EP0562959B1 - Informationseingabemodul mit elektrische Kontakte für Steuer- und Kontrolanlage - Google Patents

Informationseingabemodul mit elektrische Kontakte für Steuer- und Kontrolanlage Download PDF

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Publication number
EP0562959B1
EP0562959B1 EP93400762A EP93400762A EP0562959B1 EP 0562959 B1 EP0562959 B1 EP 0562959B1 EP 93400762 A EP93400762 A EP 93400762A EP 93400762 A EP93400762 A EP 93400762A EP 0562959 B1 EP0562959 B1 EP 0562959B1
Authority
EP
European Patent Office
Prior art keywords
detection member
contact
input
detection
electrically connected
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
EP93400762A
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English (en)
French (fr)
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EP0562959A1 (de
Inventor
Patrick Debussche
Thomas Fisch
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.)
Cegelec SA
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Cegelec SA
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Filing date
Publication date
Application filed by Cegelec SA filed Critical Cegelec SA
Publication of EP0562959A1 publication Critical patent/EP0562959A1/de
Application granted granted Critical
Publication of EP0562959B1 publication Critical patent/EP0562959B1/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
    • H01H1/00—Contacts
    • H01H1/60—Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces
    • H01H1/605—Cleaning of contact-making surfaces by relatively high voltage pulses

Definitions

  • the invention relates to an information input module by electrical contact for a control / command installation.
  • Such a module is known from document EP-0101643. It is designed primarily to detect a command entered via an electrical contact and provide information necessary for a control / command installation.
  • the electrical contact for example a push button, is electrically connected to a detection member such as an optocoupler.
  • This module is designed to incorporate a single electrical contact and a single detection device. Furthermore, this known module does not include an operating test circuit of the detection member.
  • a module must be able to include several contacts and several detection devices, each associated with a contact and installed on a media such as a printed circuit board.
  • the difference in electrical potential at the power supply inputs of such a module can vary to a large extent, for example between 48 and 127 volts, depending on the installation which receives it. Therefore, currently, it is necessary to adapt on a case-by-case basis, as a function of the difference in supply potential of the module, the characteristics of the detection member that it comprises as well as the number of contacts that can be implemented due to problems due to the effects of heat dissipation of components on the support.
  • a voltage regulator for example a switching regulator, having an output connected to the first terminal of the contact through the detection member, this output delivering a voltage lower than the voltage. , possibly variable, applied to the first input of the module.
  • each contact remains subject to the difference in supply potential of the module which may vary.
  • Each detection member receives a voltage which can be lower than the voltage of the first input, which makes it possible to use the same detection device for modules supplied with variable voltages. It also follows that the consumption of the module is reduced, which limits the effects of heat dissipation and makes it possible to increase the number of detection members that can be implemented on the same support. By suitably choosing the value of the resistors, the intensity of the current which the detection member must detect can be adjusted so that it is sufficient but not too high.
  • the function test circuit is directly integrated into the module and can be easily implemented. It makes it possible to test the operation of each detection member whatever the potential difference applied to the input terminals of the module.
  • test elements can be semiconductor elements.
  • Each detection member associated with a contact is, on the one hand, electrically connected to the first terminal of this contact through a resistor and a first diode, and on the other hand, electrically connected to the second input. power supply through said resistor, a second diode and the second test element.
  • FIG. 1 schematically represents a logic information input module according to the invention including elements for testing the operation of the detection members.
  • FIG. 2 schematically represents the logic information input module of FIG. 1 according to a first mode of control of the test elements.
  • FIG. 3 schematically represents the logic information input module of FIG. 1 according to a second mode of control of the test elements.
  • the information input module 20 by electrical contacts comprises two voltage supply inputs 1,2, one 1 receiving a voltage + VP, the other 2 receiving a voltage 0VP.
  • the potential difference + VP-OVP can have any value between 48 volts and 127 volts.
  • a switching voltage regulator 10, conventional in itself, is connected to the two inputs 1, 2 to produce on an output 11 a regulated voltage VR which is less than the voltage + VP and equal for example to 24 volts.
  • the module 20 also includes several electrical contacts 3, three of which are shown. Each contact 3 has two terminals 4,5 and a contact member 6 which when actuated establishes an electrical contact between the terminals 4,5. In the figure, the contacts are shown at rest. In the rest state, the terminals 4,5 are not electrically connected to each other by the contact member.
  • the module 20 also comprises several detection members 7 each associated with a contact 3. Each detection member, which can be a conventional optocoupler in itself, is sensitive to the passage of an electric current which takes place when the contact associated with it is activated and provides a logic information input signal SD which represents it to a control / command installation 30.
  • the output 11 of the switching voltage regulator is connected by line 12 to terminal 4 of each of the contacts 3 through the detection member 7 which is associated with it. Each detection member therefore receives the regulated voltage VR by line 12.
  • Input 1 is also connected to terminal 4 of each contact 3 by a line 17 and through a first resistor 14 and input 2 is connected to each terminal 5 of a contact by a line 11 '.
  • Each terminal 4 of a contact 3 is connected to the detection member 7 through a decoupling diode 13 and a second resistor 15.
  • the terminals 4.5 of each contact 3 are therefore subject to all of the potential difference + VP-0VP.
  • Each diode 13 protects the detection member 7 to which it is connected by letting an electric current only pass from the detection member to the terminal 4 of the contact associated with it.
  • the resistors 15 have values such that the current detected by a detection member 7 when the contact associated therewith is actuated is sufficient without being too large.
  • each resistor 15 has a value of 24KOhms.
  • the resistors 14 have a high resistivity, for example 120KOhms, which limits the intensity of the current flowing between the terminals of each contact when it is actuated. This arrangement makes it possible to considerably limit the power dissipated by the module.
  • the module 20 also includes elements for testing the operation of the detection members allowing the simulation of actuation or not of the contacts.
  • a first test element 8 is interposed between the output 11 of the switching voltage regulator and each detection member 7.
  • This test element 8 which can be a semiconductor element such as a transistor is controlled by an SCO signal generated by the control installation 30. In response to this signal SCO, the test element 8 opens line 12.
  • the input 2 is connected to each resistor 15 by a line 12 'through decoupling diodes 16 and a second test element 9 similar to the element 8.
  • the line 12' is normally open.
  • the test element 9 is controlled by a signal SC1 generated by the control / command installation 30. In response to this signal SC1, the test element 9 closes the line 12 '.
  • test element 8 opens the line 12 as visible in FIG. 2.
  • the detection members 7 are no longer supplied with voltage although certain contacts 3 can be actuated.
  • the monitoring / control installation can then verify that no detection device supplies an SD detection signal. This test mode simulates the operation of the detection devices when the contacts are in the rest state.
  • test element 9 closes the line 12 ′ as visible in FIG. 3.
  • the detection members 7 are supplied with voltage and must detect a current although certain contacts are at rest. The monitoring / control installation can then check that all the detection devices supply an SD signal. This test mode simulates the operation of the detection devices when the contacts are actuated.
  • test elements 8, 9 are supplied by the regulated voltage VR, the time taken by each test element to cut or close the line to which it is connected is independent of variations in the difference in supply potential of the module. This is advantageous in the case where the instants for testing the operation of the detection members must be dated very precisely and uniformly whatever these variations.

Landscapes

  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Claims (3)

  1. Informationseingabemodul über elektrische Kontakte für eine Kontroll- und Steueranlage,
    a) mit einem ersten und einem zweiten Eingang (1, 2) für elektrische Speisespannungen, die ggf. variablen Potentialunterschieden unterworfen sind,
    b) mit mehreren Kontakten (3), die je eine erste elektrisch an den ersten Eingang über einen ersten Widerstand (14) angeschlossene Klemme (4) und eine zweite elektrisch an den zweiten Eingang (2) angeschlossene Klemme (5) aufweisen, wobei jeder Kontakt einen elektrischen Strompfad zwischen seinen Klemmen unterbrechen oder herstellen soll, wenn er betätigt wird,
    c) mit mehreren Erfassungsorganen (7), die den einzelnen Kontakten (3) zugeordnet sind, wobei jedes Erfassungsorgan das Vorliegen oder Nichtvorliegen eines elektrischen Stroms zwischen den Klemmen des zugeordneten Kontakts feststellen und ein für eine Informationseingabe aufgrund der Betätigung des Kontakts repräsentatives Signal erzeugen kann,
    d) mit einem Spannungsregler (10), der elektrisch an die beiden Speiseeingänge (1, 2) angeschlossen ist und einen Ausgang (11) besitzt, der eine geregelte elektrische Spannung an die Erfassungsorgane liefert, wobei jedes Erfassungsorgan elektrisch an die erste Klemme (4) des zugeordneten Kontakts angeschlossen ist,
    e) und mit einer Schaltung zum Test des Betriebs der Erfassungsorgane (8, 9), die einerseits zwischen den Ausgang (11) des Spannungsreglers und jedes Erfassungsorgan (7) und andererseits zwischen jedes Erfassungsorgan (7) und den zweiten Speiseeingang (2) eingefügt ist, wobei diese Schaltung die Kontakte einerseits über die Erfassungsorgane mit Strom speisen und andererseits kurzschließen soll.
  2. Modul nach Anspruch 1, bei dem die Schaltung
    a) ein erstes Testelement (8) enthält, das zwischen den Ausgang (11) des Spannungsreglers und jedes Erfassungsorgan (7) eingefügt ist und in einem ersten Zustand den Ausgang des Spannungsreglers elektrisch an jedes Erfassungsorgan anschließt sowie in einem zweiten Zustand den Ausgang des Reglers elektrisch von jedem Erfassungsorgan trennt,
    b) ein zweites Testelement (9) enthält, das zwischen jedes Erfassungsorgan (7) und den zweiten Speiseeingang (2) eingefügt ist und in einem ersten Zustand jedes Erfassungsorgan elektrisch an den zweiten Speiseeingang anschließt sowie in einem zweiten Zustand jedes Erfassungsorgan elektrisch von dem zweiten Speiseeingang isoliert.
  3. Modul nach Anspruch 2, bei dem jedes einem Kontakt zugeordnete Erfassungsorgan einerseits elektrisch an die erste Klemme (4) dieses Kontakts über einen ersten Widerstand (15) und eine erste Diode (13) und andererseits an den zweiten Speiseeingang (2) über den Widerstand (15) und eine zweite Diode (16) sowie das zweite Testelement (9) angeschlossen ist.
EP93400762A 1992-03-26 1993-03-24 Informationseingabemodul mit elektrische Kontakte für Steuer- und Kontrolanlage Expired - Lifetime EP0562959B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9203649 1992-03-26
FR9203649A FR2689258B1 (fr) 1992-03-26 1992-03-26 Module d'entree d'information par contact electrique, pour installation de controle/commande.

Publications (2)

Publication Number Publication Date
EP0562959A1 EP0562959A1 (de) 1993-09-29
EP0562959B1 true EP0562959B1 (de) 1996-04-24

Family

ID=9428100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400762A Expired - Lifetime EP0562959B1 (de) 1992-03-26 1993-03-24 Informationseingabemodul mit elektrische Kontakte für Steuer- und Kontrolanlage

Country Status (6)

Country Link
US (1) US5382907A (de)
EP (1) EP0562959B1 (de)
JP (1) JP2618176B2 (de)
DE (1) DE69302314T2 (de)
ES (1) ES2085733T3 (de)
FR (1) FR2689258B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729167A (en) * 1996-02-01 1998-03-17 Motorola, Inc. Low power consumption switch interface circuit
FR2831893B1 (fr) * 2001-11-07 2004-07-16 Leroy Automatique Ind Dispositif actif a dissipation reduite pour circuits electriques, notamment d'automate ou de calculateur industriel
EP3170191B1 (de) 2014-07-18 2018-04-25 GE Intelligent Platforms, Inc. Universalkontakteingabe mit unterstützung von programmierbarem benetzungsstrom

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900628A (en) * 1956-01-27 1959-08-18 Westinghouse Electric Corp Multiple fault indicating system
US3021515A (en) * 1957-11-27 1962-02-13 Allis Chalmers Mfg Co Fault indicator
US3239755A (en) * 1962-01-12 1966-03-08 Western Electric Co Test circuitry for testing electrical apparatus for continuity of circuitry between terminals therein
US3611364A (en) * 1969-02-05 1971-10-05 Pillsbury Co Apparatus for determining the sequence of circuit discontinuities in a sealing circuit for a power output device
DE2046897A1 (de) * 1970-09-23 1972-04-06 Siemens Ag Schaltungsanordnung zum Verbessern des Schaltverhaltens eines Schwachstromkontak
FR2521771A1 (fr) * 1982-02-12 1983-08-19 Telemecanique Electrique Circuit d'alimentation d'un contact de commande et son application a la commande d'une temporisation de repos d'un relais
US4532466A (en) * 1982-08-16 1985-07-30 The Babcock & Wilcox Company Constant current source for field contact input
US4854165A (en) * 1987-06-01 1989-08-08 Danford A. Jay Apparatus for testing electrical components
JPH03188794A (ja) * 1989-12-18 1991-08-16 Nec Corp 監視制御装置とその監視方法

Also Published As

Publication number Publication date
US5382907A (en) 1995-01-17
DE69302314D1 (de) 1996-05-30
JP2618176B2 (ja) 1997-06-11
JPH06118109A (ja) 1994-04-28
FR2689258A1 (fr) 1993-10-01
EP0562959A1 (de) 1993-09-29
ES2085733T3 (es) 1996-06-01
FR2689258B1 (fr) 1996-12-13
DE69302314T2 (de) 1996-09-12

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