EP0294794B1 - Verfahren zum Lösen der Kontakte eines klebenden Relais sowie Schaltungsanordnung zur Durchführung des Verfahrens - Google Patents

Verfahren zum Lösen der Kontakte eines klebenden Relais sowie Schaltungsanordnung zur Durchführung des Verfahrens Download PDF

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Publication number
EP0294794B1
EP0294794B1 EP88109154A EP88109154A EP0294794B1 EP 0294794 B1 EP0294794 B1 EP 0294794B1 EP 88109154 A EP88109154 A EP 88109154A EP 88109154 A EP88109154 A EP 88109154A EP 0294794 B1 EP0294794 B1 EP 0294794B1
Authority
EP
European Patent Office
Prior art keywords
relay
circuit
contacts
signal
voltage
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.)
Expired - Lifetime
Application number
EP88109154A
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German (de)
English (en)
French (fr)
Other versions
EP0294794A2 (de
EP0294794A3 (en
Inventor
Norbert Nickolai
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0294794A2 publication Critical patent/EP0294794A2/de
Publication of EP0294794A3 publication Critical patent/EP0294794A3/de
Application granted granted Critical
Publication of EP0294794B1 publication Critical patent/EP0294794B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • 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
    • 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
    • H01H2047/003—Detecting welded contacts and applying weld break pulses to coil

Definitions

  • the invention relates to a circuit arrangement for releasing the contacts of an adhesive relay according to the preamble of claim 1 and is based on FR-A-2'565 '430.
  • a relay is also already known in which, to reduce the risk of welding, at least one of the two contacts is exposed to vibrations, in particular during the time the contact is made.
  • the parts exposed to vibrations are matched in their mass and possibly the data of their elastic fastening so that they are in resonance or almost in resonance with the mains frequency or a harmonic of the mains frequency.
  • FR-A-25 65 430 a circuit arrangement for detecting a relay fault is known, in which the load signal to be switched by the relay and the control signal of the relay are fed to an error detection circuit.
  • An AC voltage or a pulsating DC voltage with a frequency corresponding to the natural frequency of the mechanical relay structure is preferably applied to the winding of the relay coil. This causes the relay structure to vibrate naturally.
  • a time circuit is preferably provided between the output of the comparison circuit and the control input of the switching device, which output signal of the comparison circuit indicating a sticking together of the relay contacts only for a specific, predetermined period of time switches through to the control input of the switching device, so that the AC voltage or the pulsating DC voltage is advantageously only applied to the winding of the relay coil for a specific, predetermined period of time.
  • the circuit arrangement according to the invention has a comparison circuit 10, which is driven at its one input 12 by the control signal of the relay 14 shown in dashed lines in the figure and is connected with its other input 16 to the load circuit 18 to be switched by the relay 14.
  • sticking together of the relay contacts 20 and 22 is determined by comparing the profile of the load signal to be switched by the relay 14 with the profile of the control signal of the relay 14. If the load signal to be switched by the relay 14 does not follow the control signal of the relay, taking into account the switching time of the relay 14, this means that the two relay contacts 20 and 22 are glued together.
  • the output 24 of the comparison circuit 10 is connected to the input 26 of a time circuit 28.
  • the timer 28 is intended to prevent the relay armature 34 from shaking continuously if the connection layer between the relay contacts 20 and 22 does not break even when the relay armature 34 is shaken several times.
  • the switching device 32 when the relay 14 is functioning, switches the control signal of the relay 14, which is present at its one input 36, to the control input 38 of the relay driver 40, it connects the output 42 of an AC voltage generator 44 in the event that the relay contacts 20 and 22 are glued together with the control input 38 of the relay driver 40.
  • the alternating voltage generated by the alternating voltage generator 44 causes the relay driver 40 to be switched alternately conductive and blocking.
  • one of the output voltage of the AC voltage generator is applied to the winding of the relay coil 46 44 corresponding AC voltage applied.
  • the relay coil generates an alternating magnetic field, which exerts a shaking force on the relay armature 34.
  • the relay armature 34 is preferably excited with the natural frequency of the mechanical structure of the relay 14 in order to set the relay in natural oscillations.

Landscapes

  • Relay Circuits (AREA)
EP88109154A 1987-06-10 1988-06-08 Verfahren zum Lösen der Kontakte eines klebenden Relais sowie Schaltungsanordnung zur Durchführung des Verfahrens Expired - Lifetime EP0294794B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3719298 1987-06-10
DE19873719298 DE3719298A1 (de) 1987-06-10 1987-06-10 Verfahren zum loesen der kontakte eines klebenden relais sowie schaltungsanordnung zur durchfuehrung des verfahrens

Publications (3)

Publication Number Publication Date
EP0294794A2 EP0294794A2 (de) 1988-12-14
EP0294794A3 EP0294794A3 (en) 1990-08-29
EP0294794B1 true EP0294794B1 (de) 1993-08-11

Family

ID=6329387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109154A Expired - Lifetime EP0294794B1 (de) 1987-06-10 1988-06-08 Verfahren zum Lösen der Kontakte eines klebenden Relais sowie Schaltungsanordnung zur Durchführung des Verfahrens

Country Status (4)

Country Link
US (1) US4914315A (enrdf_load_stackoverflow)
EP (1) EP0294794B1 (enrdf_load_stackoverflow)
DE (2) DE3719298A1 (enrdf_load_stackoverflow)
ES (1) ES2043728T3 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160106B4 (de) * 2000-12-08 2006-06-14 Toyota Jidosha K.K., Toyota Relaisverschweißungserfassungsvorrichtung und -erfassungsverfahren

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JPH01186182A (ja) * 1988-01-19 1989-07-25 Fanuc Ltd サーボモータの制御装置
JP2527041B2 (ja) * 1989-07-31 1996-08-21 日本電気株式会社 電源回路
JP2669905B2 (ja) * 1989-09-01 1997-10-29 ファナック株式会社 リレーの溶着検出方法
CA2093064C (en) * 1992-06-10 1998-08-11 Dennis W. Waggamon Contact status monitor
JP2879807B2 (ja) * 1992-07-30 1999-04-05 矢崎総業株式会社 スイッチの腐食防止回路
US5363669A (en) * 1992-11-18 1994-11-15 Whirlpool Corporation Defrost cycle controller
DE19632347A1 (de) * 1996-08-10 1998-02-12 Kaco Elektrotechnik Gmbh Schalter, insbesondere Relais
JP3724207B2 (ja) * 1997-09-08 2005-12-07 松下電器産業株式会社 継電器の制御回路
DE19930521A1 (de) * 1999-07-05 2001-01-11 Volkswagen Ag Relaisbauteil
EP1421327B1 (de) 2001-08-30 2010-06-30 Krauss-Maffei Wegmann GmbH & Co. KG Artilleriegeschütz mit einer auf einem trägerfahrzeug angeordneten schweren waffe
DE10300828C5 (de) † 2003-01-10 2009-06-10 Dorma Gmbh + Co. Kg Ansteuerung für einen mit Gleichstrom betriebenen Türöffner und Verfahren zur Ansteuerung eines mit Gleichstrom betriebenen Türöffners
JP3625474B1 (ja) * 2004-04-05 2005-03-02 富士通テン株式会社 接点腐食防止回路
JP4599260B2 (ja) * 2004-09-28 2010-12-15 プライムアースＥｖエナジー株式会社 電源制御装置、電源制御方法、プログラム及び記録媒体
US7298148B2 (en) * 2006-03-02 2007-11-20 Emerson Electric Co. Relay controller
US20080055024A1 (en) * 2006-08-31 2008-03-06 Motorola, Inc. System and method for protection of unplanned state changes of a magnetic latching relay
US20100157502A1 (en) * 2008-12-18 2010-06-24 Caterpillar Inc. System for decoupling a power source from a load
US8975787B2 (en) * 2009-05-08 2015-03-10 Computer Performance, Inc. Reduced parts count isolated AC current switching and sensing
FR2959593B1 (fr) * 2010-04-30 2012-12-28 Schneider Electric Ind Sas Appareil de commutation electromagnetique de type contacteur et procede d'ouverture d'un tel appareil.
JP2013528313A (ja) * 2010-06-08 2013-07-08 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ フェイルセーフな照明システム
DE102012222129A1 (de) * 2012-12-04 2014-06-05 Robert Bosch Gmbh Verfahren zum Betrieb eines Ansteuerkreises eines elektromagnetischen Schalters
CN104850043A (zh) * 2015-04-27 2015-08-19 浙江恒自电力自动化设备有限公司 微机保护测控装置
CN107275157B (zh) * 2017-07-24 2020-05-26 浙江英洛华新能源科技有限公司 一种继电器运动部件检测电路及具有该电路的继电器
KR102628966B1 (ko) * 2019-11-26 2024-01-23 주식회사 엘지에너지솔루션 회로 진단 장치 및 이를 포함하는 배터리 팩
CN113223895B (zh) * 2020-01-21 2022-08-12 株洲中车时代电气股份有限公司 一种继电器的输出安全控制电路
DE102020007452B4 (de) 2020-12-07 2023-06-22 Daimler Truck AG Verfahren zum Betreiben einer Schalteinrichtung eines elektrischen Netzes, sowie Schalteinrichtung
DE102022107181B3 (de) * 2022-03-25 2023-05-11 Webasto SE Leistungsschaltung und Verfahren zur Erhöhung der Lösekräfte beim Schalten eines Relais, sowie ein Relais, ein Ladegerät und eine Steuereinheit
CN115684917A (zh) * 2022-11-23 2023-02-03 上海希形科技有限公司 一种用于svg的继电器常开触点粘连检测电路
US20240426912A1 (en) * 2023-06-21 2024-12-26 Rockwell Automation Technologies, Inc. Detecting welded relay contacts using electrical pulse

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FR1158869A (fr) * 1956-09-14 1958-06-20 Trindel Perfectionnements apportés aux contacteurs électriques
DE1123384B (de) * 1959-12-01 1962-02-08 Siemens Elektrogeraete Gmbh Aus mehreren Kontakten bestehende Kontakteinrichtung fuer Schalt- und Regelvorrichtungen fuer elektrische Waermegeraete
US3118091A (en) * 1959-12-10 1964-01-14 Honeywell Regulator Co Control apparatus
US3418609A (en) * 1967-02-28 1968-12-24 United Carr Inc Square obturator
DE1928371A1 (de) * 1969-06-04 1971-02-04 Hartmann & Braun Ag Schaltungsanordnung zum Betreiben von Gleichstromrelais an Wechselspannung
US3958198A (en) * 1973-11-19 1976-05-18 International Standard Electric Corporation Magneto system including a tiltable u-shaped armature
US4254391A (en) * 1979-09-17 1981-03-03 Fasco Industries, Inc. Split armature relay
DE3239840C2 (de) * 1982-10-27 1986-11-20 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum Betätigen elektromagnetischer Schaltgeräte
DE3333833A1 (de) * 1983-09-20 1985-04-04 Brown, Boveri & Cie Ag, 6800 Mannheim Schaltungsanordnung zum gleichstrombetrieb fuer schuetze
CA1263144A (en) * 1984-06-04 1989-11-21 Heihachiro Umemura Relay trouble detecting device
US4645886A (en) * 1984-11-09 1987-02-24 Cuisinarts, Inc. Switch for automatically providing a safety function when its contacts are fused together in the "ON" position
JPS632219A (ja) * 1986-06-20 1988-01-07 株式会社東芝 リレ−駆動回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160106B4 (de) * 2000-12-08 2006-06-14 Toyota Jidosha K.K., Toyota Relaisverschweißungserfassungsvorrichtung und -erfassungsverfahren

Also Published As

Publication number Publication date
EP0294794A2 (de) 1988-12-14
DE3719298A1 (de) 1988-12-22
ES2043728T3 (es) 1994-01-01
EP0294794A3 (en) 1990-08-29
US4914315A (en) 1990-04-03
DE3719298C2 (enrdf_load_stackoverflow) 1991-02-07
DE3883086D1 (de) 1993-09-16

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