Electronic safety system for an elevator having a bus and safety circuit
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United States of America Patent
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Apr 9, 2013
Grant Date -
Feb 17, 2011
app pub date -
Aug 13, 2010
filing date -
Aug 14, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An electronic safety system for an elevator with a controller, which is coupled to a motor for driving an elevator car, a safety controller and a bus by means of which the controller can communicate with bus nodes which receive data from at least one sensor. The controller can communicate with a safety circuit which can be put into an open state by the safety controller, as a result of which the motor is shut off, and the safety circuit has a means which notifies the controller of shut-off of the motor, or shut-off of the motor can be detected by the controller on the basis of the data transmitted from the bus nodes to the controller.
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