Grove Published 3-25-2020, Control # 595-10 3-31
GRT8100 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
CCS WORKING RANGE LIMITER (WRL)
Introduction
The Working Range Limiter (WRL) is a feature of the crane
control system that allows for the definition of obstacles or
limits for crane operation. This definition can then be used by
the crane control system to assist the operator with
identifying the motion of crane with respect to these
obstacles and limits.
In addition, if the WRL is configured to do so, the crane
functions can be affected to slow and stop with respect to
limitations; this behavior is referred to as lockout.
The following limitations are available for the WRL:
• Height Limitation: boom height limit can be defined for a
maximum boom elevation.
• Boom Up/Down Limitation: boom up/down limits can be
defined for a minimum and maximum boom angle.
• Radius Limitation: boom radius limits can be defined for
minimum and maximum radius working zones.
• Swing Limitation: swing angle limits for swing left and
swing right directions can be defined.
• Virtual Wall Limitation: up to five virtual walls can be
defined to be jobsite objects or warning zones.
NOTE: The Working Range Limiter feature is an operator
aide, it can provide enhanced jobsite awareness.
However, it is not expected to be the sole source of
this awareness, and all appropriate techniques
such as other personnel providing visual guidance
to the crane operator are to be employed. In
addition, when the lockout capability is utilized,
crane functions are expected to be used with the
same caution as if the lockout 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 lockout of the swing function. As
such, swing speeds are to be no more than 1
degree of swing per second.
Turning off the power to the control system disables any
WRL limitations.
WRL Limitations
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. Once the limitation is
enabled, then it can be DEFINED (in terms of specific
angles, locations, etc.). This is also done with the screen and
buttons on the operating display, as well as usually operating
the boom to define particular locations. With the limitation
enabled and defined, the control system can then provide
the needed feedback and warnings. When the crane is in
such a position to cause warning, then the WRL limitation is
considered to be ACTIVE. In summary, then, the use of the
WRL involves steps to enable the limitation, define the
limitation, and then limitations can become active once
warnings are generated for the operator (based on the crane
position).
When any limitation is enabled (but none are active), the
Main Screen shows an indicator. Figure 3-18 shows the
Main Screen with the indicating symbol, which has a
green-colored background, and the symbol is highlighted
with a circle. If no limitations are enabled, then this same
symbol is shown, but without the green-colored background
(thus appearing similar to other non-highlighted symbols on
the screen).
To Next Page
Loading...
Need help?
General
