Overload protection ”
OLP
”, warning signals
14
Technical description
Olsbergs hand controllers can provide
information about the pressure in cylin-
ders equipped with pressure sensors.
This information is linked directly to each
function.
The pressure is shown as a percentage of
the maximum pressure permitted, further-
more it also shows if a particular motion is
prohibited or if the crane is subject to over-
load protection, (OLP).
There are three types of OLP:
Crane-OLP: means that the crane has reach
maximum load.
Outrigger-OLP: means that one of the
outriggers of the crane or vehicle has reach
maximum load.
VSL-OLP: means that the stability limit of the
crane or vehicle has been reached.
Overload is shown on the hand controller’s
displays as follows.
Crane-OLP
Indicated by showing 100% for those func-
tions that have pressure sensors in the cylin-
ders. Any movement that would increase the
load is blocked.
(1)
Outrigger-OLP
Outrigger-OLP means that one of the out-
riggers has reached maximum load and a
symbol is shown in the centre display with
the actual outrigger crossed.
At outrigger-OLP this symbol is shown
irrespective of which menu is shown in the
centre display. Outrigger-OLP ”front left” or
”front right” are indicated at the same spot on
the symbol in the centre display.
VSL-OLP
VSL-OLP means that the stability limit of the
crane/vehicle has been reached and VSL is
indicated on the centre display.
If outrigger-OLP and VSL-OLP occur at the
same time, VSL is indicated in the same
symbol as the outrigger OLP.
At all types of OLP the crane/vehicle stops
and all levers must be moved to neutral posi-
tion before the crane/vehicle can be operat-
ed out of OLP position and the centre display
returns to normal.
Regardless of which menu is active Outrig-
ger – OLP will be shown. Here outrigger-OLP
”-mid left”.
Outrigger-OLP
”front left”/”front
right”
VSL-OLP
VSL-OLP
Outrigger-OLP”mid
left” occured at the
same time as
VSL-OLP.
1
Inner boom
at 100% load
Outer
boom
up is
blocked
Extension
out is
blocked
