LSI-Robway RCI-1550 LM, Instruction Manual, Page: 34 / 97

7.2.11.
Set Rigging Load Threshold item
Rigging the crane often requires that the boom be positioned outside of the normal operating
regions of the load chart. It is not generally safe practice for the crane to be placed in such
positions however, at times such actions are necessary. The “Rigging Load” value is set by the
system installer to allow the crane to be manoeuvred off of the load chart. This value represents
the highest load that can be seen by the system during a rigging operation. If the load on either
hook (or indeed, the combination of loads) exceeds the setting for this function code then rigging
mode is automatically disabled and the display will return to a normal operating mode thus
generally causing motion cut to the crane.
Setting this value to 0 will effectively disable the rigging mode operation. Any positive setting for
this value will allow rigging mode to be activated as long as the combination of loads does not
exceed the setting.
SET RIGGING LOAD
F24:
Current = 3
.00
Edit = 3
.50
hh:mm
The installer must satisfy themselves that any value entered here is
in accordance with the crane manufacturer or their agents.
7.2.12.
Correct Radius (Unladen boom) item
This function code item is only available for telescopic cranes.
This function code allows the installer to calibrate the system to account for unladen boom
deflection. As such it should only be used when the displayed load radius is less than the true
operating radius of the crane. In such a case the installer should measure the physical load radius
at a position where boom deflection is seen to have the maximum effect on the load radius.
Maximum boom deflection occurs when the boom is fully telescoped and is positioned at about 45-
60 degrees. On duties where the winches are both assumed to be reeved over the main boom
head it is necessary to calibrate only for the main winch (winch 1). However, when a jib is installed
it is possible to calibrate boom deflection both for the main boom head and for the head of the jib.
To calibrate, select the desired winch, fully extend the boom and position it for worst case
deflection. Measure the physical radius, confirm it is greater than the displayed radius, and then
enter it against the Unladen radius correction function code. Repeat this procedure for any winch
that is reeved over a job.
7.2.13.
Correct Radius (laden boom) item
This function code item is only available for telescopic cranes.
This function code allows the installer to calibrate the system to account for laden boom deflection.
As such it should only be used when the displayed load radius is less than the true operating radius
of the crane AND unladen correction has already been employed. In such a case the installer
should measure the physical load radius at a position where boom deflection is seen to have the
maximum effect on the load radius.