Hanna Instruments HI 8001 Manuale utente

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

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

[email protected].

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

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

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 suffi-

cient 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 correc-

tion 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 fer-

tilizers 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 com-

mand the addition of multiple (1 to 4) fertilizers to irrigation water. The per-

centage of each fertilizer is set by the user and controlled by a specific pro-

gram 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 con-

ducted continuously throughout the day, month and year. To use and man-

age the system properly, all the necessary control values must be set (Setup

mode). During monitoring operations (Consulting mode) the user can ob-

tain 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.

2 GENERAL DESCRIPTION

The Fertigation Controller is a micro-processor-based system used in fertiliza-

tion and irrigation control for greenhouses or open fields with powerful, flex-

ible 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

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 num-

ber 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 mea-

sured solar radiation level during the time interval determined by the previ-

ous start moment of the irrigation program and the actual moment. This

parameter can be seen on panel S 06 (Irrig = xxxxWh/m2).

- 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 run-

ning 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 num-

ber 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:

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 program

number, last start condition and current / set repetition number) are displayed on

panel C 03 (PROGRAM STATE).

Information about selected irrigation program, priority and irrigation program

conflict are displayed on panel C 09 (PRIOR & CONFLICTS). Set value data,

correction value and irrigation completion (“Done”) value are displayed on

panel C 10 (IRRIG STATE).

Information about the last start condition, date and time are displayed on panel

C 18 (PROG LAST START).

Total accumulation value from a previous date is displayed on panel C 19

(TOTAL ACCUMUL).

Accumulation value from previous date and activation number for a selected

irrigation program are displayed on panel C 20 (PROGRAM ACCUMUL).

Accumulation value from previous date, for a selected sector, is displayed on

panel C 21 (SECTOR ACCUMUL). In addition, this panel displays the valve

number assigned with the corresponding sector.

- Accumulations erase mode can be chosen on panel S 61 (ERASE STATIS-

TICS). The accumulation erase can be performed for all programs and

sectors using one of the following ways:

- Manually

- Every day at specified hour

- Automatically when the accumulations counter value overflows

3.2 CONDUCTIVITY CONTROL

Conductivity control is used to control the fertilization and a reading can be

obtained with one to three conductivity sensors, one to two for fertilization control

and one for water supply conductivity control.

When using two conductivity sensors, the second for safety, the maximal admis-

sible difference between these two sensors can be set using panel S 55 (SEN-

SORS CONFIG).

A third conductivity sensor can be used to measure the conductivity of the water

supply.

Conductivity sensor (S1 main, S2 second and S-for water input) status and

conductivity reference are displayed on panel C 05 (EC STATE). In addition, the

main conductivity sensor value is displayed on panels C 01 (GENERAL INFO)

and C 02 (SENSORS STATE);

Solar radiation accumulation setting and current value for conductivity reference

correction is displayed on panel C 07 (SOLAR RAD FERT).

The conductivity control is made in accordance with a preset conductivity refer-

ence value, specific for each irrigation program. In addition, the conductivity

reference has a minimum offset and maximum offset. The reference value, mini-

mum and maximum offset can be set using panel S 41 (COND CONTROL).

When the conductivity is not within the specified range for a period of time (more

than the time specified) or the difference between the 2 primary conductivity

sensors is greater than the specified difference, the conductivity control will gen-

erate a conductivity alarm . Specified difference can be set using panel S 55

(SENSORS CONFIG). The conductivity alarm threshold can be set using panel

S 41 (COND CONTROL). “EC Out of Range”-the conductivity alarm can also

be generated when the EC IN sensor’s value exceeds the specified EC sensor

difference.

Given a conductivity alarm condition, conductivity control can be maintained if

“Ctrl on EC alarm” is selected using panel number S 52 (ALARM BEHAVIOR).

Statistical values of total conductivity are displayed on panel C 22 (TOTAL AV-

ERAGES). For each irrigation program’s conductivity average see panel C 23

(PROGRAM AVERAGES) and for each individual sector’s conductivity average

see panel C 24 (SECTOR AVERAGES).

3.3 FERTILIZATION CONTROL

Fertigation Controller can use up to 4 fertilizer tanks.

Each irrigation program can specify the percentage for each type of fertilizer.

These values can be set using panel S 39 (SET FERTILIZERS).

The fertilization is done in accordance with the conductivity control. Each irriga-

tion program has a specified conductivity target value (conductivity reference

value which is set using panel S 41 (COND CONTROL);

The percent of applied fertilization can be automatically modified with respect to

an amount of solar energy accumulated since the previous application. The

current fertilizer status (set and current percentage value) can be checked on

panel C 16 (FERTILIZ STATE).

3.4 pH CONTROL

The pH control is necessary to correct and maintain the pH of irrigation water

within specified values (min and max offset values). Minimum and maximum

offset values are set using panel S 40 (pH CONTROL). To choose between acid

or alkaline correction you must go to panel C 51 (pH CTRL OPTIONS). In this

panel you can also select pH correction in pre/post irrigation.

The pH correction is made in accordance with a selected pH reference value

specific for each irrigation program. This value can be set using panel S 40 (pH

CONTROL).

pH control is made with two pH sensors for additional safety and accuracy.

Current status of sensors (main and secondary) in addition to the reference value

is displayed on panel C 04 (pH STATE).

Main pH sensor value is displayed on panel C 01 (GENERAL INFO) and C 02

(SENSORS STATE)

When the pH is not within the specified range for a period of time (more than

the time specified) or the difference between the 2 pH sensors (main and second-

ary) is greater than the specified difference the pH control will generate a pH

alarm. The specified difference can be set using panel S 55 (SENSORS CONFIG).

The pH alarm threshold can be set using panel S 40 (PH CONTROL).

Given a pH alarm condition, the pH control can be maintained if “Ctrl on PH

alarm” is selected using panel number S 52 (ALARM BEHAVIOR).

Given a pH alarm condition, the irrigation can be maintained if “Irrig on PH

alarm” is selected using panel number S 52 (ALARM BEHAVIOR).

Statistical values of pH are displayed on panel C 22 (TOTAL AVERAGES). For

each irrigation program’s pH average see panel C 23 (PROGRAM AVER-

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