An elevator system inspection control system and method for switching between normal and inspection operating modes includes a safety chain series circuit having at least one shaft or door contact switch and an operating device in an elevator shaft. The operating device includes a changeover switch for switching between modes. The safety chain is closed to drive an elevator car by establishing a current path between an electrical power source and a motor. When interrupted, the safety chain interrupts the current path thereby stopping the car. The control system includes a manual switch outside the shaft and a control element. The safety chain is closed or interrupted by activating or deactivating the control element while the current path to the motor remains permanently interrupted until the manual switch is actuated when the changeover switch switches the elevator system from the inspection operating mode to the normal operating mode.
SAFETY SWITCHING SYSTEM AND METHOD FOR SWITCHING AN ELEVATOR INSTALLATION BETWEEN A NORMAL OPERATING MODE AND AN INSPECTION OPERATING MODE
2021-04-08
Patent
Elektronische Ressource
Englisch
IPC: | B66B Aufzüge , ELEVATORS |
Europäisches Patentamt | 2021
|Operating mode switching method and electronic device
Europäisches Patentamt | 2015
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