User's Manual

GM550 v1043 FCC-IC.doc Revision 2 47
Advanced Radius Settings (Reference)
On most cranes, the radius parameters described above should be sufficient to calibrate accurate
radius indication. When the GS550 has been programmed with rated capacity charts additional
radius parameters may facilitate fine tuning radius indication.
Lattice Extension
Offset Angle
(LExt Off)
Boom Length
Extensions, two possibilities:
1) Manual Length: offset always zero degrees.
2) Lattice Extension Length: offset angle must be adjusted.
Parameter name in radius settings menu: (LExt Len)
Boom Top Length
(BTop Len)
Boom Top Offset
(BTop Off)
With the most common Sheave Head:
(Sh.Len Pr) distance perpendicular to boom centerline: arrow D1
(Sh.Len Pl), distance parallel to last boom section = 0
D2
D3
S
l
e
w
O
ff
set
.
Boom top
Length & offset
BTop Len
BTop Off
Lattice Extension Length
& offset
L
Ext Len: LExt O
ff
Main Boom
Jib Mounting Point Parallel &
perpendicular
JibMntPtPl JibMntPtPr
Fixed Jib Length & Offset
Jib Length
Jib Offset
Luffing Jib Length
(center sheave to
center sheave)
LJib Length
Boom Heel Pin
Angle sensor
Angle sensor
Boom length
includes boom top
Lattice Extension
Length
(LExt Len)
D1
Special top sheaves such
as rooster sheaves:
(Sh.Len Pr) distance
perpendicular to boom
centerline: dimension D2
(Sh.Len Pl), distance
parallel to last boom
section: dimension D3