Table of Contents
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Control Valve Settings - PWM
Determines how aggressively the control valve responds when making rate change adjustments. The
higher the value the more aggressive the system response is.
• 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's information for recommended settings.
Control Valve Settings - Servo
is less than the Response Threshold setting.
• Response Threshold
Determines the system responsiveness to rate change.
Auxiliary Tab
The Auxiliary Tab of the Controller Settings screen adjusts the minimum speed, threshold and rate time
of the motion detection sensor that turns the Hydraulic Drive on.
• Rate Not Responding Time
The amount of time that the error occurs before the alarm sounds.
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• Control Valve
Setting determines the type of control valve being used for the
hydraulic motor. Choices include PWM or Servo.
• PWM Frequency
The frequency that the PWM control valve is pulsed at. Settings
can be found from the manufacturer of the valve. Typical settings
range from 100-125 Hz.
• PWM Gain
• Control Valve
Setting determines the type of control valve being used for the
hydraulic motor. Choices include PWM or Servo.
• Valve Response 1
Determines the speed of the servo valve when product control error
exceeds the Response Threshold setting.
• Valve Response 2
Determines the speed of the servo valve when product control error
• Minimum Ground Speed
The Minimum Ground Speed performs two functions: It determines
the speed at which the motion detection sensor disengages and
actual ground speed is used for rate control; and also determines
the minimum seed meter RPM when the motion detection sensor
is active.
• Rate Not Responding Threshold
The percentage of seed rate error that triggers the alarms.
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Table of Contents
Troubleshooting
