EP1124751A1 - Method for disconnecting transport systems for persons and a security circuit for transport systems for persons - Google Patents
Method for disconnecting transport systems for persons and a security circuit for transport systems for personsInfo
- Publication number
- EP1124751A1 EP1124751A1 EP99944384A EP99944384A EP1124751A1 EP 1124751 A1 EP1124751 A1 EP 1124751A1 EP 99944384 A EP99944384 A EP 99944384A EP 99944384 A EP99944384 A EP 99944384A EP 1124751 A1 EP1124751 A1 EP 1124751A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- monitoring
- pilot control
- drive monitoring
- safety
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
- B66B29/005—Applications of security monitors
Definitions
- the invention relates to a method for switching off passenger conveyor systems, in particular escalators and moving walks.
- safety chains are used, with limit switches being interconnected in terms of signals, for example for the handrail inlet, the step inlet or the like.
- this method has the disadvantage that other structural units, such as e.g. the error diagnosis cannot be optimally dimensioned, since they are integrated in the safety circuit and consequently their function is influenced by the safety chain or its components.
- Another disadvantage is due to the fact that only an individual evaluation of the connected limit switches is possible. There is no parallel evaluation, since each limit switch interrupts the voltage supply to the other limit switches.
- the object of the invention is to provide a method for switching off passenger conveyor systems and a safety circuit for passenger conveyor systems by means of which, inter alia, the dimensioning of the components can be optimized for fault diagnosis, so that this is or are independent of the otherwise parallel shutdown elements at the end of the safety chain.
- an evaluation of several activated limit switches should be brought about without mutual hindrance occurring.
- This goal is achieved by a method for switching off passenger conveyor systems, in particular escalators and moving walkways, in that functional units are monitored for malfunction by means of switching elements and signal-wise combined to form a safety chain, the signals of the functional units being fed with those from the drive monitoring at least one pilot control unit before the shutdown signal depending on the malfunction of the respective function onsaku and / or the drive monitoring the shutdown contact of the drive or drives is supplied.
- a safety circuit for passenger conveyor systems in particular for escalators and moving walks, consisting of switching elements combined in a safety chain in the area of functional units, at least one drive monitoring, at least one pilot control unit and at least one switch-off contact for the drive or drives, the Signals of the safety chain and those of the drive monitoring can first be fed to the pilot control unit.
- the principle of the safety chain according to the invention no longer leads directly to the shutdown elements of the drive or drives, but indirectly to the same via at least one pilot control unit. This measure can now be used to optimize the dimensioning of the components for fault diagnosis, since they are now independent of the safety circuit.
- the safety relays of the respective pilot control unit can also be controlled by processors from the drive monitoring, optocouplers preferably being used here.
- the preferably redundant pilot control units each contain at least one resistor (series resistor) and at least one capacitor in operative connection with at least one relay coil.
- the drive monitoring is also designed redundantly, so that two microprocessors, which preferably monitor one another, are fed to the respective pilot control units together with the signals from the safety chain.
- the safety chain and / or the drive monitoring are signaled with an operating voltage of 24 V.
- the relay coils are each designed for a voltage of 12 V, although the supply voltage for the circuit part is actually 24 V. This voltage rating is necessary in order to be able to safely switch the respective relay coil on or off despite the low dropout voltage or high pull-in voltage.
- the operating voltage of 24 V is divided between the ratio of the resistors (series resistors) and the relay coils.
- the relay coil When switched on, the relay coil requires a voltage of at least 9 V (even more in the case of elevated temperature conditions). For this reason, the property of the capacitor is used to be conductive when it is switched on. The resistors (series resistors) are thus bridged, i.e. then they are ineffective. When switched on there is a voltage divider ratio in favor of the relay coil, whereby the pull-in voltage is safely reached.
- the capacitor charged during the switch-on process now has no influence on the voltage conditions (very high resistance). Now the influence of the resistance conditions in the entire safety circuit is starting.
- the voltage division ratio is now additionally determined by the series resistors in parallel with the limit switches. The design is carried out in such a way that the fall-back voltage is safely undershot and the available power is no longer sufficient to control the relay coils.
- the single figure shows a safety circuit 1 as it can be used for escalators or moving walks (not shown).
- Limit switches 2, 3, 4, 5 can be seen as they are in the area of functional units that are not shown further, for example for the handrail infeed monitoring, step infeed monitoring or chain break monitoring.
- the signal routing is provided so that it is routed in series over all limit switches 2-5.
- the signal line 6 is operated with an operating voltage of 24 V, the limit switches 2-5 being interconnected to form a so-called safety chain.
- the areas 7, 8 serve the diagnostic function, which is provided decoupled from the safety chain. A galvanic isolation of the different extra-low voltages present in this area is brought about by means of optocouplers 9.
- the safety circuit also includes redundant motor monitoring 10, 11 in the form of two microprocessors.
- Each pilot control unit 12, 13 contains a relay coil 14, 15, a capacitor 16, 17 and a resistor 18, 19.
- the signals from the drive monitoring 10, 11 and from the safety chain 2 - 5 are first routed into the area of the pilot control units 12, 13 before they are fed to the switch-off contacts 20, 21 of the drive (not shown in this example).
- the signal routing is indicated by arrows.
- the relay coils 14, 15 are designed for a voltage of 12 V, although the supply voltage for the circuit part is actually 24 V.
- the operating voltage of 24 V is distributed over the ratio of the resistors 18, 19 and the relay coils 14, 15.
- the safety relays 14, 15 are also controlled by the microprocessors 10, 11. In this example, this is done via optocouplers 22, 23.
- further optocouplers 24, 25 are provided, which are used exclusively for querying the state of the shutdown contacts 20, 21 of the drive.
- the microprocessors 10, 11 not only monitor the respective functional units but also check each other.
- the safety circuit 1 is closed via the reference potentials 26, 27.
- a correct operating state of the respective passenger conveyor systems is guaranteed if the conditions "safety chain closed! And “drive monitoring OK" are fulfilled.
- a limit switch 2, 3, 4 or 5 responds or a fault occurs in the area of the mutually monitoring microprocessors 10, 11, the signal is then transmitted from the respective pilot control unit 12 or 13 to the respective shutdown elements 20, 21, which then leads to an immediate Stopping the drive of the passenger conveyor system leads.
- the safety circuit 1 according to the invention thus allows a functional separation of diagnosis and shutdown, it now being possible to optimally design the components required for the diagnosis, since they are no longer dependent on other components of the safety circuit 1.
- the safety circuit according to the invention furthermore enables the specific deactivation of the pilot control unit (s) 12 or 13 via the safety circuit 1 itself and / or via the microprocessors 10, 11 by means of the optocouplers 22, 23.
Landscapes
- Escalators And Moving Walkways (AREA)
Abstract
The invention relates to a method for disconnecting passenger transport systems, especially escalators and moving walkways. To this end, functional units monitor for malfunctions by using switching elements and are combined to form a security chain using signals. The signals of the functional unit are fed with those from the drive monitoring system to at least one pilot unit before the disconnecting signal is fed to the respective disconnecting contact according to the malfunction of the respective functional unit and/or of the drive monitoring system.
Description
Verfahren zur Abschaltung von Personenförderanlagen sowie Sicherheitskreis für Personenförderanlagen Procedure for switching off passenger conveyor systems and safety circuit for passenger conveyor systems
Die Erfindung betrifft ein Verfahren zur Abschaltung von Personenförderaniagen, insbesondere von Rolltreppen und Rollsteigen.The invention relates to a method for switching off passenger conveyor systems, in particular escalators and moving walks.
Vielfach werden im St.d.T. sogenannte Sicherheitsketten eingesetzt, wobei Endschalter beispielsweise für den Handlaufeinlauf, den Stufeneinlauf oder dgl. signalmäßig zusammengeschaltet werden. Über diese Sicherheitskette wurden die Abschaltelemente des bzw. der Antriebe der jeweiligen Personenförderanlage, insbesondere des Rollsteiges oder der Rolltreppe, unmittelbar angesteuert. Eine Unterbrechung der Sicherheitskette führte somit automatisch zum Stillstand der Rolltreppe bzw. des Rollsteiges.In the St.d.T. So-called safety chains are used, with limit switches being interconnected in terms of signals, for example for the handrail inlet, the step inlet or the like. The shutdown elements of the drive or drives of the respective passenger conveyor system, in particular the escalator or the escalator, were controlled directly via this safety chain. An interruption in the safety chain automatically brought the escalator or moving walk to a standstill.
Dieses Verfahren bringt jedoch den Nachteil mit sich, daß andere Baueinheiten, wie z.B. die Fehlerdiagnose, nicht optimal dimensioniert werden können, da sie in den Sicherheitskreis mit eingebunden sind und demzufolge von der Sicherheitskette bzw. deren Bauteilen in ihrer Funktion beeinflußt werden. Ein weiterer Nachteil ist darin begründet, daß lediglich eine Einzelauswertung der aufgeschalteten Endschalter möglich ist. Eine Paralielauswertung ist nicht gegeben, da jeder Endschalter die Spannungszufuhr zu den jeweils anderen Endschaltern unterbricht.However, this method has the disadvantage that other structural units, such as e.g. the error diagnosis cannot be optimally dimensioned, since they are integrated in the safety circuit and consequently their function is influenced by the safety chain or its components. Another disadvantage is due to the fact that only an individual evaluation of the connected limit switches is possible. There is no parallel evaluation, since each limit switch interrupts the voltage supply to the other limit switches.
Ziel des Erfindungsgegenstandes ist es, ein Verfahren zur Abschaltung von Personenförderanlagen sowie einen Sicherheitskreis für Personenförderanlagen bereit zu stellen, mittels welchen u.a. die Dimensionierung der Bauteile für die Fehlerdiagnose optimiert werden können, so daß diese unabhängig von den ansonsten parallel liegenden Abschaltelementen am Ende der Sicherheitskette ist bzw. sind. Darüber hinaus soll eine Auswertung von mehreren aktivierten Endschaltern herbeigeführt werden, ohne daß gegenseitige Behinderungen auftreten.The object of the invention is to provide a method for switching off passenger conveyor systems and a safety circuit for passenger conveyor systems by means of which, inter alia, the dimensioning of the components can be optimized for fault diagnosis, so that this is or are independent of the otherwise parallel shutdown elements at the end of the safety chain. In addition, an evaluation of several activated limit switches should be brought about without mutual hindrance occurring.
Dieses Ziel wird erreicht durch ein Verfahren zur Abschaltung von Personenförderaniagen, insbesondere von Rolltreppen und Rollsteigen, indem Funktionseinheiten mittels Schaltelementen auf Fehlverhalten überwacht und signalmäßig zu einer Sicherheitskette zusammengefaßt werden, wobei die Signale der Funktionseinheiten mit denjenigen aus der Antriebsüberwachung mindestens einer Vorsteuereinheit zugeführt werden, ehe das Abschaltsignal in Abhängigkeit vom Fehlverhalten der jeweiligen Funkti-
onseinheit und/oder der Antriebsüberwachung dem Abschaltkontakt des bzw. der Antriebe zugeführt wird.This goal is achieved by a method for switching off passenger conveyor systems, in particular escalators and moving walkways, in that functional units are monitored for malfunction by means of switching elements and signal-wise combined to form a safety chain, the signals of the functional units being fed with those from the drive monitoring at least one pilot control unit before the shutdown signal depending on the malfunction of the respective function onseinheit and / or the drive monitoring the shutdown contact of the drive or drives is supplied.
Vorteilhafte Weiterbildungen des erfindungsgemäßen Verfahrens sind den zugehörigen Unteransprüchen zu entnehmen.Advantageous developments of the method according to the invention can be found in the associated subclaims.
Dieses Ziel wird gegenständlich auch erreicht durch einen Sicherheitskreis für Personenförderanlagen, insbesondere für Rolltreppen und Rollsteige, bestehend aus zu einer Sicherheitskette zusammengefaßten Schaltelementen im Bereich von Funktionseinheiten, mindestens einer Antriebsüberwachung, mindestens einer Vorsteuereinheit und mindestens einem Abschaltkontakt für den bzw. die Antriebe, wobei die Signale der Sicherheitskette und diejenigen der Antriebsüberwachung zunächst der Vorsteuereinheit zuführbar sind.This goal is also achieved through a safety circuit for passenger conveyor systems, in particular for escalators and moving walks, consisting of switching elements combined in a safety chain in the area of functional units, at least one drive monitoring, at least one pilot control unit and at least one switch-off contact for the drive or drives, the Signals of the safety chain and those of the drive monitoring can first be fed to the pilot control unit.
Vorteilhafte Weiterbildungen dieses Sicherheitskreises sind den zugehörigen Unteransprüchen zu entnehmen.Advantageous further developments of this security group can be found in the associated subclaims.
Das erfindungsgemäße Prinzip der Sicherheitskette führt nun nicht mehr direkt zu den Abschaltelementen des bzw. der Antriebe, sondern mittelbar über mindestens eine Vorsteuereinheit zu denselben. Durch diese Maßnahme kann nun die Dimensionierung der Bauteile für die Fehlerdiagnose, da nunmehr unabhängig vom Sicherheitskreis, optimiert werden.The principle of the safety chain according to the invention no longer leads directly to the shutdown elements of the drive or drives, but indirectly to the same via at least one pilot control unit. This measure can now be used to optimize the dimensioning of the components for fault diagnosis, since they are now independent of the safety circuit.
Die Sicherheitsrelais der jeweiligen Vorsteuereinheit können zusätzlich zur Sicherheitskette auch durch Prozessoren aus der Antriebsüberwachung angesteuert werden, wobei hier vorzugsweise Optokoppler zum Einsatz gelangen.In addition to the safety chain, the safety relays of the respective pilot control unit can also be controlled by processors from the drive monitoring, optocouplers preferably being used here.
Die Funktion der Sicherheitsrelais, vornehmlich das Abfallen der Abschaltkontakte wird jeweils durch die bereits angesprochenen Mikroprozessoren überwacht, wobei auch hier aus schaltungstechnischen Gründen Optokoppler zum Einsatz gelangen.The function of the safety relays, primarily the dropout of the switch-off contacts, is monitored by the microprocessors already mentioned, whereby optocouplers are also used here for circuitry reasons.
Die vorzugsweise redundant ausgelegten Vorsteuereinheiten beinhalten jeweils mindestens einen Widerstand (Vorwiderstand) und mindestens einen Kondensator in Wirkverbindung mit mindestens einer Relaisspule.
Einem weiteren Gedanken der Erfindung gemäß ist auch die Antriebsüberwachung redundant ausgelegt, so daß zwei Mikroprozessoren, die sich vorzugsweise gegenseitig überwachen, zusammen mit den Signalen aus der Sicherheitskette den jeweiligen Vorsteuereinheiten zugeführt werden.The preferably redundant pilot control units each contain at least one resistor (series resistor) and at least one capacitor in operative connection with at least one relay coil. According to a further idea of the invention, the drive monitoring is also designed redundantly, so that two microprocessors, which preferably monitor one another, are fed to the respective pilot control units together with the signals from the safety chain.
Die Signalführung der Sicherheitskette und/oder der Antriebsüberwachung erfolgt hierbei mit einer Betriebsspannung von 24 V.The safety chain and / or the drive monitoring are signaled with an operating voltage of 24 V.
Die Relaisspulen sind jeweils für eine Spannung von 12 V ausgelegt, obwohl die Versorgungsspannung für den Schaltungsteil eigentlich 24 V beträgt. Diese Spannungsbemessung ist erforderlich, um die jeweilige Relaisspule trotz der geringen Rückfallspannung bzw. hohen Anzugsspannung sicher ab- bzw. einschalten zu können. Die Betriebsspannung von 24 V verteilt sich auf das Verhältnis der Widerstände (Vorwiderstände) und die Relaisspulen.The relay coils are each designed for a voltage of 12 V, although the supply voltage for the circuit part is actually 24 V. This voltage rating is necessary in order to be able to safely switch the respective relay coil on or off despite the low dropout voltage or high pull-in voltage. The operating voltage of 24 V is divided between the ratio of the resistors (series resistors) and the relay coils.
Im Einschaltmoment benötigt die Relaisspule eine Spannung von mindestens 9 V (bei erhöhten Temperaturverhältnissen auch mehr). Aus diesem Grund wird die Eigenschaft des Kondensators genutzt, im Einschaltmoment leitend zu sein. Die Widerstände (Vorwiderstände) werden somit überbrückt, d.h. sie sind dann wirkungslos. Beim Einschalten ergibt sich somit ein Spannungsteilerverhältnis zu Gunsten der Relaisspule, wodurch die Anzugsspannung sicher erreicht wird.When switched on, the relay coil requires a voltage of at least 9 V (even more in the case of elevated temperature conditions). For this reason, the property of the capacitor is used to be conductive when it is switched on. The resistors (series resistors) are thus bridged, i.e. then they are ineffective. When switched on there is a voltage divider ratio in favor of the relay coil, whereby the pull-in voltage is safely reached.
Beim Ausschalten hat der während des Einschaltvorganges geladene Kondensator nunmehr keinen Einfluß auf die Spannungsverhältnisse (sehr hoher Widerstand). Jetzt geht der Einfluß von den Widerstandsverhältnissen im gesamten Sicherheitskreis aus. Das Spannungsteiierverhältnis wird nun zusätzlich durch die Vorwiderstände parallel zu den Endschaltern bestimmt. Die Bemessung wird derart vorgenommen, daß die Rückfallspannung sicher unterschritten wird und die zur Verfügung stehende Leistung nun nicht mehr ausreicht, die Relaisspulen anzusteuern.When switching off, the capacitor charged during the switch-on process now has no influence on the voltage conditions (very high resistance). Now the influence of the resistance conditions in the entire safety circuit is starting. The voltage division ratio is now additionally determined by the series resistors in parallel with the limit switches. The design is carried out in such a way that the fall-back voltage is safely undershot and the available power is no longer sufficient to control the relay coils.
Der Erfindungsgegenstand ist anhand eines Ausführungsbeispieles in der Zeichnung dargestellt und wird wie folgt beschrieben.The subject matter of the invention is illustrated in the drawing using an exemplary embodiment and is described as follows.
Die einzige Figur zeigt einen Sicherheitskreis 1 , wie er für Rolltreppen oder Rollsteige (nicht dargestellt) zur Anwendung gelangen kann. Erkennbar sind Endschalter 2,3,4,5, wie sie im Bereich nicht weiter dargestellter Funktionseinheiten, z.B. für die Handlauf-
einlaufüberwachung, die Stufeneinlaufüberwachung oder aber Kettenbruchüberwa- chung, zum Einsatz gelangen. Die Signalführung ist in diesem Beispiel so vorgesehen, daß sie in Reihe über sämtliche Endschalter 2 - 5 geführt wird. Die Signalleitung 6 wird mit einer Betriebsspannung von 24 V betrieben, wobei die Endschalter 2 - 5 zu einer sogenannten Sicherheitskette zusammengeschaltet sind. Die Bereiche 7,8 dienen hierbei der Diagnosefunktion, die entkoppelt von der Sicherheitskette vorgesehen ist. Mittels Optokopplern 9 wird eine galvanische Trennung der in diesem Bereich anliegenden unterschiedlichen Kleinspannungen herbeigeführt. Der Sicherheitskreis beinhaltet desweiteren eine redundant ausgeführte Motorüberwachung 10,11 in Form zweier Mikroprozessoren. Darüber hinaus ist eine ebenfalls redundant ausgelegte Vorsteuerung 12,13 vorgesehen. Jede Vorsteuereinheit 12, 13 beinhaltet eine Relaisspule 14,15, einen Kondensator 16,17 sowie einen Widerstand 18,19. Die Signale aus der Antriebsüberwachung 10,11 sowie aus der Sicherheitskette 2 - 5 werden, ehe sie den Abschaltkontakten 20,21 des in diesem Beispiel nicht dargestellten Antriebes zugeführt werden, zunächst einmal in den Bereich der Vorsteuereinheiten 12,13 geführt. Die Signalführung ist hierbei durch Pfeile angedeutet. Die Relaisspulen 14,15 sind für eine Spannung von 12 V ausgelegt, obwohl die Versorgungsspannung für den Schaltungsteil eigentlich 24 V beträgt. Diese Spannungsbemessung ist erforderlich, um die jeweilige Relaisspule 14,15 trotz der geringen Rückfallspannung bzw. hohen Anzugsspannung sicher ab- bzw. einschalten zu können. Die Betriebsspannung von 24 V verteilt sich auf das Verhältnis der Widerstände 18,19 und der Relaisspulen 14,15. Die Sicherheitsrelais 14,15 werden zusätzlich zur Sicherheitskette 2-5 auch durch die Mikroprozessoren 10,11 angesteuert . Dies geschieht in diesem Beispiel über Optokoppler 22,23. Darüber hinaus sind weitere Optokoppler 24,25 vorgesehen, die ausschließlich für die Abfrage des Zustandes der Abschaltkontakte 20,21 des Antriebs dienen. Die Mikroprozessoren 10,11 überwachen in diesem Beispiel nicht nur die jeweiligen Funktionseinheiten sondern überprüfen sich auch gegenseitig. Der Sicherheitskreis 1 wird über die Bezugspotentiale 26,27 geschlossen.The single figure shows a safety circuit 1 as it can be used for escalators or moving walks (not shown). Limit switches 2, 3, 4, 5 can be seen as they are in the area of functional units that are not shown further, for example for the handrail infeed monitoring, step infeed monitoring or chain break monitoring. In this example, the signal routing is provided so that it is routed in series over all limit switches 2-5. The signal line 6 is operated with an operating voltage of 24 V, the limit switches 2-5 being interconnected to form a so-called safety chain. The areas 7, 8 serve the diagnostic function, which is provided decoupled from the safety chain. A galvanic isolation of the different extra-low voltages present in this area is brought about by means of optocouplers 9. The safety circuit also includes redundant motor monitoring 10, 11 in the form of two microprocessors. In addition, a precontrol 12, 13, which is also designed redundantly, is provided. Each pilot control unit 12, 13 contains a relay coil 14, 15, a capacitor 16, 17 and a resistor 18, 19. The signals from the drive monitoring 10, 11 and from the safety chain 2 - 5 are first routed into the area of the pilot control units 12, 13 before they are fed to the switch-off contacts 20, 21 of the drive (not shown in this example). The signal routing is indicated by arrows. The relay coils 14, 15 are designed for a voltage of 12 V, although the supply voltage for the circuit part is actually 24 V. This voltage rating is necessary in order to be able to switch the respective relay coil 14, 15 off or on in spite of the low dropout voltage or high pull-in voltage. The operating voltage of 24 V is distributed over the ratio of the resistors 18, 19 and the relay coils 14, 15. In addition to the safety chain 2-5, the safety relays 14, 15 are also controlled by the microprocessors 10, 11. In this example, this is done via optocouplers 22, 23. In addition, further optocouplers 24, 25 are provided, which are used exclusively for querying the state of the shutdown contacts 20, 21 of the drive. In this example, the microprocessors 10, 11 not only monitor the respective functional units but also check each other. The safety circuit 1 is closed via the reference potentials 26, 27.
Ein ordnungsgemäßer Betriebszustand der jeweiligen Personenförderanlagen ist gewährleistet, wenn die Bedingungen „Sicherheitskette geschlossen!" und „Antriebsüberwachung in Ordnung" erfüllt sind. Beim Ansprechen eines Endschalters 2,3,4 oder 5 oder einer Störung im Bereich der sich gegenseitig überwachenden Mikroprozessoren 10,11 wird das Signal dann aus der jeweiligen Vorsteuereinheit 12 bzw. 13 auf die jeweiligen Abschaltelemente 20,21 übertragen, was dann zu einem unverzüglichen Stillsetzen des Antriebes der Personenförderanlage führt.
Der erfindungsgemäße Sicherheitskreis 1 erlaubt somit eine funktionale Trennung von Diagnose und Abschaltung, wobei nunmehr die für die Diagnose erforderlichen Bauteile optimal ausgelegt werden können, da sie in keiner Abhängigkeit mehr zu anderen Bauteilen des Sicherheitskreises 1 stehen.A correct operating state of the respective passenger conveyor systems is guaranteed if the conditions "safety chain closed!" And "drive monitoring OK" are fulfilled. When a limit switch 2, 3, 4 or 5 responds or a fault occurs in the area of the mutually monitoring microprocessors 10, 11, the signal is then transmitted from the respective pilot control unit 12 or 13 to the respective shutdown elements 20, 21, which then leads to an immediate Stopping the drive of the passenger conveyor system leads. The safety circuit 1 according to the invention thus allows a functional separation of diagnosis and shutdown, it now being possible to optimally design the components required for the diagnosis, since they are no longer dependent on other components of the safety circuit 1.
Der erfindungsgemäße Sicherheitskreis ermöglicht desweiteren die gezielte Abschaltung des / der Vorsteuereinheiten 12 bzw. 13 über den Sicherheitskreis 1 selber und / oder über die Mikroprozessoren 10, 11 mittels der Optokoppler 22, 23.
The safety circuit according to the invention furthermore enables the specific deactivation of the pilot control unit (s) 12 or 13 via the safety circuit 1 itself and / or via the microprocessors 10, 11 by means of the optocouplers 22, 23.
Claims
1. Verfahren zur Abschaltung von Personenförderanlagen, insbesondere von Rolltreppen und Rollsteigen, indem Funktionseinheiten mittels Schaltelementen (2,3,4,5) auf Fehlverhaiten überwacht und signalmäßig zu einer Sicherheitskette (6) zusammengefaßt werden, wobei die Signale der Funktionseinheiten mit denjenigen aus der Antriebsüberwachung (10,11) mindestens einer Vorsteuereinheit (12,13) zugeführt werden, ehe das Abschaltsignal in Abhängigkeit vom Fehlverhalten der jeweiligen Funktionseinheit und/oder der Antriebsüberwachung (10,11) dem Abschaltkontakt des bzw. der Antriebe (20,21) zugeführt wird.1. Method for switching off passenger conveyors, in particular escalators and moving walks, by monitoring functional units by means of switching elements (2, 3, 4, 5) for misconduct and signaling to form a safety chain (6), the signals of the functional units being those from the Drive monitoring (10, 11) are fed to at least one pilot control unit (12, 13) before the shutdown signal is fed to the shutdown contact of the drive (s) (20, 21) depending on the malfunction of the respective functional unit and / or the drive monitoring (10, 11) becomes.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß das jeweilige Abschaltsignal über eine mit einem Widerstand (18,19) und einem Kondensator (16,17) in Wirkverbindung stehende Relaisspule (14,15) geführt wird, ehe das Signal den Abschaltkoπtakt (20,21 ) erreicht.2. The method according to claim 1, characterized in that the respective switch-off signal is conducted via a relay coil (14, 15) which is operatively connected to a resistor (18, 19) and a capacitor (16, 17) before the signal makes the switch-off contact ( 20.21) reached.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Antriebsüberwachung (10,11 ) redundant ausgelegt wird.3. The method according to claim 1 or 2, characterized in that the drive monitoring (10,11) is designed redundantly.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Signalführung der Funktionseinheiten mindestens zwei Vorsteuereinheiten (12,13) zugeführt wird.4. The method according to any one of claims 1 to 3, characterized in that the signal routing of the functional units is supplied to at least two pilot control units (12, 13).
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Signalführung (6) der Sicherheitskette und/oder der Antriebsüberwachung (10,11 ) mit einer Betriebsspannung von 24 V erfolgt.5. The method according to any one of claims 1 to 4, characterized in that the signal routing (6) of the safety chain and / or the drive monitoring (10,11) is carried out with an operating voltage of 24 V.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß sich die Betriebsspannung auf das Verhältnis der Widerstände (18,19) und der Relaisspulen (14,15) aufteilt.6. The method according to any one of claims 1 to 5, characterized in that the operating voltage is divided into the ratio of the resistors (18, 19) and the relay coils (14, 15).
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß, die Ansteuerung der durch Mikroprozessoren gebildeten Antriebsüberwachung (10,11) durch Optokoppler (22,23) herbeigeführt wird. 7. The method according to any one of claims 1 to 6, characterized in that the control of the drive monitoring (10, 11) formed by microprocessors is brought about by optocouplers (22, 23).
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Funktion der Relaisspulen (14,15) durch die Antriebsüberwachung (10,11), insbesondere die Mikroprozessoren überprüft wird.8. The method according to any one of claims 1 to 7, characterized in that the function of the relay coils (14, 15) is checked by the drive monitoring (10, 11), in particular the microprocessors.
9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Überwachung der Relaisspulen (14,15), insbesondere das Abfallen der Abschaltkontakte (20, 21) über Optokoppler (24,25) vorgenommen wird.9. The method according to any one of claims 1 to 8, characterized in that the monitoring of the relay coils (14, 15), in particular the dropout of the cut-off contacts (20, 21) is carried out via optocouplers (24, 25).
10. Sicherheitskreis für Personenförderanlagen, insbesondere für Rolltreppen und Rollsteige, bestehend aus zu einer Sicherheitskette (6) zusammengefaßten Schaltelementen (2,3,4,5,) im Bereich von Funktionseinheiten, mindestens einer Antriebsüberwachung (10,11), mindestens einer Vorsteuereinheit (12,13) und mindestens einem Abschaltkontakt (20,21 ) für den bzw. die Antriebe, wobei die Signale der Sicherheitskette (6) und diejenigen der Antriebsüberwachung (10,11) zunächst der Vorsteuereinheit (12,13) zuführbar sind.10. Safety circuit for passenger conveyor systems, in particular for escalators and moving walks, consisting of switching elements (2, 3, 4, 5,) combined to form a safety chain (6) in the area of functional units, at least one drive monitor (10, 11), at least one pilot control unit ( 12, 13) and at least one switch-off contact (20, 21) for the drive or drives, the signals of the safety chain (6) and those of the drive monitoring (10, 11) initially being able to be fed to the pilot control unit (12, 13).
11. Sicherheitskreis nach Anspruch 10, gekennzeichnet durch redundante Ausführung einerseits der Antriebsüberwachung (10,11) und andererseits der Vorsteuereinheit (12,13).11. Safety circuit according to claim 10, characterized by redundant design on the one hand the drive monitoring (10,11) and on the other hand the pilot control unit (12,13).
12. Sicherheitskreis nach Anspruch 10 oder 11 , dadurch gekennzeichnet, daß die jeweilige Vorsteuereinheit (12,13) neben einer Relaisspule (14,15) einen Kondensator (16,17) und einen Widerstand (18,19) beinhaltet.12. Safety circuit according to claim 10 or 11, characterized in that the respective pilot unit (12, 13) contains a capacitor (16, 17) and a resistor (18, 19) in addition to a relay coil (14, 15).
13. Sicherheitskreis nach einem der Ansprüche 10 bis 12, gekennzeichnet durch Optokoppler (22,23) zur Ansteuerung der Vorsteuereinheiten (12,13). 13. Safety circuit according to one of claims 10 to 12, characterized by optocouplers (22, 23) for controlling the pilot control units (12, 13).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19849238 | 1998-10-26 | ||
| DE19849238A DE19849238C1 (en) | 1998-10-26 | 1998-10-26 | Safety cut-out method for escalator or moving walkway has safety fault signals provided by safety chain combined with drive monitoring signals for operation of drive cut-out contacts |
| PCT/EP1999/005927 WO2000024664A1 (en) | 1998-10-26 | 1999-08-12 | Method for disconnecting transport systems for persons and a security circuit for transport systems for persons |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1124751A1 true EP1124751A1 (en) | 2001-08-22 |
| EP1124751B1 EP1124751B1 (en) | 2003-02-05 |
Family
ID=7885626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99944384A Expired - Lifetime EP1124751B1 (en) | 1998-10-26 | 1999-08-12 | Method for disconnecting transport systems for persons and a security circuit for transport systems for persons |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6758319B1 (en) |
| EP (1) | EP1124751B1 (en) |
| JP (1) | JP2002528359A (en) |
| CN (1) | CN1113803C (en) |
| AU (1) | AU5733999A (en) |
| DE (2) | DE19849238C1 (en) |
| HK (1) | HK1039607B (en) |
| WO (1) | WO2000024664A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1323661B1 (en) * | 2001-12-24 | 2018-10-10 | Inventio AG | Method to stop a passenger conveying device |
| CN1239378C (en) | 2001-12-24 | 2006-02-01 | 因温特奥股份公司 | Method for stopping personnel transport equipment operation |
| WO2005049467A1 (en) * | 2003-11-19 | 2005-06-02 | Mitsubishi Denki Kabushiki Kaisha | Elevator controller |
| US7407048B2 (en) * | 2006-08-21 | 2008-08-05 | Kone Corporation | Safety switch and method of checked redundancy |
| WO2009073025A1 (en) * | 2007-12-05 | 2009-06-11 | Otis Elevator Company | Control strategy for operating two elevator cars in a single hoistway |
| CN101746662B (en) * | 2008-12-17 | 2013-03-20 | 上海三菱电梯有限公司 | Escalator |
| EP2697146B1 (en) * | 2011-04-15 | 2020-10-21 | Otis Elevator Company | Elevator drive power supply control |
| DE102012003178B4 (en) | 2012-02-17 | 2018-03-22 | Kone Corp. | Device for monitoring the function of an escalator or moving walkway |
| TWI622548B (en) * | 2012-12-13 | 2018-05-01 | 伊文修股份有限公司 | Monitoring device for a transport installation for persons, trasnport installation for persons, and method of monitoring a transport installation for persons |
| CN103224189A (en) * | 2013-03-18 | 2013-07-31 | 康力电梯股份有限公司 | Staircase and sidewalk safety monitoring system |
| CN103274284B (en) * | 2013-05-24 | 2015-01-07 | 康力电梯股份有限公司 | Escalator and sidewalk functional safety electronic monitoring device |
| WO2015085527A1 (en) | 2013-12-12 | 2015-06-18 | Otis Elevator Company | Safety system for use in a drive system |
| CN104058309B (en) * | 2014-06-23 | 2016-05-04 | 重庆市特种设备检测研究院 | A kind of electric safety return circuit of elevator redundancy and stop control method |
| FR3039689B1 (en) * | 2015-07-30 | 2018-12-07 | Getraline | MONITORING ASSEMBLY FOR ELECTRICAL EQUIPMENT |
| CN108025885B (en) * | 2015-09-10 | 2020-01-10 | 奥的斯电梯公司 | Apparatus and method for ground fault detection |
| WO2017081113A1 (en) | 2015-11-12 | 2017-05-18 | Inventio Ag | Monitoring unit for an elevator system, and method |
| US11618648B2 (en) | 2017-10-31 | 2023-04-04 | Inventio Ag | Safety monitoring device for monitoring safety-related states in a passenger conveyor system and method for operating same |
| EP3986822A1 (en) * | 2019-06-21 | 2022-04-27 | Inventio AG | Device for connecting a control device of a passenger-conveying system |
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|---|---|---|---|---|
| US3580376A (en) * | 1969-01-02 | 1971-05-25 | Reliance Electric Co | Escalator system having fault indicator |
| DE3312777A1 (en) * | 1983-04-09 | 1984-10-11 | Sistemco N.V., Willemstad, Curacao, Niederländische Antillen | CONTROL ARRANGEMENT FOR A POWERED ROTARY SHELF |
| DE3343303A1 (en) * | 1983-11-30 | 1985-08-08 | Thyssen-M.A.N. Aufzüge GmbH, 7303 Neuhausen | MONITORING CIRCUIT FOR THE SAFETY CONTACTS OF ELEVATOR |
| GB8630674D0 (en) | 1986-12-23 | 1987-02-04 | Qualter Hall & Co Ltd | Microprocessor-based controllers |
| JPH0729749B2 (en) | 1989-07-21 | 1995-04-05 | 株式会社日立製作所 | Passenger conveyor control device |
| JPH0361291A (en) * | 1989-07-31 | 1991-03-18 | Mitsubishi Electric Corp | Passenger conveyor control device |
| JPH0747460B2 (en) | 1990-03-02 | 1995-05-24 | 株式会社日立製作所 | Control device for passenger compare |
| US5186300A (en) * | 1992-07-06 | 1993-02-16 | Otis Elevator Company | Starting circuit and method for escalators and moving walks |
| US5601178A (en) * | 1995-03-16 | 1997-02-11 | Zaharia; Vlad | Detection of escalator safety circuit component operability |
| US5708416A (en) * | 1995-04-28 | 1998-01-13 | Otis Elevator Company | Wireless detection or control arrangement for escalator or moving walk |
| DE19754141C2 (en) * | 1997-12-04 | 2000-05-25 | O & K Rolltreppen Gmbh | Safety device for escalators and moving walks |
-
1998
- 1998-10-26 DE DE19849238A patent/DE19849238C1/en not_active Expired - Lifetime
-
1999
- 1999-08-12 EP EP99944384A patent/EP1124751B1/en not_active Expired - Lifetime
- 1999-08-12 US US09/830,420 patent/US6758319B1/en not_active Expired - Lifetime
- 1999-08-12 AU AU57339/99A patent/AU5733999A/en not_active Abandoned
- 1999-08-12 DE DE59904244T patent/DE59904244D1/en not_active Expired - Lifetime
- 1999-08-12 WO PCT/EP1999/005927 patent/WO2000024664A1/en active IP Right Grant
- 1999-08-12 JP JP2000578240A patent/JP2002528359A/en active Pending
- 1999-08-12 CN CN99812664A patent/CN1113803C/en not_active Expired - Fee Related
-
2002
- 2002-02-08 HK HK02100994.4A patent/HK1039607B/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0024664A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU5733999A (en) | 2000-05-15 |
| DE19849238C1 (en) | 2000-03-09 |
| HK1039607A1 (en) | 2002-05-03 |
| US6758319B1 (en) | 2004-07-06 |
| HK1039607B (en) | 2003-10-24 |
| DE59904244D1 (en) | 2003-03-13 |
| CN1324323A (en) | 2001-11-28 |
| CN1113803C (en) | 2003-07-09 |
| WO2000024664A1 (en) | 2000-05-04 |
| JP2002528359A (en) | 2002-09-03 |
| EP1124751B1 (en) | 2003-02-05 |
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