Safety circuit for an elevator system
AssigneeInventio AG
InventorIvo Lustenberger
Life of this patent
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Abstract
A safety circuit for an elevator system includes a first circuit having a plurality of switching contacts and a second circuit having a plurality of switching contacts. The switching contacts of the first circuit are connected in series, and the switching contacts of the second circuit are connected in parallel. Each switching contact of the first circuit is associated with a different switching contact of the second circuit. The switching contacts that are associated with each other are in opposite switching states.
Claims14
A safety circuit for switching between a safe operation state of an elevator system and a safe idle state of the elevator system comprising:
- a first circuit having a plurality of switching contacts;
- and
- a second circuit having a plurality of switching contacts, wherein the switching contacts of the first circuit are connected in series and the switching contacts of the second circuit are connected in parallel, at least one switching contact of the first circuit being associated with a switching contact of the second circuit, switching states of the associated switching contacts being in opposite switching states, and the first circuit and the second circuit being responsive to safety elements of the elevator system for controlling the switching between the safe operation state and the safe idle state of the elevator system.
An elevator system having safety elements and a safety circuit responsive to the safety elements for switching between a safe operation state of the elevator system and a safe idle state of the elevator system, the safety circuit comprising:
- a first circuit having a plurality of switching contacts;
- and
- a second circuit having a plurality of switching contacts, wherein the switching contacts of the first circuit are connected in series and the switching contacts of the second circuit are connected in parallel, at least one switching contact of the first circuit being associated with a switching contact of the second circuit, switching states of the associated switching contacts being in opposite switching states, and the first circuit and the second circuit being responsive to the safety elements of the elevator system for controlling the switching between the safe operation state and the safe idle state of the elevator system.
Dependencies are inferred from the claim text.