Harvest Smart Feed Rate Control—System and Field Symptoms
Machine is accelerating too slow:
Machine stops or overspeeds dramatically:
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If machine is at low end of threshing speed range and feed rate
overspeeds, increase rotor speed by 20 - 30 rpm. Ground speed is held
for ten seconds after rotor speed is increased or decreased. After
ten seconds a five second average of rotor pressure is taken and a
new value is set for target pressure.
NOTE: Harvest Smart has limits detecting rotor load at the low
and high end of threshing speed. If after fifteen seconds, averaged
system seems unstable calibrate Target Value again.
Ground speed oscillating:
NOTE: When harvesting new crops, it is normal for machine to
oscillate for a short period of time.
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Decrease response rate.
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Machine is operating near maximum power (under rated speed of
engine) and is causing machine to oscillate (speed up/slow down ground
speed), see Harvest Smart Feed Rate—System Adjustments in this
section.
-
Decrease response rate to stop oscillation and adjust target
engine speed to control ground speed.
Ground speed oscillating in hilly conditions:
-
As machine moves up hill it keeps a constant ground speed. If
machine is moving up a steep hill, machine slows slightly due to high
hydrostatic forces, see Harvest Smart Feed Rate—System Adjustments
in this section.
-
As machine moves down hill it increases in speed, see Harvest
Smart Feed Rate—System Adjustments in this section.
-
Operator should set a maximum harvest ground speed that is comfortable.
This allows machine to not exceed maximum speed when going down a
hill.
NOTE: When harvesting in areas where crop conditions are tougher
or along waterways and washouts, it is recommended that operator pull
back on multi-function lever. This gains control of machine and slows
ground speed if operator feels machine is moving too fast.
Target or ground speed increases with no
losses:
-
When operating in Smart Mode, VisionTrak sensors are not working
(matted over, disconnected, or are damaged), which causes machine
to increase speed resulting in high losses, see Harvest Smart Feed
Rate—System Adjustments in this section.
-
Change from operating in Smart Mode to Capacity Mode. This allows
constant material flow, allowing machine to increase speed when crop
materials are lighter and decrease speed when crop materials are heavier.
System loses target values:
-
When operating in Smart Mode, system continuously recalculates
target pressure values to adjust ground speed.
-
Harvest Smart must be recalibrated each time key switch is cycled.
System does not retain entry speed through key cycles.
Machine reacts too slow for crop changes:
-
Machine response rate adjust is too slow, see Response Rate
Calibration in previous section.
NOTE: Increasing response rate by increments of one is hardly
noticeable. Increasing response rate by increments of 20 is more noticeable.
-
Continue to increase response rate until oscillating occurs
and lower response rate from that point.
-
High response rate settings cause machine to make abrupt ground
speed changes to maintain crop volume.
-
Low response rate settings allow for less aggressive changes.
Machine reacts aggressively to crop losses:
-
Capacity Mode allows constant material flow, allowing machine
to increase speed when crop materials are lighter and decrease speed
when crop materials are heavier.
-
Recalibrate VisionTrak, see Harvest Smart Feed Rate—Initial
Calibration in this section.
-
If recalibrating VisionTrak has no affect, switch to Capacity
Mode, see Harvest Smart Feed Rate—System Adjustments in this
section.
-
In some conditions, Capacity Mode is a better mode for operation.
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