Honda HRM300 Manual page 179

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TECHNICAL FEATURES
DETECTION OF THE BOUNDARY WIRE
The overlap distance of the lawnmower from the boundary wire is possible to set up (20 - 45cm).
The lawnmower detects the boundary wire by using three area sensors.
If one of the area sensors goes beyond the boundary wire and overlap distance is reached, the lawnmower will stop instantly, move
backward and rotates until all of the sensor confirm that the lawnmower is inside of the boundary wire.
If all of the area sensor are outside from the boundary wire, the lawnmower will stop the blade motor and traction motor, also
indicate the information on the display.
If the lawnmower cannot receive the signal from the boundary wire, the lawnmower will stop the blade motor and traction motor and
indicate the information on the display until it receives the signal again.
AREA SENSOR OPERATING IMAGE
BOUNDARY WIRE
Overlap distance
OUTSIDE OF THE AREA
One of the front area sensor
goes beyond the boundary
wire
2-8
The area sensor detect the magnetic flux
direction changing when beyond the
boundary wire.
All of the area sensor are
outside of the boundary wire
Stops the blade motor and
traction motors
INSIDE OF THE AREA
PULSE CURRENT
Lawnmower cannot receive the
signal from the boundary wire
Stops the blade motor and
traction motors