EP2416339A3 - Self-monitoring button switch and accompanying monitoring method - Google Patents

Self-monitoring button switch and accompanying monitoring method Download PDF

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Publication number
EP2416339A3
EP2416339A3 EP11174894.3A EP11174894A EP2416339A3 EP 2416339 A3 EP2416339 A3 EP 2416339A3 EP 11174894 A EP11174894 A EP 11174894A EP 2416339 A3 EP2416339 A3 EP 2416339A3
Authority
EP
European Patent Office
Prior art keywords
circuit
relay
test signal
signaling
monitoring
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
EP11174894.3A
Other languages
German (de)
French (fr)
Other versions
EP2416339A2 (en
EP2416339B1 (en
Inventor
Manfred Zmeck
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.)
Schaefer GmbH
Original Assignee
Schaefer 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 Schaefer GmbH filed Critical Schaefer GmbH
Publication of EP2416339A2 publication Critical patent/EP2416339A2/en
Publication of EP2416339A3 publication Critical patent/EP2416339A3/en
Application granted granted Critical
Publication of EP2416339B1 publication Critical patent/EP2416339B1/en
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
    • 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

Abstract

Die erfindungsgemäße Tasterschaltung (25) besteht aus zwei Teilschaltungen (14, 15), die ihre Funktion gegenseitig überwachen. Dies erfolgt, indem eine der beiden Teilschaltungen (14, 15) zyklisch die jeweils andere Teilschaltung, zum Beispiel durch Erzeugen eines Testsignals, aktiviert. Das Testsignal kann beispielsweise durch Beaufschlagung des Sensoreingangs (13) der betreffenden Teilschaltung (14) mit einem Testsignal erfolgen. Beide Teilschaltungen (14) und (15) steuern jeweils ein Relais (16, 17). Vorzugsweise ist eines der Relais (16, 17) im Ruhezustand bestromt, während das andere der beiden Relais (16, 17) im Ruhezustand stromlos ist. Ein Ruhekontakt des einen Relais ist mit dem Arbeitskontakt des anderen Relais in Reihe geschaltet, um dadurch einen sowohl im Normalbetrieb wie auch während der Testsequenz dauernd geschlossenen (oder alternativ dauernd offenen) Stromkreis zu bilden. Die Integrität des Stromkreises wird von einer Meldeschaltung (25) überwacht. Die Signalisierung einer Betätigung des Tasters wie auch eines Ausfalls der Tasterschaltung (12) erfolgt jeweils durch Unterbrechung (bzw. Schließung) des Meldestromkreises (24).

Figure imgaf001
The pushbutton circuit (25) according to the invention consists of two subcircuits (14, 15) which monitor each other's function. This is done by one of the two sub-circuits (14, 15) cyclically activates the other sub-circuit, for example by generating a test signal. The test signal can be effected, for example, by applying a test signal to the sensor input (13) of the relevant subcircuit (14). Both subcircuits (14) and (15) each control a relay (16, 17). Preferably, one of the relays (16, 17) is energized in the idle state, while the other of the two relays (16, 17) is de-energized in the idle state. A normally closed contact of one relay is connected in series with the normally open contact of the other relay thereby to form a circuit that is permanently closed (or alternatively permanently open) both during normal operation and during the test sequence. The integrity of the circuit is monitored by a signaling circuit (25). The signaling of an actuation of the button as well as a failure of the button circuit (12) takes place in each case by interrupting (or closing) the signaling circuit (24).
Figure imgaf001
EP11174894.3A 2010-08-04 2011-07-21 Self-monitoring button switch and accompanying monitoring method Active EP2416339B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010036838 DE102010036838A1 (en) 2010-08-04 2010-08-04 Self-monitoring push-button switch and associated monitoring method

Publications (3)

Publication Number Publication Date
EP2416339A2 EP2416339A2 (en) 2012-02-08
EP2416339A3 true EP2416339A3 (en) 2013-06-05
EP2416339B1 EP2416339B1 (en) 2016-10-12

Family

ID=44971148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11174894.3A Active EP2416339B1 (en) 2010-08-04 2011-07-21 Self-monitoring button switch and accompanying monitoring method

Country Status (6)

Country Link
EP (1) EP2416339B1 (en)
CN (1) CN102376148B (en)
DE (1) DE102010036838A1 (en)
DK (1) DK2416339T3 (en)
ES (1) ES2602837T3 (en)
PL (1) PL2416339T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015211510A1 (en) * 2014-07-24 2016-01-28 Heidelberger Druckmaschinen Ag EDM
EP3196913B1 (en) * 2016-01-20 2019-04-10 Schneider Electric Industries SAS Relay circuit and method for performing self-test of relay circuit
EP3462471B1 (en) * 2017-09-29 2022-04-13 Rockwell Automation Switzerland GmbH Safety switch
CN114334542B (en) * 2021-11-26 2023-12-08 漳州科华技术有限责任公司 Relay circuit and electric equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642233A1 (en) * 1986-12-10 1988-06-23 Steuerungselektronik Schoefman Device for self-monitoring of relay contacts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729480A1 (en) * 1977-06-30 1979-01-11 Kloeckner Humboldt Deutz Ag Non-reactive monitor for switchgear contacts - has series connection of HF relay, oscillator and filter in parallel with switch contact for potential-free signalling
DE102006053397A1 (en) * 2006-11-10 2008-05-15 Cedes Ag Safety switching device
DE102007041972B3 (en) * 2007-08-31 2009-04-09 Siemens Ag Device for controlling a motor-driven switch drive for a switching device with integrated control unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642233A1 (en) * 1986-12-10 1988-06-23 Steuerungselektronik Schoefman Device for self-monitoring of relay contacts

Also Published As

Publication number Publication date
CN102376148B (en) 2015-08-19
PL2416339T3 (en) 2017-02-28
EP2416339A2 (en) 2012-02-08
DK2416339T3 (en) 2016-12-05
ES2602837T3 (en) 2017-02-22
EP2416339B1 (en) 2016-10-12
CN102376148A (en) 2012-03-14
DE102010036838A1 (en) 2012-02-09

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