Method and control unit for checking elevator system safety functions
US10703604B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2015 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | May 23, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system includes a control unit, a bus, a plurality of bus-nodes connected via the bus with the control unit, and a plurality of safety-state detection devices connected with the control unit via the bus-nodes. A method of commissioning the elevator system includes the steps: A) verification by the control unit of the safety-state detection means that are connected to the bus; B) checking of the functional capability of the safety-state detection means that are connected; C) checking by the control unit of the safety functions of the elevator system based on a change in state of a safety-state detection means; and D) release of the elevator system for a normal operation only after positive execution by the control unit of the steps A) to C), wherein the release is accompanied by a change in state of the control unit from an unsecured state into a secured state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.