ELEVATOR, METHOD FOR CONTROLLING AN ELEVATOR
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United States of America Patent
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Issued Date -
Feb 1, 2024
app pub date -
Dec 22, 2021
filing date -
Dec 22, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
An elevator includes a shaft, a car movable in the shaft, a drive operatively connected to the car and by which the car can be moved, a brake, a plurality of shaft doors and a safety control system. The safety control system has a secure safety control unit of a first type and at least one secure safety control unit of a second type. The safety control unit of the first type and the at least one safety control unit of the second type are interconnected. The at least one safety control unit of the second type collects a state of any of the shaft doors. The safety control system is adapted such that the state of each of the shaft doors can be collected directly only by one of the safety control unit of the second type.
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