Dupline Irrigation Bus System - the Wiring Concept of the Future
Traditional irrigation systems are characterized by costly and complicated wiring. Each valve needs a separate hot wire running back to the
Irrigation controller which can be located kms away. Expansion is also a problem due to the high cost and impracticality of getting extra
wires for valves that need to be added to the system. The Dupline irrigation bus system offers a simpler and more flexible wiring concept
than traditional systems. By running the power, valve control signals and pulses from flowmeters on a single 2-wire cable, Dupline reduces
the wiring and cable cost significantly and makes expansion easy.
The 4 Basic Elements of the System
Valve I/O-modules
These bus-powered modules are installed at the actual position of the valve. They are available with an IP68-rating
which allow underground installation. The Valve I/O-modules have Valve open/close outputs and two inputs that
e.g. can be used for transmitting pulses from flowmeters or tamper switches.
Master Module
Generates the Dupline carrier signal and acts as interface to the Irrigation Controller via serial RS232 or RS485
communication. The Controller can be a PLC, PC or Dedicated Irrigation Controller. Plug&Play interfaces are
available for all major PLC brands and Modbus. It is also possible to interface to the Irrigation Controller via
hardwired I/O-boards.
Dupline Booster
Boosts the Dupline voltage from 8 to 28 VDC in order to obtain sufficient voltage for operating the 3-wire 12 VDC
latching valves.
Handheld Test Unit
A Dupline-powered test device that can be connected to the 2-wire at any point in the system. It is used in the field
to check real-time signal status and operate valves manually.
Dupline
®
- HiLine Irrigation Control ove
Interface
Module
Booster
Module
PC
or
PLC
Dupline
HiLine
