1 - General description

The CCU-X system is a load limiter device for truck cranes based upon the reading of pressures inside the lifting jacks. Pressures are compared in real time with the limit thresholds settable by configurator, which represent the crane maximum moment capacity. The system includes a series of functions and controls listed below:

- management of allowed movements in case of activation of the moment limiting device in relation to the position of main boom position, second boom, jib, winch, measured by angle sensors;

- stabilizers and outriggers management using digital or analogic sensors;

- working areas management;

- failures and malfunctioning selfdiagnostics;

- management of the spool sensors of hydraulic distributor;

- CAN bus direct interface with Scanreco remote control;

- parameters configuration by special display or by PC.

The equipment is fitted with a graphic touch screen panel to show pressures, usage percentages and alarm messages.

2 - Main Features of the system

By connecting the spool sensors of the distributor maneuvers to the CCU-X card, the control unit activate or not the bypass valve based on the state of load of the crane. The thresholds are set depending on the position of the stabilizers and outriggers. The angle sensors in the second boom and in the jib are used to monitor the booms position depending on the load and to block the machine in case of overload, allowing only the activation of the maneuvers that bring the system in safety conditions. In case of Scanreco remote control installed in the system, the same maneuvers performed manually can be achieved by moving the levers of the portable unit. Through the CCU-X configurator, you can associate each lever to the correct maneuver, without modify the remote control software or configuration.