Rain Bird WS PRO LT Specifications download pdf (Page 7)

ET Manager 7

110VAC Transformer (ETMi-TRAN)

In situations where the ET Manager cannot draw electricity from a sprinkler controller’s

24VAC power supply, the 110VAC Transformer may be used to power the ET Manager (see

page 22 for specification).

Schedules and Settings

The ET Manager has several programmable settings to make it a site-specific tool.

Information such as soil type, root depth, precipitation rate, slope and microclimate condi-

tions are all taken into consideration to create the ideal schedule for each site. These set-

tings are critical to the efficiency of the ET Manager and sprinkler controller, and must be

programmed upon installation. Determining the ET Manager settings and the best water-

ing schedule for the sprinkler controller is made simple with the use of the ET Manager

Scheduler, software application included with each ET Manager, for more information see

page 50.

ADVANCED OPTIONS

Enable A then B Output (Control) Method

Some sites need to spread watering over 2 days, watering a portion of the site one night

then the remaining portion the next night. The Enable A then B method separates watering

of Valve Groups A and B over a two day period. Two common wires are required to use

this feature and the sprinkler controller must support the option to “overlap” programs.

Even though the sprinkler controller will attempt to operate both programs at the same time,

the ET Manager will only allow one valve group to operate at a time.

ET & Rain Pulse Output (Control) Method

There are advanced ET-based sprinkler controllers that can use the ET Manager as an ET

source. ET-based controllers that accept a pulse input as an ET value can be connected to an

ET Manager. The ET Manager provides a momentary switch closure for each 0.01 of ET. The

ET Manager has a separate rain pulse output that provides a momentary switch closure for

each 0.01 of rain. The rain data comes from the selected rain source. The sprinkler control-

ler uses these values to automatically adjust watering schedules.

To utilize the ET and Rain Pulse Output Method, the ET Manager must be programmed cor-

rectly and the sprinkler controller must be programmed to recognize pulse inputs.

Additional information:

• Application Notes for use with Maxicom

Central Control can be found on page 51.

• Details for using ET & Rain Pulse Output Method can be found in the ET Manager

Series Installation and Operation Manual, Chapter 8 (a PDF version can be found on

the ET Manager Resource CD).

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Rain Bird WS PRO LT Specifications Page 7