UTMOST CONTROL OF STABILITY CONDITIONSFassi has developed the FSC “Fassi Stability Control” systems, available in different executions specifically designed for each crane type, in order to best satisfy Machine Directive 2006/42/EC and the application of harmonized technical standard EN 12999:2011, which requires for cranes having a lifting capacity of at least 1000 kg or a lifting moment equal and above 40000 Nm the integration of vehicle stability control in the safety function carried out by the lifting moment limiting device.These systems differ according to crane models and respective configurations. In particular, the S (Super) version, featuring fully automatic management and installable exclusively on cranes equipped with (1) FX500 or FX800 electronic device, (2) RCH or RCS radio control, hydraulically-extendable outriggers, is a completely innovative product from an engineering and functional standpoint, and consequently worthy of a thorough and in-depth discussion.
New technological opportunities, innovative spirit and regulatory drive are the main factors that represent the cornerstones of the Fassi stability control system. This is why Fassi’s offer, in addition to satisfying new regulations issued by the European regulatory body (CEN), takes into account the various peculiar features of the range, offering a system with different executions depending on crane models. This electronic system significantly improves crane control conditions, thus making it easier to use the crane. By working with Fassi cranes under conditions of safety, you can be sure to have excellent use versatility combined with the best lifting capacity.
The FSC system automatically limits crane operation in the event that all conditions needed to ensure its stability are not satisfied: extension of the lateral supports and positioning of the outrigger rams. This is done through two devices: (3) the proximity sensor for the outrigger rams and (4) the micro-switch cable reel that detects the complete exit of the lateral extension support.
The operator is placed in the condition to monitor every passage. Information about crane status and the authorization to use the crane once stabilization has been achieved are shown on the radio control display and on the user panel display on the crane: (5) and (6).
CONTROL OF THE RE-ENTERED CONDITION OF OUTRIGGER SUPPORTS
In compliance with standard EN12999:2011, all Fassi cranes feature maintenance of the mechanical safeties of the lateral extension outrigger supports with manual extension for the fully retracted position, while for those equipped with hydraulic extension the mechanical stop is replaced by a sequence valve. The control of the re-entered condition of the lateral extension stabilizer supports is monitored by peripheral sensors that send back the signal to a display panel positioned in the driver’s cab by means of a visual and acoustic indication that they have been completely re-entered.
EASY READING OF STABILITY CONDITIONS ON A DISPLAY
The operator’s control of crane utilization conditions is facilitated by easy and quick reading, on the (5) display of the radio control and of the (6) user panel onboard the crane, of the activation levels of the moment limiting device in the two lateral areas of the vehicle.
Side detection is referable to the signalling plate affixed to the radio control pushbutton panel and nearby the outriggers distributor.
For the FSC/S version, depending on the work positions of the outriggers lateral extension supports and the tilting angle of the crane base, an automatic derating occurs in terms of crane performances, of activation the lifting moment limiting device and of working speeds.
CONTROL AS WELL AS IMPROVED EFFICIENCYCompared to other systems, the Fassi FSC/S version introduces more sophisticated safety management: it carries out a double stabilisation check by verifying the position of the outriggers lateral extension supports and of the base (7) tilting angle thanks to tilting sensor with double XY axis. As a whole, the system is highly versatile, and it always privileges and ensures the highest crane performances under conditions of total control.