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2. BASIC FUNCTIONAL DESCRIPTION
Electronic unit for the control of irrigation, fertiliza-
tion, pH, pumping and filter cleaning, plus malfunction
detection and with the possibility of telemanaging the
data via PC or mobile phone.
Models with 16, 24, 32, 48, 64, 80 and 96 config-
urable outputs, plus 12 digital sensors at the base.
Extensions for the reading of analogical sensors; both
by direct connection to the unit or by external modules
(Agrónic Monocable or Agrónic Radio).
Possibility of programming by time and volume,
both in irrigation and fertilization as in filter cleaning,
with possibility of mixed
performance (independent for
each sub-program).
By means of climatic or crop sensors, it can influ-
ence the start conditions or the irrigation and fertilizer
units.
IRRIGATION
It can control up to 99 irrigation sectors, gov-
erned by 35 sequential programs, with 12 sub-
programs in every sequence (total 420), and possibil-
ity of linking programs in order to carry out sequences
of 24, 36, or more sub-programs.
Every sub-program can activate from 1 to 10 irri-
gation sectors simultaneously.
Every
program
can start its performance at a con-
crete time, when another program finishes, when a
sensor reaches a certain value (°C, soil moisture, etc.),
due to an input when a contact is closed, by mobile
telephone via SMS message. It can also start its per-
formance according to the days of the week, the irriga-
tion frequency (irrigate every day, every 2 days, every
3
days,
etc.)
or
irrigate
every
day
with
several
perform-
ances.
The
period
of the year when the program has to
work can also be indicated. In a start by sensors, an
active period and a margin of time between starts can
be chosen.
Modification of irrigation and fertilization units by
a manual factor or by sensors which will have an influ-
ence depending on their values from the previous
irrigation, such as rain, evapotranspiration, integration
of the solar radiation, etc.
When an irrigation is taking place, a program can
be cancelled temporarily by sensor values such as
wind, temperature, level, etc.
Grouping of programs up to 9 groups so that only
one program of every group can irrigate at the same
time.
Complete control of instantaneous flow of four
possible
irrigation
meters,
with
programming
of
the
expected flow in each sector and tolerance percent-
age both for excess or lack. Each sector can be con-
nected to a digital flow sensor to detect the lack of
irrigation.
FERTILIZATION
Capacity to configure from 0 to 8 fertilizers, in in-
dependent tanks.
Independent pre- and post-irrigation values for
every program.
The time or volume of application of every fertil-
izer can be programmed independently for every sub-
program.
The use of mixers can be configured, with pre-
mixing and intermittent or non-stop mixing.
Fertilizers can be applied in three different ways:
In series: one type of fertilizer after the other, with
just one injector. In proportional fertigation, inde-
pendent proportions for every fertilizer.
In parallel: several fertilizers are applied simulta-
neously, with one injector for every one of them. In
proportional fertilization, independent proportions
for every type of fertilizer and sub-program.
Uniform: Sets the each fertilizer application to be
uniformly distributed between pre and post irriga-
tion. Application in parallel. For Venturis, injectors
or frequency variators.
Each injection track can be cleaned automati-
cally, with water, at the end of the fertilization.
Reading of the instantaneous flow of fertilizers, as
in irrigation.
With the option of “control pH”, it can be con-
trolled by injecting acid or base with a reference value
independent for every sub-program. With values of
alarm by excess or lack in the reading of the pH and in
the electrical conductivity (EC).
It is possible to choose the control of pH at the
pre-irrigation and post-irrigation.
PUMPING
It has from 1 to 4 general irrigation outputs, which
can be assigned to sectors, with independent activa-
tion and deactivation temporizations. The general
number 1, by means of the “pressure regulation op-
tion”, can give a 0-20 or 4-20 mA analog output, in
order to connect it to a frequency variator and main-
tain a pressure in the irrigation pipe line independent
for every sector.
Optional control of a diesel engine or generator,
with outputs for start, stop, contact and pre-heating.
Start and stop control of the electrical pumps.
FLOWS
Every irrigation sector can be assigned to one of
the 4 possible volumetric meters to irrigate in liters or
m
3
. In the totals, the volume of irrigation and fertilizer
is shared in proportion to the nominal flow assigned to
every sector.
The fertilizer is programmed in liters, deciliters or
centiliters with 8 meters.
FILTER CLEANING
Up to four groups of independent filters, with the
following values:
The number of filters to be used in every group
can be configured. Two cleaning times for every filter
group. Pause time between filters. The cleaning can
be started by the differential pressure and/or by the
time or volume of water circulation. Start or not of the
sectors when cleaning. Assignation of generals and
meters. Control of continuous cleanings.
