EP0678889B1 - Combinaison de sécurité pour contacteurs - Google Patents

Combinaison de sécurité pour contacteurs Download PDF

Info

Publication number
EP0678889B1
EP0678889B1 EP95105460A EP95105460A EP0678889B1 EP 0678889 B1 EP0678889 B1 EP 0678889B1 EP 95105460 A EP95105460 A EP 95105460A EP 95105460 A EP95105460 A EP 95105460A EP 0678889 B1 EP0678889 B1 EP 0678889B1
Authority
EP
European Patent Office
Prior art keywords
contactor
contact
coil
safety
relay
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
EP95105460A
Other languages
German (de)
English (en)
Other versions
EP0678889A1 (fr
Inventor
Ralph Ronald Dipl.-Ing. Göbel
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0678889A1 publication Critical patent/EP0678889A1/fr
Application granted granted Critical
Publication of EP0678889B1 publication Critical patent/EP0678889B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H47/005—Safety control circuits therefor, e.g. chain of relays mutually monitoring each other

Definitions

  • the invention relates to a contactor safety combination with auxiliary contactors for releasing a drive, in which a first safety or EMERGENCY STOP contact is connected upstream or downstream of the coils of two auxiliary contactors, the coil of the first auxiliary contactor being an NC contact of the second auxiliary contactor and the Coil of the second auxiliary contactor an NC contact of the first auxiliary contactor is connected in series.
  • the first auxiliary contactor picks up and thus the normally open contact in series with the coil of the second auxiliary contactor closes. Pressing an ON button upstream of this causes the second auxiliary contactor to pull in. Thereupon, by closing a normally open contact of the second auxiliary contactor, the current path of the coil of the third auxiliary contactor is closed and at the same time the current path of the coil of the first auxiliary contactor is interrupted. In this way, the auxiliary contactors are mutually monitored. Only at A drive is enabled for all three auxiliary contactors to function. The circuit already has four switching elements per auxiliary contactor. With three, for example, eight-pole contactors, four enabling circuits can be implemented.
  • the switching elements of the auxiliary contactors are used more efficiently, which enables the implementation of at least one enabling circuit with three four-pole auxiliary contactors.
  • a safety or EMERGENCY STOP contact is connected upstream of the coils of three auxiliary contactors connected to the control voltage, and the coil of the first auxiliary contactor is connected in series with NC contacts of the second and third auxiliary contactors.
  • the coils of the second and third auxiliary contactors which are connected in parallel are preceded by a series connection of normally open contacts of the second and third auxiliary contactors.
  • parallel to this series connection is a normally open contact of the first auxiliary contactor in series with a normally open contact of an ON button.
  • the invention has for its object to provide a contactor safety combination of the type mentioned above, which enables the series connection of a protective door and EMERGENCY STOP circuit with the least possible effort.
  • the object is achieved in that the coil of the second auxiliary contactor has a downstream second with the first coupled safety or EMERGENCY STOP contact, to which an NC contact of an ON button is connected in series, that the NC contact of the second auxiliary contactor has a NO contact
  • Auxiliary contactor is parallel that the normally closed contact of the first auxiliary contactor is a normally open contact in parallel, means are provided by which the second auxiliary contactor always pulls in before the first one when the auxiliary contactors are actuated, and that the series connection of the coil of the second auxiliary contactor and the second EMERGENCY STOP contact and the break contact of the ON button have an RC Link in the form of a capacitor connected in series with an ohmic resistor is connected in parallel, a diode being connected in parallel with the resistance of the RC link, via which
  • the circuit is self-monitoring even with volatile errors. It therefore corresponds to the safety standard of previously known circuits of this type. Self-monitoring is achieved by using the capacitor, which takes over the memory function of the usually third contactor.
  • the DC voltage connection for the two-channel EMERGENCY STOP circuit according to FIG. 1 is formed by a positive pole 1 and a negative pole 2.
  • An opener contact 3 of an EMERGENCY STOP switch to the positive pole 1 is connected upstream of two coils a, b of a first and second auxiliary contactor.
  • a parallel connection of a normally open contact and an normally closed contact is connected directly in front of each of the two coils a, b, which are parallel to one another, and each is electrically connected directly to the normally closed contact 3 of the EMERGENCY STOP switch at its other connection point.
  • the parallel connection upstream of the coil a of the first auxiliary contactor consists of an NC contact K b1 of the second auxiliary contactor and a normally open contact K a2 of the first auxiliary contactor.
  • the other parallel circuit upstream of the coil b of the second auxiliary contactor has an NC contact K a1 of the first auxiliary contactor and a normally open contact K b2 of the second auxiliary contactor. While the coil a of the first auxiliary contactor is directly connected to the negative pole 2 with its other connection point, there is a series connection of an NC contact 5 of an ON button and another to the EMERGENCY STOP switch between this and the second connection point of the coil b of the second auxiliary contactor associated NC contact 4 switched.
  • the coil b of the second contactor, the normally closed contact 5 of the ON button and the second normally closed contact 4 of the EMERGENCY STOP switch form a series circuit to which an ohmic resistor 16 with a capacitor 7 connected in series is connected in parallel.
  • a diode 8 is connected in parallel to the ohmic resistor 16 in such a polarized manner that the capacitor 7 can discharge via this and the two normally closed contacts 4, 5 in the closed state.
  • Another ohmic resistor 17 is located at the connection point of the normally closed contact 3 of the EMERGENCY STOP switch to the two coils a, b and the negative pole 2.
  • the break contact K b1 of the second auxiliary contactor opens in front of the coil a, so that if the second auxiliary contactor pulls in faster, it is ensured that only this pulls in.
  • the break contact 5 opens and the second auxiliary contactor is made to drop out, while the first auxiliary contactor can pick up.
  • the capacitor 7 lying parallel to the coil b of the second auxiliary contactor is already charged by the previous excitation of the latter.
  • Discharge of the capacitor 7 is prevented on the one hand by the fact that the break contact 5 of the ON button interrupts the connection of the second contactor to the negative pole 2 and because, on the other hand, the first pulls in after the second auxiliary contactor drops out, so that the connection to the positive pole 1 is also interrupted is. If the ON button is released, ie the normally closed contact 5 is closed again, the first auxiliary contactor remains in the ON position due to the self-holding contact K a2 and the second auxiliary contactor is excited by the discharge current of the capacitor 7 and also picks up. Since the EMERGENCY STOP circuit only requires two auxiliary contactors, each with two switching elements, two enabling circuits with two NO contacts each can be implemented with only two four-pole auxiliary contactors.
  • the voltage connection at the connections 1, 2 is monitored and displayed in a simple manner by the LED 10.
  • the LED 9 makes the excitation of the first auxiliary contactor visible.
  • FIG. 2 shows the execution of a two-channel protective door circuit according to the invention. It differs from the EMERGENCY STOP circuit according to FIG. 1 only in that the break contacts 3, 4 are now switched depending on the position of a protective door. The two switching elements 3, 4 are also opened in the open state in accordance with the position of the protective door shown.
  • FIG 3 shows a two-channel EMERGENCY STOP circuit for AC voltage connection with a transformer 18 and a rectifier bridge 19 connected in series, through which the AC voltage is transformed down on the one hand and the AC current is rectified. Otherwise, this circuit also fully agrees with that of FIG 1 and thus requires no further explanation.

Landscapes

  • Keying Circuit Devices (AREA)
  • Push-Button Switches (AREA)

Claims (6)

  1. Combinaison de sécurité de contacteurs, comportant des contacteurs auxiliaires pour la libération d'un dispositif d'entraînement, dans lequel un premier contact (3) de sécurité ou de non-débranchement est branché en amont ou en aval des bobines (a, b) de deux contacteurs auxiliaires, un contact rupteur (Kb1) du deuxième contacteur auxiliaire étant branché en série avec la bobine (a) du premier contacteur auxiliaire et un contact rupteur (Ka1) du premier contacteur auxiliaire étant branché en série avec la bobine (b) du deuxième contacteur auxiliaire, caractérisée en ce que la bobine (b) du deuxième contacteur auxiliaire comporte un deuxième contact (4) de sécurité ou de non-débranchement, qui est branché en aval, qui est couplé avec le premier (3) et en série avec lequel est branché un contact rupteur (5) d'une touche de branchement, un contact normalement ouvert (Ka2) du premier contacteur auxiliaire est en parallèle avec le contact rupteur (Kb1) du deuxième contacteur auxiliaire, un contact normalement ouvert (Kb2) est en parallèle avec le contact rupteur (Ka1) du premier contacteur auxiliaire, des moyens sont prévus, par lesquels, lorsque les contacteurs auxiliaires sont actionnés, c'est toujours le deuxième contacteur auxiliaire qui est attiré avant le premier, et un élément RC sous forme d'un condensateur (7) branché en série avec une résistance ohmique (16) est branché en parallèle avec le circuit série constitué de la bobine (b) du deuxième contacteur auxiliaire ainsi que du deuxième contact (4) de non-débranchement et du contact (5) rupteur de la touche de branchement, une diode (8) est en parallèle avec la résistance (16) de l'élément RC, le condensateur (7) pouvant être déchargé par l'intermédiaire de celle-ci par l'intermédiaire de la bobine (16) du deuxième contacteur auxiliaire.
  2. Combinaison de sécurité de contacteurs suivant la revendication 1,
       caractérisée en ce que les moyens, par lesquels, lorsque les contacteurs auxiliaires sont actionnés, le deuxième contacteur auxiliaire est toujours attiré avant le premier, consistent en ce que les résistances des deux bobines (a, b) sont de valeurs différentes.
  3. Combinaison de sécurité de contacteurs suivant la revendication 1 ou 2, caractérisée en ce qu'une première diode électroluminescente (9) est branchée en parallèle avec la bobine (a) du premier contacteur auxiliaire.
  4. Combinaison de sécurité de contacteurs suivant l'une des revendication précédentes, caractérisée en ce qu'une deuxième diode électroluminescente (10) est branchée en parallèle avec la borne (1, 2) de tension de commande de la combinaison de sécurité de contacteurs.
  5. Combinaison de sécurité de contacteurs suivant l'une des revendication précédentes, caractérisée en ce que la touche de branchement est branchée en contrôle automatique.
  6. Combinaison de sécurité de contacteurs suivant l'une des revendication précédentes, caractérisée en ce que les contacts de non-débranchement sont des contacts (3,4) dépendant de la position d'une porte de protection.
EP95105460A 1994-04-20 1995-04-11 Combinaison de sécurité pour contacteurs Expired - Lifetime EP0678889B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4413676A DE4413676C1 (de) 1994-04-20 1994-04-20 Schützsicherheitskombination
DE4413676 1994-04-20

Publications (2)

Publication Number Publication Date
EP0678889A1 EP0678889A1 (fr) 1995-10-25
EP0678889B1 true EP0678889B1 (fr) 1997-10-01

Family

ID=6515933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105460A Expired - Lifetime EP0678889B1 (fr) 1994-04-20 1995-04-11 Combinaison de sécurité pour contacteurs

Country Status (2)

Country Link
EP (1) EP0678889B1 (fr)
DE (2) DE4413676C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4441171C1 (de) * 1994-11-18 1996-02-08 Siemens Ag Schützsicherheitskombination
DE19500396C1 (de) * 1995-01-09 1996-02-01 Siemens Ag Sicherheitskombination
DE19616905C1 (de) * 1996-04-17 1997-08-21 Schleicher Relais Schaltungsanordnung mit Sicherheitsfunktion
CN107046758B (zh) * 2017-03-16 2023-06-27 上海鑫燕隆汽车装备制造有限公司 汽车焊接生产线照明灯控制箱
CN113872259B (zh) * 2020-06-30 2024-06-18 比亚迪股份有限公司 接触器、直流充电配电盒及车辆

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830742A1 (de) * 1988-09-09 1990-03-22 Elan Schaltelemente Gmbh Sicherheitsschaltung
DE3933699C2 (de) * 1989-10-09 1998-12-03 Siemens Ag Schützsicherheitskombination
DE3937122C2 (de) * 1989-11-10 1997-12-18 Elan Schaltelemente Gmbh Schaltungsanordnung mit Sicherheitsfunktion
DE4337665C1 (de) * 1993-11-04 1994-10-20 Siemens Ag Schützsicherheitskombination

Also Published As

Publication number Publication date
DE4413676C1 (de) 1995-09-21
EP0678889A1 (fr) 1995-10-25
DE59500734D1 (de) 1997-11-06

Similar Documents

Publication Publication Date Title
EP1228519B1 (fr) Commutateur de securite servant a la mise sous tension et a la mise hors tension de securite d'un recepteur electrique, en particulier d'une machine a entrainement electrique
DE69822397T2 (de) Vorrichtung zur Steuerung eines Schutzschalters
EP0678889B1 (fr) Combinaison de sécurité pour contacteurs
EP0792512B1 (fr) Ensemble de securite a contacteurs
DE19736183C1 (de) Sicherheitsgerichtete Schaltungsanordnung für eine mindestens einkanalige Sicherheitsschaltung
DE102008002758B4 (de) Relaisschaltung
DE2019184C3 (de) Starkstromschalteinrichtung
EP0027511B1 (fr) Procédé et circuit pour mettre en service l'alimentation à distance bilatérale des régénérateurs d'une ligne de transmission
WO2002011165A1 (fr) Commutateur de securite pour la mise hors-circuit sure d'une charge electrique, en particulier d'une machine a entrainement electrique
DE19500396C1 (de) Sicherheitskombination
DE4337665C1 (de) Schützsicherheitskombination
EP0895263B1 (fr) Agencement pour la mise en circuit de dispositifs électriques un à la fois
WO1995020257A1 (fr) Disjoncteur de protection a courant differentiel residuel
EP0034854B1 (fr) Circuit de surveillance pour circuit de sortie de signal d'une installation de freinage d'un véhicule
DE4001054C2 (fr)
EP3742466A1 (fr) Ensemble de circuit permettant de commuter de manière sécurisée un consommateur électrique selon une mesure de sécurité
DE3524523C2 (fr)
DE2746556C2 (de) Einrichtung zur Überwachung des Hubes der Stössel eines Sicherheitsdoppelventils einer Steuerventilanordnung, insbesondere zur Hubauslösung einer Presse
DE2230753C2 (de) Schaltung zur Zustandskontrolle einer elektrischen Sicherung
DE10151053B4 (de) Schaltungsanordnung
EP0865661B1 (fr) Ensemble contacteurs de securite
DE961554C (de) Anordnung zur Kurzunterbrechung eines Stromkreises und darauffolgender Schnellwiedereinschaltung
DE2922782A1 (de) Ueberwachungseinrichtung fuer zweipolige elektrische befehlsleitungen
DE1615849C (de) Schaltungsanordnung zur wahlwiesen Stromversorgung eines elektrischen Ver brauchers, insbesondere einer Flugsteuer anlage
DE2602910C2 (de) Elektrische Sicherheitsschaltung von Maschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES FR LI SE

17P Request for examination filed

Effective date: 19960119

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19970303

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19971001

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59500734

Country of ref document: DE

Date of ref document: 19971106

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19980101

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080620

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20091231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091222

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080422

Year of fee payment: 14