Evolution DX2 series Manuale Utente Scaricare il pdf (Pagina 70)

Rain Master Irrigation Systems DX2 User Manual

Page 230 Chapter 10: Troubleshooting

Control Devices (Rain Sensors, Freeze sensors, Etc.)

Many commercial sensor devices available in today's market

take advantage of the common ground configuration to control

watering operations. Devices such as rain sensors, freeze

sensors, moisture sensors, etc. employ a control system which

interrupts the common ground line of watering stations to control

the shutdown of stations.

These devices have inherent limitations:

1) They exhibit "contact bounce" or jitter when the on/off

threshold is reached. This may have adverse affects on

pump systems.

2) Since they interrupt common lines, non-irrigation

programs such as lighting programs are also affected.

3) It may be difficult to identify/interrupt "the" common

wire if multiple commons come in from the field.

When connecting a common interrupting device to the Evolution

DX2 controller, certain conditions must be met prior to

installation to prevent the aforementioned problems. The Rain

Master custom interface cable kit provides the appropriate

method for connecting control devices with continued operation

integrity of the Evolution DX2 controller.

The interface kit is available (with full installation instructions)

at no charge through the Rain Master Order department under

part number "DXCID-KIT".

To request the interface kit, please contact Rain Master direct at

(805) 527-4498.

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Evolution DX2 series Manuale Utente Pagina 70