Toro TWRS Manuale utente

Wireless Rain Sensor Series

Rain Sensor, Model TWRS and

Rain/Freeze Sensor, Model TWRFS

User’s Guide

RainSensorAlpha7 3/10/2005 3:31 PM Page I

Introduction

The Toro Wireless RainSensor system, model TWRS for rain sensing and TWRFS for rain and freeze

sensing, is a powerful water conservation and management tool that connects your automatic

irrigation system to actual environmental factors vital to the health and maintenance of your

landscape. Without sensor input, the controller simply turns the sprinklers on and off based on a

routine irrigation schedule. Linking controller operation to real-time rain and/or freeze conditions

eliminates unnecessary irrigation and dramatically reduces resource consumption–all without

compromising the health and beauty of your landscape. And–it’s wireless. No cable to run or holes to

drill. Simple installation and setup delivers reliable, intelligent sensor control in a matter of minutes.

Contents Page

Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Receiver Module Features . . . . . . . . . . . . . . . . . . 4

Installing the Receiver Module . . . . . . . . . . . . . . 5

Initial Sensor System Test. . . . . . . . . . . . . . . . . . . 8

Sensor Module Features . . . . . . . . . . . . . . . . . . . . 9

Installing the Sensor Module . . . . . . . . . . . . . . . 10

Freeze Sensor Site Selection. . . . . . . . . . . . . . . . 13

Set Temperature Activation Threshold. . . . . . . . 14

Water Conservation Feature . . . . . . . . . . . . . . . . 15

Smart Bypass Feature . . . . . . . . . . . . . . . . . . . . . 16

Water Delay Feature . . . . . . . . . . . . . . . . . . . . . . 16

Signal Strength Display Feature. . . . . . . . . . . . . 17

Battery Strength Display Feature . . . . . . . . . . . . 17

Dry Out Feature . . . . . . . . . . . . . . . . . . . . . . . . . 18

Fail Safe Feature . . . . . . . . . . . . . . . . . . . . . . . . . 18

Turn Receiver Module Off and On . . . . . . . . . . 20

Set or Restore the Sensor Address Code . . . . . . 20

Sensor Module Battery Replacement. . . . . . . . . 21

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 22

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Warranty Information . . . . . . . . . . . . . . . . . . . . . 25

Electromagnetic Compatibility. . . . . . . . . . . . . . 26

RainSensorAlpha7 3/10/2005 3:31 PM Page II

The wireless sensor system is comprised of a programmable, weather-resistant receiver module

and a sensor module with built-in transmitter. The receiver installs next to the irrigation controller

and connects to the controller’s 24 Vac power source and sensor input terminals (if equipped)

or splices directly into the irrigation valve common wire. The sensor module is installed within

range of the receiver in a location that best represents the landscape’s sun/shade exposure and

can provide reliable communication from the sensor to the receiver.

Once activated by preset rain or low temperature levels (Rain/Freeze model only), the sensor

communicates to the receiver via ultra high-frequency radio signal. The receiver responds by

placing the controller’s automatic watering schedule on hold or by simply opening the valve

common circuit to prevent sprinkler valve operation. When watering is once again needed,

the sensor system automatically resets, allowing automatic irrigation to resume.

More than just an accurate rain switch, the wireless sensor system actually adapts to your

landscape with the simple, yet sophisticated Water Conservation feature. Just choose the

conservation level that corresponds to your landscape soil type and the sensor location.

A dry-out period, adjusted for actual rainfall duration, is automatically placed after the sensor

system resets to effectively delay automatic watering until it is actually needed.

Other standard features include a Smart BypassTM button that gives you manual control over the

sensor system with a single touch, system status indicators to see at glance that your sensor

system is active and watering is on hold, watering delay to postpone automatic watering from

1 to 5 days, air temperature displayed for Rain/Freeze sensors and even a Fail-safe mode to allow

irrigation in case the sensor system is not performing properly.

RainSensorAlpha7 3/10/2005 3:31 PM Page 1

Getting Started

The wireless rain sensor system is designed for easy installation, setup and years of trouble-free

operation. In most cases, the system components can be installed and fully operational within

minutes. All you will need is a Phillips screwdriver and basic do-it-yourself skills.

If you have problems with any portion of the installation, or the product does not seem to function

properly, refer to the Troubleshooting section on page 22 first. If the problem is not listed, or the

remedy does not seem to help, call the Toro Irrigation help line at 1-877-345-8676 for assistance.

Here’s all there is to it:

The receiver is installed and connected

to your irrigation system controller.

Step 1

The sensor and receiver are tested at close

range to verify operation.

Step 2

RainSensorAlpha7 3/10/2005 3:31 PM Page 2

The sensor is adjusted to the preferred

rainfall activation level.

The sensor is installed using the Quick ClipTM

mounting bracket or pipe-mount adapter.

The operating features are set to your

preferences.

A sensor installation site is chosen and the

system is tested again to verify operation.

Step 5

Step 4

Step 6

Step 3

RainSensorAlpha7 3/10/2005 3:31 PM Page 3

Receiver Module Features

1–Setup Button–Accesses the sensor system operating features.

2–Adjust Button–Scrolls through and selects settings within the

system operating features.

3–Mast Antenna–Adjusts easily for best signal reception.

4–Digital Display–High-resolution LCD screen provides visual

reference for sensor system operating features.

5–Sensor Status Indicators–Illuminates when sensor system is

active and automatic watering is on hold. Flashes when sensor

is active but has been bypassed to enable automatic watering.

6–Smart BypassTM Button–Multi-functional use. Pressed to

bypass sensor operation, allowing automatic watering to

resume.

Switches the Water Delay feature on and off.

7–Water Conservation LEDs–Indicate the Water Conservation

feature level selected (Minimum, Medium or Maximum).

8–Hinged Cover–Opens downward for receiver control access.

Closed position protects receiver when installed outdoors.

RainSensorAlpha7 3/10/2005 3:31 PM Page 4

Installing the Receiver Module

Important: Installation of this product must comply with national and local building and

electrical codes. For assistance, contact a professional irrigation system contractor in your area.

The receiver module is suitable for either indoor or outdoor installation. Select a location next to

the controller that provides the following conditions:

• The display screen is clearly visible and the control buttons are easily accessed.

• The connection cable can reach the controller wiring terminal strip without straining.

• The antenna will be unobstructed and is able to be adjusted.

1. Install one of the provided stainless steel screws into the wall at the

intended receiver location. Leave a 1/8" (3mm) gap behind the screw head.

Note: Use screw anchors if installing the receiver on drywall or masonry.

2. Hang the receiver on the screw ensuring the keyhole slot drops down

onto the screw shaft. Back the screw out as necessary for good fit.

3. Install a second screw through the lower tab to secure the receiver.

4. Route the connection cable through the bottom of the controller cabinet

to the wiring connection terminals.

Important: If the receiver module is installed outdoors, be sure to keep the cover in the

closed position when you do not need to view the display or access the control buttons.

Figure 1

RainSensorAlpha7 3/10/2005 3:31 PM Page 5

Connecting the Receiver Wires

CAUTION: The receiver requires continuous 24 Vac power for operation. Connecting to

110 Vac or higher will result in irreparable damage. Ensure power to the controller has been

removed prior to connecting the receiver wires.

The sensor system is designed to work with most makes and models of irrigation controllers.

• If your controller is equipped for sensor connection, follow the steps in Wiring Procedure I.

• If your controller is not equipped for sensor connection, use Wiring Procedure II on page 7.

Wiring Procedure I (sensor-ready)

Note: Refer to your controller user’s guide for

the type of sensor required: Normally Closed

(NC) or Normally Open (NO).

1. Locate the sensor connection terminals,

usually labeled “SENSOR” or “SN.”

Remove the jumper if one is installed.

2. Attach the White wire to either sensor

terminal (disregard + and – symbols).

3. For a normally-closed sensor, attach the

Brown wire to the remaining sensor terminal.

Tape back the Yellow wire. See Figure 2.

COM

PUMP/

MV 24 VAC

21 34 SENSOR

Red

White

Brown

Yellow

Red

White

Brown

To Val ve s

Jumper

Figure 2 - Normally-closed Sensor

RainSensorAlpha7 3/10/2005 3:31 PM Page 6

For a normally-open sensor, attach the

Yellow wire to the remaining sensor terminal.

Tape back the Brown wire. See Figure 3.

4. Attach the Red wires to the 24 Vac terminals.

Important Most controllers with sensor

connections also provide a control switch to

bypass sensor operation if necessary. Check

the switch setting to make sure it is not in

the Bypass or Active position.

Wiring Procedure II (no sensor feature)

1. Locate the valve common wire terminal,

generally labeled “C” or “COM”, and remove

all common wires for valves, pump relay, etc.

2. Attach the White wire to this terminal.

3. Splice the Brown wire to the common wires

and insulate the connection using a wire nut

or electrical tape. Tape back the Yellow wire.

See Figure 4.

4.Attach the Redwires to the 24 Vac terminals.

COM

PUMP/

MV 24 VAC

21 34 SENSOR

Red

White

Yellow

Red

White

Yellow

Brown

To Valves

PUMP/

MV 24 VAC

COM

21 34

Red

White

Brown

Red

Common

To Valves and

Pump/MV

Yellow

Figure 3 - Normally-open Sensor

Figure 4 - Splice Valve Common

RainSensorAlpha7 3/10/2005 3:31 PM Page 7

Initial System Test

Before installing the sensor module, test the sensor at close range to verify operation. Once this

test has been completed satisfactorily, the sensor module can be installed. If a problem occurs

during the test procedure, refer to “Troubleshooting” on page 22.

1. Apply power to the controller and check its operation to confirm that it works properly.

2. When power to the receiver is first applied, the “Min”

Water Conservation indicator will illuminate. The

rain sensor receiver (TWRS) will display alternating

boxes (Figure 5). The rain/freeze sensor receiver

(TWRFS) will display two flashing bars (Figure 6).

3. Hold the sensor next to the receiver. Press and hold

the sensor test spindle as shown in Figure 7.

Important: The test spindle must held down for

least of 15 seconds to establish communication.

The Sensor Status indicator will illuminate (Figure 8),

the Antenna symbol will flash and the signal bars

will appear. Release the test spindle. The TWRS

receiver will display alternating boxes (Figure 9)

and the TWRFS receiver will display the current air

temperature (Figure 10).

Figure 6

Figure 7

Figure 5

Figure 8

Figure 10 (TWRFS)Figure 9 (TWRS)

RainSensorAlpha7 3/10/2005 3:31 PM Page 8

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