Assigning Mainlines (BaseStation 3200)
Posted by Leanne Lloyd-Fairey on 08 January 2015 03:37 PM

NOTE: If you are using BaseManager with a BaseStation 3200 V16 controller, see the updated help.

  1. Make sure that the controller that you want to assign mainlines to is displayed in the BaseManager footer. To select a different controller, click the Menu icon in the upper-left corner of the BaseManager page, and then click Sites and Controllers. Continue drilling down until you can select the desired controller.
  2. Position the cursor on the Water Sources tab, and then click Mainlines in the menu that displays.
  3. In the Mainlines list, click in the row for mainline that you want to assign. The Mainline page displays.

Note: To return to the Mainlines list, click the < arrow in the upper-left of the Mainline page.

  1. Click the Edit button in the lower-right of the BaseManager footer. The Mainline fields become availble for editing.
  2. In the Description field, type a name that makes this Mainline easy to identify.

Note: Limit the number of characters in the Description to 42 characters. If you enter a longer description, the controller will automatically shorten it, and then pass the new version back to BaseManager.

  1. In the Design Flow GPM field, type or select the specified gallons per minute (GPM) for the point of connection (POC) that supplies water through the flow device to the rest of the irrigation system. The BaseStation 3200 uses this value to manage the number of concurrent zones so that the water source is used as efficiently as possible. If you set this value to zero, you cannot use this GPM amount to control zone concurrency.
  2. In the Pipe Fill/Stabilize field, type or select the amount of time that it takes to fill the pipe and achieve a steady flow rate after a valve change. The default value is 2 minutes, but you can set it to any value between 1 and 30 minutes.
  3. Select the Concurrent Zones by Flow check box if you want the controller to use the design flow of the individual zones (or learned flow) and turn on zones that are waiting to water until their design flow is equal to or less than the available flow on the mainline.
  4. In the High Flow Variance (Alarm) field, you can set the high variance limit to 0 (Off) or to any value between 1% and 100%. During normal program watering, the controller compares the sum of the design flow (or learned flow) from all running zones against the measured flow of the flow device (or the sum of all flow devices supplying water to the mainline). The measured flow may be higher or lower than the expected flow. When the ratio becomes greater than the variance, then an alarm is generated. For example, if the expected flow is 50 GPM, and the High Alarm variance is 10%, then the acceptable flow range is up to 55 GPM.
  5. Select the Shutdown check box if you want the system to shut down when the high variance exceeds the limits. A high alarm prompts the system to determine the zone (or set of zones) that is causing the high flow variance. The currently running zones are marked as "suspects" and are shut off. The program continues to water with another set of zones and one of the suspect zones. If the variance is within limits, the zone will be marked as good and watering will continue. If the variance is out of limit, then the zone will be marked as a failure and shut down. This method allows watering to continue almost without interruption, while isolating the faulty zone or zones.
  6. In the Low Flow Variance (Alarm) field, you can set the low variance limit to 0 (Off) or from 1% to 100%. During normal program watering, the controller compares the sum of the design flow (or learned flow) from all running zones against the measured flow of the flow device (or the sum of all flow devices supplying water to the mainline). The measured flow may be higher or lower than the expected flow. When the ratio becomes greater than the variance, then an alarm is generated. For example, if the expected flow is 50 GPM, and the Low Alarm variance is 10%, then the acceptable flow range is down to 45 GPM.
  7. Select the Shutdown check box if you want the system to shut down when the low variance exceeds the limits. A low alarm prompts the system to determine the zone (or set of zones) that is causing the low flow variance. The currently running zones are marked as "suspects" and are shut off. The program continues to water with another set of zones and one of the suspect zones. If the variance is within limits, the zone will be marked as good and watering will continue. If the variance is out of limit, then the zone will be marked as a failure and shut down. This method allows watering to continue almost without interruption, while isolating the faulty zone or zones.
  8. When you finish making changes to the Mainline settings, click the Save button in the BaseManager footer.