48
5.
Press SETUP to access the "MHS" setting. Use the +/- switch
to edit the setting to the desired vale. This is the minimum
height setting for SOIL mode. It is not recommended to set this
below 15 inches.
6.
Press and hold setup for two seconds to return to the operating
screen.
Attempting to lower the booms to a target height below the defined “MHC”
or “MHS” will result in the LCD screen flashing “Minimum Override”.
6.6.5.2 Minimum Height Mode
Two minimum height modes (SP and FIXED) are available to prevent
wing height errors from multiple sensors. Figure 9 illustrates an example
where this is necessary. The average height (from sensor 1 and 2) is greater
than the desired boom height setpoint, which would cause the boom to drop.
In the case as illustrated, this would bring the boom unacceptably close to
the ground. However, sensor 1 will not allow this to occur since it restricts
the boom from dropping below the minimum height, defined either by the
SP or FIXED value. The SP minimum height mode prevents any one
sensor from being forced below the target height (setpoint), where as the
FIXED height mode prevents any one sensor from being forced below the
MHS and MHC values. Due to performance reasons, it is not recommended
to set the MHS and MHC below 15 and 22 inches, respectively.
Figure 9. Averaged Height Reading
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