John Deere AutoTrac™ Controller - StellarSupport - John Deere

Adjusting Steering Sensitivity Level
The steering sensitivity must be adjusted to accommodate
field conditions and tractor/implement configuration.
Steering sensitivity should always be evaluated when
implement is activated. In general, soft soil requires a
higher steering sensitivity level than firm ground and an
Figure A
GS3 Display 2630
A—10 second B—1 second C—Track
Too Low—If steering sensitivity is too low, a slow
wandering track error pattern can be observed on display.
This track error pattern takes approximately 10 seconds to
go from side to side as is shown in FIGURE A. If excessive
track error is occurring, increase steering sensitivity by
small increments until desired accuracy is achieved.
NOTE: It is normal to see a momentary track error when
encountering a large rut, furrow, or implement load
change. Proper steering sensitivity adjustment
will help minimize track error.
Too High—Setting steering sensitivity to highest level
will not result in maximum tracking accuracy. If steering
sensitivity is too high, excessive front wheel motion
will be observed which reduces accuracy and causes
unnecessary front axle component wear. At extreme
high levels, machine motion will become large enough to
cause steering sensitivity to be momentarily changed to
default level. Wheel motion to watch for when determining
if aggressiveness is too high occurs at an interval of
approximately 1 second from side to side as shown in
FIGURE B. If excessive wheel motion is observed, lower
steering sensitivity by small increments until desired
performance is achieved.
Optimizing AutoTrac Controller Performance
When operating in curves, start with the curve sensitivity
equal to the optimized acquire sensitivity.
These default settings are a good starting point for most
conditions. Each setting can be adjusted to try and
optimize performance. Operator may need to readjust
line sensitivity, heading, and line sensitivity tracking for
best results. Increase or decrease settings to change
aggressiveness as desired. If system is not responsive
enough, increase sensitivity settings. If desired
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integral implement requires a higher steering sensitivity
than a similar drawn implement. Finally, steering
sensitivity will not address condition where front wheels
are not able to turn tractor. Always make sure front axle
load with implement activated is sufficient for steering
before adjusting steering sensitivity level.
Figure B
performance is not achieved, see TROUBLESHOOTING
section for more detail.
Advanced AutoTrac Settings
Tuning Recommendations
NOTE: AutoTrac Controller has been tuned to perform
very well in most field conditions using the
variety of implements encountered by AutoTrac.
However, for those conditions outside of normal,
we have provided Advanced Settings to allow
the operator fine tune their systems for specific
field conditions and implements.
Problem or Situation:
AutoTrac performance during line acquisitions, Curve Trac
or in-row S-ing that can’t be tuned out using the Steering
Sensitivity adjustment.
Difficult ground conditions (extremely soft or extremely
rough) require additional tuning beyond the capabilities of
the standard Steering Sensitivity value.
Read this information in it’s entirety BEFORE tuning
AutoTrac Advanced Settings.
AutoTrac Advanced Settings software includes 6 different
tunable sensitivities that allow finer adjustment of the
AutoTrac system. The following are details for tuning
this software:
1. Check & fix other problems before you
tune—Perform necessary mechanical checks and
calibrations through associated tractor. It is important
to do this step first otherwise you run the risk of
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