It is desired that elevators are not operated when the brake is not completely released. Thus, the disengaging of brakes must be monitored or guaranteed otherwise. For providing guaranteed opening, the current for opening the brake is determined and then an additional current is provided to the brakes in order to guarantee the opening. The current for opening the brake is determined by doing a test sequence for each brake individually. In the test sequence, one brake is used to hold the elevator. Then, a momentum is applied to the elevator for moving the elevator car. The current is determined by increasing the current to the engaged brake gradually until the elevator moves. When the movement is detected, the current value is stored. When the elevator is operated regularly, the additional current is added to the stored value.


    Access

    Download


    Export, share and cite



    Title :

    Elevator brake release monitoring


    Contributors:
    KATTAINEN ARI (author) / STOLT LAURI (author)

    Publication date :

    2022-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



    ELEVATOR BRAKE RELEASE MONITORING

    KATTAINEN ARI / STOLT LAURI | European Patent Office | 2017

    Free access

    ELEVATOR BRAKE RELEASE MONITORING

    KATTAINEN ARI / STOLT LAURI | European Patent Office | 2017

    Free access

    Elevator brake release monitoring

    KATTAINEN ARI / STOLT LAURI | European Patent Office | 2016

    Free access

    ELEVATOR BRAKE RELEASE MONITORING

    STOLT LAURI / KATTAINEN ARI | European Patent Office | 2018

    Free access

    Elevator brake release monitoring

    KATTAINEN ARI / STOLT LAURI | European Patent Office | 2021

    Free access