| 摘要 |
The invention relates to an elevator installation with at least one shaft, in which at least two cars disposed one above the other can be made to travel up and down, the shaft having a plurality of shaft doors and the cars respectively comprising at least one car door, and with a safety device for blocking the travel of the cars when the shaft doors or car doors are open. In order to develop the elevator installation in such a way that its transporting capacity can be increased and the cars hinder one another as little as possible, it is proposed according to the invention that the safety device has at least two independent safety circuits, each having at least one shaft door and/or car door associated with it, it being possible for the travel of at least one car to be blocked by means of the safety circuits. A method for controlling an elevator installation is also proposed.
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