3.7.3.1
MIN
CALIBRATION HYDRAULICS
PULSE
(
)
The minimum settings required to move the blade or bucket up or down can be
determined by selecting the ‘Min Test’ option.
In this test mode the system automatically applies an up and down pulse
alternately, allowing the user to see in real time the effect on the blade
movement with each change in value for minimum up and minimum down
settings.
Press
key to begin the Min Pulse calibration
[ENTER]
.
Calibration - Left
Min Test
Max Test
Exit
150
150
UP
Down
MIN Pulse Test - Left
figure 19
When doing Min Pulse Test, the aim is to find the
minimum s
which will move the
etting
blade or
bucket by the smallest amount in both up
and
ward
down
direction.
ward
Use the
key to adjust the value of inimum
[AUX1]
M
for up.
Use the
key adjust the value of inimum
[AUX2]
M
to
for down.
100
100
UP
Down
MIN Pulse Test - Left
figure 20
To determine the min settings:
1. Manually position the blade or bucket in the middle of the hydraulic cylinder
working range.
2. Start with the minimum value of 100 for both up and down
3. Slowly increase the value for Min Up. Stop when a small up movement is
noticed on the blade or bucket.
4. Slowly increase the value for min pulse down, stop when a small
movement is noticed in blade.
5. Carefully adjust the Min Up and Down around these value to achieve a
symmetrical response.
6. When a symmetrical response is achieved , the blade or bucket will oscillate
above and below a fixed spot during the test and should not drift gradually
up or down.
7. When finished, press the
key to return back to the Calibration menu
[MENU]
.
Note: uring the test the hydraulic cylinder may end up moving to the limit in
D
,
one direction. Manually move the cylinder back in the middle of its working range
before continuing with the test.
