MacGregor’s K4 50-tonne grab crane comes with CC3000 control that enables new safety and efficiency features MacGregor has further developed its K4 crane range with the addition of a new version of its CC3000 crane control system. The control system allows for new advanced features such as active pendulation control and an anti-collision system. Active pendulation control Active pendulation control minimises unwanted movement of the grab, which is especially useful for less experienced drivers that could benefit from greater precision in their manoeuvres and faster positioning of the grab above the hoppers. Minimised pendulation of the grab can also increase overall operational speed and reduce stress in bearings, wires and sheaves. This feature is also available for cranes handling containers and general cargo. Anti-collision system The anti-collision system detects both static and moving obstacles, so both the bridge and the adjacent cranes in operation are protected from collision. There is a dynamic safety box around the cranes and the eccentric platforms, the anticollision system reduces the speed and eventually stops the crane if it is too close to adjacent cranes or the bridge. The system significantly
reduces the risk of severe damage to the cranes and the ship. MacGregor’s K4-HD cranes have a 50-tonne capacity at a 36m outreach, including the weight of the grab. An eccentric platform provides an additional 9m outreach, which delivers a substantial capacity for lightering operations. The crane operator has an excellent view of the cargo handling area from an extended, side-mounted cabin. A
clear view down into the cargo hold that is being lightered is valuable both from a safety and efficiency perspective. The cabin contains a display that provides all the necessary information about crane performance and cargo handling to the crane operator. This information is also available on a display in the ship’s office.
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