Manitowoc Grove GRT880, Operator'S Manual

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OPERATING CONTROLS AND PROCEDURES GRT880 OPERATOR MANUAL
3-52
Published 3-25-2020, Control # 643-04
First Virtual Wall Procedure
To define and enable the first Virtual Wall (assuming no
Virtual Walls are already defined), the following steps can be
used:
1. The Wall Limitation Screen (Figure 3-25) is to be shown
on the display (and in this case there would not be any
virtual walls shown as defined or active).
2. Use the Left Arrow and/or Right Arrow function to
highlight the Lockout symbol (orange color; refer to
Table 3-8:). If this symbol is not shown, then only alarm/
warning option is available).
3. Use an OK button (item 2, Figure 3-18) to change the
lockout option to either affect controls (including
lockout), if desired, or to just get warning indicators from
the display. Again, this step can be ignored if this symbol
is not shown.
4. Position the crane so that the hook is located at the
position to define the first point of the Virtual Wall (Point
A).
5. Use the Right Arrow function to highlight the Accept
Crane Position Point A symbol (refer to Table 3-8:).
6. Use an OK button to accept the current crane position to
be Point A. The location of the point should now be
shown on the screen with a label of '1a'.
7. Position the crane so that the hook is located at the
position to define the second point of the Virtual Wall
(Point B). The 2 points may not be so close to each other
that a virtual wall is not clearly defined; the 2 points
should be at least 10 ft apart.
8. Use the Right Arrow function, if needed, to highlight the
Accept Crane Position Point B symbol (refer to Table 3-
8:).
9. Use an OK button to accept the current crane position to
be Point B. The location of the point should now be
shown on the screen with a label of '1b'. The screen
should also show a maroon-colored “forbidden zone” for
the area beyond the Virtual Wall (such as for 2 such
walls in Figure 3-25). Use a visual inspection of the
screen and the area around the crane to verify that the
Virtual Wall is providing the desired zone correctly. Also,
note that the boom is now at the wall limitation, so
alarms are most likely sounding. The boom can now be
moved away from the wall to cease the alarm. Refer to
Table 3-2: for how the alarm performs when the lockout
option is not used. Refer to Figure 3-18 for the button to
cancel an audible alarm (once boom motion has
stopped).
10. The Virtual Wall #1 is now defined and enabled. Crane
operations can be resumed with the WRL working with
this specified limitation. Note that the Virtual Wall
Number on the display increments to 2 so that it is ready
to define a subsequent virtual wall, if so desired.
Subsequent Virtual Wall Procedure
To define and enable further Virtual Walls (such as Virtual
Wall 2 through 5), the following steps can be used:
1. The Wall Limitation Screen (similar to Figure 3-25) is to
be shown on the display.
2. Use the Right Arrow function to highlight the Virtual Wall
Number (refer to Table 3-8:).
3. If the wall number shown is not the correct number for
the new wall (note that it increments automatically when
the previous wall was defined), use an OK button (item
2, Figure 3-18) to allow modifying the value. Use the Up/
Down Arrows to alter the Virtual Wall number to the
desired value. Use an OK button to finish entering the
value.
4. Position the crane so that the hook is located at the
position to define the first point of the Virtual Wall (Point
A).
5. Use the Right Arrow function to highlight the Accept
Crane Position Point A symbol (refer to Table 3-8:).
6. Use an OK button to accept the current crane position to
be Point A. The location of the point should now be
shown on the screen with a label that shows the wall
number and the letter 'a'.
7. Position the crane so that the hook is located at the
position to define the second point of the Virtual Wall
(Point B). The 2 points may not be so close to each other
that a virtual wall is not clearly defined; the 2 points
should be at least 10 ft apart.
8. Use the Right Arrow function, if needed, to highlight the
Accept Crane Position Point B symbol (refer to Table 3-
8:).
9. Use an OK button to accept the current crane position to
be Point B. The location of the point should now be
shown on the screen with a label. The screen should
also show another maroon-colored “forbidden zone” for
the area beyond the Virtual Wall. Use a visual inspection
of the screen and the area around the crane to verify that
the Virtual Walls are providing the desired zone
correctly. Again, note that the boom is now at the wall
limitation, so alarms are most likely sounding. The boom
can now be moved away from the wall to cease the
alarm. Refer to Table 3-2: for how the alarm performs
when the lockout option is not used. Refer to Figure 3-18
for the button to cancel an audible alarm (once boom
motion has stopped).
10. The multiple Virtual Walls are now defined and enabled.
Crane operations can be resumed with the WRL working
with this specified limitation.