Grove Published 3-23-2020, Control # 654-04 4-69
GRT655/655L OPERATOR MANUAL OPERATING PROCEDURES
Table 4-6 Screen Symbols
In addition to the symbols that can be highlighted by the
arrow functions, the following is 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 - this symbol is used to enable or disable the limitation. 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.
Limitation Value - this is the current limitation value (the RCL tip height; which is a distance above a
ground level). If the limitation is enabled, and this symbol on the screen is highlighted (orange color),
after using the OK button, the value can be changed to be higher or lower with the Up Arrow and Down
Arrow function on the display or jog dial. The OK button (2, Figure 4-40) is used to begin and complete
the value entry. It can also be changed by accepting the current crane position (see next symbol). If
the limitation value is below the minimum allowed, a fault will be generated, and a fault symbol will
appear on the display.
Accept Crane Position symbol - If the limitation is enabled, this symbol allows the acceptance of the
current crane position to be the limitation value (current tip height becomes height limitation). If this
symbol is highlighted (as shown here with orange background), and the crane position is accepted
with an OK button, then the value shown in the Limitation Value is updated to be the current crane
position. If the limitation value is below the minimum allowed, a fault will be generated, and a fault
symbol will appear on the display.
Symbol Description
Current Crane Position - this value shown on the screen is the current crane position tip height value.
It is the same value shown in the RCL screen.
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