Progres AGRONIC 4000 Instruction Manual page 8

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the output of the transformer into one of the terminals
marked as "COMMON / 24 V N", and the other pole
into one of the terminals marked as "24 V F".
Connect the solenoids, relays, etc. between the
output common "COMMON" and the corresponding
output.
Do not exceed the maximum power by output of
1 Amp and the general of 6,3 Amp. If this happens
insert external relays.
The "output fuse" protects from overloads and
short-circuits; to replace it half turn the cover of the
fuses box and replace it by another one of similar
characteristics.
The "AUX" terminal corresponds to the "PHASE"
of the 24 Vac which goes through the fuse. It will be
useful to connect auxiliary elements of manual com-
mand and extensions of relays above to 32 outputs.
The outputs are isolated from the internal circuitry
by relays and protected by a varistor at everyone of
them, plus a general gas discharger in the lines of 24
Vac.
The number of outputs can vary from 16 to 24,
32, 48, 64, 80 or 96 in the same unit. It is possible to
Example of connection
extend the outputs at a distance, in external modules
"via radio" or "via cable".
The maximum number of sectors to be controlled
by the Agrónic 4000 is 99.
Every output can be assigned to an irrigation sec-
tor (one or more electrovalves) or to a general output
(pumps, filters, mixers, etc.). To do so, go to the sec-
tion of "Parameters-Sectors"
Generals".
4.3.5. RS232 and RS485 connection links
An Agrónic 4000 with RS232 option will have a
side connector where the power cable may be linked
to a PC and an adapter for connection to modem.
An Agrónic 4000 with RS485 link will have a side
connector (box model) or on the top (built-in model).
This link is always made with bifilar wire: wires A and
B. The connection shall be made by inserting wire "A"
in terminal "1" of the connector and wire "B" in termi-
nal "2". To connect different equipment through RS-
485 communication a linear bus must be used, with a
single start and end; it must not be in star topology.
or "Parameters-