EN12999:2011 is the European harmonised Standard for loader cranes in accordance with health and safety requirements from the Machinery Directive. EN12999 offers guidance, specifies the minimum requirements for design, calculation, examination and testing of hydraulically powered cranes and their mounting on vehicles or static foundations.
The standard states that "For cranes with a rated capacity of 1000 kg or above, the stability of the vehicle shall be included in the safety function of the rated capacity limiter." NOTE Stability in this case means: Deployment of every stabilizer is monitored by the rated capacity limiter and the rated capacity is reduced or the crane is stopped, if not fully deployed. Penny Hydraulics PH Crane Range offers an LME04 + SCU safety system that complies with this standard.
Further information can be found on the written standard which can be purchased through the BSI website.