3 Description of the
Ruthmann-Steiger
BA.GB.12-27409-05-07-FTA-jr
3.3.8 Limitation of outreach depending on the angle of rotation
The Ruthmann-Steiger is equipped with a load moment limitation (LML)
which restricts the lateral outreach by a locking device depending on boom
position, extended telescope and the actual load on working cage. Shortly
before this limitation is triggered, all the movements that would increase the
load moment are automatically steadily slowed and switched off when the
load moment limitation (LML) is reached. At switch box on cage the warn-
ing lamp „LML Cut-off“ additionally illuminates. Then only movements are
possible which will not exceed the permissible load moment.
In addition to the „telescope out“ and „boom down“ movements, in some
areas this also affects the „rotate boom“ movement. If the permissible load
moment is reached by a rotating movement of the boom, then this move-
ment will also be disconnected. To rotate it further in the direction for dis-
connection anyway, first another movement that reduces the load moment
has to be carried out.
In addition to the limitation of the load moment, the telescopic extension of
the boom is also locked by the telescopic extension limitation. Depending
on the boom’s angle of elevation and the cage load, the telescope can be
extended to certain maximum boom lengths. The „telescope out“ move-
ment is disconnected when the extension limitation is reached. As with the
load moment limitation, the warning lamp „LML-cut-off“ also lights up on
the switch box for the working cage. No further telescopic extension is then
possible.
Depending on the instance of use, either the load moment limitation or the
telescopic extension limitation might be triggered first.
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