Chapter 2 – Seeder Settings
15
l Soft start: Allows a gradual increase in the valve signal when the
valve is activated. This is used to prevent mechanical damage from
sudden starts.
l Soft stop: Allows a gradual decrease in the valve signal when the
valve is deactivated. This is used to prevent mechanical damage
from sudden stops.
l Dump valve: Use this option if the proportional valve has its own
dump valve on each channel.
l Min PWM/max PWM: Select a percentage. Min PWM sets the
minimum amount of PWM or power required to allow the metering
unit to rotate or discharge product. Max PWM sets the maximum
amount of power that can be provided to the valve running the
metering unit before maximum possible speed is achieved. Higher
percentage sets the pulse of power for longer during a pulse cycle.
l Controller response: This sets how quickly the controller tries to
achieve the required rate. If set too high, the seeder may pass the
target rate and take time to adjust, searching for the right level. If
set too low, the valve will take a long time to move to the desired
rate and control will be slow to respond. Find the best setting for
the equipment being used.
Pressure settings
l Pressure sensor: Use this option if a liquid pressure sensor is fitted
to this tank.
l Max pressure: Sets the maximum pressure for the voltage pressure
sensor.
l Min voltage: Sets the minimum output voltage at zero pressure.
This value is read from the pressure transducer.
l Max voltage: Sets the maximum output voltage at maximum
pressure. This value is read from the pressure transducer.
Pump sense
l Speed monitoring: If the system is fitted with a pump speed sensor
for this tank, enable it here. Refer to ECU Setup, page 37 to then
assign the sensor to a pin on the ECU.
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