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Revision A
Chapter 9:
Setting up Auto Header Height Control
9.1
Auto Header Height Control
MacDon
’
s auto header height control (AHHC) feature works in conjunction with the AHHC option available on certain
combine models.
A sensor is installed in float indicator box (A) on the FM100 Float Module. This sensor sends a signal to the combine
allowing it to maintain a consistent cutting height and an optimum float as the header follows ground contours. A lateral
tilt two-sensor system is also available as an optional kit.
Figure 9.1: FM100 Float Module
1019633
A
FM100 Float Modules are factory-equipped for AHHC; however, before using the AHHC feature, you must do the following:
1.
Ensure that the AHHC sensor
’
s output voltage range is appropriate for the combine. For more information, refer to
9.1.3 Sensor Output Voltage Range
Combine Requirements, page 307
.
2.
Prepare the combine to use the AHHC feature (applies only to some combine models
—
refer to the following
instructions for your combine).
3.
Calibrate the AHHC system so that the combine can correctly interpret data from the height sensor on the float
module (refer to the following instructions for your combine).
NOTE:
Once calibration is complete, you are ready to use the AHHC feature in the field. Individual combine settings can
improve AHHC performance (refer to your combine instruction manual).
