System Setup
Line Title
Line
Number
Description
Action
Nozzle Pulse Frequency Press ENTER to change.32
All CapstanAG sprayer systems run at 10 pulses per second pulse frequency. To run a
faster pulse frequency, enter a larger number. CapstanAG does not recommend pulse
frequencies slower than 10Hz in sprayer applications.
Nozzle PWM Minimum Press ENTER to change.33
The nozzle PWM minimum value is the minimum pulse duty cycle for the nozzle valves.
You may not change this value any less than the Nozzle Pulse Frequency value. If the
Nozzle Pulse Frequency is set to 10 pulses, then the nozzle PWM minimum must be set to
10 or higher. If you are is uncomfortable about running low duty cycles, then this value can
be set higher.
Nozzle PWM Maximum Press ENTER to change.34
It is unlikely that you would set the nozzle PWM maximum lower than 100%. This is where
the limit to the maximum duty cycle would be set.
Flowmeter Minimum GPM Press ENTER to change.35
The flowmeter minimum gallons per minute value is the minimum flow at which the
turbine flowmeter is no longer accurate. When in correction mode, the PinPoint
™
II will
automatically calculate the flow below this value. This is especially important when the
system is operating with only a few nozzles, like point rows, filling gaps, etc. The system
calculation accurately measures flow through a single nozzle.
Flowmeter Output Type Press ENTER to change.36
In Correction mode, the flow reported to the rate controller automatically switches from
the turbine flowmeter to a calculation whenever the flow falls below Flowmeter Minimum
GPM and also when a partial boom section is pulsing. Transparent mode prohibits this
switch and only uses the turbine value regardless of accuracy. Calculate mode uses only
the calculation.
Flowmeter Calibration Press ENTER to change.37
It is important for the flow meter calibration value to match the tag on the turbine flowmeter
so that the gallon counters will match the rate controller. The system uses “pulses per 10-
gallons.” If the flowmeter tag is in “pulses per gallon,” multiply by 10. If the rate controller
requires “pulses per gallon,” divide by 10. You can check this by monitoring the gallons per
minute shown in System Setup and comparing it to the rate controller.
Flowmeter Error Limit Press ENTER to change.38
The flowmeter error limit ranges from Disabled to 50%. Flow % higher than the chosen %
will cause a fault message and an alarm.
Flowmeter Error Press ENTER to change.39
The flowmeter error shows the real-time % difference between the flowmeter and the
calculated flow.
©
2020 Capstan Ag Systems, Inc. 49 PinPoint
™
II
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