ELEVATOR WITH A MONITORING ARRANGEMENT FOR MONITORING AN INTEGRITY OF SUSPENSION MEMBERS

Elevator (1) comprising a suspension member arrangement (9) comprising at leasta first and a second suspension member (11', 11''), each comprising electrically conductive cords (23) and a monitoring arrangement (17) for monitoring an integrity status of the suspension member arrangement (9) is proposed. The monitoring arrangement (17) comprises: -an alternating voltage generator arrangement (29) for generating first and second alternating voltages phase shifted by 180°; -a plurality of input connectors (37) and output connectors (39), each for establishing an electrical connection to cords (23) comprised in one of the suspension members (11); -a voltage analyser arrangement (31) for analysing a neutral point voltage resulting upon applying each one of the first and second alternating voltages to cords (23) of one of the first and second suspension member (11', 11''), respectively, and after transmission of the first and second alternating voltages through the cords (23), and superimposing the transmitted first and second alternating voltages. For the first suspension member (11'), a first input connector (37') and first output connector (39') establish a first circuitry in which the first alternating voltage is applied via the first input connector (37') to a first end region (45) of at least some of the cords (23) comprised in the first suspension member (11') and, after transmission of the alternating voltage through all cords (23) of the first suspension member (11'), is further transmitted via the first output connector (39') to the voltage analyser arrangement (31). Same applies for the second suspension member (11''). Accordingly, each suspension member (11) forms part of a single circuitry for connecting the alternating voltage generator arrangement (29) by either the cords of the suspension member (11) to the voltage analyser arrangement (31). A multiplexer arrangement (33) may be implemented for enabling selectively testing each pair of two suspension members (11). Cette invention concerne un ascenseur (1) comprenant un agencement d'éléments de suspension (9) comprenant au moins des premier et second éléments de suspension (11', 11''), comprenant chacun des câbles conducteurs (23) et un agencement de surveillance (17) pour surveiller un état d'intégrité de l'agencement d'éléments de suspension (9). L'agencement de surveillance (17) comprend : -un agencement générateur de tension alternative (29) pour générer des première et seconde phases de tensi