Abstract: The invention relates to a multicar elevator system, comprising: a plurality of elevator cars; an elevator shaft system; the plurality of the elevator cars and the elevator shaft system comprising a plurality of elevator components; a controller; the multicar elevator system further comprising: an elevator maintenance system configured to: receive the measurement data; determine the operational condition of the respective elevator component; and generate a maintenance signal for the at least one elevator component, a maintenance is scheduled in accordance with the operational condition of the respective at least one elevator component before a failure of the at least one elevator component. The invention also relates to a method and a computer program product.

Abstract: The invention relates to an elevator system comprising at least two elevator cars adapted to travel in respective separate hoistways of the same building. The at least two elevator cars have at least two different rated speeds comprising lowest rated speed and a rated speed higher than the lowest rated speed. At least each said elevator car with the rated speed higher than the lowest rated speed is provided with an electronic overspeed monitoring equipment configured to stop the movement of the elevator car, if the speed of the elevator car meets an overspeed threshold. The overspeed threshold is decreasing towards at least one end terminal of the hoistway. Each of said separate hoistway of the building has a bottom end terminal space with a substantially equal height and/or a top end terminal space with a substantially equal height.

Abstract: The invention relates to a conveyor for passengers and/or goods, the conveyor comprising at least one linear electric motor formed by linear stator beams with stator poles being located in a fixed correlation to an environment, and at least one mover co-acting and moving along the stator beams, the stator beams comprising at least a first stator beam extending in a first movement path in a first direction of the passenger conveyor and at least a second stator beam extending in a second movement path in a second direction of the passenger conveyor, wherein the first direction and the second direction are different directions, selected from the group of horizontal, inclined and vertical direction, and which mover is adapted to face the respective stator poles of the stator beam, wherein the mover has at least one winding arranged to co-act with the stator poles; the linear motor being controlled by a motor drive, which is controlled by a drive control.

Abstract: The invention relates to a method for operating an elevator system. The method comprises receiving a request to drive an elevator car to a destination and generating an elevator car motion profile to serve the received request. The elevator car motion profile comprises at least the following motion parameters of the elevator car: acceleration, maximum speed, and deceleration. At least one of the maximum speed of the elevator car and the deceleration of the elevator car in the generated elevator car motion profile is defined on the basis of the destination. The invention relates also to a processing unit and an elevator system configured to perform the method at least partly.

Abstract: The invention relates to an operational entity for controlling movement of a plurality of elevator cars of a multicar elevator system. The operational entity has a user interface comprising a first input element and a second input element. The user interface is configured to: generate, on the basis of the first input element, an indication of selection of at least one elevator car from among a plurality of elevator cars to be moved; and generate, on the basis of the second input element, one or more control signals indicative of a request to control the movement of the selected at least one elevator car to a predefined direction. The invention relates also to a multicar elevator system comprising an operational entity.

Abstract: The invention relates to a method for controlling movement of two or more elevator cars of a multicar elevator system. The method comprises: selecting manually via a user interface of an operational entity an elevator car from among a plurality of elevator cars to be moved and controlling movement of one or more other elevator cars from among the plurality of the elevator cars away from a driving area of the selected elevator car. The invention relates also to a multicar elevator system and an operational entity implementing at least portions of the method.

Abstract: A method for allocating an elevator in an elevator system constructs passenger batch size distributions for each pair of floors in a building based on passenger batch journeys, each passenger batch journey defining at least the origin and destination floor of the journey, the number of passengers relating to the journey and the time of the journey; receives a call for an elevator; estimates the number of passengers waiting behind the call based on the passenger batch size distributions; and allocates the call to an elevator being able to serve the estimated number of passengers.

Abstract: According to an aspect, there is provided an elevator system comprising an elevator control apparatus configured to operate elevator cars in two parallel vertical trajectories, wherein the elevator cars are configured to move in a closed loop up along a first vertical trajectory and down along a second vertical trajectory, The first vertical trajectory and the second vertical trajectory are at least partly shared by a first group of elevator cars and a second group of elevators cars, wherein the first group and the second group at least partly are configured to operate at different maximum speeds.

Abstract: An elevator arrangement includes a plurality of elevators in a building, which plurality includes a plurality of zoned elevators moving in an elevator hoistway, which have different ranges of movement of the elevator car in the building to each other, and which zoned elevators each have a top limit and a bottom limit of the range of movement of the elevator car, to above the top limit and to below the bottom limit of which range of movement travel of the elevator car of the zoned elevator in question is prevented. The vertical location, in relation to the building, of the top limit and/or bottom limit of the range of movement of the elevator car of each aforementioned zoned elevator can be changed.

Abstract: A brake controller, an elevator system and a method for performing an emergency stop are provided. The brake controller includes an input for connecting the brake controller to the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator, an output for connecting the brake controller to the electromagnet of the brake, a switch for supplying electric power from the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator via the output to the electromagnet of a brake, and also a processor with which the operation of the brake controller is controlled by producing control pulses in the control pole of the switch of the brake controller.

Abstract: A drive device of an elevator includes a DC bus, a motor bridge connected to the DC bus for the electricity supply of the elevator motor, a control circuit with which control circuit the operation of the motor bridge is controlled by producing control pulses in control poles of high-side and low-side switches of the motor bridge, a brake controller, which comprises a switch for supplying electric power to an electromagnetic brake, a brake control circuit, with which the operation of the brake controller is controlled, an input circuit for the safety signal to be disconnected/connected from outside the drive device, drive prevention logic and brake drop-out logic connected to the input circuit and configured to prevent the passage of control pulses to the control poles of the high-side and/or low-side switches when the safety signal is disconnected.

Abstract: The invention relates to a safety arrangement of an elevator, which includes sensors configured to indicate functions that are critical to the safety of the elevator, and also a safety circuit, with which the data formed by the sensors indicating the safety of the elevator is read. The safety arrangement includes a drive device including a control circuit of a motor bridge, an input circuit for a safety signal that can be disconnected/connected from outside the drive device, and also drive prevention logic, to prevent the passage of control pulses to the control poles of high-side and/or low-side switches of the motor bridge when the safety signal is disconnected. The safety circuit brings the elevator into a state preventing a run by disconnecting the safety signal and removes the state preventing a run by connecting the safety signal.

Abstract: According to an example embodiment there is provided a method for allocating an elevator in an elevator system. The method comprises constructing passenger batch size distributions for each pair of floors in a building based on passenger batch journeys, each passenger batch journey defining at least the origin and destination floor of the journey, the number of passengers relating to the journey and the time of the journey; receiving a call for an elevator; estimating the number of passengers waiting behind the call based on the passenger batch size distributions; and allocating the call to an elevator being able to serve the estimated number of passengers.

Abstract: An elevator system and a method for monitoring the operating condition of an elevator system are provided. In the method, samples are taken of the control signal of the drive device of the elevator, from the series of samples taken a frequency component is determined that is characteristic to the part of the elevator assembly driven with the drive device, and also the operating condition of the part of the elevator assembly is monitored on the basis of the determined frequency component.

Abstract: A drive device of an elevator includes a DC bus, a motor bridge connected to the DC bus for the electricity supply of the elevator motor, which motor bridge includes high-side and low-side switches for supplying electric power from the DC bus to the elevator motor when driving with the elevator motor, and also from the elevator motor to the DC bus when braking with the elevator motor, a control circuit of the motor bridge, with which control circuit the operation of the motor bridge is controlled by producing control pulses in the control poles of the high-side and low-side switches of the motor bridge, a brake controller, which comprises a switch for supplying electric power to the control coil of an electromagnetic brake, a brake control circuit, with which the operation of the brake controller is controlled by producing control pulses in the control pole of the switch of the brake controller, an input circuit for the safety signal to be disconnected/connected from outside the drive device, drive prevention

Abstract: A safety arrangement of an elevator, which includes sensors configured to indicate functions that are critical from the viewpoint of the safety of the elevator, and also a safety circuit, with which the data formed by the sensors indicating the safety of the elevator is read. The safety arrangement includes a drive device for driving the hoisting machine of the elevator. The drive device includes a DC bus, and also a motor bridge connected to the DC bus for the electricity supply of the elevator motor. The motor bridge includes high-side and low-side switches for supplying electric power from the DC bus to the elevator motor when driving with the elevator motor, and also from the elevator motor to the DC bus when braking with the elevator motor.

Abstract: A brake controller, an elevator system and a method for performing an emergency stop are provided. The brake controller includes an input for connecting the brake controller to the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator, an output for connecting the brake controller to the electromagnet of the brake, a switch for supplying electric power from the DC intermediate circuit of the frequency converter driving the hoisting machine of the elevator via the output to the electromagnet of a brake, and also a processor with which the operation of the brake controller is controlled by producing control pulses in the control pole of the switch of the brake controller.

Abstract: The invention relates to a braking apparatus, an electric drive and an elevator system. The braking apparatus comprises an apparatus for dynamic braking, for braking an electric machine with dynamic braking, an input for the control signal of the braking apparatus, and also a controller, for controlling the apparatus for dynamic braking as a response to the aforementioned control signal of the braking apparatus.

Abstract: An elevator arrangement includes a plurality of elevators in a building, which plurality includes a plurality of zoned elevators moving in an elevator hoistway, which have different ranges of movement of the elevator car in the building to each other, and which zoned elevators each have a top limit and a bottom limit of the range of movement of the elevator car, to above the top limit and to below the bottom limit of which range of movement travel of the elevator car of the zoned elevator in question is prevented. The vertical location, in relation to the building, of the top limit and/or bottom limit of the range of movement of the elevator car of each aforementioned zoned elevator can be changed.

Abstract: An elevator system includes an elongated suspension member, a load-receiving part suspended on the suspension member, a counterweight suspended on the suspension member for supporting the load-receiving part, an elongated traction member for exerting a pulling force on the load-receiving part and on the counterweight, a drive unit, with which the load-receiving part is driven by pulling the traction member and also one or more guide rails, along the path of movement determined by which the load-receiving part is moved. The drive unit is disposed to the side of the path of movement of the load-receiving part.