5.4101.8538.0 B
4-2 Description and Operation
4.2 Operation
When the machine is in rest, the machine is in a vertical position. When a cow moves the motor housing,
the motor starts to rotate the brush (see figure 3 on page 4-2).
• Two inductive sensors monitor the movement of the brush and engage the motor. When the motor
housing is back in the vertical position for 4 seconds, the motor stops.
• If the motor housing moves clockwise, the brush starts to rotate counterclockwise and vice versa.
• The torque on the brush is limited by the motor control.
Figure 3. Motor housing movement
KEY:
A: When the motor housing moves clockwise, the brush rotates counter clockwise
B: When the motor housing moves counterclockwise, the brush rotates clockwise
4.2.1 The Brush
Two colors are used for the hairs to provide the brush with a pattern. This enables visual confirmation
when the brush rotates.
4.2.2 Cow Protection
The motor torque is always limited by the controller to avoid hurting the cow. If the torque rises to the
maximum allowed value for 2 seconds, the controller will stop the motor for 20 seconds. This is designed
to help the cow escape in case it’s tail is caught in the brush. After 20 seconds in vertical position, the
brush will work normally.
in n o vato rs in ag ric u lt u re
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