Self-monitoring for completely maintenance-free operation

By self-monitoring the system it is ruled out that, although mounted, the safety device may possibly not be working, and the situation is not noticed. 

Self-monitoring detects any loss of functionality within milliseconds in which case, the machinery immediately goes into an emergency stop state, the machine stops, and employees are no longer in danger. This eliminates the necessity for annual maintenance, adjustments and other costly periodic inspections.