OPERATING PROCEDURES GRT655/655L OPERATOR MANUAL
4-72 Published 3-23-2020, Control # 654-04
Table 4-7 Screen Symbols
In addition to the symbols that can be highlighted by the
arrow functions, the following are shown on the screen:
Symbol Description
Lock Out symbol and Alarm/Warning symbol - These symbols will not appear if the WRL is configured
for only the Lock Out Function or only the Alarm/Warning Function. Standard cranes are configured
for only the Alarm/Warning Function. Cranes configured for both functions, Lock Out and
Alarm/Warning, give the operator the ability to toggle between these two symbols, which indicate the
selection for the Lock Out Function (top symbol) or the Alarm/Warning Function (bottom symbol). The
selection for this configuration is toggled with an OK button (2, Figure 4-40).
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 (2, Figure 4-40). 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 (2, Figure 4-40), 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.
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