECTIONS). Percentage and corresponding value of time or volume can be viewed using panel C 12 (MAN FACTOR). Total correction percentage, time or volume value is displayed on panel C 13 (TOTAL CORRECTION). PRE/POST IRRIGATION: In each irrigation program the pre-irrigation and post-irrigation time or volume value (used to clean the irrigation pipes with pre-irrigation water) can be set using panel S 37 (PRE/POST IRRIG). Panel C 01 (GENERAL INFO) displays the active irrigation program and active sectors. The active irrigation program is displayed on panel C 02 (SENSORS STATE). Related data regarding the active irrigation program (active irrigation prog ...