CASE IH PRO VISION OPERATING SYSTEM GUIDE
48
AFS Pro 1200
™
Display
HITCH / DRAFT CONTROL
The Three-Point Hitch on the rear of the tractor has two functions:
• Lift and lower implement loads attached to the hitch. For reference and to better understand the
process we are going to call this the “VERTICAL LOAD”
• The hitch has a feature within it called Draft Control and this feature controls what we are going to call
“HORIZONTAL LOAD” on the tractor Three-Point Hitch.
A When the draft control is set, its function is to maintain a desired horizontal load on the lower lift links
as the sensors for the draft load are the pins attached to the lower links of the tractor frame.
1. When the horizontal load on the draft control goes beyond the draft load set limit, the three-point
hitch is commanded to raise the hitch until the horizontal load goes down to the draft load set limit.
2. When the horizontal load becomes less than the set draft load, the three-point hitch is commanded
to lower the hitch until the horizontal load goes back up to the draft load set limit.
B When using draft control, the “Sensitivity” of the draft load can be set. By setting the sensitivity, the
draft control operation window is either smaller or larger.
1. The less sensitivity on the draft load control, the wider the “Sensing Window” is before the hitch
responds to the draft load.
2. The higher the sensitivity is on the draft load control, the narrower the “Sensing Window” is before
the hitch responds to the draft load.
The Magnum tractor draft control has such a wide draft load sensing ability that very precise depth control
can be achieved, and sensitivity capacity is wide enough to handle draft load sensing very rapidly.
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