PAT DS 350 / 1334 GRAPHIC, Operator'S Manual, Page: 35 / 51

Operation 31
THERE ARE NO CUTOUTS ASSOCIATED WITH THE VIRTUAL WALL FEATURE.
Virtual Wall Limit
The virtual wall limit allows the operator to define a vertical wall that can represent obstacles
(i.e. buildings, towers, poles, etc.) in the
crane’s working range. The wall is set by defining
points with the boom tip within a safe working distance from the obstacle, see setup procedure
below. Because these walls are defined by the operator and are not actual/real walls, we refer to
them as
“ virtual”
walls. When setting the walls, always keep a safe working distance to any
obstacles. Never work outside a safe working area as outlined by common practice, standards,
and manuals.
A virtual wall is set by defining two points. To prevent inaccuracies when defining the two points
for the virtual wall, use the following to rules:

The two points should be at the same distance from the obstacle.

Set the two points at the maximum distance apart, which can be safely reached by the
boom tip.
The operator can set up a virtual wall and trim or remove part of the wall to best define the
obstacle. The wall is defined by a straight line between two set points and then can be trimmed
by positioning the boom tip at a point near the wall and removing part of the wall to the left or
right of the boom. After the walls have been set, the system alerts the operator when the boom
approaches them. This is done both visual and audible. The console will warn the operator by an
audible, beeping alarm, which increases in frequency as the boom approaches the wall. At the
same times, the control light
“ Alarm Stop”
(refer to no. 6, chapter 3.3 of
the operator’s manual)
will come on and the button
“LIM”
(refer to no. 8, chapter 3.3 of
the operator’s manual) will be
lit. Similarly, the
“ virtual wall”
symbol in the main screen blinks. If the boom crosses the wall
the audible alarm becomes continuous.