Manitowoc Grove GRT8120, Руководство оператора

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Grove
Published 3-22-2021, Control # 702-02
4-107
GRT8120 OPERATOR MANUAL OPERATING PROCEDURES
4
Working Range Limiter Menu Group
Introduction
The Working Range Limiter (WRL) is a feature of the Crane
Control System, located on the ODM, that allows the
operator to define boundaries or limits for crane operation.
With obstacles and limits accurately defined, the WRL will
aid the operator in identifying when the boom and/or load is
nearing an obstacle by giving both visual and audible alerts.
Refer to Table 4-8 – WRL Alarm Characteristics for alarm
positions.
In addition, when the WRL Lock-Out Function is enabled,
crane functions are expected to be used with the same
caution as if the lock-out capability was not present. In
particular, it must be noted that the swing function has a
coasting or free-swing characteristic that will not be affected
by the slow-down and lock-out of the swing function. As
such, swing speeds are to be no more than 1 degree of
swing per second. Again, refer to Table 4-8 – WRL Alarm
Characteristics for swing position limitations and alarms.
The WRL Menu Group (1, Figure 4-108) and sub-menu (2
thru 6) allows the operator to set limits on the location of the
boom.
The following limitations are available under the WRL Menu
Icon (1, Figure 4-108) as noted below. The number next to
the limitation indicates the Menu Limitation Icon reflective of
that group as shown in Figure 4-108.
• Swing Angle Limitation Icon (2): Swing angle limits for
swing left and swing right directions can be defined.
• Boom Angle Limitation Icon (3): Boom up/down limits
can be defined for a minimum and maximum boom
angle.
• Boom Height Limitation Icon (4): Boom height limit can
be defined for a maximum boom elevation.
• Working Radius Limitation Icon (5): Working radius limits
can be defined for minimum and maximum radius
working zones.
• Virtual Wall(s) Limitation Icon (6): Up to five virtual walls
can be defined to be jobsite objects or warning zones.
WRL Limitations Overview
For each of the limitations, the limitation must first be
ENABLED within the WRL feature of the Crane Control
System software. This is done with particular screens and
buttons on the Operating Display Module (ODM). Once the
limitation is enabled using Item 3 in Figure 4-112, then it can
be DEFINED (in terms of specific angles or locations). This is
CAUTION
The WRL is an operator aid and should not be relied upon
in place of good operating practice. The crane functions
can be affected to slow and stop with respect to
limitations. This behavior is referred to as lock-out. A
qualified signal person to observe and direct the lifting
operation should be used when necessary.
DANGER
For standard cranes NOT equipped with the WRL
Lock-Out Function, the WRL System is an audio/visual
indicator only. The system will not stop the movement of
the crane when the limit is reached. The operator must
continue to control and stop the movement of the crane
when alerted by the WRL Indicator
.
If the crane’s WRL is configured with the Lock-Out
Function, the crane functions can be affected to slow and
stop with respect to the programmed limits.
When the Lock-Out feature of the WRL System is
enabled, the operator must continue to operate the crane
functions with caution.
Item Description
1 WRL Menu Group
2 WRL Swing Angle Limitation
3 WRL Boom Angle Limitation
4 WRL Boom Height Limitation
5 WRL Working Radius Limitation
6 WRL Virtual Walls Limitation
CAUTION
Turning off the power to the control system disables any
WRL limitations. While powering OFF the control system
will disable all WRL limitations, the limitation values (for
example, Swing Angles) will be retained across power
cycles.
FIGURE 4-108
9478
1 2 3 4
5
5
5
5
6
WRL Menu Group