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3.1 Main components for installation
The robotic system involves 4 main components:
•
Robotic lawn mower
•
Charging station
•
Power supply
•
Loop wire
Go to the manufacturer's website or read the Operator's
manual for further descriptions about the product and
the installation.
3.2 The loop system's control signals
The loop system consists of boundary wire and guide
wire connected to the charging station. Some models
have several guide wires. The loop system essentially
comprises these different signals:
•
A signal, sets the boundary for the working area.
•
F signal, is generated by a loop in the charging
station so that the product knows that it is in the
vicinity of the charging station.
•
Guide signal, leads the product to the charging
station, but can also be used to guide the product
from the charging station to a remote area.
To check the A, F and Guide signals, refer to the
signal on page 43 .
3.3 LED indicator lamp on the charging station
The loop system's status is easily checked using the
LED indicator lamp on the charging station. Refer to
Loop signal on page 43 .
3.4 Boundary loop
The strength of the A signal varies depending on the
distance. The strength of the signal is high close to
the wire. The strength subsequently diminishes the
1413 - 003 - 17.01.2022
3 Product and installation
farther away from the wire you get. Outside the work
area the signal is negative and its strength diminishes
more rapidly. Signal quality should always be 100% for
satisfactory function.
The strength of the signal is affected by the size of the
work area, islands, headlands, passages and corners.
The signal can also be affected by magnetic objects in
the ground or in nearby walls and buildings. Examples
of magnetic objects are iron fences, iron girders and
reinforcement bars. Grass areas laid on concrete roofs
can therefore lead to a weaker signal.
The A signal's reception and amplification can vary by
+/- 10% from one product to another. This means that
at the same point in an installation, one product can
display A=90 and another one A=100. The charging
station's circuit board and the product's loop sensor can
also give certain variations between different products.
3.4.1 To test the boundary loop
The product displays the
an attempt is made to start the product before the
installation is complete.
However, it is possible to test the product before the
installation is completed by doing one of the following:
•
•
3.4.2 Obstacles
To demarcate an obstacle, you can put the boundary
wire from the edge of the work area to the obstacle,
around it and then back.
Loop
3.5 Guide loop
The guide wire, together with the part of the boundary
loop that comprises the return to the charging station,
is called the guide loop. The current in the guide loop
always goes from the guide wire to the left in the
connection between guide wire and boundary loop.
The strength of the guide signal varies like the A signal
depending on the distance to the guide loop. Inside
the guide loop the signal is positive and the strength
160
100
40
A
No loop signal message if
Connect a short, temporary loop around the product.
Temporarily deactivate the product's loop detection.
Tools - Special settings on page 10 .
Refer to
CAUTION: The boundary wire must not be
crossed on its way to and from an island.
15 m/49 ft.
Product and installation - 5
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