When snag has happend motor speeds must be reduced to zero as fast as possible in order to avoid rapid damage of the system. For that reason fast closing brakes are needed. PINTSCH BUBENZER provides SB28.3 services brakes with ultra-fast setting BUEL® thrusters. Closing times of 36ms help to stop the motor rotation within 100 to 200ms. Due to the fast stopping of the motors the amount of energy that will elongate the wire ropes is very limited.
Fast setting emergency brakes additionally help to slow down. Key components like rope tension sensors (load pins) with special, ultra-fast amplifiers guarantee to recognize any overload condition within the shortest possible time. Fast reaction is the key. The BOSS® system combines fast electrical components (hard-wired) with one of the fasted mechanical brakes. The system is limiting the snag load to such a minimum that rope elongation will be within an acceptable range and further damage can be excluded.