Importance

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Abstract

An elevator system includes an elevator car, a hoistway with landing doors, a first sensor system generating position information indicating a position of the elevator car in the hoistway, a second sensor system generating position information indicating a position of the elevator car in the hoistway, and a hoisting machine moving the elevator car during elevator runs between the landing doors based on position information generated by the first and second sensor system. In case the elevator system detects that one of the first and second sensor systems has a fault, the elevator system is configured to control the hoisting machine to continue an elevator run to a landing door, if positioning data from the first or second sensor system for which no fault has been detected is available. This reduces the risk of entrapment for the passengers.

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First Claim