An elevator system drive includes: an electric machine: a first converter electrically connected to an alternating current source and the electric machine: a drive controller controlling the drive: a drive safety circuit unit electrically connected to a safety circuit of the elevator system, to a controller of the elevator system, and to the drive controller; and at least one mechanical brake that is closed by a brake closing command from the elevator system controller. The drive safety circuit unit operates in a first operating state wherein it transmits an emergency stop command coming from the elevator system safety circuit directly and without delay to the first converter, and operates in a second operating state wherein it relays a modified emergency stop command coming from the elevator system safety circuit, with a delay, to the first converter to ensure safe braking of the elevator system even if the mechanical brakes fail.


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    Title :

    ANTRIEB EINER AUFZUGSANLAGE


    Additional title:

    DRIVE OF AN ELEVATOR SYSTEM
    MÉCANISME D'ENTRAÎNEMENT D'UN SYSTÈME D'ASCENSEUR


    Contributors:

    Publication date :

    2022-03-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    German


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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