Abstract: A method detects an arrival of a maintenance person to a maintenance site. The method includes: scanning radio transmissions from radio devices residing within a radio range of a mobile terminal device carried by the maintenance person; detecting amongst the scanned radio transmissions at least one radio transmission from at least one radio node arranged to the maintenance site for which the maintenance person has at least one open maintenance order; and generating to a remote monitoring unit at least one first control signal including information representing the detection of the arrival of the maintenance person to the maintenance site. Also provided is a detection system, a mobile terminal device, a computer program, and a tangible non-volatile computer-readable medium for detecting an arrival of a maintenance person to a maintenance site.

Abstract: A method for detecting a maintenance mode operation of an elevator system includes obtaining, by a monitoring unit being a separate unit arranged to an elevator car of the elevator system, motion data of the elevator car representing at least one drive motion profile of the elevator car; comparing, by the monitoring unit, the obtained motion data to at least one respective reference motion profile of the elevator car; detecting, by the monitoring unit, at least one deviation between the obtained motion data and the respective at least one reference motion pro-file, wherein the at least one deviation indicates at least one maintenance related operation; and detecting, by the monitoring unit, the maintenance mode operation of the elevator system in response to the detection of the at least one deviation. A monitoring unit, an elevator system, and a computer program for detecting a maintenance mode operation of an elevator system are also disclosed.

Abstract: A method for evaluating an orientation of an elevator car, performed by a control unit, includes obtaining measurement data from at least one inclination sensor associated to the elevator car, the measurement data including data values indicative of an orientation of the elevator car; comparing the data values of the measurement data to reference data values; setting, in accordance with a comparison between the data values of the measurement data to the reference data values, a detection result to express one of the following: i) the orientation of the elevator car is proper, ii) the orientation of the elevator car is improper. An arrangement, an elevator system, and a computer program product are also disclosed.

Abstract: A method for preventive maintenance of an elevator speed sensor system includes at least a first and a second sensor, which are independent of each other. The method includes: determining a reference distance for an elevator car travel between a first door zone and a second door zone, during the elevator car travel, defining continuously a first elevator car speed information from the first sensor and a second elevator car speed information from the second sensor, calculating a cumulative sensor system error by integrating the difference between the first elevator car speed information and the second elevator car speed information, and dividing the cumulative sensor system error with the reference distance to obtain a sensor system performance indicator.

Abstract: A device and a method for controlling an apparatus being an elevator, an escalator or automatic doors are provided, by which it is detected whether a fault is present in the apparatus, it is determined, when the fault is present, whether an automatic fault clearing may be carried out, and if it is determined that the automatic fault clearing may be carried out, the automatic fault clearing is performed by automatically clearing one or more faults.

Abstract: The invention relates to a method for defining a tension of a belt of an automatic door. The method comprises: exciting a resonant frequency of the belt to cause a vibration of the belt, obtaining motion data representing motion of an electric motor configured to move the belt, defining vibration information representing the vibration of the belt based on the obtained motion data, and defining the tension of the belt based on the defined vibration in-formation and predefined characteristics of the belt. The invention relates also to a door drive unit and a computer program for defining a tension of a belt of an automatic door.

Abstract: A door sensor unit, for determining a type of a door to which the door sensor unit is attached, is configured to: obtain movement data representing movement of the door during a learning period, and determine the type of the door based on the obtained movement data. A method for determining a type of a door is also disclosed.

Abstract: A device and a method for controlling an apparatus being an elevator, an escalator or automatic doors are provided, by which it is detected whether a fault is present in the apparatus, it is determined, when the fault is present, whether an automatic fault clearing may be carried out, and if it is determined that the automatic fault clearing may be carried out, the automatic fault clearing is performed by automatically clearing one or more faults.

Abstract: A method for deploying a controller to an elevator system includes generating a request to at least one other controller for obtaining at least one parameter relating to a deployment of the controller to the elevator system, receiving a response, and in response to detection that the at least one parameter in the response comprises a set of operational parameters, initiating a configuration procedure, and in response to detection that the at least one parameter in the response does not comprise the set of operational parameters, deriving an identifier of the elevator system included as the at least one parameter in the response and generating a request including the identifier of the elevator system for obtaining the set of operational parameters. An elevator system is configured to perform the method.

Abstract: A device and a method for controlling an apparatus being an elevator, an escalator or automatic doors are provided, by which it is detected whether a fault is present in the apparatus. It is determined, when the fault is present, whether an automatic fault clearing may be carried out, and if it is determined that the automatic fault clearing may be carried out, the automatic fault clearing is performed by automatically clearing one or more faults.

Abstract: There are provided measures for performing a configuration control in relation to an elevator, an escalator and automatic doors in a remote manner. Such measures exemplarily comprise determining a status of a component of said control apparatus, detecting whether a change with respect to said component has occurred based on said status, defining configuration parameters for said component, if it is detected that said change has occurred, and initiating transmission of said configuration parameters to said control apparatus.

Abstract: A method for diagnosis and/or maintenance of a transportation system that has a transportation device and a remote monitoring unit, the transportation device having a control board for controlling and/or monitoring a function of said transportation device, and a local control unit for controlling said and/or monitoring said control board, may include detecting raw data associated with the function at the control board and/or the local control unit; generating condition information and/or performance information based on the raw data and calculating statistics information based on the generated information at the local control unit; buffering the generated information and/or statistics information at the local control unit; transmitting the buffered information to the remote monitoring unit; processing the transmitted information to determine a service need condition; and selectively transmitting maintenance information associated with the service need condition to the local control unit and/or a mobile servic

Abstract: A method for diagnosis and/or maintenance of a transportation system that has a transportation device and a remote monitoring unit, the transportation device having a control board for controlling and/or monitoring a function of said transportation device, and a local control unit for controlling said and/or monitoring said control board, may include detecting raw data associated with the function at the control board and/or the local control unit; generating condition information and/or performance information based on the raw data and calculating statistics information based on the generated information at the local control unit; buffering the generated information and/or statistics information at the local control unit; transmitting the buffered information to the remote monitoring unit; processing the transmitted information to determine a service need condition; and selectively transmitting maintenance information associated with the service need condition to the local control unit and/or a mobile servic

Abstract: Controlling an apparatus may include detecting a fault in the apparatus, such that a controller of the apparatus exits a normal operation state for controlling the apparatus and enters a faulted state based on the detected fault, operation of the apparatus is stopped based on the controller entering the faulted state, and the detected fault is recorded in a fault memory or a fault recorder of the controller. The controlling may include receiving a remote fault clearing command subsequent to detecting the fault, and clearing the detected fault in response to the remote fault clearing command, such that the controller exits the faulted state and enters the normal operation state, and operation of the apparatus is enabled based on the controller entering the normal operation state. Clearing the detected fault may include deleting the detected fault from the fault memory or fault recorder.

Abstract: Maintenance of a transportation device propelled by an electric motor, wherein an incremental encoder senses motion of a moving part of, or a part moved by, the electric motor, may include acquiring a pulses-per-rotation configuration value PPRconf, representing a quantity of pulses which should be provided by the incremental encoder per one rotation of the electric motor; deriving a pulses-per-rotation estimation value PPRest representing a quantity of pulses provided by the incremental encoder per one rotation of the electric motor; determining a pulses-per-rotation error value PPRerr representing a deviation of the pulses-per-rotation estimation value PPRest from the pulses-per-rotation configuration value PPRconf, based on a relation: PPRerr=PPRest?PPRconf, PPRconf?PPRest, PPRest/PPRconf, or PPRconf/PPRest; and utilizing the pulses-per-rotation error value PPRerr to generate an instance of maintenance information indicating that a maintenance operation should be performed on the transportation device.

Abstract: According to an aspect, there are provided methods and apparatuses for configuring wireless devices in an elevator system. According to an aspect, an elevator car is caused to perform a travel in an elevator shaft. Wireless signal strength values and a device identifier associated with each detected wireless device are recorded based on wireless signals from the wireless devices at landing floors with an elevator car mounted wireless device during the travel. Data is received from the elevator car mounted wireless device, the data comprising for each detected wireless device the device identifier of the detected wireless device and data associated with the wireless signal strength values of the detected wireless device. Each detected wireless device at the landing floors is associated with a specific landing floor based on the data received from the elevator car mounted wireless device.

Abstract: The invention relates to a method for maintenance of a frequency converter for driving an electric motor of a transportation device, said frequency converter being supplied with AC mains power via a contactor, and including a rectifier circuit for providing a DC supply voltage, a capacitive intermediate circuit for leveling DC supply voltage, and an inverter circuit for providing power to the electric motor. In the method, after the transportation device has been vacant for a predetermined time period, said contactor is opened to disable power flow from mains supply to the frequency converter, and a test load is connected to the intermediate circuit, parallel to a capacity of the intermediate circuit. The DC supply voltage Udc(t) is detected, and the detected DC supply voltage Udc(t) is utilized for establishing a maintenance information indicating that a maintenance should be done on the frequency converter.

Abstract: A method for preventive maintenance of an elevator speed sensor system includes at least a first and a second sensor, which are independent of each other. The method includes: determining a reference distance for an elevator car travel between a first door zone and a second door zone, during the elevator car travel, defining continuously a first elevator car speed information from the first sensor and a second elevator car speed information from the second sensor, calculating a cumulative sensor system error by integrating the difference between the first elevator car speed information and the second elevator car speed information, and dividing the cumulative sensor system error with the reference distance to obtain a sensor system performance indicator.

Abstract: The invention relates to a method for diagnosis and/or maintenance of a transportation system, said transportation system having at least one transportation device and a remote monitoring unit being remote from said transportation device, said transportation device having a control board for controlling and/or monitoring a function of said transportation device, and a local control unit for controlling said and/or monitoring said control board, said method comprising: detecting raw data connected to said at least one function at said control board and/or said local control unit; generating condition information and/or performance information based on said raw data at said control board and/or said local control unit; calculating statistics information based on said condition information and/or performance information at said local control unit; buffering said condition information and/or performance information and/or statistics information at said local control unit; transmitting said condition informatio

Abstract: The invention relates to a method for maintenance of a frequency converter for driving an electric motor of a transportation device, said frequency converter being supplied with AC mains power via a contactor, and including a rectifier circuit for providing a DC supply voltage, a capacitive intermediate circuit for leveling DC supply voltage, and an inverter circuit for providing power to the electric motor. In the method, after the transportation device has been vacant for a predetermined time period, said contactor is opened to disable power flow from mains supply to the frequency converter, and a test load is connected to the intermediate circuit, parallel to a capacity of the intermediate circuit. The DC supply voltage Udc(t) is detected, and the detected DC supply voltage Udx(t) is utilized for establishing a maintenance information indicating that a maintenance should be done on the frequency converter.