9
Connections | Connecting digital inputs
Assembly and connection manual | Agrónic 2500
4.3. CONNECTING DIGITAL INPUTS
Both the digital inputs and the relay outputs are
powered externally at 12 Vdc or 24 Vac.
The digital inputs are galvanically isolated by optocou-
plers from the rest of the circuit.
It is very important to know that the contacts of the
units connected to the digital inputs must be volt-
age-free. In other words, when the input is activated,
the common (CD) is internally connected to the input
(Dx).
There are 6 inputs, listed from D1 to D6 , plus a
common marked CD .
In the Basic version
Each of the sensor inputs can take on a function or
operation that is configured in the ‘Function - 4. Pa-
rameters - 3. General’ section of the manual ‘2466
Agrónic 2500 Installer’s Manual Basic Version’.
List of functions:
• IM Irrigation meter
• FM Fertilizing meter
• SC Start cleaning
• TM Temporary malfunction
• DM Definitive malfunction
• CS Conditional stop
• PS Program start
• AL Alarm (Send an SMS message or notification
through Agrónic APP)
In the Plus version
The inputs are assignable to digital sensors or meter
sensors, see sections ‘Digital sensors’ and ‘Meter
sensors’ in the manual ‘2468 Agrónic 2500 Plus Version
Installer’s Manual’.
The functionality of a back-torque filter can be applied
to the meter inputs (IM and FM), in order to avoid false
pulses. By default, the filter is deactivated. It can be
activated from ‘Function - 4. Parameters - 10. Installer -
5. Various’, in the ‘Digital Meter Sensor’ section.
Digital inputs
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