SAFETY MONITORING DEVICE FOR A LIFT CAR

摘要

The invention relates to a safety monitoring device for a lift car (1) which can be moved in a lift shaft (A) by means of a traction drive (D) via a lift control system (9) and whose instantaneous position can be registered by means of a position registering device which supplies two position signals, produced independently of each other, in a predetermined time pattern, having two-channel evaluation of the position signals by means of a microprocessor (13a, 13b) in each case for location-dependent, instantaneous determination of the speed of the lift car (1) and for comparison with a predefined movement profile, it being possible for a trigger signal that can be output via a safety relay stage (19) to be generated if a predetermined instantaneous speed desired value is exceeded.