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Medium Control Unit
5.7 Description of the Baling
Process
5.7.1 Bale Channel is Empty
When the control unit is turned on, the display is
always in Manual mode.
With this setting, the bale channel must
first be filled to a pressure of about 50 bar
(for straw) and 25 bar (for silage) to
prevent the bale channel flaps from
bending out of shape.
When the bale channel is filled, the
pressure must be set high enough so that
the bale will be as solid as desired.
To always achieve the same solidity of bales
automatically with materials of different properties (for
example with differing moisture content of materials on
the same field), you should then switch into Automatic
mode.
The program will then use the baling force that was
previously reached from Manual mode.
The contact pressure of the bale channel flaps is
controlled automatically by the job computer so that
the selected force of pressure is achieved.
As the material becomes moister, it becomes more
difficult to compress the bales. Because of this, the
bale channel flap pressure is slightly reduced. As the
material becomes drier, the bale channel flap pressure
increases again.
The pressure that is shown in the display may deviate
considerably because of this.
Bale quality and solidity remain constant.
Additional information:
The baling force is recorded by two sensors on the
inside of the front frame section. Then it is amplified
and sent to the job computer.
The job computer evaluates the signals and then
controls the pressure of the hydraulic cylinders of the
baling channel flaps.
The signals are also used by the control unit to display
the direction of motion.
The greater the difference between the measured
forces of the left and right sensor, the stronger the
indications for the direction of motion.
If the indications are too strong or too weak, they can
still be adjusted (see Sect. 5.8.5)
5.7.2 Bale Channel is Full
Same as Chapter 5.7.1 with the following difference:
1. If you will be baling in Automatic mode, you can
switch into Automatic mode immediately after the
machine starts.
The last target force to be used will be used again
in this case, i.e. you can continue baling with the
same settings after turning the machine off and
back on.
The force of pressure setting should
not have been adjusted after the
control system is turned on in manual
mode, because the control system
then “forgets” the last settings.
2. If you will be baling in Manual mode, the force of
pressure should be adjusted to the desired value
immediately after the control system is started.
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