Manitowoc National Crane NBT50 Series, Operator'S Manual

Page: 138 / 158

RATED CAPACITY LIMITER NBT50 OPERATOR MANUAL
7-4
Published 03-23-2018 Control # 243-14
RCL Operating Mode Screen (Sample)
• RCL Capacity Warning - Continuous visual and
a u d i b l e w a r n i n g t h a t a o v e r l o a d c o n d i t i o n i s
approaching. The operator can continue with extreme
caution.
• 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
RCL Override Warning
The RCL override bypasses the RCL for both overload and
ATB alerts.
• RCL Override Warning (Red) - Indicates that the
RCL is bypassed by the operator. Use extreme caution
when the RCL is bypassed.
• ATB Override Warning (Red) - Indicates that the
ATB is bypassed by the operator. Use extreme caution
when the ATB is bypassed.
• Horn Silence - Indicates the RCL warning horn is
temporarily disabled for a period of 15 seconds per
push. The horn silence button icon will be shaded when
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.
A positive slew angle is to the right side of the boom rest
+.1
0 to +360 0
.
• 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).
• RCL 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.
• Radius Limit - The radius limit is measured from
the center of rotation to the center of the load. This is to
alert the operator of a user set limit.
• 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.
• General Warning - refer to MAIN Menu option 3
“Diagnostics” screen to see the warning that is active.
• Joystick - Active settings of one or more of the
joysticks, current setting lower than 100%.
• 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.
7623-20
DANGER
Use extreme caution when operating the crane with the
RCL system overridden. Use of the RCL system override
to operate the crane in a non-permissible range can result
in death or injury to personnel and/or damage to
equipment and property.
!