259 Ag Leader PN 4002083 Rev. N
A
PPLICATION
L
IQUID
R
ATE
C
ONTROL
• Zero Flow Offset
Represents the maximum duty cycle that is sent to the control valve without producing any hydraulic flow
from the PWM valve. Using too high of a Zero Flow Offset value can cause the product control system to
not properly control low rates. See the PWM valve manufacturer information for recommended settings.
• Shaft Speed Cal
Calibration number representing the pulses that equal one revolution of the rate control metering system.
• Max Conveyor Speed
Setting determines the maximum RPM of the conveyor that controls product distribution to the application
point. This setting is used when controlling a spinner spreader applicator.
• Fan Speed Cal
Number of pulses that are generated by the sensor during one revolution of the blower fan shaft.
• Max Metering Speed
Setting determines the maximum RPM of the metering shaft that controls product distribution to the
application point. This setting is used when controlling a granular strip-till toolbar.
• Min Speed
Setting represents the desired minimum speed of the blower fan. An alarm will sound if the blower fan
speed falls below this value.
• Max Speed
Setting represents the desired maximum speed of the blower fan. An alarm will sound if the blower fan
speed exceeds this value.
• Low Fan Speed Shutoff
When selected, granular product application of a strip-till toolbar will be shut off if fan speed drops below
the Min Speed setting.
• Rate Threshold
Percentage difference between the Actual Rate and the Target Rate when the Rate Not Responding
Message is displayed on the Run screen.
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