Patent ID: 11945691
Assignee: INVENTIO AG
Field: Handling (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 9:
10. A method for monitoring an integrity status of a suspension member arrangement of an elevator, the suspension member arrangement including at least a first suspension member and a second suspension member, each of the suspension members having electrically conductive cords, the method comprising the steps of:
establishing an electrical connection to the cords in each of the first and second suspension members with a plurality of input connectors and output connectors;
generating first and second alternating voltages being phase shifted by 180° with respect to each other from an alternating voltage generator arrangement;
using a voltage analyzer arrangement to analyze a neutral point voltage resulting from applying one of the first and second alternating voltages to the cords of the first suspension member and applying another of the first and second alternating voltages to the cords of the second suspension member, and superimposing the first and second alternating voltages transmitted through the cords;
wherein a first input connector and a second input connector of the input connectors are electrically connected to the alternating voltage generator arrangement and a first output connector and a second output connector of the output connectors are electrically connected to the voltage analyzer arrangement;
wherein the first input connector and the first output connector establish a first circuitry to which the first alternating voltage is applied via the first input connector to a first end of at least some of the cords in the first suspension member, the first alternating voltage being transmitted through all of the cords of the first suspension member and the first output connector to the voltage analyzer arrangement; and
wherein the second input connector and the second output connector establish a second circuitry to which the second alternating voltage is applied via the second input connector to a first end of at least some of the cords in the second suspension member, the second alternating voltage being transmitted through all of the cords of the second suspension member and the second output connector to the voltage analyzer arrangement.