Auto Header Height Control (Ahhc) - MacDon FlexDraper FD1 Series Operator's Manual

Combine header

Hide thumbs Also See for FlexDraper FD1 Series:

Table of Contents

3.8 Auto Header Height Control (AHHC)

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 the 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 two-sensor system is also available as an optional kit. Refer to

Figure 3.153: FM100 Float Module

FM100 Float Modules are factory-equipped for AHHC; however, before using the AHHC feature, you must do the

1. Ensure that the AHHC sensor's output voltage range is appropriate for the combine.

For more information, refer to

2. Prepare the combine to use the AHHC feature (applies only to some combine models—refer to the 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 instructions for your combine).

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).

3.8.2 Sensor Output Voltage Range – Combine Requirements, page

6.5.1 ., page 555.