A method for monitoring a condition of a belt-shaped rope of an elevator, which rope is connected with one or more elevator units of an elevator, includes monitoring lateral positions of successive rope locations, which rope locations pass during use of the elevator via a monitoring zone located in proximity of a crowned rope wheel around which the belt-shaped rope is arranged to turn; gathering lateral position data of the belt-shaped rope, which lateral position data indicates lateral positions of several successive rope locations of the rope at the monitoring zone; analyzing the lateral position data; detecting characteristics in the lateral position data indicating damaged rope; and triggering one or more predefined actions if characteristics indicating damaged rope are detected. An arrangement and an elevator, which implement the method, are also disclosed.

A method for releasing safety gears of an elevator car or a counterweight of an elevator system, the elevator system including a stalling detector coupled to compensation roping associated with the elevator car and the counterweight and configured to detect an increased rope tension, includes preventing a stalling indication from the stalling detector during a rescue operation; and moving the elevator car in order to release the safety gears.

A system to monitor and analyze a multi-strand rope includes a rope data sensor to collect data regarding the physical state of the rope; one or more usage sensors to collect data regarding the usage of the rope; a position measurement device to measure the position of the rope; and a computer system connected to the rope data sensor, the one or more usage sensors and the position measurement device to correlate the collected data and position measurement to give real-time data on the status of the rope at one or more sections.

Modern elevators involve a plurality of ropes and wheels for ropes in a variety of different functions related to the operation and security of an elevator. The wearing of a rope and a wheel may be inspected by scanning a profile of a wheel or ropes on a wheel. When a rope or a wheel is worn the profile will be lower than in the normal situation. Depending on the difference to the normal situation an appropriate action may be taken.

A deterioration state of load bearing capacity in an elevator suspension member having a plurality of electrically conductive cords is detected by: providing a multi-phase alternating current circuitry including electrically conductive legs; applying at least one phase of a multi-phase alternating current to at least one of the cords electrically connected to one of the legs; applying at least another phase of the current to at least another cord and at least one resistor electrically connected to at least another leg; measuring an electric indicator current being at least one of a net sum of all phases of the current and an electric bypass current through a neutral wire being connected in parallel to the circuitry, wherein a peak current in each phase is shifted by a phase angle with respect to a peak current in another phase; and determining the deterioration state based on the measured indicator electric current.

A method for operating an elevator installation uses an elevator control device, wherein, by at least one sensor allocated to the elevator installation and by a sensor signal obtainable therefrom, a state of the elevator installation is automatically detected by the elevator control device. In dependence on the detected state, the elevator control device automatically generates an activation signal to automatically activate a remote signaling element.

A system for determining stiffness of an elevator system tension member includes a landing floor indicator to transmit a landing floor signal of an elevator car to a stiffness estimator, and a car position encoder to transmit a car position signal of the elevator car in a hoistway to the stiffness estimator. A machine position encoder transmits a machine position signal to the stiffness estimator. The tension member is operably connected to the machine to move the elevator car along the hoistway. A load weight sensor is located at the elevator car to transmit a load weight signal of the elevator car to the stiffness estimator. The stiffness estimator utilizes at least the landing floor signal, the car position signal, the machine position signal and the load weight signal to calculate an estimated stiffness of the tension member.

A system for monitoring wear of a tension member, having: a hoistway; a car; an elevator motor having a first sheave; a processor configured to: access historical data including at least one of prior usage data of the tension member and historical traffic pattern of the car; track real time data indicative of bends of segments of the tension member; determine from historical data and real time data a health condition of the segments of the tension member; issue a service alert when bends in one or more segments of the tension member exceeds a threshold; and control the car to transport an inspector to one or more locations along the hoistway that provide for visual inspection of at least one segment of the one or more segments that has a greater amount of bends relative to another segment of the one or more segments.

There is provided a mounting tool for an elevator rope tension measurement device, the mounting tool being capable of preventing the rope tension measurement device from interfering with a rope disposed adjacently to a rope that is a measurement target. A mounting tool for an elevator rope tension measurement device includes: a first holding body configured to hold a rope of an elevator; a second holding body configured to hold a rope tension measurement device that measures a tension of the rope; and a connecting body configured to connect the first holding body with the second holding body so as to dispose the rope tension measurement device at a position away from the rope.

The invention relates to a method of monitoring condition of a rope of an elevator arrangement, the method comprising monitoring by a computer system an amount of bendings of each discretization point and/or of each discretization portion around a rope wheel during elevator use, the amount of bendings of each discretization point and/or of each discretization portion being indicated by a bending value associated with the discretization point and/or discretization portion in question; wherein each said discretization point is a point within a rope portion extending between successive contact positions of the rope, and respectively, each said discretization portion is a rope portion extending between successive contact positions of the rope; and wherein said contact positions of the rope include the positions of the rope, per each landing, which are contacted by rope wheels when the car is at the landing. The invention also relates to an elevator arrangement implementing the method.