EP1166305B1 - Schaltungsanordnung mit sicherheitsfunktion - Google Patents

Schaltungsanordnung mit sicherheitsfunktion Download PDF

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Publication number
EP1166305B1
EP1166305B1 EP00917008A EP00917008A EP1166305B1 EP 1166305 B1 EP1166305 B1 EP 1166305B1 EP 00917008 A EP00917008 A EP 00917008A EP 00917008 A EP00917008 A EP 00917008A EP 1166305 B1 EP1166305 B1 EP 1166305B1
Authority
EP
European Patent Office
Prior art keywords
make contact
circuit
main
contact elements
contacts
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
EP00917008A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1166305A1 (de
Inventor
Jürgen BEHRENS
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP1166305A1 publication Critical patent/EP1166305A1/de
Application granted granted Critical
Publication of EP1166305B1 publication Critical patent/EP1166305B1/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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices

Definitions

  • the invention relates to a circuit arrangement with a safety function, the Contains at least two power contactors, which are arranged in release circuits Have main make contacts, each having a main make contact a contactor with a main normally open contact of another Power contactor is connected in series in the respective enabling circuit.
  • a circuit of the beginning mentioned type, but which contains positively driven relays, is from the DE 39 37 122 C2 known.
  • For contactors is a forced operation of main and auxiliary contacts due to the design not possible.
  • each coil of each power contactor is provided, the Normally open contacts can be operated together, and that the main normally open contacts each contactor is arranged between two auxiliary switch blocks which each have a make contact and a break contact, which are designed as positively driven contacts, the normally open contacts of all auxiliary switch blocks connected in series in a first signaling circuit are arranged and the break contacts of all auxiliary switch blocks in series switched are arranged in a second reporting circuit, and wherein the contacts of contactors and associated auxiliary switch blocks on one common contact bridge are set.
  • the circuit arrangement according to Figure 1 contains two power contactors, the Coils are designated K1 and K2.
  • Each of the coils K1, K2 is in one Circuit 1 or 1 'arranged, which by a normally open contact S1 or S2 can be closed via the query circuit 7. They work Normally open contacts S1 and S2 not directly on the contactors, but to the query circuit 7 as a safety-related shutdown for channels 1 and 2 ( Figure 2). In Figure 1, this is due to the hatching for the query circuit 7 in lines 1 and 1 '.
  • the normally open contacts S1 and S2 can be operated by a manual button 5.
  • the contactors are with their main normally open contacts H11, H12, H13 and H21, H22, H23 in the enabling circuits (collectively referred to here as 4) between auxiliary switch blocks, each auxiliary switch block a pair of contacts T1, V1; T3, V3; T2, V2; T4, V4 from make contact T1, T3, T2, T4 and NC contact V1, V3, V2, V4 contains.
  • the contacts of each auxiliary switch block are self-guided, i.e. NC contact and NO contact can be in the normal operation, never both open or both closed.
  • the normally open contacts T1, T3 and T2, T4 are connected in series in a first signaling circuit 2 arranged. This zone 2 provides information about the active position.
  • the normally closed contacts V1, V3 or V2, V4, again connected in series, are arranged in a second reporting circuit 3.
  • This zone 3 provides information about the passive position.
  • the information from the reporting circles 2 and 3 is monitored and evaluated by a query circuit 7. Since the Circuit arrangement with safety function according to the present invention does not meet the requirement for isolating properties, is in the enabling circuits 4 a main switch 6 is provided.
  • Figure 1 shows the circuit arrangement in the de-energized state, in which the coils K1, K2 are de-energized, a current flows in the alarm circuit 3 and the alarm circuit 2 is interrupted. If button 5 is now pressed, the normally open contacts S1 and S2 closed. The coils K1 and K2 are excited Sagittarius pull on. The normally open contacts T1, T3 and T2, T4, while the normally closed contacts V1, V3 or V2, V4 open. The main normally open contacts H11, H12, H13, H21, H22, H23 of the enabling circuit 4 will be closed. If button 5 is not pressed, it will normally turn itself on the conditions of the de-energized state again.
  • Figure 2 shows how two power contactors redundant and self-monitoring are connected.
  • the components of the OSSDs are K1M, K2M designated by auxiliary contactors with HK1, HK2, HK3, HK4.
  • a time module K1T which is used to bypass the contactors for starting, also has positively driven contacts.
  • the redundant design ensures functional reliability the circuit, even if one of the self-monitoring Contactors completely failed.
  • Figures 3 and 4 schematically show accidents. It's one at a time Main normally open contacts arranged between two auxiliary switching blocks B1 and B2 a contactor.
  • Figure 3 shows the fault that one of the main normally open contacts H11 welds. Due to the inclined contact bridge 8, the break contact can Close V3 again and would always signal an enable.
  • the normally closed contact V1 arranged in the same signaling circuit 3, however spatially close to the main normally open contact H11 remains open, so that in Message circuit 3 no current flows, which is recognized by the query circuit 7 ( Figure 1) becomes.
  • the normally open contact T3 opens accordingly, but since the normally open contact T1 remains closed, the fault is also detected in zone 2.
  • the main make contacts H12 and H13 are welded the NC and NO contacts of the auxiliary contactors behave accordingly.
  • Figure 4 illustrates the situation when one of the contacts of an auxiliary switch block welded, as an example the normally closed contact V1.
  • the contact V1 bends strongly but without opening, and all other contacts except T1 go into their active position.
  • the Control of the active position via the message line 2 reports because of the open normally open contact T11 the error, and after a short start-up bypass
  • the power contactor goes via the time module K1T ( Figure 2) in the off position.
  • the circuit arrangement of the invention fulfills the requirement for a Individual errors must be recognized by executing the safety function. Furthermore, it meets the requirements for preventive devices of an unexpected start. With a suitable design of the query circuit the demands for protection against unauthorized, unintentional and / or erroneous closing. The separator properties Circuit arrangement, however, is therefore not the main switch required in the enabling circuits.

Landscapes

  • Keying Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)
  • Burglar Alarm Systems (AREA)
  • Relay Circuits (AREA)
  • Control Of Combustion (AREA)
  • Air Bags (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Safety Devices In Control Systems (AREA)
EP00917008A 1999-04-03 2000-03-29 Schaltungsanordnung mit sicherheitsfunktion Expired - Lifetime EP1166305B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19915234A DE19915234A1 (de) 1999-04-03 1999-04-03 Schaltungsanordnung mit Sicherheitsfunktion
DE19915234 1999-04-03
PCT/EP2000/002735 WO2000060623A1 (de) 1999-04-03 2000-03-29 Schaltungsanordnung mit sicherheitsfunktion

Publications (2)

Publication Number Publication Date
EP1166305A1 EP1166305A1 (de) 2002-01-02
EP1166305B1 true EP1166305B1 (de) 2002-12-18

Family

ID=7903491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00917008A Expired - Lifetime EP1166305B1 (de) 1999-04-03 2000-03-29 Schaltungsanordnung mit sicherheitsfunktion

Country Status (8)

Country Link
US (1) US6614635B2 (ja)
EP (1) EP1166305B1 (ja)
JP (1) JP2002541755A (ja)
CN (1) CN1179390C (ja)
AT (1) ATE230156T1 (ja)
AU (1) AU3815300A (ja)
DE (2) DE19915234A1 (ja)
WO (1) WO2000060623A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10220349B4 (de) * 2002-01-31 2005-09-22 Siemens Ag Verfahren und Vorrichtung zum Verbinden einer Versorgungsgleichspannung mit einer Last und zum Trennen der Versorgungsgleichspannung von der Last
DE102015104211A1 (de) * 2015-03-20 2016-09-22 Pilz Gmbh & Co. Kg Sicherheitsschaltgerät zum fehlersicheren Abschalten einer elektrischen Last
EP3196913B1 (en) * 2016-01-20 2019-04-10 Schneider Electric Industries SAS Relay circuit and method for performing self-test of relay circuit
MX2020010560A (es) * 2016-07-06 2020-10-22 Hubbell Inc Receptaculo de interruptor de energia.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762663A (en) * 1986-04-08 1988-08-09 Westinghouse Electric Corp. Self-testing monitoring circuit
DE3619723A1 (de) * 1986-06-12 1987-12-17 Kloeckner Moeller Elektrizit Kontaktbehaftete zusatzsteuerung fuer sicherheitsstromkreise
DE3937122C2 (de) * 1989-11-10 1997-12-18 Elan Schaltelemente Gmbh Schaltungsanordnung mit Sicherheitsfunktion
DE19603310A1 (de) * 1996-01-31 1997-08-07 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung
JP3506590B2 (ja) * 1997-10-03 2004-03-15 三菱電機株式会社 モータの非常停止装置

Also Published As

Publication number Publication date
JP2002541755A (ja) 2002-12-03
AU3815300A (en) 2000-10-23
US20020011888A1 (en) 2002-01-31
WO2000060623A1 (de) 2000-10-12
CN1346502A (zh) 2002-04-24
DE50000972D1 (de) 2003-01-30
CN1179390C (zh) 2004-12-08
EP1166305A1 (de) 2002-01-02
US6614635B2 (en) 2003-09-02
DE19915234A1 (de) 2000-10-05
ATE230156T1 (de) 2003-01-15

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