Elevator safety circuit including non forced guided relay

An elevator safety circuit includes a plurality of relays; safety logic for monitoring status of the plurality of relays, the safety logic generating an output signal in response to the status of the plurality of relays; and a processor controlling operation of an elevator drive in response to the o...

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Bibliographische Detailangaben
Hauptverfasser: Magda, Richard F, Horbrügger, Hebert, Richter, Jochen Thomas, Dehmlow, Marvin
Format: Patent
Sprache:eng
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Zusammenfassung:An elevator safety circuit includes a plurality of relays; safety logic for monitoring status of the plurality of relays, the safety logic generating an output signal in response to the status of the plurality of relays; and a processor controlling operation of an elevator drive in response to the output signal; wherein at least one of the relays is a forced guided relay and at least one of the relays is other than a forced guided relay.