Procedure and device for monitoring an electomagnetically applied brake

摘要

The method for the monitoring of an electromagnetically operated brake (1) has a coil (7) creating a magnetic field through which moves an armature plate (10). From the time variation of the coil current an activation point is determined which is representative for the movement commencement of the armature plate. The coil current for the activation point is compared with a predetermined first threshold value which is representative for a predetermined first closed state of the brake. Depending upon the output from this comparison a signal representative for the actual closed state of the brake is generated. An independent claim is included for a brake monitoring device.