2
System Components
The
G2W
system consist a number of main components:
Field units – Installed in the field next to the valves, the field unit transmits the states of the various
inputs to the controller and gets commands from the controller
through
the concentrator.
Repeaters – Used as
intermediate stations between the units and the concentrator in cases of where
direct communication is not possible, such as when the field unit is more than
2 km from the
concentrator, or when communication is blocked
by obstacles.
Concentrator – Used as the system manager. The concentrator transmits the controller’s commands
to all the field units via radio communication, and returns the various inputs of the field units to the
controller.
Galileo controller – Controls the irrigation system according to its programming and the field
conditions.
Field Units
The G2W system supports the following types of field unit:
Galcon RTU.
G2W 4.
G2W 8.
Field units are intended for outdoor use, operating at an ambient temperature range of -10
o
C to +50
o
C,
and at a maximum relative humidity up to 100%. The Ingress Protection of the field units is IP54.
Galcon RTU Field Unit Features
The Galcon RTU field units have the flowing input and output ports:
4 x 3 wire DC latch output ports.
8 x Discrete input ports.
3 x Analog 4 -20 mA
/
0 -10 V input ports.
The analog input ports can operate at a voltage range of 0-10 V, or a current range of 4-20 mA. To define
the operation setting for each input port, move the jumper (Item IX in Figure 1) according to the jumper
diagram on the circuit board.
