OPERATING CONTROLS AND PROCEDURES
GRT880 OPERATOR MANUAL
3-42
Published 3-25-2020, Control # 643-04
Table 3-5: Screen Symbols
In addition to the symbols that can be highlighted by the
arrow functions, the following are shown on the screen:
Boom Up Limitation Procedure by Crane
Position
To define and enable the Boom Up Limitation using the crane
current boom angle as the limitation, the following steps can
be used:
1.
Position the crane to have the desired position.
2.
The Boom Up/Down Limitation Screen (Figure 3-22) is
to be shown on the display.
3.
Use the Left Arrow and/or Right Arrow function to
highlight the Lockout symbol (orange color; refer to
Table 3-5:). If this symbol is not shown, then only alarm/
warning option is available).
4.
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.
5.
Use the Right Arrow function to highlight the Enable
symbol (refer to Table 3-5:).
6.
Use an OK button to set the symbol to the limitation
being enabled - it will have the green color when
Symbol
Description
Lockout symbol - this symbol indicates the selection for affecting crane functions (lockout) or just
alarm/warning. This symbol will not appear if the WRL is not configured for the lockout option.
Furthermore, in some countries, regulations may require the use of the lockout configuration, and
lockout will always be enabled (so it may not be able to change from lockout to alarm/warning). The
selection for this option is toggled with an OK button (item 2, Figure 3-18). The top symbol indicates
that the crane functions will be affected (lockout). The bottom symbol indicates that the crane
functions will not be affected (but warnings will still be indicated).
Enable symbol (2X) - these symbols are used to enable or disable the boom up or boom down
limitation (which one is indicated by the position of the symbol on the screen - symbol near the high
boom angle is for boom up and the one near the low boom angle is for boom down). The selection for
this option is changed with an OK button. The symbols shown on the top (green background) indicate
that the limitation is enabled. The symbols shown on the bottom (not green background) indicate that
the limitation is disabled.
Accept Crane Position symbol (2X) - If the limitation is enabled, these symbols allow the acceptance
of the current crane position to be the limitation value (again which one is indicated by the position of
the symbol on the screen). If this symbol is highlighted (as shown here with orange background), and
the crane position is accepted with an OK button (item 2, Figure 3-18), then the value shown in the
related Limitation Value is updated to be the current crane position. Also, if the limitation value is
beyond allowable limits, a fault will be generated, and a fault symbol will appear on the display.
Symbol
Description
Boom Up Limitation Value - this value is the currently specified boom angle limitation value for Boom
Up.
Boom Down Limitation Value - this value is the currently specified boom angle limitation value for
Boom Down.
Current Crane Position - this value shown on the screen is the current crane position boom angle
value. It is the same value shown in the RCL screen. Note that in this example, the boom angle is at
the limit, and for that reason it would be seen highlighted in red.
Содержание Grove GRT880
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