Nelso twig Manual de usuario
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TWIG USER GUIDE-2 8/14
Wireless Controls
IrrIgatIon technology for the future
User Guide
INTRO - QUICK SETUP/PROGRAM
1. Introduction
2. System Overview
3. How to Setup the TWIG system
4. Programming Instructions
5. Using the Adjust function
6. Using the Manual Control function
7. Technical Section (Application factors)
8. Specications and Compliance
Nelson Irrigation Corporation
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
TWIGwirelesscontrols.com
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t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
QUICK SETUP/PROGRAM
SETUP TD200 COnTROllER
1. Power on then rotate the left dial to SETUP.
2. Select ‘Set Date & Time’ on the list and press ENTER.
Adjust then exit.
See section 3 for details about the network setup.
PROGRAM
3. Rotate the left dial to PROGRAM.
4. Select ‘CREATE PROGRAM’ on the list and press ENTER.
5. Create a name for the new program.
6. Set initial time that each group will run. Individual group watering duration
can be adjusted when defining groups.
7. Set the number of groups (groups are valves that run altogether).
8. Select the TWIGs wanted in each group.
9. SAVE the program.
10. Turn left dial to adjust, change status to ready, then you can start
the program.
See section 4 for more detail about programing the TD200 and setting the network.
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t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
1.0 InTRODUCTIOn TO nElSOn wIRElESS COnTROlS
The Nelson wireless control basically consists of TWIG units on valves that are operated by the
TD200 controller. It provides remote operation for up to 100 TWIGs used in connection with Nel-
son valves. In addition the TD200 provides a historical data log of the field watering events.
1.1 wIRElESS vAlvE COnTROl SySTEM COMPOnEnTS:
Two main components make the communication in the field: the TD200 controller and the TWIG field units.
The system uses the license free 900 MHz radio band to send wireless commands to TWIG units. Radio
communication is transmitting and receiving information every 20 seconds.
1.2 TwIG nETwORK ESSEnTIAlS:
Follow this guide to assure you get the right signal to the right place and have a reliable system. Watch for the
‘TWIG note’ graphic that highlights tips and suggestions.
1.2.1 CAREfUlly lOCATE ThE COnTROllER AT ThE fIElD. The TD200 controller is the heart of the
control system. It is best to locate it near a central place so that the distance to each TWIG is minimized.
Typically, electric power is available near the pump so the TD200 is usually placed there. Antenna efficiency
improves when located at a high point so keep that in mind when choosing the controller location. The
controller cabinet is designed for outdoor use and is water resistant. However, it is a good idea to provide
some cover to help it last longer and reduce temperature and moisture aging.
1.2.2 STAy wIThIn SIGnAl RAnGE.
A common problem is to space the
TWIG units too far apart and not consider
obstructions that can block the signal. Be
sure to check the range guide in Section 7.
Weak signal strength can make a difference
in battery life. That is because a weak signal may result in failed communication requiring the controller to
frequently retry thus using more battery power. Batteries are an essential part of the system and effective
power management has been designed-in. Remember the system is two-way and the radios will have to
work harder if there are a lot of “retries” required. Keep within range to have a good, reliable system.
TWIG
note
REMEMbER TO lOCATE ThE
COnTROllER SO ThAT TwO wAy
COMMUnICATIOn IS GOOD fOR All TwIGS.
TWIG
note
OnE TD200 CAn
COnTROl UP TO
100 TwIGS.
TD200 COnTROllERvAlvE
TwIG
4
t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
1.2.3 USE Of REPEATERS. If the distance to the valves exceeds the signal range then use a repeater to
make the communication reliable. A communication chain is no better than the weakest link. The potential
for a communication break increases as more repeaters are in a chain. A network that utilizes direct TD200
to TWIG communication will be more robust than one with a long repeater chain. Remember the allowable
number of repeaters for one TD200 is nine.
1.3 ThE TwIG lIST Of GOOD wIRElESS PRACTICES:
Following some rules of good practices will provide for successful radio communication. Operating outside
of good practices may cause your communication to malfunction and stop working.
• Keep within the recommended range. Locate antennas as high as practical.
• Stay within the recommended environmental limits. Plan for crop growth so it does not block the
signal and so that you can have good communication for the life of the crop.
• Never operate with any other battery or power source than specified.
• It is not allowed to co-locate (be next to each other or closer than within 12 inches) with other
radios and to transmit simultaneously.
• Never operate with any other antenna than what is supplied for approved use.
• TWIG wireless control systems are pre-approved by the FCC and do not require licensing; however,
installations near an airport are subject to stricter rules. Check with the local FCC for more details.
• Keep in mind that the TWIG should be accessible because they contain batteries that will need to
be replaced after some period of time.
TWIG
note
TwIGS ThAT ARE TOO fAR APART wIll OvERwORK
ThE bATTERIES. blOCKED OR wEAK RADIO SIGnAlS
CAn AlSO OvERwORK bATTERIES.
TD200 TWIG
Repeater (if needed)
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t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
2.0 OvERvIEw Of SySTEM COMPOnEnTS
The wireless control system is built with Nelson’s powerful radios
inside the TD200 controller and the TWIG field units. Two way
communication is between the TD200 and the TWIGs. These join
together to make a field network.
2.1 ThE COnTROllER AnTEnnA:
The antenna for the TD200 is the communication focal point
for signals to and from the field. Take great care in locating the
antenna. Typical mounting elevation is 20-30’ high if possible but
not more than 50’. A clear line-of-sight between the TD200 and
the TWIGs is essential for strong communications. The network is
made when the TWIGs join up to the TD200 controller.
2.2 ThE TwIG hAS InTERnAl AnTEnnAS:
Each TWIG has internal antennas that send and receive. To work it must receive the TD200 signal. The
TWIG has a display for configuration so it can easily be setup in the field. It is important that the TWIG
box be in the upright position to get a good signal (don’t lay the TWIG box on back or side). You may be
able to get slightly better antenna strength if the box door latches are lined up toward the controller. More
information about TWIG setup is in Section 3.
2.3 COnTROllER SIGnAl AnD vAlvE RESPOnSE TIME:
The TWIG system communicates every 20 seconds which provides good
response time. However, radio transmissions are sent to check and confirm
valve status at the top of the minute. Remember valves may take a few sec-
onds to actually change switching open or close.
2.4 MUlTI-vAlvE TwIGS CAn OPERATE MORE
ThAn OnE vAlvE:
One advantage to having valves close together is that a multi-valve TWIG is able to operate up to four valves.
A pair of wires is connected to each of the valve solenoids and the TD200 recognizes each one as an indepen-
dent valve by the last digit in the TWIG ID (1,2,3 or 4). Extension wires to solenoid should be not more than 50
ft long. More information about wire connection is in Section 7.
2.5 bATTERy lIfE IS wEll MAnAGED by TwIGS:
The TWIG is designed to manage battery life using a latency
(deep sleep) technology to get the longest service life. Two
“D-cell” batteries in the TWIG typically work for a whole sea-
son. Standard alkaline batteries were selected because they
are readily available.
TWIG
note
PlAn TO REPlACE bATTERIES
AnnUAlly On A REGUlAR bASIS
(SOME USERS DO IT AT ThE START
Of ThE SEASOn).
antenna Antenna mounting
is typically on a
pole about 20 ft
high. That can
vary depending
upon line of sight.
TWIG
note
SAfETy PRESSURE
RElIEf IS An IM-
PORTAnT PART Of
A GOOD DESIGn
AnD hAvInG IT IS
ThE fIRST RUlE Of
AUTOMATIOn.
6
t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
3.0 hOw TO SETUP ThE TwIG SySTEM
Start the system setup at the TD200 controller. Otherwise you may waste time because the network
cannot be setup if the TD200 is not turned on. When powered on, the TD200 controller sends the radio
transmission signals and permits the appropriate TWIG units to join with it. The following sequence are the
steps to take for setup.
3.1 MAKE A fIElD MAP fOR wIRElESS COnTROl:
The first thing to do is get a field map. This will help you place the TD200 controller in the best place. Using the
map, determine the distances from the controller to each TWIG valve. Check the line-of-sight and avoid any
obstacles. Typically a TWIG-1 model will be needed at each valve. In some situations the multi-valve model can
be used if the valves are separated only by a short distance (50 feet or less). Keep within the allowed range
shown on the bar graphs in Section 7. Considering the crop and the elevation of the antenna, make a plan for
any repeaters that will be needed. The map will be useful later to write the TWIG ID number next to each valve.
3.1.1 TD200 RADIO COMMUnICATIOn UTIlIzES A STAR nETwORK.
The “star” network is a simple route of the radio signal. The sketch below shows how a TD200 controller
“star” network links to the TWIGs. Keep in mind that the radio can project in all directions at once, so very
complex signal routes can be developed. The TWIG communication is directly to the controller. If a TWIG
Repeater is used then the link distance can be extended.
TWIG
note
bEGIn yOUR SySTEM SETUP AT ThE TD200 COnTROllER.
AlwAyS MAKE A fIElD MAP bEfORE DOInG A COnTROl PlAn.
TD200 controller
Communication link
TWIG-link
TWIG-link
TWIG-link
star network
TWIG
note
ThE STAR ROUTInG IS
UTIlIzED bECAUSE IT IS
EASy TO SETUP AnD TO
TROUblEShOOT. TwO-
wAy COMMUnICATIOn
IS DIRECT bETwEEn
TwIG AnD TD200
Figure 3.1 Example of
communication for a star
(radio signal between
TD200 and TWIGs)
7
t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
3.2 ThE TD200 fROnT PAnEl:
Display Selector Selector dial for
watering mode
USB memory.
Escape or step
backward
Figure 3.2
Help Button
ID or network
number
Navigation Buttons
Press ENTER to select line where is pointing. Then press
ENTER to save a change.
Use the navigation buttons to move around and change
values on the display screen.
Line pointer
Edit or change of input
Valve open
Valve closed.
Battery level of the lowest TWIG
Radio signal strength bars
Set Programs to cycle continuously.
More information available by pressing the right arrow.
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t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
3.3 SETTInG UP ThE COnTROllER
Start by setting up the TD200 date and time. This information is used
for scheduling and for logging data.
3.4 SCREEn DISPlAy fOR EACh DIAl
The selections for each dial are listed here. There are four lines that
show on the screen and the lower lines can be seen by using the scroll
down button to show all available options.
Figure 3.4.1
SETUP MEnU
Figure 3.4.2
PROGRAM MEnU
Press minus button to display all menu options.
Press minus button to display all menu options.
To get details of
program press
ENTER to see
screen at left.
PRESS ThE ? bUTTOn Any
TIME TO DISPlAy ThE On-
SCREEn hElP. whEn ThE
hElP SCREEn ShOwS,
PRESS RIGhT ARROw fOR
MORE InfORMATIOn.
TWIG
note
9
t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
To get details of
program press
ENTER to see
screen at left.
Figure 3.4.3
ADJUST DIAl MEnUS
Figure 3.4.4
ADJUST (SElECT PROGRAM) MEnUS
This is the duration for watering set
time of each Group for each cycle of
operation.
This is where you can select the following options:
READY, SUSPEND, SCHEDULE, OFF, RESET
To get details of
program press
ENTER to see
screen at left.
Press down arrow to see Groups
10
t
848 Airport Road, Walla Walla, Washington 99362 U.S.A.
Tel: +1 509.525.7660 / Fax: +1 509.525.7907
twigwirelesscontrols.com
Press minus button to display all menu options.
The purpose of the VIEW screen is to show the
status of the programs, the watering duration
and time remaining for Groups. You can rotate
the dial to VIEW at any time without causing a
change to operation of the programs.
3.5 TwIG MEnUS:
Exploring the TWIG. When the TWIG is shipped from the factory it has its own identity number
(ID). ID numbers beginning with A operate one valve, B two valves and D four valves.
Identity number (ID) is factory set.
Figure 3.4.5
vIEw SCREEn
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