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W
I
IRE
NSTALLATION
O
BSTACLES
9.7.1 Water Obstacle
!
WATER AMPLIFIES THE ELECTROMAG-
NETIC SIGNAL OF THE PERIPHERAL
WIRE
The robot is attracted towards higher signal levels.
Failure to correctly avoid a water obstacle can re-
sult in submersion of the robot.
•
Use an island or a pseudo-island to avoid a wa-
ter obstacle.
Install the peripheral wire a minimum distance of
5.3 ft. (1.6 m) from the edge of the water. Increase this
distance if the ground slopes towards the water, is slip-
pery, or can become wet or flooded.
If meeting the minimum distance of 5.3 ft. (1.6 m) is not
possible, install a physical barrier around the water.
Install the charging station a minimum of 49.2 ft. (15 m)
from the edge of the water.
Two possible installations for the charging station are
shown in the following figure.
NOTE: The robot should return to the charging station
from the direction away from the water.
If the charging station is located at Point A, program the
robot to return to it in a clockwise direction.
If the charging station is located at Point B, program the
robot to return to it in a counterclockwise direction.
20
CAUTION
A
2
(>1.6 m)
1 – Peripheral wire
2 – Charging station
B
2
1
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