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USER MANUAL

1. Date Explanation 7B The ET balance will now be the sum of ETc for 7 2 and 7 3 i e 0 51 As this is above the Max ET the program will only apply 0 35 and the remaining 0 16 will be left in the ET balance 7 4 Just a normal day ET Rain from the past day is added to the ET balance and it irrigates 75 A lot of rain ETc becomes negative and so does the ET balance No irrigation 7 6 Another day with a lot of rain No limit in the ET balance as there is no soil holding 7 7 8 Positive ETc and the ET balance increases but still no irrigation Example B 9 Max hourly rain The program is set to run one time every day i e it will if ET balance is greater than Min ET The example starts with 0 20 ET no rain and an empty ET balance 92 LTD User Manual Hourly irrigation Max hourly rain E ET hour E Rain hour E Usable Rain hour I E d d d o 12 00 1 00AM 2 00AM 3 00 AM 4 00AM 5 00 AM 6 00AM 7 00 AM 8 00AM 9 00AM 10 00 11 00 12 00 PM 1 00PM 2 00 PM AM AM AM The example shows the effect of max hourly rain If it rains more than Max hourly rain within an hour only the Max hourly rain is used Options for Getting ET Data Your controller will accept ET data from a number of sources and the mechanisms using the ET data to calculate irrigation aspects are identical regardless of input method The LTD accepts ET data from the follo
2. Numbers 12 01 24 Hour Cycle 11 59 PM AM Day Starting Irrig E T Rain Etc End balance atio balance n 1 0 20 0 00 0 20 0 20 2 0 20 0 20 0 29 0 10 0 19 0 19 3 0 19 0 00 0 32 0 00 0 32 0 51 No irrigation as ET balance lt min ET 0 20 88 LTD User Manual 0 51 0 51 0 26 0 11 0 15 0 15 Irrigate for the last two days and no max ET 0 15 0 15 0 27 0 53 0 26 0 26 No irrigation as ET balance lt min ET 0 20 0 11 0 00 0 28 0 50 0 22 0 33 No irrigation as ET balance lt 0 0 33 0 00 0 24 0 00 0 24 0 09 No irrigation as ET balance lt 0 0 09 0 00 0 29 0 00 0 29 0 20 No irrigation as ET balance lt 0 Explanation Date Explanation 7 1 The ET balance is set to ETc ET Rain As the ET balance is gt Min ET the program will run and use the entire ET balance 7 2 The ETc 0 19 which is added to the ET balance As the ET balance is less than Min ET the program will not run 7B A lot of irrigation because there is no limit in Max ET 7 4 As 7 2 75 A lot of rain ETc becomes negative and so does the ET balance No irrigation 89 LTD User Manual Date Explanation 7 6 Another day with a lot of rain 7 7 Positive ETc and the ET balance increase but still no irrigation 7 8 Now we begin
3. ST16 10 min If two programs wish to run the same station at the same time the station will simply keep running until the last program no longer needs it running Now let s look at how you configure the individual stations in a program Configuring a station in a program 1 Turn the dial to PROGRAM PAUSE AUTO RESUME STOP MANUAL SET DATE amp TIME FF o PROGRAM 2 eo RAIN OFF C RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS d U ADVANCED J TWO WIRE SOLENOID AMPS SHORT FINDING 00 p 453 e SETUP SENSORS e PROGRAMMING 19 LTD User Manual Now the display will look something like this Program 11 Total run time 0 00 00 Sta 0 SMTWTFSSMTWTFS 0 100 P 2 Usethe item selectors to scroll to the program you wish to configure a station for 3 Now turn the dial to the RUN TIME position Say you selected program 2 then the display will look like this Program 2 Total run time 0 00 00 Select station Tf STL Run time hh mm ss 4 Use the item selectors to select the station you wish to configure and push the ENTER button Now the cursor jumps to the right of the display allowing you to select the station run time 20 LTD User Manual A couple of notes on run times Run times longer than four minutes are run in ten second bloc
4. E OF RAIN OFF RUNTIME o PROGRAM e RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS o a ADVANCED J TWO WIRE SOLENOID AMPS SHORT FINDING 13 300 p 454 e SETUP SENSORS PROGRAMMING Now the display will tell you which program will run next Program 1 Start Tue 09 44 PM 08 40 PM Total Stations 2 Total run 0 40 00 In this case the next program that will run is number one It has two stations and will run on Tuesday at 09 44 PM for 40 minutes LTD User Manual You don t have to do anything more just leave the controller in AUTO mode and the program will be run automatically Once the program starts the display will tell you what station is running and the remaining run time for both the running station and the entire program Running program Running station Current time Program 1 Station STl 12 20 PM Remain 0 28 00 Remain 0 08 00 3GPM Remaining program run Remaining station run time Current flow time Once this program has finished the next one in line will appear in the display Pausing a Running Program From time to time it may be necessary to pause the irrigation Here s how you put a running program on hold 38 LTD User Manual 1 Use the item selectors to locate the program you wish to pause and push the PAUSE RESUME button The respons
5. Defining a custom irrigation period ueeeneesseenensenenennsnnnneennnnnnnnnnnnnnnnnnnnennnnne 147 Example G 1 Skewed days with custom irrigation periods 147 Configuring the Irrigation Period cccceccccccessecceeesesceesceeeeeeceseeaeeees 149 Appendix H Advanced irrigation Misting Cycle and Soak c c cccccccsssssseececsessseeeeeeeeseesees 151 How is This Different from Regular Programs cccccescccccceeeeseeceeeeeeeeeeees 151 When the LTD Alters Your Program cccccccsssesescceeeeececeseeesecceeeeeeeeeeees 152 How to Configure for Misting or Cycle amp Soak uueenceeeeenessseeennnnnennennnnnennnn 153 Full misting program example ccccessscccececeesssseceeceesceesesteaeeeeees 153 Enabling Misting oneni acsescectics cscceatereace sais beact nea a ecace end eceeeaes sdeals cathe 154 Setting the Start Times With Count and End Time uuneneeeneenn 156 Things t Keep in Mihd ala este 158 GOSS AMY an hun ine as essen E niea Dh coon lenkte A 159 LTD Installation and troubleshooting Chapter 1 Introducing LTD The LTD is a microprocessor based irrigation control system A central controller and up to 50 field stations comprise a complete system In addition the controller will accept input from several external sensors in order to adjust its irrigation to the local weather conditions The Controller The heart of a LTD based system is the contr
6. In plain words the capacity required by the station plus the capacity already used must not exceed the total system capacity The required capacity and the capacity in use is determined from the station flow whether entered or learned For more information turn to Appendix C Setting Expected Station Flow on page 108 LTD User Manual If a station can not be started it will be queued in pending state On the controller this will appear as Waiting just as paused stations However pending stations have a higher priority than others next time the LTD frees some capacity This is known as the stacking mechanism There are a couple of things to keep in mind when using flow management e When running in AUTO mode manually started stations will overrule the flow management and ignore the higher priority of pending stations Manually started programs will obey the flow management though e The entire concept of flow management is ignored when running in MANUAL mode e When pausing a program the LTD will release the capacity to flow management and thus the program might go into pending state when resumed if the capacity is used up by other stations Setting the System Flow Capacity If you tell the LTD about the flow capacity of your pipes the controller can automatically queue up stations that would exhaust the capacity by starting Here s how you enter the flow capacity at the controller 1 Turn the dial to ADVANCED and s
7. Rain sensor 01 19 PM 45 LTD User Manual The display will toggle between the two modes in short intervals If you had multiple alarms the controller will toggle to a different alarm each time it toggles to notification Program 2 Start Tue 05 00 AM 03 14 PM Check Alarm List Receiving alarm notifications on email If your communication subscription with your supplier allows it the LTD will support sending out alarm notifications to one or more email addresses To configure your controller to email alarms follow this procedure 1 Turn the dial to ADVANCED 46 LTD User Manual PAUSE AOTO RESUME STOP MANUAL SET DATE amp TIME E OF RAIN OFF RUNTIME o PROGRAM e RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS o J ADVANCED TWO WIRE SOLENOID AMPS SHORT FINDING 13 e0 p 5 e SETUP SENSORS PROGRAMMING Now the display looks like this Advanced Setup 1 FloStack 2 Scroll down to Alarm Notification and press the ENTER button Now you see the following display vr Alarm Notification 1 Email addresses 3 Select Email addresses and press the ENTER button If no email addresses are entered you can select Add new 47 LTD User Manual Email addresses Add new Now you can enter an em
8. you have to make sure that all your programs are configured to apply exactly 0 20 every day So you have to look at the application rate in each zone and adjust run time and number of start times accordingly Let s look at an example Example B 3 Calculating ET run time The following formula is used to calculate the run time values explained in the table below 60 x ETO x Kc Prx le Description Example value 60 A constant value 60 ETo Evapotranspiration base 0 20 1 We recommend using the highest monthly ET for your area as the base 80 LTD User Manual Ke Crop coefficient 0 50 Pr Precipitation rate from 0 45 manufacturer s data e Irrigation coefficient 0 80 Based on the example values above the run time would be 60 x 0 20 x 0 50 0 45 x 0 80 16 7 minutes e Itis possible to set a minimum ET value that determines whether irrigation will take place at all see Step 4 Page 96 There can be several reasons to set aminimum ET value e If you only provide an insignificant amount of water the effect is useless e If you have rotating valves maybe they won t make a complete rotation before their short run time is over and you ll get uneven irrigation But isn t a bit of water better than no water at all Yes but take a look at this example to see why setting a minimum ET can be a good idea Example B 4 How minimum ET value works In this
9. Now you ll see the following display Alarm thresholds 1 Alarm Reaction Delay 3 Use the item selectors to select 2 High Flow Now you ll see the following display sr High FLow High flow limit OOO0GPM 4 Use the item selectors to set the maximum flow in gallons per minute If this flow is exceeded the controller will raise a high flow alarm If this alarm is activated all running programs will be halted but the next program will be started normally when it is scheduled Of course if the next program also generates a high flow alarm it is halted too 102 LTD User Manual 5 Push the ENTER button to save your selection Setting the Flow Deviation 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 3 FloGuard and push the ENTER button Now you ll see this display FloGuard Station Status 2 Choose 2 Alarm Thresholds and push the ENTER button Now you ll see the following display Alarm thresholds 1 Alarm Reaction Delay 3 Use the item selectors to select 3 Flow Deviation Now you ll see the following display xx Flow Deviation Flow deviation 000 4 Use the item selectors to set the deviation percentage from expected flow The controller will raise an alarm if the flow exceeds or falls short of the expected flow with this many percent 103 LTD User Manual If this
10. The same picture as the 50 regulation just that the progression towards the nominal value is much faster How irrigation is adjusted by moisture sensors The same results can be drawn for the other soil types The only difference is the VSM range Min and max for ET come into play when the system starts to use the ET balance i e after the moisture correction which is on what we add to the ET balance Max hourly rain is during the day when we collect rain Soil holding is the maximum that the ET balance can go negative 132 LTD User Manual Soil moisture starts at 0 24 ae Loam Optimal soil 100 regulation min ET Field capacity Optimal Permanent WET day Rain day mETm WET Balance Irrigation E Soil moisture Compared to the similar example in the beginning the minimum ET of 0 15 avoids the small amount of irrigation on 7 4 and 7 14 133 LTD User Manual Loam Optimal soil 100 regulation Allow Prevent 7 15 Field capacity Prevent Optimal Allow Permanent wilting point m ET day m Rain day E ETM WET Balance Irrigation E Soil moisture In the example the Allow irrigation is set to 0 34 a
11. alarm is activated all running stations will be halted and blacklisted marked as failed Any programs that include failed stations will simply skip those stations and run the next one in the program To clear a station you need to mark it OK on the controller see Appendix C on page 112 for instructions You can read more about the expected flow in Appendix C Setting Expected Station Flow on page 108 5 Push the ENTER button to save your selection Setting the unscheduled flow threshold 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 3 FloGuard and push the enter button Now you ll see this display Elo ard 1 Station Status 2 Choose 2 Alarm Thresholds and push the ENTER button Now you ll see the following display Alarm thresholds 1 Alarm Reaction Delay 3 Use the item selectors to select 4 Unscheduled Flow Now you ll see the following display 104 LTD User Manual Unscheduled Flow usch flow limit O000GPM 4 Use the item selectors to set the unscheduled flow limit in gallons per minute This is an alarm that will be raised only when no stations are running You may have a minor natural leak of water in your pipes but here you can set the maximum flow allowed when no stations are running If this alarm is activated the normally open master valve NOM will be activated and remain on for 999 minutes
12. and Mapping Normally stations in a program will be run in the order indicated by their station ID numbers For more information turn to Chapter 3 Configuring Irrigation Programs on page 16 but you can circumvent this by assigning sequence numbers to stations instead The typical scenario if when you want to add a station to an existing installation instead of this station always being run as the last one due to its high ID number you can merge it into the middle of the pack by using sequence numbers Example E 1 Putting a new station in the middle of the run chain Consider a scenario where you have 40 stations with ID numbers from 1 to 40 placed in the terrain You want to add number 41 but you would like it to be run after station 20 instead of in the end of a program cycle To achieve this you would alter the sequence number for ST41 to 21 Normal run Run sequence after changing the sequence sequence number for ST41 to 21 ST1 ST1 ST2 ST2 St3 St3 ST20 ST20 ST21 SY41 ST22 ST21 ST39 ST38 ST40 ST39 LTD User Manual Normal run Run sequence after changing the sequence sequence number for ST41 to 21 ST41 ST40 If station run sequences are changed this will show when you are assigning stations to a program if you changed the sequence like in the example above scrolling through the station list you would see ST41 appear right after ST20 in the list The foll
13. are provided by a weather station and a rain sensor the rest is entered by you at the controller if you use historical ET data this is entered at the controller as well e Every day at midnight the controller adds up the ET and rain input it has received and calculates how to adjust tomorrow s ET Budget the amount of water that the irrigation should provide Let s look at two examples one where ET has exceeded the rain fall and one that works the other way around Example B 1 ET calculation with rain shortage In this example the rain fall has not been able to make up for the ET e 0 30 of water was lost due to ET in the last 24 hours e 0 20 of rain has fallen in the last 24 hours e Your soil holding is set to 0 50 Now we re short of 0 10 of water since this is the difference between ET and fallen rain Thus the ET Budget for tomorrow will be adjusted with 0 4 Since we don t have any excess water the soil holding value is irrelevant 78 LTD User Manual Example B 2 ET calculation with excess rain In this example the relationship is reversed and we have more rain than ET soil holding is the same e 0 30 of water was lost due to ET in the last 24 hours e 0 90 of rain has fallen in the last 24 hours e Your soil holding is set to 0 50 You would think that the ET budget for tomorrow should simply be adjusted with 0 6 because the excess rain lets us irrigate 0 6 less However since t
14. configure the program Setting the Start Times With Count and End Time 1 Create your program as explained in 1 but when you get to Chapter 3 Setting Start Times on page 28 swap that part out for the instructions in this procedure instead 2 Use the item selectors to navigate to the program you wish to adjust the start times for and push the START TIMES button Now you ll see the following display Program 1 Total run time 0 01 00 t 1 Start Cyc End 3 Use the item selectors to locate the one of the four runs you wish to set a start time for and push the ENTER button Now the cursor will jump to the right letting you set the start time Program 1 Total run time 0 01 00 t 1 Start 08 00 AM Cyc End 4 Use the item selectors to set the start time to 08 00 AM and push the right arrow to jump to the cycle field Cyc 156 LTD User Manual 5 Use the item selectors to set the count to four and push the right arrow to jump to the end time field zna Program 1 Total run time 0 01 00 1 Start 08 00 AM Cyc 4 End 08 04 AM If you cut the end time shorter one of two things will happen depending on which type of program you are dealing with If you are handling a water budget based program The cyc field will automatically decrease in order to fit in the cycles possible before the end time you ll see it when you have saved the start time e If you are handl
15. frame For more information turn to Appendix H Advanced irrigation Misting Cycle and Soak on page 151 3 Use the item selectors to locate the one of the 12 runs you wish to set a start time for and push the ENTER button Now the cursor will jump to the right letting you set the start time Program 1 Total run time 0 40 00 1 Start 12 00 AM 4 Use the item selectors to select the start time and push the ENTER button 26 LTD User Manual 5 Nowthe controller will return to the default display for setting start times and you can repeat steps two and three for all the start times you wish to set Also if you select another number for your start than the next chronologically available one the LTD will save your start with the next chronologically available number anyway This means that if you have two starts assigned and assign a third one but to the 6 run slot this will be saved as start 3 and appear as such the next time you want to edit the program In short you can say that your start times are sorted by time and their numbers compressed chronologically Adjusting Water Usage Water Budget or ET There are two ways of determining how to adjust the amount of water used by an irrigation program e Setting the Water Budget to a value between 0 and 250 percent Just as you would expect this determines how much water is used However since the controller simply tells a station to start or stop t
16. in parenthesis after each mode name 11 LTD User Manual OFF This is short for Irrigation Off practically this means that the connection to the controller is shut down and no programs will be run The display will still be lit and you ll see this message Idling in Irr Off mode Irrigation is OFF 08 39 PM Power to line has been shut off This is also where you can manually turn irrigation off when it s raining MANUAL In manual mode you can start a program or a single station manually AUTO AUTO is the normal operating position and is probably where your system will spend the most of it s time When in auto mode the LTD makes sure that all programs are run according to schedule Once everything is configured you switch the system to auto mode and leave it to do its job You also have the option of starting additional valves or programs manually while a program is running in auto mode This can be useful if you notice that an area needs a little extra watering but you don t want to create a new program to take care of it just turn on the nearest valve for a few minutes PROGRAM This is the mode you switch to when creating programs For more information turn to Chapter 3 Configuring Irrigation Programs on page 18 12 LTD User Manual SETUP This mode lets you configure the controller for various sensor inputs view alarms and rain event status ADVANCED In advanced mode you can co
17. in both pulses per second and gallons per minute Pulses per second Gallons per minute 0 0 111 LTD User Manual Inspecting and Toggling Station Status Stations can be blacklisted if the controller suspects that they are faulty and cause deviations in the expected flow For more information turn to Appendix C Setting the Flow Deviation on page 103 However the controller might blacklist an innocent station since all stations that are running when the deviation takes place are blacklisted So to enable these stations again you need to toggle their status from Failed to OK This procedure explains how you toggle station status Managing station status 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 3 FloGuard and push the ENTER button Now you ll see this display FloGuard 1 Station Status 2 Select1 Station Status by pushing the ENTER button Now you ll see a scrollable list of stations and their status Failed or OK 112 LTD User Manual ee Station status Station I STI Status Failed 3 Ifyou wish to toggle the status of a station locate it with the item selectors and push the ENTER button Using the item selectors again you can toggle the station between ox and Failed status 4 Push the cance button to exit the menu 113 LTD User Manual 114 Appendix D Moisture sensors With moisture sensors your contro
18. lernen ei u 57 Chapter 5 Advanced Features uesensssssseenensenssnnnnnnnennnnnnnnnnnnnnnnnnnnnsnnnnnnnnnnnnensennnnnnnsnsnsnnnnnenn 59 Intelliset u REES NR LE Eminem 59 FIO GUE 3 ee ehheiilashhe 60 EIOSt ck nn ie DRERN Sissi alone 60 Feature Manager A ns vaedveccbeaeechdevencnecaqntasceessccnet tee 60 Appendix A How Amount Based Rain Alarms Work cccccccsssssscecececsssscecececeeseeseeseseseseaaees 63 Example A T u een Renee sten 63 Example A 2 u be enhssiesna 65 Example A305 es a EAT 66 Configuring the Extended Rain Shutdown Feature cccccssssseccceeeeeeeeeeeeeeees 67 Examples using Different Parameters cccccccccsssecccceesseecesseeesesceseaeeeees 71 EXampleAA Aus an SEA E TA E 71 LTD Installation and troubleshooting Example A Dhen n e heissen ae 72 Example Ab rearea ei a a A ne a Ea a atn Rea 73 EXAM PIG A Aanensen r A E E EE 74 Appendix B Adding an ET Device cceccesessecececeesesessaesececessesseeeeeeecessaaseeeecsceesesaseeeeseeeeaaeas 77 How ET Works with the LTD ssssssesssesrrsrrrirsssrssssressrritrrrrrresssesserrrererees 77 Example B 1 ET calculation with rain shortage nenne 78 Example B 2 ET calculation with excess rain cccscccccccscessessteeeeeees 79 Example B 3 Calculating ET run time uuueneneeccseseeeennennnsesnennenennen nn 80 Example B 4 How minimum ET value works eeneeesseenenenenennnnn 81 SET N EEA E AEE AE 8
19. program has been paused the LTD will not aggregate the cycles that should have been run in the pause these cycles are just ignored and the program continues at the point it would be at had it not been paused Maximum system capacity met If a program tries to run a cycle when the maximum system capacity is reached this cycle is just dropped ET adjustments If ET adjustments have dictated that you can irrigate less then normally today reducing the number of cycles can be the outcome If the number of cycles is reduced a Repeat alarm is raised See Chapter 4 Alarms on page 45 for details 152 LTD User Manual How to Configure for Misting or Cycle amp Soak A misting program will typically run a number of stations for just a few seconds at a time and then add longer breaks between the program start times Here s an example of a simple misting program Station Run time ST1 0 00 05 ST2 0 00 08 ST3 0 00 15 ST4 0 00 06 ST5 0 00 08 And here s a program that start at various frequencies in different time intervals Full misting program example 153 LTD User Manual Start Details Irrigation will start 1 Start time 08 00 AM e 08 00 00 AM End time 09 00 AM e 08 25 00 AM Count 3 e 08 50 00 AM Repeat duration 10 minutes 2 Start time 09 00 AM e 09 00 00 AM End time 10 00 AM e 09 16 40 AM Count 4 e 09 33 20 AM Repeat duration 10 minutes e 09 50
20. shutdown takes place Adjustment You can use this value to prolong the duration of the rain shutdown If the rain alarm has been active for an hour and you set the adjustment to 3 0 the shutdown will last three hours Max How many hours can the rain shutdown be kept up Value is Shutdown between 0 and 999 hours 70 LTD User Manual Examples using Different Parameters The following examples show how the extended rain shutdown feature works on different parameters It is important to notice that using the amount based rain alarm feature in the LTD For more information turn to Appendix A How Amount Based Rain Alarms Work on page 63 utilize the normal ET to simulate a dry out which means the rain alarm will stay on as long time as the applied rain will last in respect to ET Normally it will not be necessary to extend the rain alarm in these cases If a rain contact is used without any dry out mechanism the extended rain shutdown is an excellent feature to avoid irrigation for a period after rainfall Example A 4 Rain min duration Adjust factor Max shutdown 45 minutes 1 1 1 999 hours LTD User Manual W Rain shutdown m Alarm Rain alarm extended rain shutdown in hours N o 0 60 120 180 240 300 360 Rain alarm in minutes The graph shows how the extended rain shutdown extends the rain alarm The rain itself is of course 1 hour for 60 m
21. to irrigate again Example B 8 No soil holding The program is set to run one time every day i e it will if the ET balance is greater than the Min ET The example starts with 0 20 ET no rain and an empty ET balance Daily irrigation Max ET m ET day Rain day m ETc B ET Balance E Irrigation Numbers 90 LTD User Manual 12 01 24 Hour Cycle 11 59 PM AM Day Starting Irrig E T Rain Etc End balance atio balance n 1 0 20 0 00 0 20 0 20 2 0 20 0 20 0 29 0 10 0 19 0 19 3 0 19 0 00 0 32 0 00 0 32 0 51 No irrigation as ET balance lt min ET 0 20 4 0 51 0 35 0 26 0 11 0 15 0 31 Irrigate for the last two days but only max ET 5 0 31 0 31 0 27 0 53 0 26 0 26 No irrigation as ET balance lt min ET 0 20 6 0 26 0 00 0 28 0 50 0 22 0 48 No irrigation as ET balance lt 0 Not limited by soil holding 7 0 48 0 00 0 24 0 00 0 24 0 24 No irrigation as ET balance lt 0 8 0 24 0 00 0 29 0 00 0 29 0 20 No irrigation as ET balance lt 0 Date Explanation 7 1 The ET balance is set to ETc ET Rain As the ET balance is gt Min ET the program will run and use the entire ET balance 7 2 The ETc 0 19 which is added to the ET balance As the ET balance is less than the Min ET the program will not run 91 LTD User Manual
22. 00 AM 3 Start time 10 00 AM e 10 00 00 AM End time 11 00 AM e 10 12 30 AM Count 5 e 10 25 00 AM Repeat duration 10 minutes e 10 37 30 AM e 10 50 00 AM Finally let s see how you go about creating a misting program on the controller let s say you want to configure the first start time in the example program above here s how you would do it The first thing you need to do in order to use the misting features is to enable them Enabling Misting 1 Turn the dial to ADVANCED 154 LTD User Manual PAUSE AUO resume STOP MANUAL SET DATE amp TIME OFF RAIN OFF C RUNTIME e PROGRAM RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e e ADVANCED TWO WIRE SHORT FINDING e SETUP SENSORS SOLENOID AMPS DECODER PROGRAMMING Now the display looks like this Advanced Setup 1 FloStack 2 Use the item selectors to scroll to item number 8 Feature Manager and push the ENTER button Now you ll see this display te te den wo Feature Manager 1 Ena Dis Cycle and End Time 3 Select1 Ena Dis Cycle and End Time Now you ll see this display 155 LTD User Manual Ena Dis cycle and End Time Enable 4 Use the item selectors to select Enable and push the enter button to save your setting And then you re ready to
23. 1 Total run time 0 40 00 Adjust current ET 000 00 If you want the program to run before it has received an ET budget from the controller you can provide one manually that will then be used as the starting point After that any ET figure that is received will be added to what you already entered thus you can also use this feature to do a one time adjustment of the ET For more information turn to Appendix B How ET Works with the LTD on page 77 Use the item selectors to set your desired ET budget for today Push the ENTER button to save your setting Programs that use ET adjustment instead of Water Budget adjustment will display the ET value instead of the Water Budget value in PROGRAM mode On switching between Water Budget and ET adjustment If you have previously set a program to be adjusted by either Water Budget or ET choosing the opposite setting will generate one of two warnings 31 LTD User Manual WARNING WB will be set to 100 Press Enter to Accept Cancel to Reject WARNING Accumulated ET will be 0 00 Press Enter to Accept Cancel to Reject Activating deactivating a Program You can toggle the Active Passive status of each of the 10 programs only active programs are actually run By default newly created programs are set to Active as soon as you assign the first start time to them To toggle a program between Active and Passive 1 Turn the dial to PROGRAM PAUSE AUTO RESUME STOP MA
24. 2 Example B 5 All parameters in use cccsssscceceessssecceceeeceesesseeeeeeees 82 N mbers 222g OSE e Raia e EEN EE 83 TADIEsEX PLAN at O a aa eae a ea a A ul 84 Example B 6 NO Min ET eorr nnani errare ia eler t a i ei 85 NUMBORS iriran riesen Ee EE E EE EEn eii 86 Table Explanati n una este ee sun alien 87 Example Bz NO MaX ET essen es 87 Numbers 22 23 er ne antag OE A REEN 88 EXPLANATION sss 2 Ran een ecechaes bes neue zene 89 Example B 8 No soil holding oo cece csesssceceeecsessesseceseeeceseaseeeeesees 90 N mbers 2ER duantecthavesescatseosstbavesdss 90 Example B 9 Max hourly rain 2222ccssseenensennnneenseennnnnnnnnennenennennnn 92 Options for Getting ET Data mareren rereana e E e E Eai eae EE 93 Using Historical ET Data cccccccccccccscseccccceseeeecceceesceeeseeeescceeeeeueeceessseaaeseeeeeea 94 Configuring for Historical ET Data cccccccssssseeeceesseecceeeeeeeeceeaeeeeeeeees 95 Appendix C Adding a flow sensor cccceseesssseseecseseeeeaeeecececsesseeesececesseaseeseesceesesaseeeesceeeaaeas 99 Alarm Types sera rss eo e nein aE TE 99 Setting Alarm Thresholds eesssnsseeeeesnnnnneeeennnnnnnnnnnnnnnsnnnnnennn nennen 100 Setting the alarm reaction delay ueesesssssneessssssnnennnseneennnnnnnnnennnnnennnn 100 LTD Installation and troubleshooting Setting the high flow threshold u cccccscccccccsesesccecseecceceeeeeeceeeeeeeeeeeees 102 Setting th
25. 2 0 00 0 32 0 51 No irrigation as no min ET 0 32 0 32 0 26 0 11 0 15 0 15 4 0 15 0 15 0 27 0 53 0 26 0 26 86 LTD User Manual 5 0 26 0 00 0 28 0 50 0 22 0 40 No irrigation as ET balance lt 0 Limited by soil holding 6 0 40 0 00 0 24 0 00 0 24 0 16 No irrigation as ET balance lt 0 7 0 16 0 00 0 29 0 00 0 29 0 13 No irrigation as ET balance lt 0 Table Explanation Date Explanation 7 1 4 The ET balance is set to ETc ET Rain As the ET balance is gt Min ET the program will run and use the entire ET balance 75 A lot of rain ETc becomes negative and so does the ET balance No irrigation 7 6 Another day with a lot of rain The ET balance would have been 0 48 if it wasn t limited by the soil holding of 0 40 7 7 Positive ETc and the ET balance increases but still no irrigation 7 8 Now we begin to irrigate again Example B 7 No Max ET Min ET Max ET Soil holding Max hourly rain 0 20 0 00 Infinite 0 40 0 10 The program is set to run one time every day i e it will if the ET balance is greater than Min ET The example starts with 0 20 ET no rain and an empty ET balance 87 LTD User Manual Daily irrigation m ET day m Rain day m ETc BET Balance W Irrigation Soil holding
26. ATE amp TIME o PROGRAM OFF o RAIN OFF RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS o J ADVANCED TWO WIRE SOLENOID AMPS SHORT FINDING 1p 00 p 15 e SETUP SENSORS e PROGRAMMING You will be prompted to enter the number of hours you wish to halt irrigation Use the item selectors to enter the number of hours and press the ENTER button to start the shutdown To end the shutdown push the CANCEL button 57 LTD User Manual 58 Chapter 5 Advanced Features Intelliset With the Intelliset feature set you can allow external evapotranspiration ET devices to control your irrigation Intelliset comes in a couple of flavors e Simple ET which allows a WR7 Receiver to tell the LTD if it should irrigate today or not e Complex ET control based on historical ET data you enter the historical ET correction figures for the entire year and use these to adjust your irrigation throughout the year You can also use the historical data as a fall back mechanism for a connected weather station e Complex ET control which allows the LTD to adjust the irrigation level based on ET data from a weather station exact amount of rain and environmental conditions e Complex ET control based on remote ET data received from a central ET server All methods ensure m
27. ETc 0 19 which is added to the ET balance As the ET balance is less than Min ET the program will not run 7B The ET balance will now be the sum of ETc for 7 2 and 7 3 i e 0 51 As this is above the Max ET the program will only apply 0 35 and the remaining 0 16 will be left in the ET balance 7 4 Just a normal day ET Rain from the past day is added to the ET balance and it irrigates 84 LTD User Manual Date Explanation 75 A lot of rain ETc becomes negative and so do the ET balance No irrigation 7 6 Another day with a lot of rain The ET balance would have been 0 48 if it wasn t limited by the soil holding of 0 40 7 7 8 Positive ETc and the ET balance increases but still no irrigation Example B 6 No Min ET Min ET Max ET Soil holding Max hourly rain 0 00 0 35 0 40 0 10 The program is set to run one time every day i e it will if the ET balance is greater than Min ET The example starts with 0 20 ET no rain and an empty ET balance 85 LTD User Manual Daily irrigation Max ET m ET day m Rain day m ETc E ET Balance B Irrigation Soil holding Numbers 12 01 24 Hour Cycle 11 59 PM AM Day Starting Irrig E T Rain Etc End balance atio balance n Past 0 20 0 00 0 20 0 20 1 0 20 0 20 0 29 0 10 0 19 0 19 2 0 19 0 00 0 3
28. FF C RUNTIME o PROGRAM S RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e J ADVANCED e TWO WIRE SOLENOID AMPS SHORT FINDING 13 00 p 45 e SETUP SENSORS e PROGRAMMING Now the display will look something like this 22 LTD User Manual Program 11 Total run time 0 00 00 Sta 0 SMTWTFSSMTWTFS 0 100 P 2 Usethe item selectors to navigate to the program you wish to adjust the start times for and turn the dial to the WATER DAYS position Program 1 Total run time 0 40 00 Select Water Day type TEven dates 3 Use the item selectors to choose between Odd dates Even dates or 14 day period and push the ENTER button If you select odd or even dates you are done now but if you select 14 day period you need to walk through the next steps as well 4 Assuming that today is a Sunday the list of days will start with an S and a cursor will be blinking ontop of the first S 23 LTD User Manual Selecting the water days Program 1 Total run time 0 40 00 Select water days SMTWTFSSMTWTFS 5 Now you can use the item selectors to navigate through the days The up and down arrows will toggle the selected day to On Off Here s how selecting only Mondays Wednesdays and Fridays would look like Program 1 Total run time 0 40 00 Select water days M W F M W F 6 Once hap
29. G 13 e0 p 5 e SETUP SENSORS J PROGRAMMING Now the display looks like this Advanced Setup 1 FloStack ES wm 2 Use the arrow keys to select Monitor Data and press the ENT button Now you see the following display te dete wk s Monitor Data 1 Enable Disable mon events 3 Select Enable Disable mon events 55 LTD User Manual Now you get a list of all the events that can trigger monitor data For each of these you can select them using the ENTER button and enable disable them Programs Stations Daily Water Usage Hourly Water Usage System Mode Change Alarms amp Rain Shutdown Installation Data Change Program Data Change Moisture Clock Changed Water Window Daily ET and Rain Daily Assigned Program ET Hourly Rain Finally you can configure how often the controller should poll the board for problems From the main Monitor Data menu select Board surv log interval and you will see the following display Board surv log interval Monthly Select your desired interval and press the ENTER button 56 LTD User Manual Rain Shutdown Despite all the features controlling irrigation in your LTD you still have a manual handle to pull if you want to halt irrigation immediately typically if heavy rain sets in To halt all irrigation immediately simply turn the dial to RAIN OFF PAUSE AUTO resume STOP MANUAL SET D
30. ISTURE SENSOR PROGRAM STATUS e U ADVANCED J TWO WIRE SOLENOID AMPS SHORT FINDING DECODER 8 SETUP SENSORS e PROGRAMMING Now the display looks like this Advanced Setup 1 FloStack 2 Use the item selectors to select 3 Intelliset and push the ENTER button Now you ll see the following screen 95 LTD User Manual lt ET y Moisture SER Select 1 ET Now the display will look like this sx Intell set 1 Current Accumulated ET and Rain Select 6 Device Setup Now the display will look like this er Device Serc p lt 1 ET Input Method Select 1 ET Input Method Now the display will look like this ET input Method Local Weather Station Select Historic and push the ENTER button Push the CANCEL button once to go back to the main Intelliset menu Select 5 Historic Data Settings in the menu and push the ENTER button Now you ll see the following screen 96 LTD User Manual re Historic Data Settings Month TJanuary Daily ET 0 00 9 Use the item selectors to browse the months and set the daily ET adjustment for each 10 Push the CANCEL button to return to the main Intelliset menu 97 LTD User Manual 98 Appendix C Adding a flow sensor The LTD can measure the flow of water in your system and react on any unusual situation by quarantining faulty
31. It can be turned off just like any other station For more information turn to Chapter 4 Running Extra Stations in Auto Mode on page 40 5 Push the ENTER button to save your selection Setting the master pump failure threshold 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 3 FloGuard and push the ENTER button Now you ll see this display 105 LTD User Manual FloGuard 277 Station Status 2 Choose 2 Alarm Thresholds and push the enter button Now you ll see the following display Alarm thresholds 1 Alarm Reaction Delay 3 Use the item selectors to select 5 Master Pump Failure Now you ll see the following display Master Pump Failure Master Pump Failure limit OOOOGPM 4 Use the item selectors to set the minimum flow that must be in your pipe if the master pump is working correctly You can decide whether this alarm should result in all programs to be halted or all pumps and master valves should be turned off For more information turn to Appendix C Setting Alarm Actions on page 107 The action you choose will be in effect until the next station gets activated manually or by a program 5 Push the ENTER button to save your selection 106 LTD User Manual Setting Alarm Actions The only flow alarm for which you can decide the action is the master pump failure alarm you get to decide whether this should cause
32. NUAL SET DATE amp TIME o PROGRAM 9 OFF o RAIN OFF C RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS d U ADVANCED J TWO WIRE SOLENOID AMPS SHORT FINDING 1p 00 p 453 e SETUP SENSORS PROGRAMMING Now the LTD shows you the configuration for Program 1 The first time you do this most settings are blank and the display will look like this 17 LTD User Manual Program Name Water days Total run time Active Passive selector Program 1 Total run time 0 00 00 Sta 0 SMTWTFSSMTWTFS 0 100 P Number of Number of run First start time Water budget stations in times program The following sections walk you through everything you need to know in order to customize the 10 programs Configuring the stations Each ofthe 10 programs can activate up to 50 stations in turn The stations are run in turn according to their IDs starting from STO1 STO2 etc To configure a program simply set the run times of each station to the number of minutes you wish it to run Here s an example of an irrigation program Station Run Time ST01 10 min STO2 5 min ST04 50 min 1 1lf you want the stations to run in a different order than this you must assign se quence numbers to each station and the sequence number will determine the order instead 18 LTD User Manual
33. NUAL SET DATE amp TIME OFF e o Z PROGRAM RAIN OFF RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEWET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e e SETUP SENSORS e J ADVANCED TWO WIRE SOLENOID AMPS DECODER SHORT FINDING PROGRAMMING 32 LTD User Manual Now the display will look something like this Program 11 Total run time 0 00 00 Sta 0 SMTWTFSSMTWTFS 0 100 P 2 Use the item selectors to select the program you wish to toggle active or passive and turn the dial to the PROGRAM STATUS position Program 1 Total run time 0 40 00 Set program Passive 3 Use the item selectors to toggle between Active and Passive mode and push the ACTIVE PASSIVE to save your selection and exit to the main display for Program mode Adding a Booster Pump The LTD lets you configure a station to activate a booster pump Here s how you assign a booster pump to a program 1 Turn the dial to ADVANCED 33 LTD User Manual PAUSE AUTO resume STOP MANUAL SET DATE amp TIME OFF e gt e Z PROGRAM RAIN OFF RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS J U ADVANCED TWO WIRE SHORT FINDING e SETUP SENSORS e SOLENOID AMPS 13 00 p 454 PROGRAMMING Now the display looks
34. PS DECODER PROGRAMMING Now the display looks like this Advanced Setup 1 FloStack 2 Use the item selectors to select 3 Intelliset and push the ENTER button Now you ll see the following screen 119 LTD User Manual ce ET JY Moisture 3 Select 2 Moisture and push the ENTER button Now the display looks like this Moisture 1 Moisture Program Settings 4 Select the first option 1 Moisture program settings and push the ENTER button Now the display looks like this Pgm Sens Allow Prevent Alarm Ctrl Reg eee 1 15 25 4 No 0 5 Now using the item selectors set the values for all seven columns Column Description Pgm The program to assign a moisture sensor to Sens Which sensor to assign Allow The lower threshold for when irrigation will be allowed e g 5 means that irrigation will be allowed as long as the moisture readings are below 5 Prevent The higher threshold for when irrigation will be prevented e g 30 means that irrigation will be prevented if the moisture readings are 30 or higher 120 LTD User Manual Column Description Alarm The lower threshold for when an alarm will be raised Ctrl Set to Yes or No depending on whether you want the moisture sensors to control your Irrigation If irrigation is prevented due to high moisture readings ET for the following day will be increased R
35. TUCOR IRRIGATION CONTROLLERS LTD USER MANUAL MANUAL OFF RAINOFF RAIN ALARM STATUS VIEW ALARMS VIEWET amp RAIN stune sensor D SETUP SENSORS SOLENOID AMPS DECODER SET DATE amp TIME PROGRAM RUNTIME WATER DAYS STARTTIME WATER Bu PROGRAM STATUS ADVANCED Two WIRE SHORT FINDING PROGRAMMING Copyright August 2015 All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior permission of the publisher Address Tucor Inc 518 Wallace Rd Wexford PA 15090 8642 Phone 800 272 7472 724 935 6850 Fax 724 935 8233 Email tucormail tucor com 450 230 0009 A LTD User manual Content Chapter 1 Introducing LTD eisenii aceae naenin a erani a aE a ea Eua aE rE Ea 7 The Controller rasen anna anna aan ana sa nn nnd 7 Irrigation Features ansehen nennen 7 Chapter 2 Operating the CONtrOMEL ccccssssecececcecsesesesecececsesesasseeececeessaeseeseeeseeeaeseeseeses 9 The Bisplay u mai een lehnen arena 9 A standard display when idling in Auto mode unnenennn 10 Button nd Controls iseeneses breiddinni eiei iese 11 The Seven Main Modes sesssssssssssssrssssssssererererrrerrrrrrrsssrssseereereereesssees 11 OFF Red cecceseesescecescesvscescessecsceceevsceeceasessesaceevacucers
36. ail address using the up down arrow keys to select the characters Once you are done press the ENTER button 4 Next you configure which alarms should be emailed Select Alarm Notification settings and press the ENTER button Now you see the following display Alarm Notification settings TRain Here you can scroll between the different alarms emitted by the controller 5 Select the alarm you wish to configure and press the enter button Now you see the following display Rain E Mail Tyour email com You can select each email address you have entered and determine if you want an email when this type of alarm is raised and or when it is recalled 48 LTD User Manual 6 Select the email you wish to configure for the current alarm and press the ENTER button Use the arrow keys to set On and Off to either Yes or No see the explanation table below Setting Selection Meaning u Yes Send email when the alarm is raised No No email when the alarm is raised ou Yes Send email when the alarm is recalled No No email when the alarm is recalled Viewing the alarm list To view the list of alarms in the LTD follow this procedure 1 Turn the dial to the VIEW ALARMS position Now you ll see a scrollable list of the different types of alarms known to the LTD Alarm On Date Time Off Date Time 1 Rain o 12 05 01 10 P In this case there is no Off time for
37. ain day mETm WET Balance Irrigation E Soil moisture In this case the soil moisture was in balance when we started and it is kept in balance 127 LTD User Manual Field capacity Permanent wilting point MET day E Rain day mETm WET Balance Irrigation E Soil moisture The regulation has very little influence as the soil moisture is in balance and we just deviate slightly from the nominal value 128 LTD User Manual Field capacity Permanent wilting u m ET day 7 1 7 2 7 3 7 12 7 8 7 14 7 15 5 Rain day E ETM WET Balance Irrigation E Soil moisture Same as with 50 Example D 3 Wet start condition field capacity Soil moisture starts at 1 44 129 LTD User Manual Loam Wet soil 0 regulation N H Field capacity 1 00 Optimal 0 50 Permanent wilting point MET day B Rain day E ETM B ET Balance Irrigation E Soil moisture 0 50 L We start with 0 20 ET and no rain the first day The soil is wet but we have no regulatio
38. all programs to be halted or all pumps and master valves to be shut down Configuring alarm action for MPF 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 3 FloGuard and push the ENTER button Now you ll see this display FloGuard 1 Station Status 2 Choose 3 Action Configuration Now you ll see the following display wee MPF action selection Upon MPF alarm shutdown all TPumps MVs 3 Use the item selectors to choose between e Pumps MVs All pumps and master valves will be shut down when an alarm goes off The programs will still be finished even if the pumps are turned off in order not to interrupt the irrigation schedule since an MPF alarm will be cleared next time a program has to start e Programs All running programs will be shut down when an alarm goes off 4 Push the ENTER button to save your selection 107 LTD User Manual Setting Expected Station Flow In order to be able to calculate when the current flow is deviating from the expected flow the LTD needs to know how much flow you expect each station to pull To teach the controller about the expected flow you can either enter a value for each station or run the automated learn flow feature that will assess the flow for each station in turn Entering expected flow for a station 1 Turn the dial to ADVANCED and select 2 FloStack Now you ll see the following dis
39. ancep use the item selectors to scroll to item number 6 Station Run Sequence amp Mapping and push the ENTER button Now you will see this display 2 Select2 Station Output Mapping and press the ENTER button Now the display will look like this 141 LTD User Manual ER Stacia OUTDUE Mapping exx fee Edit 3 Select2 Reset to factory default Now you will see the following display This will reset all outputs to match sta tion ids Are you sure 4 Push the ENTER button to acknowledge that you are resetting all mappings or CANCEL to exit 142 Appendix F Using Simple Flow Management The LTD allows for simple flow management by comparing the current flow to system capacity and preventing too many stations from running at once Configuring for Flow Management Setting up your system for flow management only involves two things 1 Defining the expected flow for your stations For more information turn to Appendix C Setting Expected Station Flow on page 108 2 Set the maximum system capacity For more information turn to Appendix F Setting the System Flow Capacity on page 144 How the Flow Management Works Whenever a station is about to start the LTD will try to determine whether the system has sufficient capacity to start the station by doing a little calculation A station can be started if Required Capacity Capacity in Use lt Total Capacity
40. avsesautevseeeveasaceess 12 MANUAL Brown cccccceccessceccecesseccecesvecceceececceececacevevaceevaesaceuvavseeasersas 12 AU MONG HCY ee ee ee sn tieeiedesosadniueteteeeee sees 12 PROGRAM Light blue c ccccccsccssssecessessscessesescsceeccaseevcevsceevacsaceuvevsavaceeeas 12 SETUP Dark DIWG ana a 13 ADVANCED Black cceccecesssceccesessscescessscsecescevsccesvsceuceevaceusauvevaeeevaceaceess 13 SOLENOID AMPS Light green ccccccccccccccccceceecesssssesccececeeeeseeeeeeens 13 Chapter 3 Programming the LTD een 15 Basic Controller Configuration ccccccccccessseecccceeeeeceeeseeeeesseeeseesessaenees 15 Setting the date and time u ecccccccceecccccssssscccceecesceeseeeecccesseneeeceeeseeseeeeees 15 Configuring Irrigation Programs cccccccssseccceceeseeceeeeeceeeeueeeeceeeeeseeeeees 16 Configuring the st tions cisssssceccisecsaccadsssesceseawessease ee 18 Configuring a station in a program ueesseseneesennnnnneeennnnnennnnnnnnnnnnnennnnnennnnnnnnnnn 19 Setting Water Days usa annehmen EEES 22 Selecting the water Gays ueeessesenneenasssnnnennnnnnnenennnnnnnnnnnnnnnnnnnnnnennennnnnnenn 24 setting Start Times un een 24 Adjusting Water Usage Water Budget or ET uueeeessesesscnenenneneneneneneenennnn 27 Adjusting the ET Water budget cccccccccccecssssesssesseseescceeceeeeeeeeeeeeees 30 Activating deactivating a Program cccsssscsssssecceeeceeeessseessssee
41. d during the day the ET dries out the soil The example shows that most of the days the soil moisture is below the permanent wilting point at the end of the day 124 LTD User Manual Loam Dry soil 50 regulation Field capacity Optimum Permanent wilting point m ET day B Rain day B ETM B ET Balance Irrigation E Soil moisture We start with 0 20 ET and no rain the first day The soil is dry and we have 50 regulation Thus the ETm will be regulated up by 50 from the collected ET in the beginning and as the soil moisture reaches the nominal level the ETm is regulated less The trend shows the soil moisture is growing until it reaches the optimum level 125 LTD User Manual rai Loam Dry soil 100 regulatio Field capacity Optimal Permanent wilting point MET day Rain day mETm E ET Balance Irrigation E Soil moisture This shows the same tendency as the 50 regulation just that the regulation of the soil moisture is far more aggressive Example D 2 Optimal start condition Soil moisture starts at 0 84 126 LTD User Manual Field capacity Optimal Permanent TI wilting i point MET day m R
42. e Flow Deviation uueesseseseeeensnensnnnennsnnnnnnnnnnnnnnnsnnnnnennn nennen 103 Setting the unscheduled flow threshold cccccccssseceeeeeeeceeeeeeeeeeeees 104 Setting the master pump failure threshold cccccccccesssseeececeeeeeeeeeees 105 Setting Alarm Actions ccccccssssscccccsssseceeccesseeccsseeceesesssecesecesseseeses 107 Configuring alarm action for MPF ceeeseesssneeeeeennennnnnnnnnnennnnnnnnneennnn 107 Setting Expected Station Flow ueeeeeeeeeesssssssennnnnnnnnnnnnnnennnnnnnnnnennnnnnenn 108 Entering expected flow for a station uuueeeessessneennnnnneeennnnnnnnnnnnnnnnnnnn 108 Running the learn flow feature sorores en EE RRE 109 Viewing the Current Flow eeeeeeesssssssneesnnnnnenennnnennnnnnnnnnnennnnnnnnennsnnnnnnnnnnnn 110 Inspecting and Toggling Station Status ccccccsesecccceseecceeeseeeeceeeseeeeeseees 112 Managing station Status eeeeeseeseesnennenennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnssnsnsnnnnnn 112 Appendix D Moisture sensors en a a e e A aa a aa A a Ea aa a iaa e aariaa 115 The Role of Moisture Sensors 22ussssssnnennnenessnennnnennnenennnnnnnnnnnnnnnnn nennen 115 Callulate 3 es iknehraksinleRilesasts 116 COMMUNICATE 2 a T a Darin kai 117 Validate unstsiiienansbeisetsshkeniblilabentlshehsusiusallae 117 How irrigation is adjusted by moisture Sensors eeeeceeeneeeeennnnnnnnenennennnnnn 118 How moisture sensor input affects ET eeennceee
43. e LTD lets you go beyond regular irrigation and build misting and Cycle amp Soak programs How is This Different from Regular Programs Misting and Cycle amp Soak programs are configured the same way as regular programs see Chapter 3 Configuring Irrigation Programs on page 16 for a walk through except for one point The program start times have a more elaborate configuration In addition to start time you configure an end time and a cycle count for how often you want the program repeated within this time frame The controller will then even out the repeats within your time frame leaving identical breaks between them So if the total run time for your program is ten minutes and you configure the program to run three times between 10 00 AM and 11 00 AM your program will run at 10 00 10 25 and 10 50 leaving 15 minute breaks at 10 10 and 10 35 LTD User Manual The terms Misting and Cycle amp Soak refer to two variants of this concept e Misting typically describes a program that runs its stations for a very short time run times are in seconds e Cycle amp Soak typically describes a program that uses longer run times measured in minutes Both will run a number of cycles per start whereas a normal program will only run once per start When the LTD Alters Your Program There are a number of scenarios where the LTD will reduce the number of repeats in a program start Program was paused If a
44. e from the controller will vary depending on the status of the program and the number of programs running If the program you select is the only one running you ll see this display To ause Program 1 Press Program If the program you select is one of several running programs you ll see this display Pause All Use Pause To ause Program 2 Press Program If the program you select is not running but other programs are you ll see this display Pause All Use Pause Progran 2 is neither Paused nor Running 2 Push the button that suits your intentions PAUSE RESUME or PROGRAM and the controller will pause the program s and return to the list of programs Prog 13 PAUSED Station ST2 09 04 PM Remain 0 01 52 Remain 0 00 30 OGPM 39 LTD User Manual Once you re ready to resume the program follow this procedure Resuming a paused program 1 Use the item selectors to locate the program you wish to resume and push the PAUSE RESUME button Depending on whether one or more programs are paused you ll see different displays according to what you did when you paused the program s 2 Push the button you need according to the instructions in the display 3 When the program s resume s the display will look as if the program s had just kept running Running Extra Stations in Auto Mode When the LTD is running in auto mode you have the option of manually starting additional station
45. e raised and many will lead to your irrigation schedules being adjusted to the new conditions For example if it rains heavily the LTD won t blindly keep irrigating as you may have told it to The LTD logs everything elaborately and even lets you view real time data in the web based interface With this knowledge you can re adjust your calculation but still an important piece is missing from the puzzle Validate To validate your calculations and the feedback the system has given you there is no way around measuring the exact levels of moisture in the ground By adding moisture sensors to the LTD you are now full circle Irrigation can now be adjusted automatically based on the data flowing from your moisture sensors and long term you can adjust your schedules according to what you learn from the full circle irrigation scheme gradually refining your irrigation schedules to perfection LTD User Manual When setting up moisture sensors with the LTD you tell the controller which soil type you are measuring and then the LTD will pull in data every 10 minutes and you are allowed to configure precisely how the controller should react to this data this happens as fine grained as on a per program basis e Set limits for how dry the soil should be before irrigating and how moist it must be before irrigation is prevented e Determine whether or not the collected data should affect current irrigation directly or if the data shou
46. eeceeeeeeeeens 32 Adding a Booster Pump ccccsssssececcssesssceeecsaseeesssseeeeeeenseeseeeeesseeeeees 33 LTD Installation and troubleshooting Adding a Master Valve Supply Pump cccccccccccceeeeeeeeeeeseesesen cess 35 Testing a Program seele en anal veben a ae ara 35 Chapter 4 Running the LEID 2238 22 N ER3ER oem laste ts a Ta 37 Running LTD in Auto Mode uuuussssssseesnnnnnneennnnnnnnennnnnnnnenennnnnnnennnnn 37 Pausing a Running Program cccecccceccccseecccesceeseeceeeeeceeeecesseeeeeeesessueees 38 Resuming a paused program eeenseeeeeeesnnnnnneennnnnnnnnnnnnnnennnnnnnnnnnennnnnnnen nenn 40 Running Extra Stations in Auto Mode uunneseeessennsseneessnnnnnneeennnnnnnennn nn 40 Running a station manually uueesssssseeeesnnnnneennnnsnnnneennnnnnnnenenennnnnnnnnenn 41 Running Extra Programs in Auto Mode ccccsseeseecceeeeseececeeeescceeseaaeeees 42 Running LTD in Manual Mode ccccccessseececeeeseeecceeeeeeeeeeseeaeeeseeseeeeeees 43 Alarms usa RnB od eee eb ins 45 Becoming aware of alarms on site ccccseeeccccceeeeceeeeeseeeeesaeeeeseeseeaenees 45 Receiving alarm notifications on email ussssssssseeeeennnneeeennnnnnenenn ees 46 Viewing the alarm list cccccccccccseccccceseeeeeceeeeeceeeeseeeesceeeeeeeeeeeseeeeeeeeeeea 49 Alarms inthe LTD essen 50 Monitor Data ccc ai cede etna nck ea ee eek 54 Rain SshutdowN 23er
47. eesennsnnsennsnnnnnnnenennnnnnnnn 121 Abbreviations 2 a8 2er 122 VSM ranges for the different soil types ccsssenenesenssnnnneenennnnennnnnn 122 Example D 1 Dry start condition stress point 124 Example D 2 Optimal start condition uueseesceseseeneneenssenennenennnnnn 126 Example D 3 Wet start condition field capacity 129 Appendix E Changing Station Run Sequence and Mapping cccccccsssscccecsesssseeeeeeessenees 137 Example E 1 Putting a new station in the middle of the run chain 137 Changing the station run sequence cesesecceseesesescaeeeeeeeceestaaees 138 Resetting station run SEQUENCES ceeeeeeeesnssesnnnnnnnnnnnnnnnnnnnnnnnnnnnnssnnnsnnnnnn 139 Changing Station Output Mapping ueeeeessneneeeensnnnnsnnnnnnnnnnnnnnnnnnnnnnnnnnn 140 LTD Installation and troubleshooting Changing Station Output Mapping ccccccecccccesssseceeeeeeeeesesseaees 140 Resetting Station Output Mapping rererereneneneneneneneneeennnennnenennnnnn 141 Appendix F Using Simple Flow Management uusssessssssensnsnnnenonnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnn 143 Configuring for Flow Management ccccccccssssssecccceeeccceeseeeeceeessseaeseeeeeeees 143 How the Flow Management Works eeseeeeseesssssssensnnnnnennnnnnnnnnnnnnnnnnnn anne 143 Setting the System Flow Capacity ceeeesesncsseeeennnssneennnnnnnnnennnnnnnnnnensnnnnnnennnenn 144 Appendix G
48. eg A percentage with which the ET will be adjusted 0 means no adjustment and 100 means that the ET will be as much as doubled for the following day 6 Push the enter button to save your configuration 7 Repeat steps four and five for each program you wish to assign a moisture sensor to Once you have completed all the procedures in this section your system should be up and running utilizing moisture sensor readings and adjusting irrigation accordingly How moisture sensor input affects ET The LTD can handle single moisture sensor via the external RS232 port and an additional external RS232 RS485 SMI 100 converter The controller can handle up to 10 moisture sensors on a multi drop line The moisture sensor is able to allow or prevent irrigation and or adjust ET on specific programs dependent on the actual moisture and the setup All the setup can be done at the controller and on the WEB It is also possible to view the actual moisture level both on the controller and on the WEB The moisture sensors may be set up to simply allow or prevent irrigation The irrigation is still controlled by water days WB or ET start times etc The sensor just acts as a switch for one or more programs 121 LTD User Manual More powerfully the moisture sensor is also able to adjust the daily ET which is added to the ET balance corrected for rain for each program The principle is that high moisture shall reduce the ET applied t
49. elect 2 FloStack Now you ll see the following display FloStack 1 System Flow Capacity 2 Select1 System Flow Capacity and you ll see this display 144 LTD User Manual System Flow Capacity 0000 GPM 3 Use the item selectors to set the system flow capacity and push the ENTER button to save your setting Important Leaving the System Flow Capacity at zero GPM means that the setting won t be used to correct which stations are started 145 LTD User Manual 146 Appendix G Defining a custom irrigation period You can change the standard irrigation window in the LTD that runs from 12 00 AM to 12 00 AM This has two effects 1 The entire water cycle will start when your irrigation period starts If this is different from 12 00 AM please be aware that e Programs will start running on the first start time after your irrigation period starts This can potentially lead to a bit of confusion where programs leap into days you wouldn t think they should be running or start running before they normally would Example G 1 Skewed days with custom irrigation periods Consider a program with four start times 02 00 AM 05 00 AM 06 00 PM and 11 00 PM that runs on odd days If your irrigation period starts at 08 00 PM and runs to 08 00 PM here s how the program could run LTD User Manual Date Start time Action September 2 11 00 PM Runs de
50. example we assume the following circumstances for the program in question e Today s ET budget has been adjusted to 0 4 e The program has four start times e The minimum ET value has been set to 0 2 because irrigating less than this gives you an uneven irrigation and has little effect on the 81 LTD User Manual turf Each of the four start times can irrigate one fourth of the total ET budget meaning 0 1 Here s how each of the four start times will take place Start time Action Explanation 1 No irrigation The budget is 0 4 and there are four starts left meaning that each must provide 0 4 4 0 1 which is below the 0 2 minimum No irrigation The budget is 0 4 and there are three starts left meaning that each must provide 0 43 0 13 which is below the 0 2 minimum Irrigation The budget is 0 4 and there are two starts left meaning that each must provide 0 4 2 0 2 which equals the 0 2 minimum Now the 0 2 that the program provided is subtracted from the budget so the budget is now 0 2 Irrigation The budget is 0 2 and there is one start left that must provide 0 2 1 0 2 which equals the 0 2 minimum Now the ET minimum value has ensured that we got two useful irrigations instead of four uneven irrigations Examples The following examples show a week with ET Rain ET balance and irrigation with various combinations of ET parameters Examp
51. for the next program to run LTD User Manual A standard display when idling in Auto mode Program 1 Start Tue 09 44 PM 08 40 PM Total Stations 2 Total run 0 40 00 This simply states that the next program to run is program number one the program s total run time is 40 minutes and it will run on Tuesday at 09 44 PM activating two stations in turn In the top right you see the current time You will learn all about programs in For more information turn to Chapter 3 Configuring Irrigation Programs on page 18 10 LTD User Manual Button and Controls LTD PAUSE AUTO resume STOP MANUAL SET DATE amp TIME OFF ee PROGRAM STATION RAINOFF RUNTIME RAIN ALARM STATUS WATER DAYS e PROGRAM e VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS SETUP SENSORS o 9 e ADVANCED TWO WIRE TWO WIRE TW CO R SO_ENOID AMPS SHORT FINDING STATUS IN Cc DECODER U PROGRAMMING pW Jog wheel Item selector The LTD is handled by the dial and item selectors in conjunction Select the mode using the dial scroll through dialogs using the item selectors and confirm or cancel your selections using the YES and CANCEL buttons The Seven Main Modes The LTD works in seven different modes each allowing you to handle a subset of the controller functionality Each main mode has its own color on the front plate provided
52. he soil is only capable of holding 0 5 we can not benefit from all of the rain but only 0 5 of the 0 6 Conclusion tomorrow s ET budget will be adjusted with 0 5 meaning that we will not need to irrigate at all Unless of course the ET budget is still positive after adjusting with 0 5 In other words we can never benefit more from fallen rain than the soil is capable of holding back So this example will end up with a 0 5 adjustment no matter how much more rain we have had e If you don t connect a weather station but let your programs run from historical ET data the controller simply reads the historical data each midnight subtracts the rain figure and adds the result to the ET budget 79 LTD User Manual A bit of background is needed to understand how this works When the controller is irrigating normally it is considered to be irrigating at a water budget of 100 For more information turn to Chapter 3 Adjusting Water Usage Water Budget or ET on page 31 In order for the ET figure to make sense to the controller you need to tell it what the ET figure would be when running at a 100 water budget So if the ET Base setting Tis 0 20 and today s ET budget says 0 10 the controller will run at a water budget of 50 percent meaning that programs will only run 50 percent of their configured run time The tricky part is to make your irrigation programs fit into this model If the ET Base setting is 0 20
53. he water budget doesn t control the water flow as such but instead it determines the run time 27 LTD User Manual This means that if you have set up a program to run five stations for 10 minutes each this is what will happen with the water budget set to 100 percent But if you decrease the water budget to 80 percent each station will only run eight minutes and if you set the water budget to 120 percent each station will run for 12 minutes e Letting ET adjustment decide how the irrigation should be carried out This way you tell the LTD how much water you want the program to provide per day and then the controller will adjust for any ET and Rain input it receives For more information turn to Appendix B Adding an ET Device on page 87 The following two procedures walk you through configuring a program for each of the two options 1 Turn the dial to PROGRAM PAUSE AUTO RESUME STOP MANUAL SET DATE amp TIME F OFF RAIN OFF RUNTIME o PROGRAM S RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e J ADVANCED TWO WIRE SHORT FINDING e SETUP SENSORS e SOLENOID AMPS 13 00 p 45 PROGRAMMING Now the display will look something like this 28 LTD User Manual Program 1 Total run time 0 40 00 1 Start 12 00 AM 2 Usethe item selectors to navigate to the program y
54. ing an ET controlled program No adjustments are made to the number of cycles The fact that ET may decrease the run time of your cycles you may still be able to fit in your number of cycles even though you lower the end time Set the end time to 09 00 and push the Enter button to save your settings now the cycles will be evenly spread out in the hour between 08 00 and 09 00 Pam T 1 SOAK Cycle 1 4 08 01 PM Remain 0 14 00 End 09 00 PM OGPM 157 LTD User Manual Things to Keep in Mind When using misting or cycle amp soak programs there are a number of things to consider that don t apply to regular programs If you re using ET Each cycle still obeys the water budget dictated by ET This means that each cycle might have to run for so long that the time frame for the start time doesn t have enough room to fit in all the cycles In this case the number of cycles is cut down adequately The cut out irrigation is added to tomorrow s ET figure If you re using a maximum system capacity For more information turn to Appendix F Using Simple Flow Management on page 159 a cycle might be unable to run if the maximum capacity is reached If the program is ET controlled the cut out irrigation is added to tomorrow s ET figure If you pause a misting program the cycles that should have taken place during the pause are dropped in order to fit the total number of cycles in the program run time window If the progra
55. inutes but the extended rain shutdown on top of that varies depending on the parameters In this case the factor is one so 60 minutes rain alarm gives an extension with one hour rain shutdown Note that the first 45 minutes don t have extensions due to the Rain Min Duration Example A 5 Rain min duration Adjust factor Max shutdown 45 minutes 5 999 hours 72 LTD User Manual Rain shutdown Rain shutdown m Alarm Rain alarm extended rain shutdown in hours 0 120 180 Rain alarm in minutes 0 0 2 8 In this example the adjust factor extend each rain alarm hour with 5 hours rain shut down So 6 hours rain alarm with prevent irrigation for 6 30 36 hours Example A 6 Rain min duration Adjust factor Max shutdown 45 minutes 0 5 999 hours 73 LTD User Manual Rain shutdown Rain alarm extended rain shutdown in hours E Rain shutdown m Alarm 120 180 240 300 360 Rain alarm in minutes In this example the factor is 0 5 and thus the rain shutdown extension is only half of the rain alarm Example A 7 Rain min duration Adjust factor Max shutdown 45 minutes 5 20 hours 74 LTD User Manual Rain alarm extended rain shutdown in hours Rain shutdown 40 35 30 25 20 Rain shutdown m Alarm 15 10 0 Rain alar
56. irst thing you have to do to get going is to set the date and time Setting the date and time 1 Turn the dialto the SET DATE amp TIME position PAUSE AUTO Resume STOP MANUAL SET DATE amp TIME F o PROGRAM ie e RAIN OFF C RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e J ADVANCED e TWO WIRE SOLENOID AMPS SHORT FINDING 1p 00 p 53 e SETUP SENSORS e PROGRAMMING LTD User Manual Now the display looks something like this 10 18 2004 08 50 42 AM Week day Monday 2 You change the settings with the up and down item selectors and move between the day month and year slots with the left and right item selectors Push the ENTER button to save your setting now the controller will save the date Configuring Irrigation Programs The LTD holds 10 programs that can each activate 50 stations in turn Each program can run 12 times a day on odd even or selected days in a two week period Additionally each program can activate a booster pump and a master valve throughout the duration of the program There is also a test program which can not be modified This program is primarily used to troubleshoot the system To start configuring a program turn the dial to PROGRAM 16 LTD User Manual Turn to PROGRAM mode PAUSE AUO RESUME STOP MA
57. ks and will be rounded up to the nearest block For instance run times of 00 04 14 and 00 04 18 will both be rounded to 0 04 20 Run time shorter than four minutes are not rounded The maximum run time is 17 59 50 You can delete a station from a program by simply setting the run time to 0 Use the item selectors to select the number of minutes you wish the station to run and push the ENTER button to save your setting Now the controller returns to the main screen for editing the run time Say you just set station number five to run five minutes in program two the display will look like this Program 2 Total run time 0 05 00 Select station f STS Run time 00 05 00 21 LTD User Manual Pushing the CANCEL button when adjusting the run time will discard the new run time and keep the original one even if this is zero Now you can select other stations and repeat steps four and five to determine how they should run in this program Setting Water Days There are three ways to determine which days a program will run e On all odd dates 1 3 5 etc e On all even dates 2 4 6 etc e On selected days in a 14 day cycle You select the days and the LTD will loop through the 14 day schedule To make the configuration as intuitive as possible the 14 day period always starts with the current day 1 Turn the dial to procram PAUSE AUTO RESUME STOP MANUAL SET DATE amp TIME F OFF RAIN O
58. ld just be collected for schedule refinement later on The moisture sensors also work in conjunction with the regular ET mechanism and affects the amount of water assigned to irrigation moving forward The range of ET adjustment can be from zero to two times the daily ET meaning that a very dry soil can result in ET being doubled and a very moist soil can bring the ET for the following day to zero You determine per program how much the controller can adjust the ET by setting a value between 0 and 100 a 100 being double from normal ET For more information turn to Appendix D How irrigation is adjusted by moisture sensors on page 118 How irrigation is adjusted by moisture sensors Each program can accept input from a moisture sensor and its input can be used for the following e Allow irrigation if the moisture level is low enough e Raise an alarm if the moisture level is too low e Prevent irrigation if the moisture level is too high e Optionally adjust the ET balance 118 LTD User Manual Here is how you configure your programs to use a moisture sensor 1 Turn the dial to ADVANCED PAUSE AUTO RESUME STOP MANUAL SET DATE amp TIME OFF e RAIN OFF e RUNTIME bd PROGRAM e RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR e e PROGRAM STATUS w e ADVANCED TWO WIRE SHORT FINDING e SETUP SENSORS e SOLENOID AM
59. le one or more programs are running up to a total of 12 simultaneously running valves A master valve can be selected that will open when any program or station is run You typically assign master valve status to the valve controlling access to municipal water or pumping station Up to 10 moisture sensors that can monitor soil moisture and adjust irrigation accordingly Chapter 2 Operating the controller It is essential that you feel comfortable with the interface of the LTD before you start configuring stations irrigation programs etc This section explains what all the controls are for in the different modes For more information turn to Chapter 3 Programming the LTD on page 15 and Running the LTD on page 37 LTD PAUSE AUTO resume STOP MANUAL SET DATE amp TIME OFF PROGRAM STATION e PROGRAM e e RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e bd ADVANCED e SETUP SENSORS e Tl CO R SOLENOID AMPS Sey nine EHE Yu Cc DECODER e e PROGRAMMING The Display The LTD has a back lit LCD display with two rows of 40 characters Since the limit is 40 characters per row sometimes words are abbreviated but all messages should still be easy to understand if in doubt about a message consult this manual A typical message is the following that is displayed when the LTD is idle waiting
60. le B 5 All parameters in use Min ET Max ET Soil holding Max hourly rain 0 20 0 35 0 40 0 10 82 LTD User Manual The program is set to run one time every day i e it will if ET balance is greater than Min ET The example starts with 0 20 ET no rain and an empty ET balance Daily irrigation Max ET Ht 772 773 7 4 Ff 778 E ETc 0 40 Soil holding Numbers 12 01 24 Hour Cycle 11 59 PM AM Day Starting Irrig E T Rain Etc End balance atio balance n Past 0 20 0 00 0 20 0 20 This is what we have when day 1 starts 83 LTD User Manual 1 0 20 0 20 0 29 0 10 0 19 0 19 Irrigate ETc from last day 2 0 19 0 00 0 32 0 00 0 32 0 51 No irrigation as ET balance lt Min ET 0 20 3 0 51 0 35 0 26 0 11 0 15 0 31 Irrigate for the last two days but only Max ET 0 35 4 0 31 0 31 0 27 0 53 0 26 0 26 Irrigation during night Rain comes during the day 5 0 26 0 00 0 28 0 50 0 22 0 40 No irrigation as ET balance lt 0 6 0 40 0 00 0 24 0 00 0 24 0 16 No irrigation as ET balance lt 0 7 0 19 0 00 0 29 0 00 0 29 0 13 Table Explanation Date Explanation 7 1 The ET balance is set to ETc ET Rain As the ET balance gt Min ET the program will run and use the entire ET balance 7 2 The
61. like this Advanced Setup 1 FloStack 2 Select 6 Booster to Program Assignment and push the ENTER button 3 Usethe item selectors to select one of the 10 programs and push the ENTER button 4 Nowuse the item selectors to select between Non BO1 or BO2 Program Booster 4 TBO1 5 Once done push the ENTER button to save the setting 34 LTD User Manual 6 Now you can repeat steps three and four for to assign booster pumps to more programs or push the CANCEL button to return to the main display for Advanced mode Adding a Master Valve Supply Pump You might want to have the LTD control the opening of your supply pump when irrigation is active and shut it down when irrigation is over Testing a Program After setting up your programs you might want to test them without having to wait around for all of them to actually run Since this is the same approach as you would take in a troubleshooting scenario please refer to the separate User manual manual 35 LTD User Manual 36 Chapter 4 Running the LTD Day to day usage of the LTD is pretty simple the whole point of having a system like this is to automate the irrigation so little or no intervention will be needed once your system is up and running Running LTD in Auto Mode Once your system is configured turn the dial to the AUTO position PAUSE AULO RESUME STOP MANUAL SET DATE amp TIME
62. ller can learn the exact moisture levels in the soil and adjust irrigation based on this knowledge The Role of Moisture Sensors Adding moisture sensors to your LTD takes the guesswork out of irrigation and adds a new level of intelligence to the picture you now enjoy Total Cycle Management 1 Calculate your irrigation run times based on local ET and Rain 2 Communicate get runtimes and system status via the Internet 3 Validate runtime scheduling based on feedback from the soil LTD User Manual Let s examine the three components of Total Cycle Management in turn Calculate When planning irrigation you look at the best evapotranspirational ET data you have available In descending order of accuracy you may have access to one or more of the following e Data from a local weather station e Real time ET data from an off site weather station e Daily weather reports from an off site weather station 116 LTD User Manual e Historical weather data for your area In addition you know about the soil type vegetation and other factors that should affect your irrigation planning but even the best planning is still in essence guesswork as you don t know for sure how the soil is responding Communicate With an intelligent irrigation controller like the LTD you get a lot of help in correcting your calculations along the way A variety of alarms For more information turn to Chapter 4 Alarms on page 45 can b
63. m in minutes This example has the same factor as example 2 but the max shutdown limits the rain shutdown extension in the case of long rain alarm periods 75 LTD User Manual 76 Appendix B Adding an ET Device Evapotranspiration ET devices can help the LTD adjust irrigation based on weather conditions You can either let an ET device provide daily input on how the irrigation should be adjusted or you can enter historic ET data on how the weather usually behaves throughout the year and the controller will adjust its irrigation accordingly How ET Works with the LTD The LTD will receive ET data from an external weather station or from a historical ET report describing the evaporation throughout the year Combining this data with the input from a rain sensor or a tipping rain bucket and the expected level of irrigation the controller can calculate exactly how much water to use for irrigation Here s a rough breakdown of how ET works with the LTD the items are in no particular order but should all be considered when planning for ET adjusted irrigation e The controller needs a number of inputs in order to calculate the ET correction e Amount of water that has evaporated and transpired The ET figure e Amount of rain fall The rain figure e How much water the soil can retain Soil holding LTD User Manual e How much water is used for irrigation under normal circumstances e The ET and rain figures
64. m is ET controlled the irrigation that is lost on this account is added to tomorrow s ET figure You should ensure that flow limits or reaction delay is set to consider the on off nature of misting programs in order to avoid false alarms Ideally you should use a separate pipe system without flow sensors for misting programs For more information turn to Appendix C Setting Alarm Thresholds on page 110 The LTD can handle up to five station starts within ten seconds so you should avoid starting more than five stations at once or you will start seeing alarms 158 Glossary Term Description Cable Two wires surrounded by insulation Two wire Synonym for a cable Wire An individual copper wire LTD User Manual 160 TUCOR Tucor Inc 518 Wallace Rd Wexford PA 150908642 Phone 8002727472 7249356850 Fax 7249358233 Email tucormail tucor com
65. mal and wet corresponds to 0 24 0 84 and 1 44 of water e The first irrigation period begins with ET 0 20 Rain 0 00 ET balance 0 00 e The irrigation program runs every day if ET balance is above 0 00 no minimum maximum ET defined Allow and prevent irrigation based on the moisture is not used e The water applied by irrigation and rain reach the root zone the same day Factor VSM ET ETm 0 6 dry 0 20 0 20 21 optimal 0 20 0 20 36 wet 0 20 0 20 50 6 dry 0 20 0 30 50 21 optimal 0 20 0 20 50 36 wet 0 20 0 10 100 6 dry 0 20 0 40 100 21 optimal 0 20 0 20 100 36 wet 0 20 0 00 123 LTD User Manual Example D 1 Dry start condition stress point Soil moisture starts at 0 24 Loam Dry soil 0 regulation Field capacity Optimal Permanent wilting point MET day B Rain day B ETM WET Balance Irrigation E Soil moisture We start with 0 20 ET and no rain the first day The soil is dry but we have no regulation Thus the ETm ET Every day the ET balance ETm ET Rain There is no irrigation on 7 5 as the ET balance is negative The result is that we start out with a dry soil and we will keep a dry soil The moisture content in the soil varies over the day as the irrigation falls in the night increase soil moisture an
66. mparing with measurements from a flow sensor You can read about FloStack in For more information turn to Appendix C Adding a flow sensor on page 99 Feature Manager The Feature Manager lets you enable a few extra features that not all users will need most notably the Mist Manager 60 LTD User Manual With the Mist Manager you can add an extra perspective on running irrigation schedules Instead of a program just running one station at atime for a fixed duration you can break each run into multiple cycles Instead of telling the LTD to run a number of stations for three minutes each you can tell it to run each station in 18 second time slices 10 times with breaks in between This adds up to the same water consumption but allows the irrigation to soak in between the cycles Irrigation cycles that are measured in seconds are typically referred to as misting whereas cycles that are measured in minutes are referred to as Cycle amp Soak You can read all about the Feature Manager in For more information turn to Appendix H Advanced irrigation Misting Cycle and Soak on page 151 Another feature is Revert to auto which will pull your controller back into auto mode when it has been sitting in other modes for 10 minutes This ensures that irrigation will always be resumed even if someone leaves the controller hanging in a random menu item 61 LTD User Manual 62 Appendix A How Amount Based Rai
67. n Alarms Work The following examples show how the amount based rain alarm works In all the examples the usable rain is 0 86 Example A 1 Daily ET Max hourly Soil holding Rain alarm limit rain 0 20 standard 0 20 0 50 0 02 Rain alarm dry out 0 60 0 50 0 40 F 030 Rain pulse Balance corrected Alarm 0 20 0 10 0 00 12 00 AM 12 00 PM 12 00 AM 12 00 PM 12 00 AM 12 00 PM 12 00 AM LTD User Manual The graphs show the rain built up the balance whenever it rains Every hour the balance is reduced by a fraction of the Daily ET during the night and during the day When the balance reaches the Rain alarm limit the rain alarm will go on off The second rain burst shows a situation where the max hour rain limits makes limitations More details below The third rain burst shows that we hit the soil holding and by that limit the balance 64 LTD User Manual Rain alarm Max Hourly limit 0 35 0 30 Im 025 m Rain pulse m Balance corrected 0 20 0 15 0 10 0 05 0 00 6 00AM 6 10AM 6 20AM 6 30AM 6 40AM 6 50AM 7 00AM 7 10AM 7 20AM 7 30AM 7 40AM 7 50AM This graph shows how the balance grows minute by minute At each whole hour the balance is corrected for max hourly rain and for the hourly dry out In this case the hour between 7 AM and 7 AM has too much rain compared to max hourly rain and the balance is
68. n Thus the ETm ET Every day the ET balance ETm ET Rain There is no irrigation on 7 5 and 7 13 as the ET balance is negative The result is that we start out with a wet soil and we will keep a wet soil We even keep the moisture above the field capacity which means most of the irrigation is waisted 130 LTD User Manual 0 50 0 50 TA N Loam Wet soil 50 regulation i UN ield capacity At Lp or Mo Sg A z n i A A A AHHAA WAU TS on u u ulm u Permanent wilting 7 1 7 2 7 3 7 4 7 7 6 7 7 7 8 7 9 7 10 7 11 7 12 7 18 7 14 7 15 BET day E Rain day mETm WET Balance Irrigation E Soil moisture The soil will dry towards the nominal value over time It will still irrigate but with less ETm than the collected ET Using prevent irrigation above a certain level would avoid irrigation when it is very wet 131 LTD User Manual Loam Wet soil 100 regulation LT gt P Field capacity _ gt a _ C _ 2_ 5 ct N x Optimal 7 1 7 2 7 3 7 4 7 8 7 9 7 10 7 11 7 12 7 18 7 14 Permanent wilting point MET day 7 15 B Rain day mETm WET Balance Irrigation Soil moisture
69. n is running the Learn Flow feature but only the last measurement is used The last measurement is likely to be the most accurate one as the flow will have stabilized after running for a few minutes 4 Push ENTER to start the test Now you ll see the starting the test at the station you selected ST1 and running it for the selected duration 3 minutes Station auto learn flow in progress station Sm 2 57 Flow 4GPM 5 When a station is done running its measured flow will be stored as the expected flow for that station Pushing CANCEL at any time will abort the learn flow feature but the stations measured so far are still saved This means that you don t have to measure all stations in one sitting simply re run the learn flow feature with a new Start from setting to finish what you may have cancelled earlier Viewing the Current Flow Given that you have configured your flow sensor correctly the LTD lets you see the real time flow directly in the controller display 1 Turn the dial to apvancep use the item selectors to scroll to item number 3 FloGuard and push the enter button Now you ll see this display 110 LTD User Manual FloGuard 1 Station Status 2 Select 4 Flow Sensor Setup and push the ENTER button Now you ll see this display Flow Sensor Setup 1 Flow Sensor Type 3 Select3 Current Flow Pulses and GPM and you ll see the current system flow
70. nd Prevent irrigation is set to 1 34 Thus the irrigation is prevented until the soil moisture drops below 0 34 At that point the ET balance is large and the first coming days irrigation will increase the soil moisture to above prevent level The next five days the soil moisture will drop due to ET until it again allows irrigation In the next period it will not increase above the prevent and start settle at the optimum 134 LTD User Manual Field capacity Prevent Optimal 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 7 11 7 12 7 13 7 14 7 15 Allow Permanent wilting point m ET day Rain day Irrigation Soil moisture This example has the same allow and prevent settings as the previous but instead of ET controlled irrigation as water budget program is used The water budget program is set with start times at 1 AM 2 AM 3 AM 4 AM 5 AM and 6 AM Each start apply 0 15 water and it is assumed this is in the soil following hour The result is again that the soil moisture drops until it is below 0 34 and then on 7 3 the controller irrigates 6 times 0 15 The next day it irrgates 3 times 0 15 until it reach the 1 34 The following days the soil dries out and it all repeates from 7 10 the 135 LTD User Manual 136 Appendix E Changing Station Run Sequence
71. nfigure a lot of settings that you don t have to change in the daily work with the controller e FloStack plan and control system flow e FloGuard monitor the controller for potential problems e Intelliset manage ET devices moisture sensors and related operations e Define a custom irrigation period e Assign booster pumps to programs e Manage the run sequence and mapping of your stations e Enable disable whether or not to display the line e Feature manager enable disable features only used by a subset of users like misting and cycle amp soak irrigation e Erase the entire controller s data in case you re setting up a new system from scratch SOLENOID AMPS In this mode you can test each valve in the field individually 13 LTD User Manual 14 Chapter 3 Programming the LTD Like conventional controllers the LTD must be programmed to control your irrigation The controller itself needs to be configured with basics like date and time and in addition the stations need to be configured and tested Finally you need to create your irrigation programs and possibly configure the system for sensor inputs All of this happens at the controller and this chapter walks you through all the tasks Basic Controller Configuration The controller will remember date time for up to two weeks when not connected to a power outlet Most likely it will have lost this information when you first receive it so the very f
72. o the ET balance and low moisture shall increase the ET applied to the ET balance With full regulation the adjusted ET shall vary between O and double the amount of daily ET The regulation is individual per program Abbreviations Term Description Factor A user definable regulation factor between 0 and 100 Set to O means no regulation Set to 100 means full regulation 100 regulation when wet No ET is added to the balance 100 regulation when dry 2x the ET is added to the balance Wet At or near field capacity Dry At or near permanent wilt point Optimal The target balance between soil and climate ET VSM The actual volumetric soil moisture ETm Moisture adjusted ET and corrected for rain and added to ET balance ET ET for the prior 24 hour period Rain Rain for the prior 24 hour period VSM ranges for the different soil types Soil type VSM dry VSM wet VSM Optimal Standard 0 49 25 5 Sand 2 22 12 Loam 6 36 21 122 LTD User Manual Soil type VSM dry VSM wet VSM Optimal Clay 15 50 32 5 The following examples show 7 days with various daily ET and rain in combination with start off of dry wet or optimal soil condition with 0 50 or 100 regulation The examples have the following common conditions Soil type loam Root zone 4 This means the VSM for dry opti
73. oller This is a microprocessor controlled device that stores your irrigation programs and LTD individual stations in the field when to activate their valve s Irrigation Features Here are the main features that the LTD utilizes to help you automate your irrigation e Controls up to 50 solenoids specifications vary depending on model attached to valves or relays via the built in connection board and three expansion boards e Provides ET corrected irrigation for optimal adjusted water consumption e Measures water flow and raises alarms or halts irrigation on unexpected flow e Allows for 10 independent irrigation programs In addition there is a fixed test program that activates all 50 stations in turn e A program can activate up to 50 stations in named order e Each station can run for up to 17 59 50 In fact you can boost this even further by increasing the water budget For more information turn to Adjusting the ET Water budget on page 30 e Each program can activate one booster pumps in addition to the stations LTD User Manual Master valves and booster pumps will be activated in parallel in all connection and expansion boards specifications vary depending on model All programs have 12 start times per day All programs can run simultaneously You configure each program to run on any selection of days in a 14 day period or on odd even dates You can activate one or more valves or programs manually whi
74. ontroller The following sections walk you through the process Setting Alarm Thresholds For each of the alarms described in Appendix C Alarm Types on page 99 you must set a threshold value and you also need to tell the controller for how long the alarm must be on before the controller should take action Setting the alarm reaction delay 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 3 FloGuard and push the Now you ll see this display ENTER button 100 LTD User Manual x Fleguard 1 Station Status 2 Choose 2 Alarm Thresholds and push the ENTER button Now you ll see the following display Alarm thresholds 1 Alarm Reaction Delay 3 Use the item selectors to select 1 Alarm Reaction Delay Now you ll see the following display yess Alarm Reaction Delay rs Time before reaction O3Minutes 4 Use the item selectors to set the reaction time in minutes The controller won t raise any sensor alarms until they have been on for this period 5 Push the ENTER button to save your selection 101 LTD User Manual Setting the high flow threshold 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 3 FloGuard and push the ENTER button Now you ll see this display FloGuard 1 Station Status 2 Choose 2 Alarm Thresholds and push the ENTER button
75. ore efficient water consumption than you would see from using a flat irrigation scheme throughout the year In addition the LTD provides two extra sources of information about irrigation needs e Moisture sensors that will tell you exactly how moist your soil is giving you the best evidence of how much irrigation is needed e Extended rain shutdown a feature that will halt all irrigation after a rain alarm has occurred regardless of what your ET tells you about irrigation needs e For more information turn to Appendix B Adding an ET Device on page 77 LTD User Manual FloGuard FloGuard is the LTD safety system that constantly monitors the controller for potential problems and raises alarms when needed FloGuard will detect things like pipe leaks faulty stations malfunctioning pumps and many other things that could otherwise go unnoticed and damage your system You will also get notifications of normal alarms like rain alarms ET input short circuits and any alarms stemming from your own auxiliary input devices FloStack The FloStack feature set helps you plan and control the flow in your system By entering an expected flow for each station and a maximum system flow capacity you can ensure that the LTD will not try to start more valves than the system can feed An extremely handy feature is the Learn Flow feature that automatically detects the flow of each station by running all stations in turn and co
76. ou wish to adjust the water budget for and turn the dial to the ET position Now you ll see the following display Program 1 Total run time 0 40 00 Choose method Water Budget 3 Use the item selectors to choose Water Budget and push the Water Budget button Now you ll see the following screen Program 1 Total run time 0 40 00 Select program Water Budget 100 0 250 4 Usethe item selectors to set the appropriate water budget and push the ENTER button to save the setting and exit 29 LTD User Manual Adjusting the ET Water budget 1 Turn the dial to PROGRAM PAUSE ROTO RESUME STOP MANUAL SET DATE amp TIME FF o PROGRAM 2 e e RAIN OFF C RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e J ADVANCED e TWO WIRE SOLENOID AMPS SHORT FINDING 13 00 p 45 o SETUP SENSORS e PROGRAMMING Now the display will look something like this Program 11 Total run time Sta 0 SMTWTFSSMTWTFS 0 2 Usethe item selectors to navigate to the program you wish to adjust the water budget for and turn the dial to the WATER BUDGET ET position 30 LTD User Manual Program 1 Total run time 0 40 00 Choose method Water Budget Use the item selectors to choose ET and push the ENTER button Now you ll see the following display Program
77. owing two procedures show you how to alter and reset station run sequences Changing the station run sequence 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 6 Station Run Sequence amp Mapping and push the ENTER button Now you will see this display de te se le Kun Station Sequences amp Mapping Program Station Run Sequence 2 Select1 Program Station Run Sequence Now you will see the following display Station Sequences 3 Selecti Edit and push the enter button 138 LTD User Manual Now you will see this display Station Sequence Edit Station Si Sequence 1 4 Use the item selectors to select the station you wish to re arrange and change its sequence number 5 Pushthe enter button to save your sequences Resetting station run sequences 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 6 Station Run Sequence amp Mapping and push the ENTER button Now you will see this display Station Sequences amp Mapping 1 Program Station Run Sequence 2 Selecti Program Station Run Sequence Now you will see the following display ee Station Sequences 1 Edit 3 Select2 Reset to factory default and push the ENTER button Now you will see this display 139 LTD User Manual This will reset station sequences to run from 1 to 50 A
78. play FloStack 1 System Flow Capacity Scroll down and select 2 Expected Flow by pushing the ENTER button Now you ll see a scrollable list of stations and their expected flow in gallons per minute 108 LTD User Manual Expected Flow Station T Sml Flow 9GPM 2 Use the item selectors to locate the station you wish to configure and push the ENTER button 3 Now you can set the expected flow using the item selectors and save your setting by pushing ENTER again If the above procedure seems to tedious there s an easier way you can let the LTD asses the expected flow for each station If you choose this approach the controller will run all stations in turn for a fixed duration measure the flow for each of them and save the flow as the expected one Running the learn flow feature 1 Turn the dial to ADVANCED and select 2 FloStack Now you ll see the following display FloStack 1 System Flow Capacity 2 Scroll down and select 3 Learn Flow by pushing the ENTER button Now you ll see the following display ie Learn F ow kkkk Start from T ST1 Sel run time 3min 109 LTD User Manual 3 Use the item selectors both up down right and left to choose a station to start from and set the run time for each station All stations will be run for the same period of time The LTD measures the flow continuously while the statio
79. ppendix G Defining a custom irrigation period on page 163 13 Mst NR There is no response from your Stays on until the sensors are moisture sensors all responding 14 Mst Lv One or more of your moisture Stays on until the moisture sensors is reporting a moisture level below the alarm threshold level is above the threshold 53 LTD User Manual Short name in Full name Description How to clear alarm see note display Alarm below type 15 Rem ET Your controller is not receiving The alarm will be cleared ET data from the remote ET once you have viewed the server alarm list and acknowledged the alarm 2 When you have viewed the list of alarms you will no longer be notified in the display about past alarms Of course you can always revisit the list Monitor Data If your communication subscription allows you can enable the controller to send monitor data to your Web interface Monitoring requires web 3 To enable relaying monitor data to your Web interface follow this procedure 1 Turn the dial to ADVANC A oO 54 LTD User Manual PAUSE BUTS RESUME STOP MANUAL SET DATE amp TIME ltt RAIN OFF C RUNTIME o PROGRAM e RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS J ADVANCED TWO WIRE SOLENOID AMPS SHORT FINDIN
80. py with the selection of days push the CANCEL button or turn the dial away to go back to the main water days screen If you choose to turn away the dial you will see the controller return to the main water budget dialog Now you can turn the dial to another position to edit the remaining aspects of the program Setting Start Times Each program in the LTD can run up to 12 times per day 1 Turn the dial to PROGRAM 24 LTD User Manual PAUSE AUTO RESUME STOP MANUAL SET DATE amp TIME OFF e o Z PROGRAM RAIN OFF RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS d U ADVANCED TWO WIRE SHORT FINDING e SETUP SENSORS e SOLENOID AMPS 13 00 p 454 PROGRAMMING Now the display will look something like this Program 11 Total run time 0 00 00 Sta 0 SMTWTFSSMTWTFS 0 100 P 2 Usethe item selectors to navigate to the program you wish to adjust the start times for and turn the dial to the START TIME position Now you ll see the following display Program 1 Total run time 0 40 00 I 1 Start 25 LTD User Manual Note Program 1 Total run time 0 40 00 1 1 Start Cyc End Misting allows you to determine a more complex irrigation scheme where each start time is repeated a number of times within a specified time
81. re you sure 4 Push the ENTER button to acknowledge that you re resetting the sequence numbers or CANCEL to exit Changing Station Output Mapping In addition to changing the station run sequence you may alter the mapping between station names and physical stations meaning that station 1 can be re mapped to not activate the valve connected to terminal 1 but an arbitrary valve This is how it is done Changing Station Output Mapping 1 Turn the dial to apvancep use the item selectors to scroll to item number 6 Station Run Sequence amp Mapping and push the ENTER button Now you will see this display Station Sequences amp Mapping 1 Program Station Run Sequence 2 Select2 Station Output Mapping and press the ENTER button Now the display will look like this 140 LTD User Manual Station Sequences amp Mapping Program Station Run Sequence Station Output Mapping Edit 3 Select 1 Edit and press the ENTER button Now you will see the following display See TEL ON Mapping ER Station Smi Output 001 4 Use the item selectors to map station names to physical output terminals and press the enter button to save your mapping In case you want to reset to the factory defaults of stations names mapped directly to corresponding terminal IDs follow this procedure Resetting Station Output Mapping 1 Turn the dial to apv
82. reduced Example A 2 Daily ET Max hourly Soil holding Rain alarm limit rain 0 20 standard 0 20 0 50 0 10 65 LTD User Manual Rain alarm dry out Rain pulse Inch o w Balance corrected Alarm 0 00 12 00 AM 12 00 PM 12 00 AM 12 00 PM 12 00 AM 12 00 PM 12 00 AM In this graph we see the same as in example 1 except that the rain alarm goes on later and off earlier Example A 3 Daily ET Max hourly Soil holding Rain alarm limit rain 0 30 standard 0 20 0 50 0 02 66 LTD User Manual Rain alarm dry out Rain pulse Balance corrected Alarm 0 00 12 00 AM 12 00 PM 12 00 AM 12 00 PM 12 00 AM 12 00 PM 12 00 AM This shows a more dry condition with higher ET than standard The alarm period is then shorter Configuring the Extended Rain Shutdown Feature Given enough rain at some point the LTD will halt irrigation based on the values you have set in Section A 1 However there is a way to further refine this feature by defining 67 LTD User Manual e How many hours the rain alarm must be active before an extended rain shutdown will actually occur e lf the extended rain shutdown should be longer than the duration of the rain alarm e For how long the extended rain shutdown can last First you must enable the extended rain shu
83. s simultaneously This can come in handy if a certain part of the terrain needs a little extra watering but you don t want to reconfigure a program for just one time s sake 40 LTD User Manual Running a station manually 1 Pushthe STATION button and the following display appears Select station 1 STL Sel run 00 01 00 Press right arrow key to select run time 2 Use the item selectors to select the station you wish to activate If you re happy with the suggested run time push the ENTER button Otherwise push the right arrow of the item selectors to move the cursor to the right to adjust the run time and then push the ENTER button Now the station will start running immediately Program Station STL 12 58 PM Remain Remain 0 05 00 2GPM You can use the item selectors to browse through the list of running stations and programs from this display If you want to run more stations manually just go through this procedure again for each station you want to activate To stop a manually started station before the end of its run time use the item selectors to locate it and push the stop button 41 LTD User Manual Running Extra Programs in Auto Mode When the LTD is running in auto mode you have the option of manually starting additional programs in parallel So if program 1 wants to run station 12 from 08 00 to 08 10 and program 2 wants to run that same station from 08 05 to 08 15 the sta
84. spite the even date your irrigation period has started earlier than midnight September 3 02 00 AM Runs as expected September 3 05 00 AM Runs as expected September 3 06 00 PM Runs as expected September 3 11 00 PM Will not run despite the odd date your irrigation window has closed e All ET calculations are based on the irrigation period be it the standard one or your custom period 2 Youcandefine a non water window by not letting the period span 24 hours If you define the start to 06 00 PM and the end to 08 00 AM no programs or stations will be started between 08 00 AM and 06 00 PM Programs that try to start in the non water window will generate an alarm And ifa program is running when the non water window starts the program is halted and an alarm is raised For more information turn to Chapter 4 Alarms on page 45 Here is how you actually define the irrigation period at the controller 148 LTD User Manual Configuring the Irrigation Period 1 Turn the dial to ADVANCED use the item selectors to scroll to item number 4 Irrigation Period and push the ENTER button Now you ll see this display xxs Terigacion Period Start 12 00 AM End 12 00 AM 2 Use the item selectors to set the start and end time and push the ENTER button to save your settings 149 LTD User Manual 150 Appendix H Advanced irrigation Misting Cycle and Soak Th
85. stations stacking programs that exceed the expected flow or even cutting off the water supply completely if it seems that you have a leak This works by letting a flow sensor measure the flow on the main pipe that feeds your system and connecting the flow sensor to the LTD There are four types of flow alarms three of which can go off when irrigating and one that is only relevant when no stations are running Alarm Types Alarm Name Description What happens High Flow Occurs when your system is All running programs are using more gallons per halted minute than your defined threshold Flow Deviation Occurs when your flow is All running stations are above or below a certain halted and blacklisted percentage from the expected flow Unscheduled Occurs when there is aflow Normally open master valve Flow even when there shouldn t NOM is activated for be when no stations are 17 59 50 running This indicates a leak somewhere on the pipe LTD User Manual Alarm Name Description What happens Master Pump Occurs when your flow is The master pump or all Failure MFP below a certain threshold running programs are stopped depending on your configuration For more information turn to Appendix C Setting Alarm Actions on page 107 Before you can take advantage of the features associated with flow sensor input you have to connect a flow sensor and configure a few things in the c
86. system Overload is defined as a current of more than 2A for more than five minutes If you enable current readings you will get a FUSE message in the display if a fuse is blown out You may also run the electrical test for a specific station and get a definite answer to whether there is an overload situation of a blown fuse in that station 5 High F High flow alarm The alarm stays on as long as the flow is too high You can clear the notification by viewing the alarm list 6 MPF Main pump failure The alarm will be cleared once you have viewed the alarm list and acknowledged the alarm 51 LTD User Manual Short name in Full name Description How to clear alarm see note display Alarm below type 7 USch F Unscheduled flow alarm This Stays on as long as the flow means that water is flowing in is too high The normally your pipes when you re not open master valve NOM irrigating Such an alarm will be activated so the indicates that you have a leak alarm will clear itself but you can clear the notification by viewing the alarm list 8 St Err Station error alarm This means Stays on until all stations are that one or more stations in the labeled OK For more field have failed and will only information turn to be raised if you are using a flow Appendix C Inspecting and sensor Toggling Station Status on Note page 112 You can clear the notification b
87. tdown feature set 1 Turn the dial to ADVANCED PAUSE AUTO RESUME STOP MANUAL SET DATE amp TIME OFF RAIN OFF RUNTIME o PROGRAM RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e e ADVANCED e TWO WIRE SOLENOID AMPS SHORT FINDING 1p e0 8 153 SETUP SENSORS e PROGRAMMING Now the display looks like this 68 LTD User Manual Advanced Setup 1 FloStack 2 Select 8 Feature Manager Now you will see the following Feature Manager 1 Ena Dis Cycle and End Time 3 Select2 Ena Dis Extended Rain Alarm Now you will see the following Ena Dis Extended Rain Alarm Disable 4 Select Enable and push the ENTER button to save Now you are ready to actually configure the extended rain shutdown parameters 1 Use the item selectors to select 3 Intelliset and push the ENTER button Now you ll see the following screen ET Moisture 2 Select 3 Extended Rain Alarm Now you see the following screen 69 LTD User Manual Rain Min Duration Adjust Max Shutdown 0000 minutes 00 0 999 Hour Important Note The three values you must set here are Setting Description Minimum Rain For how long must the rain alarm have been active before an Duration extended rain
88. the alarm meaning that the alarm is still on Had the alarm ceased you would see the end time too Use the item selectors to scroll through the list The list contains information on the latest observed alarms of the 12 known alarm types 49 LTD User Manual Alarms in the LTD Short name in Full name Description How to clear alarm see note This will only ever be raised if you re running in ET enabled mode For more information turn to Appendix B How ET Works with the LTD on page 77 display Alarm below type 1 Rain Rain alarm Will automatically disappear when it stops raining 2 Alarm Whatever alarm you have The alarm stays on as long as attached to the alarm termnial the attached alarm is active If you re using the AUX terminal but you can clear it by for a flow sensor you won t viewing the alarm list ever see this alarm 3 ET Evapotranspiration alarm Will automatically disappear when the ET enable device is no longer controlling your irrigation 50 LTD User Manual Short name in Full name Description How to clear alarm see note display Alarm below type 4 Short Short alarm The alarm stays on as long as there is a short in your Note system You can clear the A short alarm may really bea notification by viewing the Broken Fuse alarm or a alarm list general Overload alarm it need not be a true short in your
89. tion will be run from 08 00 to 08 15 Running a program manually has the advantage that you can select which station should be run first allowing you to skip a part of the program 1 Push the procram button Now there will be an arrow next to the program number indicating that you should select the program you wish to run Select program 1 Start with Station 1 Total Stations 4 Total run 0 28 00 2 Use the item selectors to pick the desired program and push the right arrow in the item selectors to move on to select which station should be the first to run 42 LTD User Manual Select program 1 Start With Statio t 1 Total Stations 4 Total run 0 28 00 3 Use the item selectors to select the station you wish to start with and push the ENTER button Now the controller will run the selected program keeping you informed of the status of the program Program 11 Station STL 12 20 PM Remain 0 28 00 Remain 0 08 00 3GPM You can browse through the status of running programs with the item selectors If you want to run more programs manually just go through this procedure again for each program you want to activate To stop a manually started program before the end of its run time use the item selectors to locate it and push the STOP button Running LTD in Manual Mode The LTD allows you to run all programs and stations manually only not obeying the schedules for the 10 programs To enable this feature t
90. urn the dial to the MANUAL position 43 LTD User Manual PAUSE une RESUME STOP MANUAL SET DATE amp TIME OFF e PROGRAM e e RAIN OFF RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MOISTURE SENSOR PROGRAM STATUS e e ADVANCED e TWO WIRE SOLENOID AMPS SHORT FINDING a 00 p 453 e SETUP SENSORS e PROGRAMMING Now the controller is ready to run programs or stations manually and you re prompted to select one of the two Manual Operations 08 54 PM Select Program or Station From here on the procedure for running stations is identical to Running a station manually For more information turn to Chapter 4 Running a station manually on page 41 44 LTD User Manual Alarms When running in AUTO or MANUAL mode the LTD will react on a number of conditions by raising one or more alarms Becoming aware of alarms on site If the LTD has received an alarm and is in AUTO or MANUAL mode For more information turn to Chapter 4 Running the LTD on page 37 the bottom row of the display will toggle between normal text and the alarm that has arrived For example if you had a rain alarm at 01 10 PM your display will toggle between normal mode and alarm notification Program 2 Start Tue 05 00 AM 03 14 PM Total Stations 3 Total run 1 10 00 Program 2 Start Tue 05 00 AM 03 14 PM
91. wing sources 93 LTD User Manual Name in controller menu Description Local Weather Station Input is pulses from a weather station and tipping bucket For more information turn to on page 97 Historic ET Manually entered historical ET data For more information turn to Using Historical ET Data on page 94 Remote E ET and rain data is received from the RealNet server ta J Remote ET data is received from the RealNet server No rain data received Local WS with Alarm send Same as Local Weather Station but rain alarm activation de activation will be passed on to the RealNet server For more information turn to on page 97 swap in your preferred source for the local weather station Using Historical ET Data If you don t have a local weather station you can use historical ET data to correct your irrigation instead Before you start this procedure you need to know how much water evaporates every month of the year on a daily basis Meaning that for each month you ll get to enter a figure that will be used each day that month 94 LTD User Manual Configuring for Historical ET Data 1 1 Turn the dial to ADVANCED PAUSE AUTO RESUME STOP MANUAL SET DATE amp TIME FF o PROGRAM 9 o e RAIN OFF C RUNTIME RAIN ALARM STATUS WATER DAYS VIEW ALARMS START TIME VIEW ET amp RAIN WATER BUDGET ET VIEW MO
92. y viewing the This alarm only concerns flow alarm list related problems not any electrical errors that may occur in a station 9 Max St Maximum number of stations The alarm will be cleared reached This means that a program tried to start a station when the maximum number of stations was already running once you have viewed the alarm list and acknowledged the alarm 52 LTD User Manual Short name in Full name Description How to clear alarm see note display Alarm below type 10 Repeat The number of repeats has The alarm will be cleared been reduced in a misting once you have viewed the program This typically happens alarm list and acknowledged if ET expands the run the alarm time for repeats and the program can t fit all the repeats into the configured time frame For more information turn to Appendix H Advanced irrigation Misting Cycle and Soak on page 151 11 NW Prg A program has not been run The alarm will be cleared because it was set to start in once you have viewed the the non water time window alarm list and acknowledged For more information turn to the alarm Appendix G Defining a custom irrigation period on page 163 12 NW Stp A program was halted because The alarm will be cleared it was running when entering once you have viewed the the non water time window alarm list and acknowledged For more information turn to the alarm A

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