NATIONAL CRANE
Published 11-01-2020 Control # 710-00
7-5
NBT60XL OPERATOR MANUAL
RATED CAPACITY LIMITER
7
RCL Capacity Lockout
— Continuous visual
and audible warning that an overload condition
exists. The following controls are locked out:
• Hoist Up (Main and Auxiliary)
• Boom Down
• Telescope Out
ATB Limit is Activated
— Continuous visual
and audible warning that a two-block condition
exists. The following controls are locked out:
• Hoist Up (Main and Auxiliary)
• Boom Down
• Telescope Out
General Warning
— Refer to MAIN Menu
option 3 “Diagnostics” screen to see the warning
that is active.
Slew Angle Limit
— The slew angle is
measured from the centerline of the bearing
with the boom in the boom rest to the present
boom position. This is to alert the operator of a
user set limit. For more information about
setting slew angle limits, see “Setting the Slew
Angle Limit” on page 7-14.
A positive slew angle is to the right side of the
boom rest +0.1
0
to +360
0
or +0.1° > angle >
180° negative slew angle is to the drivers side of
the boom rest from -0.0° to -180°.
Tip Height Limit
— The tip height is measured
from the ground to the tip of the boom. This
monitors the height of the boom tip to alert the
operator of a user set limit (assumes maximum
outrigger deployment). For more information
about setting tip height limits, see “Setting the
Tip Height Limit” on page 7-15.
RCL Boom Angle Limit
— The angle limit is
measured by the boom angle. This is to alert the
operator of user defined limits above or below
these settings. For more information about
setting boom angle limits, see “Setting the
Boom Angle Limit” on page 7-15.
Radius Limit
— The radius limit is measured
from the center of rotation to the hook block
location in the horizontal plane. This is to alert
the operator of a user set limit. For more
information about setting radius limits, see
“Setting Radius Limit” on page 7-15.
Table 7-3 RCL Screen Symbols (Continued)
Icon
Description
RCL WADS Limit
— The work area definition
(WADS) limit is measured as a straight line from
point A to point B anywhere in the work area.
This sets up a virtual wall that alerts the operator
of a user set limit. The WADS can be configured
with three virtual walls. For more information,
see “Setting the WADS Limit” on page 7-14.
Joystick
— Active settings of one or more of
the joysticks, current setting lower than 100%.
Joystick output can be configured in the Tools
menu. For more information, see “About
Adjusting Joystick Output” on page 7-17.
O/R Configuration Change
— Shown to
indicate that the O/R position has changed vs.
the previously configured setup. This is NOT an
RCL lockout condition. Buzzer sounds to
indicate this setup change (can be silenced).
O/R Setup Overridden
— Shown to indicate
that the operator has manually overridden the
sensor data of the current outrigger
configuration. This is NOT an RCL lockout
condition so no buzzer sounds or functions are
disabled.
Over Rear Operating Mode
— Shown when
crane is currently in the Over the Rear load
chart mode. If the crane is within the value
range for Over the Rear, the GREEN icon is
shown. If the crane is within 10° of inside limits
of these values, the icon is yellow.
CWT Removal Slew Position
— Shown to
indicate that the operator is approaching
(YELLOW) region where the CWT section(s)
can be pinned to the turret/box.
Counterweight Selection
— Highlighted in
blue, shows the selected amount of
counterweight. The icons displayed vary by
model.
Hoist Selection
— Shows the selected hoist
(main or auxiliary if equipped) highlighted in
blue. An inactive hoist is displayed as gray. If the
crane is not equipped with an auxiliary hoist,
only one hoist is displayed.
Hoist 1 (Main) Enabled
(If Equipped)
Hoist 2 (Auxiliary) Enabled
Hoist 1 (Main) Raise
(If Equipped)
Hoist 2 (Auxiliary) Raise
Table 7-3 RCL Screen Symbols (Continued)
Icon
Description
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