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Rain Bird WS PRO LT Specifications Page 47

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ET Manager
™
Application Notes
Rain Bird Maxicom
2
Central Control System
The Rain Bird ET Manager (Model ETMi) can provide the Rain Bird Maxicom
2
Central Control System with
ET, rainfall amounts, or a sensor interrupt based on rain, low temperature, and high wind conditions.
The ET Manager receives hourly weather information broadcast by a Weather Reach Signal Provider
who accesses a network of weather stations.
Maxicom
2
site hardware pulse sensor inputs recognize a momentary dry contract switch closure for
each 0.01” of ET and/or Rain. These inputs are configured as a Weather Source in the Maxicom
2
soft-
ware. Maxicom
2
site hardware switched sensor inputs recognize an open or closed switch condition,
which can be programmed in the Maxicom
2
software to interrupt irrigation.
Choose one of the two ET Manager advanced output methods to provide sensor input to the Maxicom
2
System:
• ET and Rain Pulse: ET and rainfall data is input to the Maxicom
2
site hardware using a “pulse”
method. A dry contact switch closure represents 0.01” of ET or Rain. The relays operate in a normal-
ly open condition.
• ET Pulse and Weather Interrupt: ET data is input to the Maxicom
2
site hardware using a “pulse”
method. A dry contact switch closure represents 0.01” of ET. The relay operates in a normally open
condition. A Weather Interrupt can be input to the Maxicom
2
site hardware using a switched con-
tact method (open or closed). The Weather Interrupt is utilized to prevent watering if any one of the
three Weather Interrupt conditions occurs: rain, freezing conditions, or high wind. The relay oper-
ates in a normally closed condition.
Maxicom
2
Site Hardware Requirements
• ET and Rain Pulse:
- Maxicom
2
Pulse Decoder input: The ET and Rain Pulse require individual Maxicom
2
Pulse
Decoders connected to individual channels on the CCU two-wire path.
- Maxicom
2
ESP-SITE Satellites and ESP-SAT Link-Radio Satellites input: ESP-SITE Satellites
and ESP-SAT Link-Radio Satellites can be used for either an ET or Rain input but should not be
used for both ET and Rain Pulse input with the ET Manager at this time.
• ET Pulse and Weather Interrupt:
- Maxicom
2
Pulse Decoder input: The ET Pulse requires a Maxicom
2
Pulse Decoder connected to
the CCU two-wire path.
- Maxicom
2
ESP-SITE Satellites and ESP-SAT Link-Radio Satellites input: The ET Pulse requires
Sensor Input A or B on a Maxicom
2
ESP-SITE Satellite or ESP-SAT Link-Radio Satellite.
- Maxicom
2
Sensor Decoder input: The Weather Interrupt requires either a Maxicom
2
Sensor
Decoder connected to the CCU two-wire path.
- Maxicom
2
ESP-SITE Satellites and ESP-SAT Link-Radio Satellites input: The Weather
Interrupt requires Sensor input A or B on a Maxicom
2
ESP-SITE-Satellite or ESP-SAT Link-Radio
Satellite.
ET Manager Application Notes 47
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