EP2089892A1 - Dispositif à commutateur de sécurité - Google Patents

Dispositif à commutateur de sécurité

Info

Publication number
EP2089892A1
EP2089892A1 EP07846559A EP07846559A EP2089892A1 EP 2089892 A1 EP2089892 A1 EP 2089892A1 EP 07846559 A EP07846559 A EP 07846559A EP 07846559 A EP07846559 A EP 07846559A EP 2089892 A1 EP2089892 A1 EP 2089892A1
Authority
EP
European Patent Office
Prior art keywords
circuit
safety
switch device
switching
switching element
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
EP07846559A
Other languages
German (de)
English (en)
Other versions
EP2089892B1 (fr
Inventor
Carl Meinherz
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.)
Cedes AG
Original Assignee
Cedes 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 Cedes AG filed Critical Cedes AG
Publication of EP2089892A1 publication Critical patent/EP2089892A1/fr
Application granted granted Critical
Publication of EP2089892B1 publication Critical patent/EP2089892B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
    • H01H47/005—Safety control circuits therefor, e.g. chain of relays mutually monitoring each other

Definitions

  • a monitoring contact can be used to determine whether the relay for the work circuit is working properly. If the normally open contacts are open, the monitoring contact must be closed. Regularly certified relays are used which guarantee that the normally open contacts are open when the monitoring contact is closed and vice versa. This makes it possible to achieve a required security level, eg 4.
  • the invention is first of a
  • Safety switch device for switching on and off a power supply of a load, which comprises at least one controllable switching element, in particular a relay and a safety circuit for checking a switching state of the switching element.
  • the switching element is designed as a changeover switch, such that a first contact with either a second or third contact by a switching operation of the switch is electrically connected. By doing so, e.g. With a single relay, a load circuit and a safety circuit can be realized as separately operating circuits. Because a "switch" can ensure that either the safety circuit or the load circuit is closed. When the closed safety circuit is detected, the load circuit must be open.
  • Safety circuit and load circuit take place. Because with the switch, both poles of a load circuit can be opened, whereas two poles of a safety circuit can be closed and vice versa, so that both circuits can be operated completely independently of each other.
  • the respective second contact with the safety circuit and the respective third contact with the load is electrically connected.
  • "normally closed" contacts of the safety circuit and the "normally open” contacts of the load can be assigned to the controllable switching elements connected in series.
  • electrical decoupling means are provided to decouple the safety circuit from the power supply of the load, if the power supply is switched to the safety circuit.
  • This can be realized, for example, via capacitances, whereby a high-pass effect can be achieved, which filters out DC components, eg, Y1 or Y2 become capacitors used.
  • a transducer such as an optocoupler or a transformer or a transformer.
  • At least two series circuits of at least two controllable switching elements are provided.
  • series connection is preferably understood a series connection of switching contacts.
  • a load can be switched via the respective series connection.
  • a safety circuit is formed over each series connection of a plurality of series circuits.
  • each series connection can be checked.
  • each series connection is part of a separate safety circuit.
  • an actuator in each case a controllable switching element of the first and second series circuit simultaneously.
  • the described procedure has the advantage that the load circuit 101, 102 is completely disconnected from the safety circuit 103, 104 during normal operation. This is achieved by the switches 1, 2, 21, 22. It can be ensured that a test signal of the signal source 5 is never applied to the load circuit 101, 102. This can be done by the fact that the test signal of the signal source 5 is applied only when after known switching time of the relay 1, 2, 21, 22 of the switching operation is carried out safely.
  • the four relays are controlled by four coils 31, 41. In each case two relay contact groups are thus connected to a common coil 31, 41.
  • Each series connection of two relays is electrically connected to a monitoring circuit consisting of the driver 11 and the filter 10 and the protective elements 7 and 8 or an overvoltage protection 9.
  • different test signals from the signal source 5 are fed.
  • different filters 10 and more filters 10 may be used.
  • a microcontroller is used for a current evaluation.

Landscapes

  • Keying Circuit Devices (AREA)
  • Relay Circuits (AREA)

Abstract

L'invention propose un dispositif à commutateur de sécurité pour mettre en circuit et hors circuit une alimentation électrique d'une charge, comprenant au moins un élément (1, 2, 21, 22) de commutation commandable, notamment un relais, ainsi qu'un circuit (103, 104) de sécurité pour contrôler un état de commutation de l'élément de commutation. Conformément à l'invention, l'élément (1, 2, 21, 22) de commutation est réalisé sous la forme d'un inverseur de telle sorte qu'un premier contact (1c, 2c) est relié électriquement soit avec un deuxième (1b, 2b), soit avec un troisième contact (1a, 2a) par une opération de commutation. L'invention propose également un procédé pour utiliser un dispositif à commutateur de sécurité.
EP20070846559 2006-11-10 2007-11-12 Dispositif à commutateur de sécurité Active EP2089892B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006053397A DE102006053397A1 (de) 2006-11-10 2006-11-10 Sicherheitsschaltereinrichtung
PCT/EP2007/009762 WO2008055701A1 (fr) 2006-11-10 2007-11-12 Dispositif à commutateur de sécurité

Publications (2)

Publication Number Publication Date
EP2089892A1 true EP2089892A1 (fr) 2009-08-19
EP2089892B1 EP2089892B1 (fr) 2013-05-01

Family

ID=39123885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070846559 Active EP2089892B1 (fr) 2006-11-10 2007-11-12 Dispositif à commutateur de sécurité

Country Status (6)

Country Link
US (1) US8035942B2 (fr)
EP (1) EP2089892B1 (fr)
CN (1) CN101578678B (fr)
DE (1) DE102006053397A1 (fr)
DK (1) DK2089892T3 (fr)
WO (1) WO2008055701A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190096611A1 (en) * 2017-09-27 2019-03-28 Rockwell Automation Switzerland Gmbh Safety Switch

Families Citing this family (14)

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Publication number Priority date Publication date Assignee Title
CN101746662B (zh) * 2008-12-17 2013-03-20 上海三菱电梯有限公司 自动扶梯
DE102010036838A1 (de) * 2010-08-04 2012-02-09 Schaefer Gmbh Selbstüberwachende Tasterschaltung und zugehöriges Überwachungsverfahren
TWI622548B (zh) * 2012-12-13 2018-05-01 伊文修股份有限公司 用於人員輸送設備的監視裝置、人員輸送設備、以及用於監視人員輸送設備之方法
JP6229173B2 (ja) * 2013-09-30 2017-11-15 パナソニックＩｐマネジメント株式会社 電源切替装置及び蓄電池システム
JP6390454B2 (ja) * 2015-02-02 2018-09-19 オムロン株式会社 継電ユニット、および継電回路の制御方法
JP6435891B2 (ja) * 2015-02-02 2018-12-12 オムロン株式会社 継電ユニット、継電ユニットの制御方法
JP6459573B2 (ja) * 2015-02-02 2019-01-30 オムロン株式会社 継電ユニット
JP6428323B2 (ja) * 2015-02-02 2018-11-28 オムロン株式会社 継電ユニット、継電ユニットの制御方法
DE102015104211A1 (de) 2015-03-20 2016-09-22 Pilz Gmbh & Co. Kg Sicherheitsschaltgerät zum fehlersicheren Abschalten einer elektrischen Last
US10886086B2 (en) * 2015-12-18 2021-01-05 Pepperl+Fuchs Se Methods and apparatuses for monitoring the functionality of redundantly interconnected contacts
EP3196913B1 (fr) * 2016-01-20 2019-04-10 Schneider Electric Industries SAS Circuit a relais et procede pour effectuer un autotest d'un circuit a relais
US11022651B2 (en) 2017-03-02 2021-06-01 Vacon Oy Arrangement and method for a safe turn off
US10475612B2 (en) 2017-04-27 2019-11-12 Rockwell Automation Asia Pacific Business Center, Pte. Ltd. Electrical relay system with failure detection
EP3557598B1 (fr) * 2018-04-20 2020-10-28 EUCHNER GmbH + Co. KG Commutateur de sécurité

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US3571800A (en) * 1967-09-15 1971-03-23 Nasa Plural position switch status and operativeness checker
US4045714A (en) * 1974-07-31 1977-08-30 Macleod Donald A Remote switch control and status indicator system
US4028498A (en) * 1974-10-07 1977-06-07 Solid State Systems, Inc. Private automatic branch exchange system and apparatus
DE2729480A1 (de) 1977-06-30 1979-01-11 Kloeckner Humboldt Deutz Ag Verfahren und vorrichtung zur ueberwachung und/oder erweiterung von schaltanlagen
DE3642233C2 (de) * 1986-12-10 1994-03-24 Steuerungselektronik Schoefman Einrichtung für die Selbstüberwachung von Relaiskontakten
US5065104A (en) * 1987-02-17 1991-11-12 Alexander Kusko Fault sensing with an artificial reference potential provided by an isolated capacitance effect
GB2203907A (en) 1987-03-09 1988-10-26 Qualcast Garden Prod Testing residual current circuit breakers
EP0299115B1 (fr) * 1987-07-15 1992-10-14 North American Philips Corporation Circuit de protection contre un électrochoc avec un loquet électrique pour un petit appareil
US4916628A (en) * 1988-07-08 1990-04-10 Commonwealth Edison Company Microprocessor-based control/status monitoring arrangement
DE3909613A1 (de) * 1989-03-23 1990-09-27 Hans Turck Gmbh & Co Kg Schaltungsanordnung zur selbstueberwachung eines schaltgeraetes fuer einen lastkreis
DE69328876T2 (de) 1993-11-19 2000-11-09 Nippon Signal Co Ltd Ladungssteuerschaltung
US5612994A (en) * 1995-02-22 1997-03-18 Chen; Jhy-Ping Interphone system
EP1202313A1 (fr) 2000-10-23 2002-05-02 Safecom Ag Dispositif de sécurité pour surveiller la position des pièces de contact mécanique
DE10325363A1 (de) * 2003-05-23 2005-01-13 Pilz Gmbh & Co. Sicherheitsschaltgerät zum fehlersicheren Abschalten eines elektrischen Verbrauchers sowie entsprechendes Verfahren
EP1484780A1 (fr) * 2003-06-03 2004-12-08 Siemens Aktiengesellschaft Dispositif de commande pour des éléments critiques pour la sécurité et procédé correspondant
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190096611A1 (en) * 2017-09-27 2019-03-28 Rockwell Automation Switzerland Gmbh Safety Switch

Also Published As

Publication number Publication date
US8035942B2 (en) 2011-10-11
CN101578678B (zh) 2012-08-15
WO2008055701A1 (fr) 2008-05-15
DK2089892T3 (da) 2013-07-29
US20090251835A1 (en) 2009-10-08
CN101578678A (zh) 2009-11-11
DE102006053397A1 (de) 2008-05-15
EP2089892B1 (fr) 2013-05-01

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