42 The GS550 System
Basic Radius Parameters for a Lattice Crane
Jib mounting point
Head sheave
Jib offset angle
Jib length
Crane centre of
rotation
Boom base pin
Boom Length (menu 4C1)
The distance from the
boom base pin to the
head sheave centre
(Your measurement)
Sheave radius (menu 4C19)
(Your measurement)
Figure: Basic radius parameters for a lattice cran
Slew offset (menu 4C2)
The distance from the boom base pin to
the crane centre of rotation
If the boom base pin is behind the
centre of rotation this value will be
negative.
(Your measurement)
Sheave head length perpendicular (menu 4C17)
The distance from the head sheave centre to the
boom centreline
(Your measurement)
SkyAzúl, Equipment Solutions