Automatic train stop (intermittent) PZ 80R with operating program PZB 90
With the intermittent automatic train stop system PZ 80R (operating program PZB 90) trackside components (resonant circuits) interact with detecting equipment on the train. By means of inductive coupling and three frequencies ((500, 1000, 2000 Hz) the system prevents the train from passing signals at danger as well as from exceeding the allowed maximum speed on the open line and on low-speed restricted sections.