Manitowoc Grove GRT8120, Operator'S Manual

Page: 175 / 448

Grove
Published 3-22-2021, Control # 702-02
4-45
GRT8120 OPERATOR MANUAL OPERATING PROCEDURES
4
• When each of the spin boxes is set to the correct value
or indication, then an Enter button can be used on the
OK in the screen. If the control system confirms this
boom configuration, then a check-mark appears below
the OK. Otherwise, the question mark shown under the
OK (as in Figure 4-45) will remain; in this case, the
operator should exit the screen and repeat an attempt to
enter the actual boom configuration.
Semi-auto Mode vs. Manual Mode
The pinned boom can also be controlled with a Manual
Mode. Although the Manual Mode allows some additional
capabilities, the Manual Mode still requires some automated
motions. The Manual Mode screen includes the same
schematic graphical representation of the boom, and it uses
the same dots indication for automated motions (as shown in
Figure 4-31), as well as the telescoping direction arrows for
operator control (as shown in Figure 4-32).
The following outlines differences between the Semi-auto
Mode and the Manual Mode:
• The Manual Mode screen does not show the final boom
configuration values (“target tele picture” or “actual tele
picture”). In Manual Mode, the operator requests lock
and unlock procedures and telescopes boom sections to
desired pinning locations without an initial indication of
the final destination. However, the control system
internally still creates such a final boom configuration for
the instance where the operator changes to the
Semi-auto Mode after using the Manual Mode. The
control system sets the final destination for all boom
sections not yet moved to 100%. Thus, when changing
from Semi-auto Mode (where the operator may have
entered 50-50-50-0-0-0) to Manual Mode (where only
boom sections T1, T2, and T3 were operated), and then
changing back to Semi-Auto Mode, the Semi-auto
screen can show 100-50-50-0-0-0 (thus the control
system automatically changed the destination of T1 from
50% to 100%). This is expected behavior. The operator
can use the Semi-auto screen to change the 100% back
to 50%, and in some cases, the boom can continue to be
operated (but in other cases, the boom may have to be
fully retracted first).
• The Manual Mode shows an expanded view of the
telescoping cylinder pinning mechanism with the same
unlock icons and a lock icon, as seen in Figure 4-46
(instead of the requested final boom configuration
values for the Semi-auto Mode). When one of the unlock
or lock icons becomes available to be selected (changes
from the basic gray color to the focus color), then the
operator can request the unlock command or the lock
command. The top unlock icon is for the boom section
unlocking, and at the proper time the lock icon would be
used to again lock the boom section (the lock icon will
become available as a command when the control
system allows it). The bottom unlock icon is for the
telescoping cylinder unlocking, and again at the proper
time the lock icon would be used to again lock the
telescoping cylinder (again the lock icon will become
available as a command when the control system allows
it). There is only one lock icon since the pinning
mechanism is designed to either unlock the boom
section or the telescoping cylinder (but not both at the
same time). In this manner, the boom configuration and
pinning locations are “built up” by the operator as the
boom is operated.
• In the Semi-auto Mode, the unlocking of the telescoping
cylinder and boom sections is entirely automated. And
when locking is completed in the Semi-auto Mode, the
joystick (or other control device) does not affect the
position of the telescoping cylinder (the joystick is used
to confirm the next command when there is a blinking
arrow). In the Manual Mode, the command buttons
indicate the unlocking and locking, and the joystick can
affect the position of the telescoping cylinder; however,
with the components already in a locked condition, the
position of the cylinder can only be slightly affected. But,
making slight adjustments to the position of the cylinder
can assist with the unlocking process.
Boom Configurator
There are many boom or pinning configurations available.
The Boom Configurator can assist with previewing these
boom configurations and making an appropriate selection.
This screen is used when the boom is fully retracted. Switch
on the telescoping mechanism, refer to
Enabling the
Telescoping Mechanism , page 4-31.
The Boom Configurator is selected from the menu system on
the ODM as shown in Figure 4-47. Once selected, the Boom
Configurator screen is shown (refer to Figure 4-48). This
screen allows lift plan information such as hook radius, hook
load, and boom length to be entered. The screen will then
present a table of possible boom configurations to select
from. The table will show the load chart based information for
the configurations, as well as an approximate time (in
seconds) to complete the telescoping to the boom
10254-8
FIGURE 4-46