Great Plains DICKEY-john AI-120 12-inch Virtual Terminal - Manual (Page 174)

OPERATOR’S MANUAL
AI-120 Virtual Terminal
11001-1606B-201310
166 / AUTO STEERING CALIBRATION
STEERING TUNING CALIBRATION
5. Press the Steering Tune button to display steering tuning window.
6. On line aggressiveness determines how precise the auto steering
system attempts to follow a guideline when locked on a line. An ideal
line aggressive percentage allows the vehicle to follow an accurate line
without wheel oscillation. Default value is 50.
– A higher percentage sets a very precise path
7. Approach aggressiveness determines how quick auto steering
attempts to move onto a guideline.
– A higher percentage turns the vehicle harder and more sharply to
move to a nearby guideline quicker.
IMPORTANT: Default value is 50 for FWA tractors and needs to be
reduced significantly when steering vehicles with large
implements or booms, especially sprayers.
8. Maximum steering angle limits the turning angle of of the wheels and
should be set to ensure the system stays within the vehicle and
implement safe-turning capabilities.
– This setting prevents the accidental occurrence of extremely sharp
turns when autosteering is enabled.
9. Sensitivity is an AES-25 electric steering specific tuning parameter.
Default value for most vehicles types is 100.
– Should only be reduced if the steering shows signs of instability or
oscillation.
10. Deadbands is an AES-25 electric steering specific tuning parameter
that allows for adjustment of the minimum wheel reaction speed when
in auto guidance mode to compensate for steering free-play. The
electric steering wheel is in steering “free-play” when it is not reacting
in order to maintain the vehicle’s position along the guideline.
– It is recommended that deadband is set at a low value initially and
then increased gradually to suit vehicle requirements.
11. Disengage torque is an AES-25 electric steering specific tuning
parameter that sets the amount of torque (turning force) the operator
must apply to the steering wheel to disengage auto guidance.
– If set too low, the steering may disengage during periods of rapid
steering wheel movement, such as during line acquisition.