5.2011.8583.0 C
7-10 Troubleshooting
MFR is in alarm before reaching
the reset strip
Solution:
Preventive measure:
The MFR assumes it is further on
the route than it actually is.
Excessive slip while driving the
route action is a possible cause.
Maybe the length of the route
action has been altered or
affected because of other
changes in the route.
A wheel diameter that is set too
high will also cause this type of
problem.
Manually drive the MFR forwards
to just before the reset strip and
resume the route.
Improve the conditions for the
MFR (clean surface, check the
condition/tread of wheels).
Ask your Lely Center to adjust
wheel diameter when necessary:
• When the MFR always looks
too early for the reset points:
decrease wheel diameter
• When the MFR only looks to
early on one route action:
increase the length of that
route action.
Reset strip not recognised Solution:
Preventive measure:
To recognise a reset point as
such, the MFR needs to detect a
big enough change in magnetic
field of both inductive sensors. If
the sensor already detects a
field when there is no strip this
will decrease the sensitivity,
equally so when the sensor does
not detect enough magnetic
field when there is steel under it.
If one sensor detects the steel
long before the other sensor
does, the MFR may not see it as
a reset point.
Reset strips should be as close
as possible and perpendicular to
the driving direction. Preferably
not more than 30 degree but
certainly not at a 45 degree
angle or bigger. If there is a lot
of feed on top of the reset strip
it is possible that the MFR is
pushed to the middle and miss
the strip.
Wet dirt or ice on the sensors
orstrips influences the
measurement and
Misalignment of the sensors will
make them unreliable.
Manually put the MFR just
before the reset strip and
resume the route. If it does not
find the reset point look in Test
> Test sensors > inductive
sensors.
When no steel is present the
ADC value should be significantly
higher than 700. If it is lower the
sensor(housing) may be full of
conductive dirt (wet), influenced
by foreign steel objects or water
in the housing.
When a (steel) reset strip is
under the sensor the ADC value
should be significantly lower
than 200, preferably around 80.
If it is higher the sensor may be
adjusted too high, the sensor
may have become dislodged in
the sensor housing or defective.
A reset strip should be
perpendicular (as much as
possible) to the driving direction
to prevent a confusing signal
given by the set of sensors.
Put reset strips perpendicular to
the driving direction, clean
sensors and keep them well
adjusted.
in n o vato rs in agriculture
To Next Page
Loading...
