Harvest Smart™ Feed Rate Control—System and Field Symptoms

Machine is accelerating too slow:

• Increase sensitivity rate, see Harvest Smart™ Feed Rate—Sensitivity in this section.
  • At higher sensitivity rates, machine responds faster to changes. NOTE: Increasing sensitivity rate by increments of one is hardly noticeable. Increasing sensitivity rate by increments of 20 is more noticeable. After getting in an acceptable performance range, settings can be refined more closely.

    Increasing sensitivity rate has no effect on maximum deceleration.

    
    

Machine stops or overspeeds dramatically:

• 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.

• Decrease sensitivity rate.
• 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—Sensitivity in this section.
  • Decrease sensitivity rate to stop oscillation and adjust target engine speed to control ground speed.

Ground speed oscillating in hilly conditions:

• As machine moves uphill, 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—Max Harvest Speed in this section.
• As machine moves downhill, it increases in speed, see Harvest Smart™ Feed Rate—Max Harvest Speed 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— Smart or Capacity Modes 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 sensitivity rate adjust is too slow, see Harvest Smart™ Feed Rate— Sensitivity in this section. NOTE: Increasing sensitivity rate by increments of one is hardly noticeable. Increasing sensitivity rate by increments of 20 is more noticeable.
  
  • Continue to increase sensitivity rate until oscillating occurs and lower sensitivity rate from that point.
  • High sensitivity rate settings cause machine to make abrupt ground speed changes to maintain crop volume.
  • Low sensitivity 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 effect, switch to Capacity Mode, see Harvest Smart™ Feed Rate—Smart or Capacity Modes in this section.
  • In some conditions, Capacity Mode is a better mode for operation.