Ag Leader Intellislope Ver.5.2 Operation Manual - Manual (Page 43)

39
D
IAGNOSTICS
any uneven surface, the plow hitch will be similarly raised or lowered, pulling the plow frame with it. Pitch
control will compensate, however the hydraulics can only fill the cylinders so fast, and so may not keep
up. To allow the system to keep up, drive over any uneven surface as slowly as possible.
L
OW
H
YDRAULIC
P
RESSURE
Forces acting on the buried plow shank are large. In the face of these forces, the hydraulic cylinders
actuating the plow shank must create large forces and thus high hydraulic pressure is required to
displace them. Insufficient hydraulic pressure can leave the system unable to adequately control pitch.
Lower pressure can also make the plow slower to respond as it slows down the rate at which the
hydraulic cylinders fill.
Older tractors may have open-center hydraulic systems in which hydraulic pressure is proportional to
engine RPM, so at low RPM there is insufficient pressure. Modern closed-center hydraulic systems are
pressure regulated and are not subject to this problem.
F
AILURE TO
F
LOAT THE
T
HREE
-
POINT
H
ITCH OR
W
HEEL
F
RAME
The plow needs to float and freely pivot as it goes through the soil. Force exerted from the three-point
hitch, or wheel frame on pull type plows will displace the plow from the target depth. Always ensure the
three-point hitch, and wheel frame are in the "Float" setting before beginning installation.
O
PERATING
T
OO
S
HALLOW
(less than ~20 inches), and Pull-type Plow Down Pressure
Forces bearing upon the top of the shank allow it to drive deeper when required by control logic. When
too shallow, this force can be insufficient.
Related to this issue is the down pressure in the wheel cylinders of a pull-type plow. When shallow
operation of a pull-type plow is required, the valve setting on the down-pressure cylinders should be
lowered. Too much up pressure can also lift the plow up from the target profile.
The down pressure, depth of operation and soil conditions may interact such that some soil may require
deeper operation or lower down pressure than other soils.
D
RIVING
T
OO
F
AST
When an installation is started with the plow much deeper than the target profile, the system will
schedule a target that rises rapidly towards the target profile. When this steep section meets the
relatively-level target profile, driving too fast can cause the plow to overshoot the target, as the cylinders
can only change the plow pitch so fast. Drive slowly when the target profile grade is changing rapidly.
O
BSTRUCTIONS
If you encounter a rock or other obstruction in the field use the Stop Tiling button, and end the install.
After you have freed the plow from the rock you are now able to continue tiling. If using Grade Control
Mode, you can use the Grade Break to raise the target depth to prevent a flow reversal in the tile. If you
were using Autotile, re-select the survey, and adjust the depth settings to create a new target depth. This
may include lowering the Minimum depth value, lowering the grade, or lowering the max depth value.
D
ETUNED
C
ONFIGURATION
P
ARAMETERS
The pitch gain, look ahead distance, valve thresholds, start compensation and pitch zero settings are
discussed in
“Water Management” on page 10 . Low gains and valve offsets can make the plow respond too
lazily, and setting them too high can induce instability.