Abstract: A control arrangement of an elevator includes a safety gear, an over speed governor with a rope which is connected to the safety gear, a stopping device for generating an actuating force to the safety gear, and a drive unit for driving the elevator apparatus. In order to facilitate easy and efficient maintenance, the control arrangement includes a controller for controlling a triggered sequence to involve activating of the stopping device for braking with the safety gear, and controlling the drive unit to drive the elevator apparatus during braking with the safety gear until the safety gear stops the elevator apparatus.

Abstract: The invention relates to an elevator safety arrangement comprising a hoistway; an elevator car mounted in the hoistway; a working platform on top of the elevator car; at least one movable balustrade, which is movable between a substantially upright position and a substantially horizontal position; and a sensing arrangement for sensing position of the movable balustrade, said sensing arrangement for sensing position of the movable balustrade comprising at least one sensor for sensing position of the balustrade.

Abstract: The invention relates to an elevator safety arrangement comprising a hoistway; an elevator car mounted in the hoistway; a working platform mounted on top of the roof the elevator car; at least one sensing arrangement for sensing load of the working platform and at least one balustrade. Said balustrade is mounted on the working platform such that its weight is carried by the working platform, and in that it is movable between a substantially upright position and a substantially horizontal position.

Abstract: The invention allows verification of authenticity of a maintenance means connectable to a controller of a passenger transportation/access device of a building. A digitally signed license key including a public asymmetric cryptography key of the maintenance means and optionally a one-way hash of a unique identifier of the maintenance means is used for this verification. Furthermore, an asymmetric cryptography key pair of the maintenance means and a symmetric cryptography key created by the controller are utilized in this verification.

Abstract: Elevator components can be equipped with an electronic information plate. The electronic information plates are associated with a particular electronic information plate that can store different properties of the associated component. The content of each electronic information plate is read manually or automatically and transmitted to a controller. The controller analyzes the received content and launches a predetermined action if the content indicates a need for maintenance.

Abstract: A method for taking an elevator of an elevator group into service mode includes entering in the input device of the elevator group a maintenance signal which comprises an elevator definition part, upon entering of the maintenance signal the elevator identified in the elevator definition part is removed from landing call allocation, the identified elevator is initiated to serve all remaining car calls and then to drive to a maintenance floor and to wait there for maintenance operation.

Abstract: A method for allowing pre-allocation of an elevator call in an elevator system with destination control is provided. A first signal is received at an elevator group controller of an elevator system with destination control. The first signal indicates that a passenger including a passenger is detected to be approaching the elevator system at one of multiple floors associated with the elevator system. In response, allocation of an elevator call for the detected passenger is initiated, wherein the one of the multiple floors is assigned as the departure floor for the elevator call.

Abstract: Elevator components can be equipped with an electronic information plate. The electronic information plate are associated with a particular electronic information plate that can store different properties of the associated component. The content of each electronic information plate is read manually or automatically and transmitted to a controller. The controller analyzes the received content and launches a predetermined action if the content indicates a possible mistake or a fraud.

Abstract: The invention relates to an elevator arrangement comprising an elevator with a control system, and an inspection or maintenance mode, which elevator further comprises an elevator car arranged to run up and down in an elevator shaft along its guide rails, and which elevator car is equipped with a roof and a car operating panel. The arrangement comprises actuating means to open the roof of the elevator car, which actuating means are operatively connected to the car operating panel of the elevator.

Abstract: Conventionally, elevator communications have been implemented using travelling cables. This is particularly the case when safety related data transmitted from an elevator car has to fulfil real-time restrictions often set by regulators so that the receiving of the information may not be delayed. Typically, this cannot be guaranteed when wireless transmission technologies are used. The reliability can be increased by using a second to supplement the wireless transmission.

Abstract: A method for performing an emergency stop with an elevator and a safety arrangement of an elevator. In the method, when an emergency stop criterion is fulfilled, the elevator car is driven with the electric motor of the hoisting machine to a stop with a given deceleration profile.

Abstract: The invention relates to a method and to an apparatus for performing a rescue run with an elevator. In the method information is received from the sensors measuring the operation of the elevator about the points being measured with the sensors in question, one or more rescue run functions are selected on the basis of information received from the sensors, and also a rescue run, including the selected one or more rescue run functions, is performed.

Abstract: The invention relates to a method for verifying speed data of an elevator car for overspeed monitoring of the elevator car. The method comprising obtaining at least one continuous speed data of the elevator car at two channels; obtaining a zone speed data of the elevator car within at least one zone of an elevator shaft at two channels, generating a two-channel verified speed information by comparing the said at least one continuous speed data to the zone speed data at least at one channel; generating a control signal, if the comparison indicates a mismatch at least at one channel; and if the comparison indicates a match at each of the at least one channel in which the comparison is provided; the method further comprising comparing the verified speed information at each channel between each other; and generating the control signal, if the reciprocal comparison indicates a mismatch. The invention also relates to a safety control unit and an elevator system performing at least partly the method.

Abstract: Elevator safety and safety related information needs to be sent reliably to safety controlling systems. Existing elevator communication devices may be used for transmitting this information by processing the received safety and safety related information and processing it before sending it over the communication bus from the elevator car or floor equipment to the controlling devices. A separate communication unit may be used for receiving and processing safety and safety related data packets before they are transmitted over a common bus used for safety and safety non-critical submission.

Abstract: The invention relates to an interface unit, a conveying system and a method. The interface unit comprises an input circuit for the signal determining the safety of the conveying system. The interface unit further comprises means for testing the operating condition of the input circuit.

Abstract: Elevator safety and safety related information needs to be sent reliably to safety controlling systems. Existing elevator communication devices may be used for transmitting this information by processing the received safety and safety related information and processing it before sending it over the communication bus from the elevator car or floor equipment to the controlling devices. A separate communication unit may be used for receiving and processing safety and safety related data packets before they are transmitted over a common bus used for safety and safety non-critical submission.

Abstract: This invention relates to a method for defining absolute position information of an elevator car. The method comprises: obtaining continuously a pulse position information of the elevator car; and defining an absolute position information of the elevator car by adding a predefined correction value to the obtained pulse position information of the elevator car. The predefined correction value indicates a drift between the obtained pulse position information of the elevator car and the actual pulse position of the elevator car. The invention also relates to a safety control unit and an elevator system performing at least partly the method.

Abstract: The invention refers to a method for accessing an passenger transportation device control means comprising several separated printed circuit boards (PCB), whereby each of these PCBs comprises a unique identifier (ID), and in which method the passenger transportation device control means comprise a matching table which is used by the passenger transportation device control means to perform a matching test to check the identifier of at least two of the PCBs and to put the passenger transportation device control means into normal operation only if their IDs match the IDs of the matching table.

Abstract: A method and an arrangement are provided for monitoring the safety of a counterweighted elevator. In the method, an elevator car is driven with a hoisting machine towards the top end of the elevator hoistway, contact between the counterweight and the end buffer of the elevator hoistway is determined, a reference point for the location of the elevator car is registered when detecting contact between the counterweight and the end buffer, the distance that the elevator car travels onwards from the aforementioned reference point for the location is measured, and if the distance traveled by the elevator car onwards from the aforementioned reference point exceeds a threshold value a signal indicating a risk of slackening of the traction rope is formed.

Abstract: A method for dynamically adjusting a levelling speed limit of an elevator car during a levelling operation includes obtaining an indication that the elevator car is detected to arrive to a zone; obtaining at least one value indicating the speed of the elevator car, in response to detecting that the elevator car arrives to the zone; and dynamically adjusting the levelling speed limit of the elevator car based on the speed of the elevator car. An elevator control unit and a system are provided to perform at least partly the method.