Chapter 2 – Seeder Settings
9
Drive settings
l Motor selection: Sets the number of pulses per motor revolution
for the motor.
l Pulses/rev: Set the number of pulses / revolutions for each
revolution of the metering shaft.
l Min motor RPM/ max motor RPM: Sets minimum / maximum
motor shaft RPM.
l Gear ratio:Gear ratio between the drive motor and the metering
unit.
l Soft start:Allows a gradual increase in the control signal when the
motor is activated. This is used to prevent mechanical damage from
sudden starts.
l Shaft sensor: Enable the sensor that is used to detect when the
metering shaft has stopped so that an alarm can be raised.
l Shaft pulses/rev: Sets how many pulses the metering shaft sensor
provides per revolution.
Actuator drive
A linear actuator controls the lever to adjust the gearbox speed from a
ground drive shaft. The output shaft from the gearbox drives the
metering unit. Rate is controlled by controlling the ratio of the gearbox
via the position of the actuator.
Drive settings
l Encoder teeth: The number of pulses per revolution of the drive
shaft. The number of teeth can be counted or procured from the
drive manufacturer.
l Clutch: Enable to allow control of the tank clutch.
l Style: Select from Zeromax, Bourgault, generic.
Proportional valve drive
A proportional valve (P valve) controls the hydraulic oil flow to the
motor to vary the speed of the motor so that the metering unit is only
delivering what is required. It uses a solenoid to open a hydraulic valve
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