DETAILED DESCRIPTION

Irrigation Control with Dupline®

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.
By running the power, valve control signals and pulses from flow meters on a single twowire cable, Dupline reduces the wiring and cable cost significantly and makes expansion easy. Any type of Irrigation Controller, whether it is a PLC, PC or Dedicated Controller, can use Dupline as a remote I/O system.
In order to achieve sufficient voltage level to switch the 3- wire latching valves in the field, a Booster Module converts the Dupline voltage level to 28 VDC. Each valve is connected to an IO-module with two outputs for opening and closing the valve, and with 2 inputs that can be used for transmission of pulses from flow meters. The module is available in a housing that allows underground installation, and in a DIN-rail mount housing. Each time the valve is fired, a built-in capacitor slowly charges up and after 10s it stores enough energy for the next valve operation. The wiring topology is completely free with no limitation in number and length of branches. One Hi-Line network can handle up to 64 valves over distances up to 7 km, and several networks can be linked together.

Irrigation Dupline features

• Reduced installation time
• Reduced cable cost
• Easy to expand or change an installation
• Extremely user-friendly
• Free topology
• Robust, reliable and proven technology
• Flexible interfacing to Irrigation Controllers
• Cost-effective