Patent application number | Description | Published |
20080236955 | EQUIPMENT AND METHOD FOR CONTROLLING AN ELEVATOR DOOR - An equipment ( | 10-02-2008 |
20090120725 | Elevator arrangement - The present invention discloses an arrangement and a method for controlling the power supply of the load of an elevator system. The arrangement comprises at least a monitoring unit ( | 05-14-2009 |
20090178889 | ELEVATOR SYSTEM - The invention relates to a safety arrangement of an elevator system and to a method for ensuring safety in an elevator system. The safety arrangement comprises at least one mechanical stopping appliance and the control of the safety arrangement comprises at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car. In the method for ensuring safety in an elevator system at least one mechanical stopping appliance is fitted to the safety arrangement of the elevator system and at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car is set for the control of the safety arrangement. | 07-16-2009 |
20090255762 | SAFETY ARRANGEMENT OF AN ELEVATOR - The invention relates to a safety arrangement of an elevator and a method for implementing safety spaces in an elevator shaft. The elevator comprises an elevator control system, an elevator motor, a power supply circuit of the elevator motor, and at least one mechanical stopping appliance for preventing movement of the elevator car in the elevator shaft. In the method according to the invention information is read with the control unit from the sensors that measure the position of the landing door of the elevator and possibly information is read from the sensors that measure the position of the door of the elevator car. If it is detected that more landing doors than the door of the elevator car are open, the control unit is switched to the person in the elevator shaft mode and information about the person in the elevator shaft mode is sent with the control unit to the elevator control system. | 10-15-2009 |
20090288920 | UNINTENDED MOVEMENT GOVERNOR - The invention relates to an electronic unintended movement governor, which comprises an input for car position data, means for determining the speed of the elevator car, a plurality of limit values for permitted movement of the elevator car, such as the limit value of the maximum permitted speed of the elevator car, and which unintended movement governor also comprises overspeed monitoring for controlling at least one stopping appliance of the elevator car when the speed of the elevator car exceeds the limit value of the maximum permitted speed. The unintended movement governor comprises at least two separate controls for controlling a stopping appliance of the elevator car. Additionally, the invention relates to a method for controlling the aforementioned electronic unintended movement governor. | 11-26-2009 |
20090321192 | ELEVATOR SAFETY DEVICE - The invention relates to an elevator safety arrangement and a method for implementing safety spaces in an elevator shaft. The safety arrangement of the invention comprises a mechanical safety device which can be set to a working position to ensure a sufficient safety space in the elevator shaft and an electric safety system for identifying the operating state of the mechanical safety device. According to the method of the invention, detectors comprised in the electric safety system are read by an electric safety controller and, when a functional deviation is detected, one or more stopping devices are actuated to bring the elevator system into a safe operating state. | 12-31-2009 |
20100032246 | FAIL-SAFE POWER CONTROL APPARATUS - The invention relates to a fail-safe power control apparatus ( | 02-11-2010 |
20100038185 | FAIL-SAFE POWER CONTROL APPARATUS - The invention relates to a fail-safe power control apparatus ( | 02-18-2010 |
20100219022 | ELECTRIC MOTOR DRIVE - The invention relates to a switch arrangement of an electric motor drive ( | 09-02-2010 |
20110114422 | ELEVATOR SAFETY ARRANGEMENT HAVING SAFETY SPACES - An elevator safety arrangement and a method for implementing safety spaces in an elevator has a mechanical safety device which can be set to a working position to ensure a sufficient safety space in the elevator shaft and an electric safety system for identifying the operating state of the mechanical safety device. An electric safety controller comprises means for measuring the total resistance of a series circuit. The method includes reading the number of landing doors open by means of detectors fitted in conjunction with the landing doors, reading the number of elevator car doors open by means of detectors fitted in conjunction with the elevator car doors, and reading the position of a mechanical safety device by means of detectors fitted in conjunction with the mechanical safety device. If it is established that number of landing doors open is greater than the number of elevator car doors open, then setting the safety system into a ‘person in shaft’ state and preventing operation of the elevator. If it is established during the ‘person in shaft’ state of the safety system that the number of landing doors open is equal to the number of elevator car doors open and that the mechanical safety device has been set to a working position, then allowing maintenance operation. | 05-19-2011 |
20110162913 | ELEVATOR SYSTEM, AND METHOD IN CONJUNCTION WITH AN ELEVATOR SYSTEM - An elevator system and a method for accelerating the starting of travel in an elevator system are provided. The elevator system includes an elevator control system for implementing controlled motion of an elevator car; a door mechanism control system for implementing controlled movement of the elevator car door; and a door coupler, for forming a mechanical coupling between elevator car door and landing door; and a controller of fast start of travel, which has an input for elevator car position data, an input for landing door position data, an input for car door position data, and at least one output for activating the elevator motor power supply circuit and the elevator brake release circuit. | 07-07-2011 |
20110278099 | ELEVATOR SYSTEM - An elevator system and a brake control circuit include a first switch that controls the electricity supply of the winding of the brake, which switch is connected in a controlled manner with the control of the electricity supply of the winding of the brake, and thus the braking function is controlled. | 11-17-2011 |
20130213745 | METHOD IN CONNECTION WITH A QUICK STOP SITUATION OF AN ELEVATOR, AND ALSO A SAFETY ARRANGEMENT FOR AN ELEVATOR - A method and a safety device for implementing the method are provided in connection with a quick stop situation of an elevator. In the method, an activation process of a machinery brake is started and also a disconnection process of the current supply of the elevator motor is started after the starting of the activation process of a machinery brake. | 08-22-2013 |
20130233657 | BRAKING APPARATUS - A braking apparatus is provided for braking the rotating part of a hoisting machine. The braking apparatus includes one or more brakes, which contain altogether at least one movable brake shoe, spring elements for activating the brake by moving the brake shoe forward, at least two electromagnets, which, when magnetized by a magnetizing current, apply a force of attraction to bodies conducting magnetic flux. The electromagnets are fitted to release the brake by pulling the brake shoe backwards by resisting the spring elements. The brake is fitted to be activated by reducing the magnetizing current of the electromagnet. The braking apparatus includes a power supply circuit for the electromagnets, which contains controllable power supply interrupting devices. The electromagnets are connected to the power supply circuit in such a way that the supply of magnetizing current to each electromagnet can be interrupted by means of at least two different interrupting devices. | 09-12-2013 |
20130240301 | BACKUP CIRCUIT FOR ELECTRICITY SUPPLY, ELEVATOR SYSTEM, AND METHOD - The invention relates to a backup circuit for electricity supply for ensuring the electricity supply of an electronic overspeed governor in connection with a malfunction of the electricity supply. The backup circuit for electricity supply comprises an energy storage. The backup circuit for electricity supply is configured to disconnect the electricity supply from the energy storage ensuring the electricity supply of the electronic overspeed governor to the overspeed governor when the malfunction of the electricity supply continues. | 09-19-2013 |
20130246928 | DEVICE AND SYSTEM FOR ELEVATOR MAINTENANCE - The invention concerns a portable user interface and a system utilizing the user interface for the collection and processing of information relating to elevator maintenance. Said user interface comprises means for transferring information between the user interface and an elevator control unit and between the user interface and an elevator maintenance database server. | 09-19-2013 |
20130271152 | INTERFACE UNIT, CONVEYING SYSTEM AND METHOD - 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. | 10-17-2013 |
20140202798 | ELEVATOR MONITORING ARRANGEMENT AND METHOD FOR MONITORING AN ELEVATOR - A monitoring arrangement of an elevator and to a method for monitoring an elevator. The monitoring arrangement of an elevator comprises a drop-out safety device of the elevator, an elevator component, which is in operational connection with the drop-out safety device of the elevator, a measuring device, with which the operation of the aforementioned elevator component is measured, and also a monitoring unit, comprising an input for the measuring data of the aforementioned measuring device as well as a memory for setting one or more boundary conditions to be connected to the safe operation of the elevator component. The monitoring unit is configured to receive measuring data from the aforementioned measuring device and also to determine that the operating safety of a drop-out safety device of the elevator is endangered if the measuring data received does not fulfill the boundary conditions set for the safe operation of the elevator component. | 07-24-2014 |
20140216856 | METHOD FOR PROVIDING WELL ACCESS IN AN ELEVATOR - A method for providing well access in an elevator well having at least one elevator car moveable in the elevator well, includes the following steps: a well access operating mode of the elevator is activated, in which well access operating mode the elevator car will not respond to any landing calls, group controller commands or to any other remote commands, upon activation of the well access operating mode the car is controlled to travel a set distance up or down, the car is controlled to stop at said distance for a given time, the elevator will automatically exit the well access operating mode and return back to service if within the given time no well entrance, e.g. landing door, is opened. After non authorized activation of the well access operating mode, the elevator is automatically returned to service, which reduces the danger of off-service times of the elevator based on misuse of activation signals. | 08-07-2014 |
20150039258 | TESTING APPARATUS AND SAFETY ARRANGEMENT - The invention relates to a safety arrangement and also a testing apparatus for testing the operation of an extreme limit switch in a conveying system, which can be removed from service on the basis of a signal to be received from the extreme limit switch. The testing apparatus comprises a microprocessor and a memory, in which is recorded a testing program to be run with the microprocessor, which testing program comprises instructions for preventing removal of the conveying system from service occurring on the basis of a signal from an extreme limit switch as well as for testing the operation of the extreme limit switch when removal of the conveying system from service has been prevented. | 02-05-2015 |
20150053507 | BRAKE CONTROLLER, ELEVATOR SYSTEM AND A METHOD FOR PERFORMING AN EMERGENCY STOP WITH AN ELEVATOR HOISTING MACHINE DRIVEN WITH A FREQUENCY CONVERTER - 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. | 02-26-2015 |
20150053508 | SAFETY ARRANGEMENT OF AN ELEVATOR - 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. The drive device also includes 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, an input circuit for a safety signal, which safety signal can be disconnected/connected from outside the drive device, and also drive prevention logic, which is connected to the input circuit and is configured to prevent the passage of control pulses to the control poles of the high-side and/or low-side switches of the motor bridge when the safety signal is disconnected. The signal conductor of the safety signal is wired from the safety signal to the drive device, and the safety circuit comprises means for disconnecting/connecting the safety signal. The safety circuit is arranged to bring the elevator into a state preventing a run by disconnecting the safety signal, and the safety circuit is arranged to remove the state preventing a run by connecting the safety signal. | 02-26-2015 |
20150075915 | METHOD AND AN ELEVATOR FOR STOPPING AN ELEVATOR CAR USING ELEVATOR DRIVE - The invention relates to a method and an apparatus. In the method there is determined a speed limit or an acceleration limit for an elevator car based on elevator state information, the elevator state information comprising at least information on whether the elevator car is being driven or whether the elevator car is in a floor. Power supply to the motor is disabled and brakes are applying for braking movement of the elevator car. Speed or acceleration of the elevator car is measured, in response to the applying of the at least one brake and the disabling of the power supply to the motor. It is determined whether the at least one of speed and acceleration of the elevator car exceeds the respective at least one of the speed limit and the acceleration limit. Thereupon, power supply to the motor is enabled for stabilizing movement of the elevator car. | 03-19-2015 |
20150075917 | DRIVE DEVICE OF AN ELEVATOR - 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 logic, which is connected to the input circuit and is configured to prevent the passage of control pulses to the control poles of the high-side and/or low-side switches of the motor bridge when the safety signal is disconnected, and also brake drop-out logic, which is connected to the input circuit and is configured to prevent passage of the control pulses to the control pole of the switch of the brake controller when the safety signal is disconnected. | 03-19-2015 |
20150083528 | METHOD FOR MONITORING THE MOVEMENT OF AN ELEVATOR COMPONENT, AND A SAFETY ARRANGEMENT FOR AN ELEVATOR - A method and a safety arrangement are provided for monitoring the movement of an elevator component, more particularly of an elevator car or of the automatic door of an elevator. In the method, a setup drive of an elevator component is run, and the speed and/or acceleration of the elevator component is measured during the setup drive, a threshold value for the speed and/or acceleration of the elevator component is formed on the basis of the measuring data obtained in the setup drive, the speed and/or acceleration of the elevator component is measured, and if the measured speed and/or acceleration exceeds the aforementioned threshold value, a monitoring signal for bringing the elevator to a safe state is formed. | 03-26-2015 |