EP4077188A1 - Dispositif de commande permettant de commander un système de levage dans un mode d'inspection, et système de levage - Google Patents

Dispositif de commande permettant de commander un système de levage dans un mode d'inspection, et système de levage

Info

Publication number
EP4077188A1
EP4077188A1 EP20811681.4A EP20811681A EP4077188A1 EP 4077188 A1 EP4077188 A1 EP 4077188A1 EP 20811681 A EP20811681 A EP 20811681A EP 4077188 A1 EP4077188 A1 EP 4077188A1
Authority
EP
European Patent Office
Prior art keywords
contact
control
designed
switching unit
delay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20811681.4A
Other languages
German (de)
English (en)
Other versions
EP4077188B1 (fr
Inventor
Frank Olivier Roussel
Markus Walker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inventio AG
Original Assignee
Inventio AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Publication of EP4077188A1 publication Critical patent/EP4077188A1/fr
Application granted granted Critical
Publication of EP4077188B1 publication Critical patent/EP4077188B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel

Definitions

  • Control device for controlling an elevator system in an inspection company and elevator system
  • the present invention relates to a control device for controlling an elevator installation in an inspection operation.
  • the invention also relates to an elevator installation with such a control device.
  • Elevators such as passenger or goods lifts are usually equipped with a safety circuit.
  • a safety circuit typically includes a series connection of safety-relevant switches, of which at least one can be opened under certain operating conditions, for example when the elevator is put into an inspection mode, a malfunction is detected or a car door, shaft door, maintenance door or maintenance hatch is opened. If the safety circuit is interrupted, the elevator is brought to a standstill by switching off a drive of the elevator and activating a braking device for braking the elevator.
  • the switches monitor, for example, the closed states of elevator doors, i. H. a car door and several shaft doors, so that it can be ensured that a car can only be moved when all elevator doors are closed and the associated door switches are thus actuated.
  • the safety circuit is usually interrupted, for example because a corresponding switch in the safety circuit was opened by placing the elevator in inspection mode or a shaft door had to be opened so that a technician could enter an elevator shaft through it can.
  • open contacts of the safety circuit can be closed via an inspection path.
  • the inspection path can be closed via an inspection control with several operating buttons.
  • a first control button for enabling a travel movement and a second control button for specifying a direction of travel must be pressed at the same time.
  • the inspection path becomes, and with it the safety circuit, interrupted again immediately, which results in an immediate activation of the braking device and a relatively abrupt braking of the elevator.
  • forces can be created that place a heavy load on the load-bearing elements of the elevator. The forces can cause vibrations that affect the maintenance personnel and their processes, such as the precise positioning of the cabin.
  • EP 2493 802 B1 describes a safety circuit in an elevator installation.
  • the safety circuit comprises at least one series connection of safety-relevant contacts that are closed when the elevator system is operating correctly. At least one of the contacts can be bridged by means of semiconductor switches, the semiconductor switches being controllable by means of at least one processor and being able to be monitored for short circuits by means of at least one monitoring circuit.
  • the safety circuit comprises at least one electromechanical relay circuit with relay contacts connected in series with the contacts of the bridgeable series circuit. The relay circuit can be controlled by means of the processor. In the event of a short circuit in the semiconductor switch, the bridgeable series circuit can be interrupted by means of the relay contacts.
  • the prior art is about the safe interruption of the bridging path because the car is moving towards an unsafe state.
  • the aim of the invention is to end a car movement in the inspection mode. There is no urgency.
  • a first aspect of the invention relates to a control device for controlling an elevator installation in an inspection operation.
  • the elevator system comprises a safety circuit with at least one safety contact that is open during inspection operation and an inspection path for bridging the at least one safety contact.
  • the control device comprises a first control element for operating the elevator system in inspection mode, and a second control element for Operating the elevator system in inspection mode and a first switching unit which has a first contact and a first delay element and is designed to close the first contact in response to actuation of the first operating element and to open it in response to releasing the first operating element.
  • the first delay element is designed to delay opening of the first contact by a defined first delay time from the release of the first operating element.
  • the control device further comprises a second switching unit connected in parallel with the first switching unit, which has a second contact and a second delay element and is designed to close the second contact in response to actuation of the second operating element and in response to releasing the second operating element to open.
  • the second delay element is designed to delay opening of the second contact by a defined second delay time from the release of the second operating element.
  • the first contact and the second contact are connected in series in the inspection path.
  • Such a control device makes it possible to activate a braking device of the elevator system offset in time for releasing at least one of the two control buttons of the inspection control.
  • This delay can be used to stop the elevator system in a controlled manner by regulating a drive of the elevator system before the elevator system is mechanically braked by the braking device. In this way, the load on load-bearing elements of the elevator system can be reduced. Wear of the brake disks and brake linings of the brake device can also be reduced.
  • Another advantage is the increased comfort for the maintenance staff, especially if the maintenance staff is on a car roof when moving the elevator system.
  • a safety circuit can be understood to be an electrical circuit of the elevator system which comprises a series connection of several safety-relevant contacts. These safety contacts can be closed in normal operation, so that the entire safety circuit is closed and thus, in particular, a shifting of the car is permitted. Under certain operating conditions, for example in the event of a malfunction or when the elevator system is put into an inspection mode, at least one of the safety switches and thus the entire safety circuit can be opened, whereby the elevator system is shut down. In particular, the If the safety circuit is interrupted, emergency braking of the elevator system can be initiated.
  • An inspection path can be understood as a current path parallel to the series connection of the safety contacts.
  • the inspection path can have a series connection of at least two switching contacts.
  • the safety contacts can be bridged by closing all contacts in the inspection path.
  • An operating element can generally be understood as a switch which is actuated by touching or pressing with a finger or a hand and automatically returns to a rest position when the finger or hand is removed or when it is released.
  • the operating element can be a mechanical pushbutton or button or a sensor key, for example a capacitive key or a Hall key.
  • the first control element and the second control element can each be coupled to a programmable elevator control of the elevator installation.
  • the elevator control can be configured to detect a respective current switching state of the operating elements and, depending on the switching state, to control a converter of the elevator installation.
  • the first operating element can be a switch for enabling a travel movement of the elevator installation and the second operating element can be a switch for specifying a direction of the travel movement.
  • the first switching unit and the second switching unit can, for example, be constructed identically.
  • the two switching units can comprise electromechanical and / or electronic components.
  • the two switching units can be implemented entirely in hardware, for example in the form of electromechanical relays. This makes it possible to reduce the amount of testing required before an elevator installation equipped with such a control device is put into operation.
  • the respective contacts of the two switching units can be mechanical contacts or semiconductor contacts.
  • the two delay elements can each be an additional capacitor for storing electrical energy required to actuate the associated contacts.
  • the capacitor can be connected to the associated contacts in such a way that, when the capacitor is discharged, the associated contacts can no longer be actuated either.
  • the delay elements can each be, for example, a (programmable) hardware or software module coupled to a suitable timer.
  • the first delay time and the second delay time can be the same or different.
  • a second aspect of the invention relates to an elevator system that has a safety circuit with at least one safety contact that is open in an inspection mode of the elevator system, an inspection path for bridging the at least one safety contact and a control device as described above and below.
  • the elevator system can have at least one car, a drive for driving the at least one car, a power converter for regulating a power supply to the drive and a braking device that can be activated by interrupting the safety circuit for braking the at least one car.
  • the first delay time and the second delay time can each be selected so that the at least one car can pass through Regulating the power supply to the drive can be stopped before the braking device is activated.
  • the elevator control can be configured to control the converter as a direct reaction to the release of at least one of the two operating elements in such a way that the drive is stopped.
  • the respective delay times should, if possible, not be shorter than the minimum time that the converter needs to regulate the drive down to a standstill.
  • the delay times can be selected so that the at least one car is not braked to a standstill, but at least to a very low speed, before the braking device is activated.
  • a braking device can be understood to mean a mechanical, for example electrically controllable, machine brake or a brake on the elevator car.
  • the first delay time and the second delay time can each be greater than 10 ms.
  • the delay times can in each case also be significantly greater than 10 ms, for example greater than 20 ms, greater than 50 ms, greater than 100 ms, greater than 500 ms, greater than 1s, greater 1.5s and / or up to 2s.
  • the control device can furthermore have a third switching unit connected in parallel with the first switching unit and the second switching unit.
  • the third switching unit can have a third contact and a third delay element and be designed to close the third contact in response to the actuation of the first control element and / or the second control element and in response to the release of the first control element and the second control element to open.
  • the third delay element can be designed to delay closing of the third contact by a defined third delay time from the actuation of the first operating element and / or the second operating element.
  • the third contact in the inspection path can be connected in series with the first contact and the second contact.
  • the inspection path is independent of how small a time interval between the actuation of the first operating element and the actuation of the second control element is always closed with a certain delay. If the third delay time is, for example, longer than the time interval between the actuation of the first control element and the actuation of the second control element, the inspection path can still be interrupted for a certain time, although both control elements have already been actuated. A switch-on delay can thus be implemented.
  • the third switching unit can be designed to prevent at least one of the three contacts in the inspection path from closing in the event of a fault in the third switching unit.
  • the first switching unit can have a first control connection and be designed to close the first contact when a control signal is applied to the first control connection and to open the first contact when no control signal is applied to the first control connection.
  • the first operating element can be designed to connect the first control connection in an actuating position to a signal source for providing the control signal and to separate it from the signal source in a rest position.
  • the first delay element can be designed to delay a fall in the control signal at the first control connection by the first delay time when the first control connection is disconnected from the signal source.
  • a control signal can be understood to mean, for example, a current signal or a voltage signal. Accordingly, the signal source can be understood as an electrical energy source in the form of a current source or voltage source.
  • the first control connection can be, for example, a coil connection of a relay or a gate or base connection of a transistor.
  • the second switching unit can have a second control connection and be designed to close the second contact, if a control signal is applied to the second control connection, and to open the second contact if no control signal is applied to the second control connection.
  • the second operating element can be designed to connect the second control connection in an actuating position to a signal source for providing the control signal and to separate it from the signal source in a rest position.
  • the second delay element can be designed to delay a fall in the control signal at the second control connection by the second delay time when the second control connection is disconnected from the signal source.
  • the second control connection can be, for example, a coil connection of a relay or a gate or base connection of a transistor.
  • the first switching unit can have a fourth contact and be designed to open the fourth contact when the control signal is applied to the first control connection and to close when no control signal is applied to the first control connection.
  • the second switching unit can have a fifth contact and be designed to open the fifth contact when the control signal is applied to the second control connection and to close when no control signal is applied to the second control connection.
  • the third switching unit can furthermore have a third control connection and be designed to open the third contact when a control signal is applied to the third control connection and to close when no control signal is applied to the third control connection.
  • the third delay element can be designed to delay the fall of the control signal at the third control connection by the third delay time when the third control connection is disconnected from a signal source for providing the control signal.
  • the third control connection can be connected to the signal source via the fourth contact and the fifth contact.
  • the fourth contact and the fifth contact can be connected in series.
  • the third delay element can comprise a capacitor which can provide electrical energy for actuating the third contact (or further contacts) of the third switching unit.
  • the third switching unit can be separated from the signal source by opening the fourth contact or the fifth contact, so that the third switching unit only receives electrical energy via the capacitor is supplied.
  • a capacitance of the capacitor determines the third delay time. Only when the capacitor is discharged does the third contact in the inspection path close. In other words, the two operating elements must be held simultaneously in their respective actuation positions for at least the duration of the third delay time so that the inspection path closes.
  • the first switching unit can have a sixth contact and be designed to close the sixth contact when the control signal is applied to the first control connection and to open it when no control signal is applied to the first control connection.
  • the third switching unit can have a seventh contact and be designed to close the seventh contact when the control signal is applied to the third control connection and to open it when no control signal is applied to the third control connection.
  • the sixth contact can be connected between the first operating element and the first control connection.
  • the seventh contact can be arranged in a bridging path that bridges the sixth contact.
  • the first control connection can only be connected to the signal source via the first operating element when the bridging path is closed. This is the case when the seventh contact is closed by the third switching unit. If the seventh contact cannot be closed for any reason, then the first contact that can be controlled via the first control connection can no longer be actuated, ie. H. getting closed.
  • the first contact, the fourth contact and the sixth contact can be positively driven, for example.
  • the first switching unit can assume exactly two switching states. In a first switching state, the first contact and the sixth contact are open, while the fourth contact is closed. In a second switching state, the first contact and the sixth contact are closed, while the fourth contact is closed.
  • the second switching unit can have an eighth contact and be designed to close the eighth contact when the Control signal is applied to the second control connection, and to open when no control signal is applied to the second control connection.
  • the third switching unit can have a ninth contact and be designed to close the ninth contact when the control signal is applied to the second control connection and to open it when no control signal is applied to the third control connection.
  • the eighth contact can be connected between the second operating element and the second control connection.
  • the ninth contact can be arranged in a bridging path that bridges the eighth contact.
  • the second control connection can only be connected to the signal source via the second operating element when the bridging path bridging the eighth contact is closed. This is the case when the ninth contact is closed by the third switching unit. If the ninth contact cannot be closed for any reason, the second contact, which can be controlled via the second control connection, can no longer be actuated either. H. getting closed.
  • the second contact, the fifth contact and the eighth contact can be positively driven, for example.
  • the second switching unit can assume exactly two switching states. In a first switching state, the second contact and the eighth contact are open, while the fifth contact is closed. In a second switching state, the second contact and the eighth contact are closed, while the fifth contact is open.
  • the third contact, the seventh contact and the ninth contact can be positively guided.
  • the third switching unit can assume exactly two switching states. In a first switching state, the third contact is open, while the seventh contact and the ninth contact are closed.
  • the third contact is closed, while the seventh contact and the ninth contact are open.
  • the first switching unit can be designed as a first electromechanical relay. Additionally or alternatively, the second switching unit can be designed as a second electromechanical relay. Complementary or alternatively, the third switching unit can be designed as a third electromechanical relay.
  • Such a relay can comprise a coil and an actuator that is electromagnetically coupled to the coil, for example in the form of a hinged or tie rod, the actuator being attracted when the coil is switched on and moved back into a rest position, for example by means of spring force when the coil is turned off.
  • the actuator can be mechanically coupled to one or more contacts of the relay. In the event that the relay comprises several contacts, the contacts can be positively guided via the actuator. This can, for example, prevent a break contact and a make contact of the relay from being closed or opened at the same time. This embodiment makes it possible to achieve a high level of robustness for the control device. In addition, the control device can thereby be implemented with relatively little effort.
  • the first delay element can comprise a capacitor which is connected in parallel with a coil of the first relay.
  • the second delay element can comprise a capacitor which is connected in parallel with a coil of the second relay.
  • the third delay element can comprise a capacitor which is connected in parallel with a coil of the third relay.
  • a respective capacitance of the capacitors can be selected depending on the delay time to be achieved in each case.
  • the control device can be designed to connect the capacitor of the first relay in response to the actuation of the first operating element to a power source in order to charge the capacitor, and in response to the release of the first operating element to connect both the capacitor and the coil of the disconnect the first relay from the power source. It can thus be ensured that the coil is supplied with electrical energy exclusively via the capacitor as soon as the first operating element is released. This can also apply in an analogous manner to the second relay.
  • FIG. 1 shows an exemplary embodiment of an elevator installation.
  • FIG. 2 shows a control device from FIG. 1 in the switched-off state.
  • FIG. 3 shows the control device from FIG. 1 in the switched-on state.
  • FIG. 4 shows the control device from FIG. 1 upon actuation of a first operating element.
  • FIG. 5 shows the control device from FIG. 1 upon actuation of a second one
  • FIG. 6 shows the control device from FIG. 1 shortly after actuation of the first operating element and the second operating element.
  • FIG. 7 shows the control device from FIG. 1 when the first control element and the second control element are released.
  • FIG. 8 shows an exemplary embodiment of a first switching unit of the control device from FIG. 1.
  • FIG. 9 shows an exemplary embodiment of a second switching unit of the control device from FIG. 1.
  • FIG. 10 shows an exemplary embodiment of a third switching unit of the control device from FIG. 1.
  • FIG. 1 shows an example of an elevator system 100 with a car 102 which can be moved up and down by means of a drive 104.
  • the drive 104 is supplied with power via a power converter 106, for example a frequency converter.
  • the elevator system 100 also has a braking device 108 which serves to mechanically brake the elevator car 102 to a standstill in the event of a malfunction or under certain operating conditions that deviate from normal operation and to keep it at a standstill.
  • the elevator system 100 has an inspection controller 110.
  • an operator 112 can switch the elevator system 100 to an inspection mode.
  • a safety circuit of the elevator system 100 is interrupted.
  • the braking device 108 is also activated.
  • the inspection control 110 comprises a first operating element PB1 for enabling a driving movement and a second operating element PB2 for specifying a direction of the driving movement, i.e. H. up or down.
  • the first operating element PB1 and the second operating element PB2 must be held in their respective actuating position by the operator 112 at the same time so that the car 102 travels upwards or downwards.
  • FIG. 2 shows a control device 200 which comprises the two operating elements PB1, PB2 from FIG. 1.
  • the control device 200 is designed to close an inspection path 202 when the two operating elements PB1, PB2 are actuated accordingly and to interrupt at least one of the two operating elements PB1, PB2 when releasing it.
  • the inspection path 202 is connected in parallel with a series connection of safety contacts 204 in the safety circuit 206 mentioned in connection with FIG. 1. In the inspection mode, at least one of the safety contacts 204 is open.
  • the operation of the control device 200 is explained in more detail below.
  • the control device 200 comprises a first switching unit Kl, a second switching unit K2 and a third switching unit K3, which are connected in parallel with one another.
  • Each of the three switching units Kl, K2, K3 is designed with three contacts, of which two contacts each function as a make contact and one contact functions as a break contact. These contacts can be designed as mechanical contacts or as semiconductor contacts.
  • a switching logic of the control device 200 is illustrated using the example of three electromechanical relays. However, the switching logic can just as well be implemented with an electronic system that can be programmable, for example. In order to be able to ensure the safety of the elevator system, the relays or the electronic system can be constructed with suitable electrical and / or electronic components in such a way that they meet a high safety standard, for example the SIL3 standard (Safety Integrity Level).
  • the first switching unit Kl has a first coil S1 and three contacts Kl -1, Kl -2 and Kl-3, which can be opened and closed by means of the first coil S1.
  • the contacts Kl -1, Kl-3 are each designed as a make contact, while the contact Kl -2 is designed as an opener.
  • the first switching unit Kl has a first delay element CI, here a first capacitor CI, which is connected in parallel with the first coil S1.
  • the second switching unit K2 has a second coil S2 and three contacts K2-1, K2-2 and K2-3, which can be opened and closed by means of the second coil S2.
  • the contacts K2-1, K2-3 are each designed as a make contact, while the contact K2-2 is designed as a break contact.
  • the second switching unit 210 has a second delay element C2, here a second capacitor C2, which is connected to the second coil
  • the third switching unit K3 has a third coil S3 and three contacts K3-1, K3-2 and K3-3, which can be opened and closed by means of the third coil S3.
  • the contacts K3-1, K3-2 are each designed as a make contact, while the contact K3-3 is designed as a break contact.
  • the third switching unit K3 has a third delay element C3, here a third capacitor C3, the one with the third coil
  • K3 and C3 are in place to ensure that Kl-3 and K2-3 are only closed if PB 1 and PB2 are pressed within a period of time determined by the dimensioning of C3.
  • the three delay elements CI, C2, C3 can also be implemented in other ways, for example as an RC element or diode or as a software module.
  • the three contacts Kl-3, K2-3, K3-3 are connected in series in the inspection path 202. If all three contacts Kl-3, K2-3, K3-3 are closed, the opened safety contacts 204 in the safety circuit 206 are bridged.
  • the other contacts of the control device 200 are interconnected as follows.
  • the first coil S1 has a first control connection A1, here a first coil connection A1, which can be connected via the first operating element PB1 to an energy source 208 for providing electrical energy, here a current source.
  • the first control element PB 1 is connected in series with the first coil S 1.
  • the contact Kl-1 is connected between the first operating element PB1 and the first coil connection A1.
  • the contact K3-2 is connected in parallel with the contact Kl-1.
  • the contact K3-2 is located in a first bridging path 210 which connects the first coil connection A1 to a line section connecting the contact Kl-1 to the first operating element PB1.
  • the first capacitor CI is also connected to the first coil connection A1, so that the first capacitor C 1 is charged on the one hand when the first coil connection A1 is connected to the energy source 208, and on the other hand the first coil S1 is charged for a limited period depending on the capacity and state of charge Permanently supplied with current when the first coil terminal Al is disconnected from the energy source 208.
  • the second coil S2 has a second coil connection A2, which can be connected to the energy source 208 via the second operating element PB2.
  • the second control element PB2 is connected in series with the second coil S2.
  • the contact K2-1 is connected between the second operating element PB2 and the second coil connection A2.
  • Contact K3-1 is connected in parallel with contact K2-1.
  • the contact K3-1 is located in a second bridging path 212, which connects the second coil terminal A2 to the contact K2-1 to the second Control element PB2 connecting line section connects.
  • the second capacitor C2 is also connected to the second coil connection A2, so that the second capacitor C2 is charged on the one hand when the second coil connection A2 is connected to the energy source 208 and on the other hand the second coil S2 is supplied with current depending on the capacity and state of charge, when the second coil terminal A2 is disconnected from the power source 208.
  • a third coil connection A3 of the third coil S3 can be connected to the energy source 208 via the two contacts Kl-2, K2-2, the two contacts Kl -2, K2-2 being connected in series with one another.
  • the third coil connection A3 is thus disconnected from the energy source 208 as soon as one of the two contacts Kl-2, K2-2 is opened, and is only supplied with power by the energy source 208 when both contacts Kl-2, K2-2 are closed .
  • the third capacitor C3 is also connected to the third coil connection A3, so that the third capacitor C3 is charged on the one hand when the third coil connection A3 is connected to the energy source 208 and on the other hand the third coil S3 is supplied with current depending on the capacity and state of charge, when the third coil terminal A3 is disconnected from the power source 208.
  • control device 200 has a first feedback path FB 1 with a first feedback contact 214 and a second feedback path FB2 with a second feedback contact 216.
  • the two feedback paths FBI, FB2 can be connected to a programmable elevator control of the elevator installation 100, for example.
  • the first feedback contact 214 is positively guided with the first control element PB1, so that the first feedback contact 214 is closed as soon as the operator 112 actuates the first control element PB1 and is opened again as soon as the operator 112 releases the first control element PB 1.
  • the second feedback contact 216 is forcibly guided in an analogous manner with the second operating element PB2.
  • FIG. 2 shows the control device 200 in a switched-off state in which the control device 200 is disconnected from the energy source 208, the three capacitors CI, C2, C3 are discharged and the two operating elements PB1, PB2 are in a respective rest position. Accordingly, the normally open contacts Kl -1, Kl -3, K2-1, K2-3, K3-1, K3-2 are open and the contacts Kl-2, K2-2, K3-3 which are designed as normally closed are closed.
  • FIG. 3 shows the control device 200 in a switched-on state in which the control device 200, in contrast to FIG. 2, is connected to the energy source 208.
  • the third coil connection A3 is supplied with current via the two closed contacts Kl-2, K2-2, so that the third capacitor C3 is charged and the third coil S3 picks up.
  • the contact K3-1 in the first bridging path 210 and the contact K3-2 in the second bridging path 212 are closed, while the contact K3-3 in the inspection path 202 is opened.
  • the two operating elements PB1, PB2 are still in their respective rest position, so that both the first coil connection A1 and the second coil connection A2 are separated from the energy source 208.
  • the first operating element PB1 If, as shown in FIG. 4, the first operating element PB1 is actuated, a current flows to the first coil connection A1 via the closed first bridging path 210, so that the first capacitor CI is charged and the first coil S1 picks up.
  • the contact Kl-1 between the first coil connection A1 and the first operating element PB1 and the contact Kl-3 in the inspection path 202 are closed, while the contact Kl-2 between the third coil connection A3 and the energy source 208 is opened.
  • the third coil connection A3 is thus separated from the energy source 208.
  • the power supply to the third coil S3 is maintained for a limited period via the third capacitor C3, which has meanwhile been charged. As long as the third coil S3 is supplied with current, the contact K3-3 located in the inspection path 202 also remains open.
  • the third switching unit K3 is blocked for any reason, so that the contacts K3-1, K3-2, K3-3 remain in the rest position, although a current is flowing through the third coil S3, the two control connections A1, A2 cannot either more can be connected to the energy source 208. This ensures that with a Disturbance of the third switching unit K3, the two switching units Kl, K2 remain in their respective rest position despite actuation of the respective operating elements PB1, PB2 and thus the inspection path 202 is not closed.
  • FIG. 5 shows a switching state of the control device 200 when the second operating element PB2 is actuated in addition to the first operating element PB1.
  • a current flows to the second coil connection A2 via the closed second bypass path 212, so that the second capacitor C2 is charged and the second coil S2 picks up.
  • the contact K2-1 between the second coil connection A2 and the second operating element PB2 and the contact K2-3 in the inspection path 202 are closed, while the contact K2-2 between the third coil connection A3 and the energy source 208 is opened.
  • the third coil S3 is still sufficiently supplied with current via the third capacitor C3, so that the contact K3-3 located in the inspection path 202 is still open and the contacts K3 -1, K3-2 are still closed.
  • the two coil connections A1, A2 are each disconnected from the energy source 208, but are temporarily supplied with current via the respective capacitors CI, C2.
  • the elevator control can bring about a controlled stopping of the elevator car 102 at an early stage before the braking device 108 is activated in response to the interruption of the safety circuit 206.
  • Fig. 8 shows an exemplary embodiment of the first switching unit Kl as a relay in the rest position. It can be seen at a glance which of the contacts act as make contacts and which as break contacts. Shown are the first coil S1, the first capacitor CI connected in parallel with it, an armature 800 that can be moved electromagnetically between the rest position and an actuating position by means of the coil S1, here a tie rod as an example, and the three contacts Kl-1, Kl-2, Kl 3, which are each mechanically coupled to the armature 800 and thus positively driven.
  • FIG 9 schematically shows an exemplary embodiment of the second switching unit K2 as a relay in the rest position.
  • Fig. 10 shows schematically an exemplary embodiment of the third switching unit K3 as a relay in the rest position.
  • the switching units K2, K3 are each designed analogously to the first switching unit Kl.

Landscapes

  • Elevator Control (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

L'invention concerne un dispositif de commande (200) permettant de commander un système de levage (100) dans un mode d'inspection, le système de levage (100) présentant un circuit de sécurité (206), doté d'au moins un contact de sécurité (204) qui est ouvert dans un mode d'inspection, et un trajet d'inspection (202) destiné à ponter l'au moins un contact de sécurité (204). Le dispositif de commande (200) comprend : un premier élément d'actionnement (PB1) destiné à actionner le système de levage (100) dans un mode d'inspection ; un second élément d'actionnement (PB2) destiné à actionner le système de levage (100) dans un mode d'inspection ; une première unité de commutation (K1), qui présente un premier contact (K1-3) et un premier élément de retard (C1) et est conçue pour fermer le premier contact (K1-3) en réponse à l'actionnement du premier élément d'actionnement (PB1) et pour ouvrir ledit premier contact en réponse à la libération du premier élément d'actionnement (PB1) ; et une seconde unité de commutation (K2), qui est connectée en parallèle à la première unité de commutation (K1) et présente un second contact (K2-3) et un second élément de retard (C2) et est conçue pour fermer le second contact (K2-3) en réponse à l'actionnement du second élément d'actionnement (PB2) et pour ouvrir ledit second contact en réponse à la libération du second élément d'actionnement (PB2). Le premier contact (K1-3) et le second contact (K2-3) sont connectés en série dans le trajet d'inspection (202). Le premier élément de retard (C1) est conçu pour retarder l'ouverture du premier contact (K1-3) par un premier temps de retard défini à partir de la libération du premier élément d'actionnement (PB1). Le second élément de retard (C2) est conçu pour retarder l'ouverture du second contact (K2-3) par un second temps de retard défini à partir de la libération du second élément d'actionnement (PB2).
EP20811681.4A 2019-12-19 2020-11-30 Dispositif de commande pour un systeme d'ascenseur dans un mode d'inspection et systeme d'ascenseur Active EP4077188B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19218216 2019-12-19
PCT/EP2020/083859 WO2021121920A1 (fr) 2019-12-19 2020-11-30 Dispositif de commande permettant de commander un système de levage dans un mode d'inspection, et système de levage

Publications (2)

Publication Number Publication Date
EP4077188A1 true EP4077188A1 (fr) 2022-10-26
EP4077188B1 EP4077188B1 (fr) 2024-05-08

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EP20811681.4A Active EP4077188B1 (fr) 2019-12-19 2020-11-30 Dispositif de commande pour un systeme d'ascenseur dans un mode d'inspection et systeme d'ascenseur

Country Status (5)

Country Link
US (1) US20230002192A1 (fr)
EP (1) EP4077188B1 (fr)
CN (1) CN114867677A (fr)
BR (1) BR112022011999A2 (fr)
WO (1) WO2021121920A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230109720A1 (en) * 2020-03-31 2023-04-13 Inventio Ag Safety monitoring device, and method for monitoring the safety of an elevator system
CN113753695A (zh) * 2021-08-23 2021-12-07 杭州西奥电梯有限公司 一种电梯节能方法及节能控制装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984659A (en) * 1988-02-01 1991-01-15 Mitsubishi Denki Kabushiki Kaisha Elevator control apparatus
JPH1179593A (ja) * 1997-09-16 1999-03-23 Toshiba Corp エレベータの非常時救出運転装置
US6738243B2 (en) * 2001-12-07 2004-05-18 Eaton Corporation Apparatus and method for servicing a distribution bus
DE602006017000D1 (de) * 2006-06-30 2010-10-28 Otis Elevator Co Aufzug mit einem flachen Schacht und/oder einem geringen Kopfraum
JP4803560B2 (ja) * 2008-09-11 2011-10-26 東芝エレベータ株式会社 エレベータの安全装置
MY166790A (en) 2009-10-26 2018-07-23 Inventio Ag Safety circuit in an elevator system
EP2452907A1 (fr) * 2010-11-11 2012-05-16 Inventio AG Circuit de sécurité d'ascenseur
EP3230191B1 (fr) * 2014-12-11 2020-03-04 Inventio AG Dispositif de déverrouillage, ascenseur doté d'un dispositif de déverrouillage et procédé d'actionnement d'un dispositif de déverrouillage

Also Published As

Publication number Publication date
EP4077188B1 (fr) 2024-05-08
CN114867677A (zh) 2022-08-05
BR112022011999A2 (pt) 2022-08-30
WO2021121920A1 (fr) 2021-06-24
US20230002192A1 (en) 2023-01-05

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