Clutch fail safe system

摘要

The present disclosure relates to a compressor (1) which comprises a pulley (2) for connection to a drive system and a magnetic clutch assembly (4) for connecting a drive shaft (5) to the pulley (2), such that the rotation of the pulley (2) is transferred to the drive shaft (5). The clutch arrangement (4) comprises an electromagnet (6), a hub (7) attached to the drive shaft (5) and an armature plate (8), The compressor (1) further comprises a plurality of rotation sensors (20), wherein at least a first of the plurality rotation sensors (20) is located within the compressor (1) so that it monitors the rotation of the armature plate (8) and hub (7), and at least a second of the plurality of the rotation sensors (20) is located within the compressor (1) so that it monitors the rotation of the pulley (2).