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Decoder Irrigation Control Systems

 




Product description:

A single pair of wires connect all decoders along a two-wire path. Each decoder is it's own waterproof control unit. It signals one or two valves connected to each decoder using the controller stations for the addresses. Both the on/off signal command and the 24V power are sent over the same pair of wires. Decoder addresses are easily set using either a small field programmer or the Decoder Signaling Module within the controller. No grounding is required other than proper grounding at the controller. One decoder per station controls one or two valves per station. Use DBY-6 waterproof connectors or equivalent.

2WIRE for Hunter® ICC Controllers
1 to 48 Stations

For installation using Hunter ® ICC controller, we offer 2WIRE Decoders designed specifically for this popular unit. Convert any Hunter® ICC controller to full or partial 2-wire operation... up to 48 stations.

 

 

Create a 2-Wire Path
Install a 2WIRE ICC decoder Module into the controller and connect it anywhere along (or on a branch of) the 2-wire path. This controller can operate all or selected stations as 2WIRE.

Expanding 2WIRE
Simply add more valves and Decoders anywhere along the 2-wire path.

Adding stations to a Multi-Wire System

  • Disconnect two existing valves ( in the field and at the controller terminal strip) and use the two control "hot" wires as a new 2-wire path.
  • Stub off the commons in the field, set station addresses in the Decoders and connect them to the 2-wire path.
  • connect an Underhill Decoder Module anywhere along the 2-wire path.


Universal 2WIRE : Convert ANY controller
1 to 63 Stations

The Underhill 2WIRE Universal Decoder Module is designed to give any controller the superior features of decoder technology. It installs neatly inside your favorite controller (internal mount), or in a separate enclosure(external mount) anywhere along the two-wire path (up to 3,000 feet awayfrom the controller).

Universal Sender

 

Connect the Universal Decoder Module to the transformer (24v-32v), 2-wire branch, and Ground. Set the station addresses of the Universal Senders, connect them to the controller terminal strips and the Universal Decoder Module.

Connect anywhere along the 2-wire path (within 3000 feet of controller)where AC power is available. Connect the transformer to AC power and run a 2-wire branch to the controller. Set the station addresses of the Universal Senders and then connect them to the controlller terminal strips and the 2 wire path.
   
   
   

Programmer

Programming Decoders with Station Addresses

Decoders must be set to a unique station address before installation. When the controller turns on a decoder station, it sends power down the main two-wire cable, along with a digital signal (an address) specific to a particular decoder. As the decoder hears its own address, it aplies voltage to the solenoid and the communication from controller to the field is complete.
There are two methods of programming an address into a decoder prior to installation. For the professional contractor, there is a portable programmer/tester (fig. left). To use this product, please refer to its instruction manual provided with purchase.
The second method is to use the built-in decoder programmer on the ICC-Decoder Module. This allows the installer to program a station number into a decoder without extra hardware.
   
   

 

Digital Multimeter


Includes digital display of AC volts, AC current and Ohms resistance. This meter can be used by installers and repair personnel to troubleshoot a two-wire or multi-wire system field wiring to determine if wire runs are too long, if there are open connections, poorly connected wire splices, wire breaks, or other faults.
DANGER: Do NOT measure line (mains) 115V/240V with the load probe. The load probes supplied with the multimeter are not suitable for over 48 Volts.
Digital Multimeter