5
-A1, A2, (A-54 analog injection): Analog outputs
from 0 to 10 volts to connect to frequency varia-
tors or regulators. It is important neither to short-
circuit these signs nor to put the cables near
power lines. Output A1 corresponds to fertilizer
and A2 to acid or base. The symbol is the
common output or 0 volts.
-S4 (in two versions): Digital output, which is acti-
vated during the whole irrigation, except when
there is a malfunction.
-S5 (in two versions): Digital output used both for
the start and stop of mixers and for malfunction
detection. For a shared use of both functions, it is
necessary to use a relay activated by the general
output. If it is activated, the mixers will work, but if
it is deactivated, the alarm device will work.
7. CONFIGURATION OF THE INSTALLER
This configuration must be done by the unit in-
staller. Press the “+” and “-“ keys at the same time to
access it. Press the “C” key to go to the following
code. Press the “+” and “-“ keys to change the val-
ues. Press the “C” key until the C0 code is displayed
to go back to CONSULTATION.
-Code 00: Delay until the first regulation. Indicate
the time in seconds that the programmer must
wait to calculate the regulation when a program is
started. During this time, the % of applied injec-
tion will be the one memorized in the last irriga-
tion. This allows the injection stabilization. The
value must be between 0 and 250.
-Code 01: Reaction delay. Indicate the time in
seconds that the programmer must use to carry
out the adjustment to be done. The maximum
time is 5 seconds. Time 0 indicates that the ad-
justment must be done as soon as it is detected.
-Code 02: Self adjustment delay. Indicate the time
in seconds that must go by between a self-
adjustment attempt and the next one. The self-
adjustment is a small increase or decrease of the
% of injection which is introduced when the sen-
sor value is outside the programmed reference
value but within the allowed error. The minimum
time is 4 seconds and the maximum is 15.
-Codes 03, 04 and 05: Proportional bands. The
limits, within which the % of injection will be cal-
culated, must be indicated in these three codes,
one for every program. The lower the limit, the
more abrupt the changes will be when trying to
obtain the desired reference. The value can be
between 0 and 9.9, although the normal is 2.0.
-Code 06: Modulation cycle (*). Indicate, in sec-
onds, the frequency in which the injection im-
pulses will be repeated. A suitable value would be
between 2.0 seconds and 4.0 seconds, although
it can go from 2.0 to 9.9 seconds.
-Codes 07, 08, 09 and 10: Delay. Indicate, in sec-
onds, the time that has to go by from the moment
the activation of an input is detected until the pro-
grammer takes it into account. The value must be
between 0 and 250.
-Code 11: Acid o base. In this code it can be se-
lected how it will work the pH regulation in the ir-
rigation water, by means of acid or base. If it
leaved the value to 0 it will work like an acid, and
if it is modified with the “+” key and leaved to 1 it
will work like a base. Then, it will be determinate if
there is an acid or base tank.
(*) In the “by impulse” version, to maintain the EC, the
unit applies every certain seconds, a dose of every fertilizer,
which is related to the desired proportion between fertilizers and
the programmed reference. To maintain the pH the unit works in
a similar way. In the “analog” version, to maintain the EC and/or
the pH, the unit changes the injection speed of the engines until
it gets the programmed references.
