BaseStation 3200 User Manual â 11.7.5.15 ... - Baseline Systems

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BaseStation 3200 Advanced Irrigation Controller Manual • Design Flow GPM – This field is the flow rating for the mainline in gallons per minute (GPM). This flow is likely different from the design flow of the POC/flow device. When a mainline has multiple POCs of different capacity, the controller uses the constrained design flow to determine the actual available flow for watering. For example, consider the following design flows: Flow Device #1 = 50 GPM Flow Device #2 = 75 GPM Mainline #1 = 100 GPM In the example, the controller would use 100 GPM for managing zone concurrency unless flow device #2 was shut off (over budget). In this case, the controller would use 50 GPM. • Pipe Fill Time – This field represents the 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. Zone changes are made at the top of the minute, and the zone is considered stable after the pipe fill time. One minute after the pipe fill time, a valid flow is calculated (over the last minute interval). • Limit by Flow – When the Limit by Flow field is set to Y (yes) the controller will use the design flow of the individual zones (or learned flow) and will turn on zones that are waiting to water until their design flow is equal or less than the available flow on the mainline. For example, with 100 GPM available, the system can run three zones at 30 GPM and a fourth at 10 GPM at one time – later there may be two zones at 30 GPM and one at 20 GPM (the system cannot always hit 100 GPM exactly). • Flow Variance Settings • High Alarm – You can set the high variance limit to 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 (10% of 50 GPM is 5 GPM). • High Shutdown – Set this field to Y (yes) to have the system 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. • Low Alarm – You can set the low variance limit to 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 (10% of 50 GPM is 5 GPM). • Low Shutdown – Set this field to Y (yes) to have the system 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, Page 60
BaseStation 3200 Advanced Irrigation Controller Manual 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. To set up the mainline 1. Turn the dial to the Flow Menu position. 2. Press the NEXT button to select Mainline Setup, and then press the ENTR button. The Mainline Setup screen displays. 3. In the Mainline Number field, press the + or – button to select the number of the mainline that you want to set up. 4. Press the NEXT button to go to the Design Flow GPM field, and then press the + button to enter the amount of flow in gallons per minute (GPM) that is allowed through the mainline for the irrigation system. Note: Press and hold the + button or the – button to rapidly increase or decrease the number in the field. 5. Press the NEXT button to go to the Pipe Fill Time field, and then press the + button to enter the amount of time that it takes to fill the pipe and achieve a steady flow rate after a valve change. 6. Press the NEXT button to go to the Limit by Flow field. If you want the controller to use the mainline design flow to determine how many zones can run concurrently, press the + button to enter Y (yes). 7. Press the NEXT button to go to the High Alarm field. If you want to set an alarm for a high flow variance condition, press the + button to enter a percentage in the field. Example: If the expected flow is 50 GPM, and the High Alarm field is set to 10%, then the acceptable flow range is up to 55 GPM (10% of 50 GPM is 5 GPM). A flow amount over 55 GPM would trigger the high flow variance alarm. 8. Press the NEXT button to go to the High Shutdown field. If you want the system to shut down when a high flow is detected, press the + button to enter Y (yes). 9. Press the NEXT button to go to the Low Alarm field. If you want to set an alarm for a low flow variance condition, press the + button to enter a percentage in the field. Example: If the expected flow is 50 GPM, and the Low Alarm field is set to 10%, then the flow can decrease to 45 GPM (10% of 50 GPM is 5 GPM). A flow amount below 45 GPM would trigger the low flow variance alarm. 10. Press the NEXT button to go to the Low Shutdown field. If you want the system to shut down when a low flow is detected, press the + button to enter Y (yes). 11. When you have finished making changes, turn the dial to the Auto Run position. Managing Concurrent Zones In the BaseStation 3200, you manage the number of zones that can run concurrently at the following levels: • Mainline Flow Level – When you set up the design flow for the mainline and then set the Limit by Flow field to Y (yes), the system uses the mainline design flow to determine how many zones can run concurrently. Refer to Mainline Setup overview on page 59. • Controller and Program Level – If you want the controller to water more than one zone at a time, you must configure the Zone Concurrency settings at the controller and program level. Page 61
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BaseStation 3200 Advanced Irrigatio
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Table of Contents 1 - INTRODUCTION
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6 - INITIAL PROGRAMMING ...........
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Troubleshooting the Two-Wire: High
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BaseStation 3200 User Manual â 11.7.5.15 ... - Baseline Systems