I
NSTALLATION
W
ATER
O
BSTACLE
15
•
do not cross or twist the approach and return
side of the peripheral wire
6.8 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 figure below.
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.
6.9 Sloped Fields
The maximum slope on any part of the field must be
less than or equal to 17°.
If a sloping part of the field is well away from the
peripheral wire, no specific programming of the robot
is required. If the sloping part of the field is near the
peripheral wire, program the robot to return to the
charging station by descending the slope.
This example describes how to configure a station loop
wire to return the robot to the charging station. There
is one wire that defines the area to be mowed; this wire
is named "Field", the additional wire is named "Loop".
The “Field” wire is the peripheral wire. The “Loop” wire
is the station loop wire.
1 – Obstacle
2 – Direction to install peripheral wire (and movement of robot)
3 – Peripheral wire
4 – Fixed distance between approach and return sides
2
3
4
1
15.7 - 23.6 in.
(400 - 600 mm)
1 – Peripheral wire
2 – Charging station
A
B
1
2
2
хϱ͘ϯŌ͘
(>1.6 m)
хϰϵ͘ϮŌ͘
(>15.0 m)
хϰϵ͘ϮŌ͘
(>15.0 m)
DRAFT
05-23-2019
