Baseline Systems BaseStation 3200 - Manual (Page 49)

C h a p t e r 3 – A d v a n c e d P r o g r a m m i n g
Page 47
Baseline 3200
zone would run concurrently. If program B was running by itself, only three zones would run
concurrently.
If your system does not have a flow device, then you can control zone currency without having to
input design flows for all zones and the mainline, by just using this screen. With one or more
flow devices, a good strategy is to set the controller and program concurrency limits to a
reasonable maximum and then lower specific programs if they have some special considerations
(mainline branch is smaller, longer, or you want to slow the compleation time of a program, or if
the two-wire length is very long and you want to control the voltage drop by limiting the current
to those valves).
Learning Flow
With one or more flow devices the BaseStation 3200 has the ability to do a learn flow cycle to
determine the flow for zones. The learn flow cycle can be set either by program, or for individual
zones. The learn flow cycle can be delayed from
15 minutes to 23 hours and 45 minutes.
Program Learn Flow
To set up a learn flow cycle for a program enter
the Program Learn Flow menu of the top Flow
Menu dial position. Highlight the desired
program using the NEXT/PREV keys. In this
example, all programs are disabled except
program A.
Press the + key to set the learn time in 15 minute
increments in the future, up to about 24 hours. At the 24 hour point the status will return to Not
Yet (in this example). Using both the + and – keys, a desired delay can be set. Multiple programs
can be set to learn, each at a different time, or the same time.
When the learn flow cycle begins, it will pause any running programs (on that mainline) and will
then run one zone at a time to learn its flow. It will take several minutes to learn the flow for
each zone. For example, if the valid flow delay is two minutes, here are the learn flow steps for
each zone:

Turn on the zone

After two minutes the flow has stabilized

Take a one minute stable flow reading at the end of the third minute

Take a second stable reading at the end of the fourth minute

If the two readings are within 5%, take the average and set this as the zone learn flow
value and set the status as passed

If the values differ by more than 5%, take a third reading at the end of the fifth minute

Average the readings and set the learn flow value

If the readings are within 5% of the average, set the zone status to pass, otherwise set
it to failed and issue an alert.