Operating the forage harvester with automatic row guidance functionality allows to concentrate better on controlling the real harvesting functions.

Activation Of The Row Guidance Function

The automatic row guidance system implements a standby mode and an automatic steering operating mode. The following conditions have to be met for the activation (not for enabling) of the row guidance functions:

• The road safety switch in field operating mode

• Operator is in the seat
• Quick stop switch is not pressed
• Engine speed is greater than or equal to 1500 rpm
• Forage harvester is traveling forward (hydrostatic drive in forward position)
• Ground speed has not exceeded 15 km/h (9.3 mph)
• The steering hydraulic pressure switch is not activated
• Cutterhead is turned on
• Row guidance system is in standby mode (row guidance enable switch was pressed)

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Off Mode

The row guidance control system implements the OFF mode whenever the road safety switch (A) is not in field operating mode or when the row guidance enable switch (B) was not pressed (while the road safety switch is in field operating mode). This functionality ensures that no row guidance function can accidentally be activated. In the OFF mode of the automatic row guidance system, manual steering is allowed.

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Standby Mode

Whenever the row guidance enable switch (A) is pressed, while the road safety switch (B) is in field operating mode, the row guidance control system enters the standby mode. In standby mode no automatic row guidance function is implemented but manual steering is allowed.

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Automatic Steering Mode

While in standby mode, the electronic row guidance control system will enter automatic steering mode whenever the row guidance activation button (A) on the multi-function lever is pressed. In automatic steering mode, the signals of the front feelers will permanently provide information on relative vehicle to row position to the electronic row guidance system.

The electronic row guidance control system will deactivate automatic steering mode if one of the following conditions exists:

• Operator goes off the seat for more than 5 seconds
• Ground speed exceeds a certain value (15 km/h)
• Turning the steering wheel
• Pressing the quick stop switch
• Multi-function lever is not in forward position
• A deviation from normal operation on the front feelers or the steering feedback sensor is detected
• Pressing the row guidance activate switch on the multi-function lever
• Error detected in the row guidance system

Whenever the automatic steering mode is deactivated by the row guidance control system (self-deactivation) or by the operator, an acoustic signal will sound (function deactivate notification). Once the row guidance system is operating in automatic steering mode, the operator can deactivate and re-activate automatic steering mode by pressing the row guidance activate switch on the multi-function lever. Thus he will be able to toggle between standby mode and automatic steering mode, which means between manual and automatic steering.

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Calibration and Diagnosis

For correct row guidance functionality, the electric and hydraulic system components need to be calibrated. Components to calibrate:

• The front feelers
• The steering feedback sensor
• The left / right steering valves
• The row guidance setpoint potentiometer

Furthermore several row guidance control parameters can be set if necessary.

To calibrate ratio setting use the following address:

• Ratio setting - Address RGC 101

Configures the adaptive steering control based on vehicle speed.

To calibrate filter setting use the following address:

• Filter setting - Address RGC 102

Configures the sensitivity of the feelers.

To calibrate feeler settings use the following addresses:

• Feeler rest position - Address RGC 106
• Feeler maximum deflect position - Address RGC 107
• Steering offset- Address RGC 104
• Bias calibration- Address RGC 105
• Steering test mode- Address RGC 108
• Feeler side swap- Address RGC 109

Configures the scale of the feeler range.

IMPORTANT: To calibrate to row guidance control unit, ALWAYS observe the following sequence: Address ,106, 107, 104, 105, 108 and 109. Two persons are required to carry out calibration.

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