Abstract
Crane arrangement (2) for a vehicle (4), comprising a crane base (5) arranged to be mounted to the vehicle (4); a movable arm (6) connected to the crane base, the movable arm comprising a plurality of crane booms; a set of stabiliser legs (7) connected to the crane base (5); a crane manoeuvring unit (10) arranged to generate crane operation commands (12), based on received input (14) by an operator of the crane arrangement (2), and a crane controller (24) arranged to operate in a crane operation mode wherein it is configured to monitor and control movements of the movable arm (6) in response to operation commands (12) and based on a configuration of the set of stabiliser legs (7). The crane controller (24) is arranged to operate in a pre-operation mode, and that said crane arrangement (2) also comprises a pre-operation planning module (16), wherein the crane controller (24) is configured to communicate with said pre-operation planning module (16). The pre-operation planning module (16) is configured to determine a set of planning parameter values (18) related to a crane operation planned to be performed, and to determine a straight-line working distance (22), between said crane base (5) and a planned load position (26), and to communicate said determined set of planning parameter values (18), including said distance signal (28), to said crane controller (24). The crane controller (24) is configured to calculate a working condition (30), such as a maximum load or a reach for a defined load, of the movable arm (6) based upon said set of planning parameter values (18), and further to communicate said calculated working condition (30) to the pre-operation planning module (16) for review by the operator.