EP0112740B1 - Electronic control circuit for a multi-mode apparatus comprising a mechanism with an electromagnet - Google Patents

Electronic control circuit for a multi-mode apparatus comprising a mechanism with an electromagnet Download PDF

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Publication number
EP0112740B1
EP0112740B1 EP83402226A EP83402226A EP0112740B1 EP 0112740 B1 EP0112740 B1 EP 0112740B1 EP 83402226 A EP83402226 A EP 83402226A EP 83402226 A EP83402226 A EP 83402226A EP 0112740 B1 EP0112740 B1 EP 0112740B1
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EP
European Patent Office
Prior art keywords
circuit
control
logic circuit
electromagnet
contact
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Expired
Application number
EP83402226A
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German (de)
French (fr)
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EP0112740A1 (en
Inventor
André Delbosse
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Merlin Gerin SA
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Merlin Gerin SA
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Priority to AT83402226T priority Critical patent/ATE43455T1/en
Publication of EP0112740A1 publication Critical patent/EP0112740A1/en
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Publication of EP0112740B1 publication Critical patent/EP0112740B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
    • 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
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay

Definitions

  • the invention relates to a device for controlling an electrical device in accordance with the preamble of claim 1.
  • the document EP-A-50 301 relates to a bistable relay controlled by an electronic control circuit having several control pulse inputs adapted to several modes of operation of the relay.
  • the latter has a control coil and a movable contact.
  • the relay coil is inserted diagonally across a bridge of four transistors supplied by a stabilized voltage source Vcc.
  • the direction of the excitation current in the coil must be reversed at each change of state of the relay.
  • This excitation cycle is controlled by an electronic control circuit comprising a flip-flop whose complemented outputs are connected to the respective bases of the transistors via AND logic gates.
  • An auxiliary counter cooperates with these AND gates to authorize the excitation of the coil during a predetermined time interval.
  • Such a constitution of the switching circuit with four transistors for supplying the coil, and the presence of the counter complicates the device for controlling the bistable relay. Synchronous engagement is impossible with this device.
  • One of the inputs allows a mode of operation as a remote control switch, authorizing a change of state of the movable contact at each pulse applied to said input.
  • Another input can receive a monostable signal, but the open or closed state of the mobile contact of the device is not taken into account for the control of the coil.
  • the document DE-A 2816592 relates to an electronic circuit for controlling a bistable relay controlled by a thyristor. Unlocking the thyristor at a predetermined instant causes the discharge of an energy storage capacitor in the relay coil, which is electrically arranged in series with the thyristor. Only one operating mode is possible with opening and closing of an alternating current circuit at zero voltage crossing. The position of the moving contact of the relay does not intervene in the development of the control signal.
  • the documents DE-A 2 007 618 and DE-A 2 601 799 each describe a circuit for supplying a coil of a contactor in series with a triac.
  • a triac control circuit allows the excitation of the coil in the vicinity of the zero crossing of the alternating voltage.
  • the object of the invention is to provide a modular electrical device having an actuator with multiple operation by selector and static control allowing the control of the excitation of the electromagnet depending on the operating mode chosen.
  • the use of a triac associated with its control circuit makes it possible to obtain operating reliability linked to the calibration of the control pulse for priming the triac, and to the availability of high motive power by supercharging the solenoid coil for a very short time.
  • the volume of the electromagnet is reduced and also allows synchronous engagement which consists in supplying the coil at the start of an alternation of the alternating supply voltage.
  • the logic circuit includes a plurality of outputs delivering separate output signals according to the state of the input signals determined by control means.
  • the latter comprise one or more auxiliary contacts actuated manually or automatically by an automaton or a programmer and a position detector of the mobile contact of the device.
  • the selector allows the taking into account of a predetermined output signal of the logic circuit corresponding to a particular mode of operation of the device, namely in remote control switch, in contactor or in opening - closing.
  • the mode is indicated to the user by means of a signaling device cooperating with the selector.
  • FIGS 1 and 2a a pole of a modular electrical device 10 whose actuation mechanism of the movable contact 12 comprises an electromagnet 14 controlled by an electronic control circuit 16.
  • the electrical device 10 is constituted by a remote control switch, the mechanism of which causes a change in state of the movable contact 12 during each excitation of the coil of the electromagnet 14.
  • This remote control switch could be replaced by any other low bistable device voltage, including a remote control closing and opening circuit breaker.
  • the device 10 is housed in a molded box 18 placed side by side with the module 20 of the electronic circuit 16.
  • the device 10 comprises a first pair of terminals 22a, 22b for connection of the use circuit in connection with the movable contact 12, and a second pair of terminals 24a, 24b for connection of the electromagnet 14 to the electronic circuit 16 of the control module 20.
  • the electromagnet 14 of the mechanism for actuating the movable contact 12 is arranged inside the box 18, but it is clear that it could be placed in an intermediate box between the box 18 and the module 20 when the device 10 is a remote controlled circuit breaker.
  • the electromagnet 14 is connected in series with a controlled static switch, in particular a triac 25, intended to open or close the supply circuit 26 of the electromagnet 14, connected to an alternating voltage source U by power conductors P and N associated with terminals 27a, 27b of the module 20.
  • the triac 25 is incorporated in the module 20 which is electrically connected to the electromagnet 14 by connection conductors 28a, 28b connected respectively to the terminals 24a , 24b of the device 10.
  • the supply circuit 26 of the device 10 comprises in series the conductor N, the terminal 27b of the module 20, the triac 25, the connecting conductor 28b, the terminal 24b, the coil of the electromagnet 14, the terminal 24a, the connecting conductor 28a, the terminal 27a and the conductor P.
  • the voltage source U is formed by way of example by the 220 V alternating network.
  • a resistor R A is interposed between terminal 27a and a power supply 30 constituted by a voltage regulator circuit which supplies the DC supply voltage to the electronic circuit 16 from the AC voltage U of the network.
  • the triac 25 control electrode is connected to a generator circuit 32 capable of delivering synchronous pulses at each half-period of the voltage U and in the vicinity of zero voltage for priming the triac 25.
  • a generator circuit 32 capable of delivering synchronous pulses at each half-period of the voltage U and in the vicinity of zero voltage for priming the triac 25.
  • At the generator circuit 32 is associated with a monostable flip-flop 34, the output of which provides a single pulse for each order applied to the input from a logic control circuit 36.
  • the width T of the output pulse of the flip-flop 34 determines the time during which the generator circuit 32 will supply ignition pulses to the triac 25, that is to say the time of current flow in the electro- magnet 14 of the device 10.
  • the monostable rocker 34 is formed by a Schmitt trigger or by any other operator or shaping circuit whose change of state from 0 to 1 of the input brings the output to the state 1, the output remaining in this state for a duration T defined by the characteristics of the operator, regardless of the time during which the input remains in state 1.
  • a selector 38 with three adjustment pads is electrically interposed between the logic control circuit 36 and the monostable rocker 34 to choose one of the outputs of the logic circuit 36 corresponding to a predetermined operating mode of the device 10.
  • the first position CT (output Si) requires contactor operation
  • the second position TL (output S 2 ) corresponds to the operating mode as a remote control switch
  • the third ON-OFF (output S 3 ) to open and close operation depending on the position contacts 12 of the device.
  • the switching of the selector 38 takes place from the front face of the module 20, and the three distinct operating modes depend on the shape of the control signals of the logic circuit 36 cooperating in combination with a detector 40 of the position of the contacts 12 of the remote control switch 10 and control means K constituted by one or more auxiliary contacts actuated by pushbuttons, a programmer or an automaton.
  • the auxiliary contacts of the control means K of the logic circuit 36 are electrically connected by a link circuit 42 to terminals 44a, 44b of the module 20.
  • the detector 40 for the position of the contacts 12 of the device 10 comprises, for example, a reed relay, the control contact 46 of which is actuated by a permanent magnet 48 movable secured to a member 50 for transmitting the movement of the main movable contact 12 of the device 10.
  • the control contact 46 of the detector 40 is either open when the movable contact 12 of the device 10 is itself open, or closed in the closed position of the contact 12.
  • FIG. 2b represents a one-piece device 100 integrating the electronic circuit 16 and electromagnet remote control 14 assembly.
  • the selector 38 is associated with a signaling device (not shown), for example with light-emitting diodes, which indicates on the front face the operating mode of the device 10 (fig.2a) or 100 (fig.2b) depending on the position of the selector 38.
  • FIG. 3 shows the diagram of the logic circuit 36 for controlling the monostable lever 34.
  • the control means K (FIGS. 1 and 2a) comprise a first push button BP, used to generate a common control signal E 1 corresponding to the contactor, remote control and ON closing function.
  • a second push button BP 2 is used to deliver a control signal E 2 capable of ensuring the OFF opening function.
  • the two control signals E 1 ' E 2 each have two logic states 0 or 1 corresponding respectively to the opening and closing of the push buttons BP ,, BP 2 .
  • a third control signal E 3 comes from the position detector 40 such that the opening or closing of the main movable contact 12 of the associated device 10 results respectively in a logic state 0 or 1 at the output of the detector 40.
  • the positive logic is thus used to explain the operation of circuit 36.
  • the logic circuit 36 comprises a first sub-assembly SE 1 provided with a NAND logic gate 60 which supplies an output signal S, applied via a diode D 1 to the first pad CT of the selector 38.
  • a NAND logic gate 60 which supplies an output signal S, applied via a diode D 1 to the first pad CT of the selector 38.
  • At the one of the inputs of the door 60 is connected to the output of a NAND gate 62, one of the inputs of which is connected to the output of the detector 40, and the other input of which is connected by a NON 64 gate to the output of the button push button BP 1 .
  • the other input of door 60 is connected to another NAND door 66 connected on the one hand to the push button BP, and on the other hand to the detector 40 via a door NO 68.
  • the door NAND logic 62 is sensitive to input signals E 1 and E 3 , while the two inputs of gate 66 receive control signals E 1 and E 3 .
  • This first sub-assembly SE 1 generates the contactor function, and the output voltage S, of the NAND gate 60 is defined by the following relation:
  • the truth table below represents the logical states of the signals at different points in the SE 1 subset (contactor logic).
  • logic state 0 represents an absence of information or voltage
  • logic state 1 identifies with the presence of voltage information (positive logic).
  • the output voltage S 1 is equal to 1 for the combination E 1 . E 3 or E 1 . E 3 , and zero for the combination E 1 . E 3 or E 1 .E 3 .
  • the input signals E 1 and E 3 have a logic state different from each other.
  • the output signal S 1 remains at state 0 when the inputs of SE 1 simultaneously receive control signals E 1 and E 3 having the same logic state.
  • the second stud TL of the selector 38 is connected via a diode D 2 directly to the first push button BP 1 .
  • the output voltage S 2 applied to the terminal TL initializes the remote control function generated exclusively by the actuation of the push button BP 1 .
  • Each closing of BP 1 corresponds to a logic state 1 of S 2 capable of causing a change of state of the contact 12 of the device 10 independently of the positions of the detector 40 and of the second push button BP 2 .
  • the third ON-OFF pad of the selector 38 is connected by a diode D 3 to a NAND gate 70 of a second sub-assembly SE 2 of the circuit 36.
  • One of the inputs of the gate 70 is connected to the output of a NAND gate 72 connected in parallel to the input terminals of the gate 66, the gate 72 being sensitive to the control signals E 1 and E 3 .
  • the other input of door 70 is controlled by another NAND door 74 connected to the detector 40 and to the second push button BP 2 to receive the control signals E 2 and E 3 .
  • This second subset SE 2 with three input variables provides the opening - closing function, and the output voltage S 3 of the gate 70 is determined by the following logical relation: in which the control voltages E 1 ' E 2 and E 3 applied to the inputs of SE 2 correspond respectively to the state of the first push button BP ,, of the second push button BP 2 and of the position detector 40 with Reed relay.
  • the positive logic truth table shows the logical states of the signals at different points of the SE 2 subset:
  • the transition to logic state 1 of the output voltage S 3 occurs for the combination E 2 . E 3 or E 1 . E 3 , that is to say when the control voltages E 2 and E 3 are in state 1 corresponding to the simultaneous closing of the push button BP 2 and of the contact 12 of the device 10, or when the control voltage E is in state 1 (closing of BP,) while the control voltage E 3 is at the same time in state 0 (opening of contact 12).
  • the two subsets SE, and SE 2 of the logic circuit 36 are produced by means of NAND and NON gates, but it is obvious that the circuit 36 could be designed with other combinational operators making it possible to obtain the functions logic (1) and (2) corresponding to the output voltages S, and S 3 .
  • the push button BP, the push button BP 2 and the detector 40 are connected respectively to one of the poles of the power supply 30 by resistors R 1 ' R 2 , R 3 and to the other pole by resistors R 6 , R 4 and R 5 in series with a diode D 5 .
  • FIG. 4 illustrating the shape of the signals at different points of the circuit 16 according to the position of the selector 38:
  • the selector 38 is in the TL position while the other two positions CT and ON-OFF are out of service.
  • the apparatus 10 behaves like a remote control switch.
  • the output S 2 of the logic circuit 36 is connected to the input of the monostable flip-flop 34.
  • the flip-flop 34 supplies a single pulse of constant duration T to the generator circuit 32 at each order of the output S 2 .
  • the pulses delivered by the generator circuit 32 for priming the triac 25 appear synchronously at each half-period and in the vicinity of the voltage zero during the duration T of the control pulse of the monostable rocker 34. It results therefrom synchronous engagement.
  • the passage time of the current in the coil 14 of the remote control switch is very limited, even if the push button BP 1 remains pressed in the closed position.
  • the calibration of the control pulse by the rocker 34 makes it possible to have a high motive power by supercharging the coil 14 of the remote control switch for a very short time fixed by T. It is noted that the measurement of the position of the movable contact 12 n 'does not intervene in this operating mode.
  • the selector 38 is switched to the CT position, the other two positions TL and ON-OFF being out of service.
  • the order of control at the output of door 60 of the first SE 1 sub-assembly depends on the state of the main movable contact 12 (detector 40) and on the first push button BP 1 , as formulated in relation (1) former.
  • the transition to the logic state 1 of the output voltage S 1 corresponding to a command to change the position of the contact 12 requires that the push button BP 1 and the detector 40 are at different logic levels one of the 'other, that is to say that the contact 12 is open when BP 1 is closed, or that the contact 12 is closed when the BP 1 push button is released which automatically returns to the open position.
  • the state change order (columns 2 and 4) issued by the output S 1 of the circuit 36 to the monostable flip-flop 34 causes the triac 25 to start and the coil 14 to be supplied, which remains energized for the duration T fixed by lever 34.
  • the selector 38 is switched to the ON-OFF position, the other two positions CT and TL being out of service.
  • the order of control at the output of door 70 of the second sub-assembly SE 2 depends on the state of the main movable contact 12 (detector 40), the first push button BP 1 and the second push button BP 2 , such as formulated in relation (2) above.
  • the change to logic state 1 of the output voltage S 3 takes place when the main contact 12 is closed and the push button BP 2 is actuated (column 8, fig. 4), or when the contact 12 is open and the push button BP 1 is closed (column 9, Fig. 4).
  • each position CT, TL and ON-OFF of the selector 38 corresponds a predetermined operating mode of the device 10, namely contactor, remote control switch and open-close. This mode is indicated by the LED signaling device. It is also possible to combine two pads of the selector 38 to obtain a particular sequence, for example by switching the selector both to the TL position and to the ON-OFF position.
  • the device By pressing the first push button BP, the device behaves as a remote control switch.
  • the closing of the second push button or auxiliary contact BP 2 causes the final opening of the contact 12 of the device 10.
  • a timer safety device (not shown) is arranged at the output of the monostable lever 34 to prevent several successive attempts to initiate the triac 25 due to repetitive operations of the push buttons BP 1 and BP 2 .
  • a protective member in particular a fuse or a thermistor (not shown) is connected in series with the coil of the electromagnet 14, the latter being thus protected in the event of possible destruction of the triac 25.

Abstract

The invention relates to an electronic device controlling the electromagnet of a multiple operation electrical apparatus. The electromagnetic coil (14) is connected in series to a triac (25) regulated by a generator (32) associated with a monostable flip-flop (34) designed to supply a single pulse of time-length T at each order from a logic circuit (36). A selector (38) cooperates with each output S1, S2, S3 . . . of the logic circuit (36) to choose a predetermined mode of operation of the apparatus (10), particularly remote-operated switch, contactor, or ON-OFF mode.

Description

L'invention est relative à un dispositif de commande d'un appareil électrique conforme au préambule de la revendication 1.The invention relates to a device for controlling an electrical device in accordance with the preamble of claim 1.

Le document EP-A-50 301 se rapporte à un relais bistable piloté par un circuit de commande électronique ayant plusieurs entrées à impulsions de commande adaptées à plusieurs modes de fonctionnement du relais.The document EP-A-50 301 relates to a bistable relay controlled by an electronic control circuit having several control pulse inputs adapted to several modes of operation of the relay.

Ce dernier possède une bobine de commande et un contact mobile. La bobine du relais est insérée dans la diagonale d'un pont de quatre transistors alimentés par une source de tension stabilisée Vcc. Le sens du courant d'excitation dans la bobine doit obligatoirement s'inverser à chaque changement d'état du relais. Ce cycle d'excitation est piloté par un circuit électronique de commande comprenant une bascule bistable dont les sorties complémentées sont reliées aux bases respectives des transistors par l'intermédiaire de portes logiques ET. Un compteur auxiliaire coopère avec ces portes ET pour autoriser l'excitation de la bobine durant un intervalle de temps prédéterminé. Un telle constitution du circuit de commutation à quatre transistors pour l'alimentation de la bobine, et la présence du compteur compliquent le dispositif de commande du relais bistable. L'enclenchement synchrone est impossible à obtenir avec ce dispositif. L'une des entrées permet un mode de fonctionnement en télérupteur, autorisant un changement d'état du contact mobile à chaque impulsion appliquée à ladite entrée. Une autre entrée peut recevoir un signal monostable, mais l'état ouvert ou fermé du contact mobile de l'appareil n'est pas pris en compte pour la commande de la bobine.The latter has a control coil and a movable contact. The relay coil is inserted diagonally across a bridge of four transistors supplied by a stabilized voltage source Vcc. The direction of the excitation current in the coil must be reversed at each change of state of the relay. This excitation cycle is controlled by an electronic control circuit comprising a flip-flop whose complemented outputs are connected to the respective bases of the transistors via AND logic gates. An auxiliary counter cooperates with these AND gates to authorize the excitation of the coil during a predetermined time interval. Such a constitution of the switching circuit with four transistors for supplying the coil, and the presence of the counter complicates the device for controlling the bistable relay. Synchronous engagement is impossible with this device. One of the inputs allows a mode of operation as a remote control switch, authorizing a change of state of the movable contact at each pulse applied to said input. Another input can receive a monostable signal, but the open or closed state of the mobile contact of the device is not taken into account for the control of the coil.

Le document DE-A 2816592 se rapporte à un circuit électronique de commande d'un relais bistable piloté par un thyristor. Le déblocage du thyristor à un instant prédéterminé provoque la décharge d'un condensateur accumulateur d'énergie dans la bobine du relais, laquelle est disposée électriquement en série avec le thyristor. Un seul mode de fonctionnement est possible avec ouverture et fermeture d'un circuit à courant alternatif au passage à zéro de la tension. La position du contact mobile du relais n'intervient pas dans l'élaboration du signal de commande.The document DE-A 2816592 relates to an electronic circuit for controlling a bistable relay controlled by a thyristor. Unlocking the thyristor at a predetermined instant causes the discharge of an energy storage capacitor in the relay coil, which is electrically arranged in series with the thyristor. Only one operating mode is possible with opening and closing of an alternating current circuit at zero voltage crossing. The position of the moving contact of the relay does not intervene in the development of the control signal.

Les documents DE-A 2 007 618 et DE-A 2 601 799 décrivent chacun un circuit d'alimentation d'une bobine d'un contacteur en série avec un triac. Un circuit de commande du triac autorise l'excitation de la bobine au voisinage du passage à zéro de la tension alternative. Ces circuits classiques permettent un seul mode de fonctionnement en contacteur.The documents DE-A 2 007 618 and DE-A 2 601 799 each describe a circuit for supplying a coil of a contactor in series with a triac. A triac control circuit allows the excitation of the coil in the vicinity of the zero crossing of the alternating voltage. These conventional circuits allow a single operating mode in contactor.

L'objet de l'invention consiste à réaliser un appareil électrique modulaire ayant un actionneur à fonctionnement multiple par sélecteur et commande statique autorisant le contrôle de l'excitation de l'électro-aimant en fonction du mode de fonctionnement choisi.The object of the invention is to provide a modular electrical device having an actuator with multiple operation by selector and static control allowing the control of the excitation of the electromagnet depending on the operating mode chosen.

Le dispositif de commande d'un appareil électrique selon l'invention est caractérisé en ce que le mécanisme d'entraînement à électro-aimant moteur provoque un changement d'état du contact mobile lors de la phase d'excitation de la bobine de l'électro-aimant, en ce que pendant la durée T fixée par le circuit temporisateur, les impulsions du circuit générateur apparaissent au voisinage du passage à zéro de la tension alternative d'alimentation de la bobine, en ce que le circuit temporisateur est formé par une bascule monostable ayant une sortie connectée à l'entrée du circuit générateur, et une entrée raccordée à la sortie du circuit logique, l'ensemble étant agencé pour assurer l'enclenchement synchrone de l'électro-aimant, et en ce que le circuit électronique de contrôle comporte de plus:

  • - des moyens de commande (K) susceptibles de faire varier l'état des entrées du circuit logique et comportant un premier contact auxiliaire (BP1) actionné manuellement ou automatiquement par un automate ou un programmateur extérieur et comportant en outre un détecteur de position du contact mobile de l'appareil électrique,
  • - un sélecteur pour choisir un des modes de fonctionnement, contacteur, télérupteur et ON-OFF de l'appareil électrique, et ayant une pluralité de plots de réglage (CT, TL, ON-OFF) insérés électriquement entre la sortie du circuit logique et l'entrée de la bascule monostable,
  • - ledit circuit logique comprenant un premier sous-ensemble (SE 1) d'opérateurs combinatoires susceptibles de délivrer par l'intermédiaire du plot (CT) pour le mode de fonctionnement «contacteur», un signal de sortie (S1) à la bascule monostable, lorsque le premier contact auxiliaire (BP1) des moyens de commande (K) est fermé, pendant que le détecteur de position indique simultanément une ouverture du contact mobile de l'appareil électrique, et vice-versa, lorsque le premier contact auxiliaire (BP1) est ouvert pendant que le détecteur de position signale une fermeture du contact mobile.
The control device of an electrical device according to the invention is characterized in that the motor electromagnet drive mechanism causes a change in state of the movable contact during the excitation phase of the coil of the electromagnet, in that during the duration T fixed by the timer circuit, the pulses of the generator circuit appear in the vicinity of the zero crossing of the alternating supply voltage of the coil, in that the timer circuit is formed by a monostable flip-flop having an output connected to the input of the generator circuit, and an input connected to the output of the logic circuit, the assembly being arranged to ensure the synchronous engagement of the electromagnet, and in that the electronic circuit also includes:
  • - control means (K) capable of varying the state of the inputs of the logic circuit and comprising a first auxiliary contact (BP1) actuated manually or automatically by an automaton or an external programmer and further comprising a contact position detector mobile electrical appliance,
  • - a selector to choose one of the operating modes, contactor, remote control and ON-OFF of the electrical device, and having a plurality of adjustment pads (CT, TL, ON-OFF) electrically inserted between the output of the logic circuit and the entrance to the monostable scale,
  • - Said logic circuit comprising a first subset (SE 1) of combinational operators capable of delivering via the stud (CT) for the “contactor” operating mode, an output signal (S1) to the monostable rocker , when the first auxiliary contact (BP1) of the control means (K) is closed, while the position detector simultaneously indicates an opening of the movable contact of the electrical appliance, and vice versa, when the first auxiliary contact (BP1 ) is open while the position detector signals closing of the movable contact.

L'emploi d'un triac associé à son circuit de commande permet d'obtenir une fiabilité de fonctionnement liée au calibrage de l'impulsion de commande pour l'amorçage du triac, et à la disponibilité d'une puissance motrice élevée en suralimentant la bobine de l'électro-aimant pendant un temps très court. Le volume de l'électro-aimant est réduit et autorise de plus un enclenchement synchrone qui consiste à alimenter la bobine en début d'une alternance de la tension alternative d'alimentation.The use of a triac associated with its control circuit makes it possible to obtain operating reliability linked to the calibration of the control pulse for priming the triac, and to the availability of high motive power by supercharging the solenoid coil for a very short time. The volume of the electromagnet is reduced and also allows synchronous engagement which consists in supplying the coil at the start of an alternation of the alternating supply voltage.

Le circuit logique comporte une pluralité de sorties délivrant des signaux de sortie distincts selon l'état des signaux d'entrée déterminés par des moyens de commande. Ces derniers comportent un ou des contacts auxiliaires actionnés manuellement ou automatiquement par un automate ou un programmateur et un détecteur de position du contact mobile de l'appareil.The logic circuit includes a plurality of outputs delivering separate output signals according to the state of the input signals determined by control means. The latter comprise one or more auxiliary contacts actuated manually or automatically by an automaton or a programmer and a position detector of the mobile contact of the device.

Le sélecteur permet la prise en compte d'un signal de sortie prédéterminé du circuit logique correspondant à un mode de fonctionnement particulier de l'appareil, à savoir en télérupteur, en contacteur ou à ouverture - fermeture. Le mode de fonctionnement est indiqué à l'utilisateur au moyen d'un dispositif de signalisation coopérant avec le sélecteur.The selector allows the taking into account of a predetermined output signal of the logic circuit corresponding to a particular mode of operation of the device, namely in remote control switch, in contactor or in opening - closing. The mode is indicated to the user by means of a signaling device cooperating with the selector.

D'autres avantages et caractéristiques ressortiront plus clairement de l'exposé qui va suivre de différents modes de mise en oeuvre de l'invention, donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels:

  • - la figure 1 montre le schéma synoptique d'un appareil électrique à électro-aimant commandé par impulsions de courte durée au moyen du circuit électronique selon l'invention;
  • - la figure 2a représente un mode de réalisation d'un appareil modulaire et du circuit électronique associé logés dans deux boîtiers juxtaposés;
  • - la figure 2b est une variante de la fig. 2a, à boîtier commun intégrant l'appareil et le circuit électronique;
  • -la figure 3 illustre le circuit logique du module de commande selon la fig. 1;
  • - la figure 4 représente pour les trois positions du sélecteur la forme des signaux de commande en différents points du circuit de la fig. 3.
Other advantages and characteristics will emerge more clearly from the description which follows of different embodiments of the invention, given by way of nonlimiting examples and represented in the appended drawings, in which:
  • - Figure 1 shows the block diagram of an electrical device with electromagnet controlled by short duration pulses by means of the electronic circuit according to the invention;
  • - Figure 2a shows an embodiment of a modular device and the associated electronic circuit housed in two juxtaposed boxes;
  • - Figure 2b is a variant of FIG. 2a, with a common housing integrating the apparatus and the electronic circuit;
  • FIG. 3 illustrates the logic circuit of the control module according to FIG. 1;
  • - Figure 4 shows for the three positions of the selector the shape of the control signals at different points in the circuit of FIG. 3.

Sur les figures 1 et 2a est représenté un pôle d'un appareil électrique 10 modulaire dont le mécanisme d'actionnement du contact 12 mobile comporte un électro-aimant 14 piloté par un circuit électronique 16 de commande. L'appareil électrique 10 est constitué par un télérupteur dont le mécanisme provoque un changement d'état du contact mobile 12 lors de chaque excitation de la bobine de l'électro-aimant 14. Ce télérupteur pourrait être remplacé par tout autre appareillage bistable à basse tension, notamment un disjoncteur à télécommande de fermeture et d'ouverture.In Figures 1 and 2a is shown a pole of a modular electrical device 10 whose actuation mechanism of the movable contact 12 comprises an electromagnet 14 controlled by an electronic control circuit 16. The electrical device 10 is constituted by a remote control switch, the mechanism of which causes a change in state of the movable contact 12 during each excitation of the coil of the electromagnet 14. This remote control switch could be replaced by any other low bistable device voltage, including a remote control closing and opening circuit breaker.

L'appareil 10 est logé dans un boîtier 18 moulé disposé côte-à-côte avec le module 20 du circuit électronique 16. L'appareil 10 comporte une première paire de bornes 22a, 22b de raccordement du circuit d'utilisation en liaison avec le contact mobile 12, et une deuxième paire de bornes 24a, 24b de connexion de l'électro-aimant 14 au circuit électronique 16 du module 20 de commande. L'électro-aimant 14 du mécanisme d'actionnement du contact mobile 12 est agencé à l'intérieur du boîtier 18, mais il est clair qu'il pourrait être disposé dans un boîtier intercalaire entre le boîtier 18 et le module 20 lorsque l'appareil 10 est un disjoncteur télécommandé.The device 10 is housed in a molded box 18 placed side by side with the module 20 of the electronic circuit 16. The device 10 comprises a first pair of terminals 22a, 22b for connection of the use circuit in connection with the movable contact 12, and a second pair of terminals 24a, 24b for connection of the electromagnet 14 to the electronic circuit 16 of the control module 20. The electromagnet 14 of the mechanism for actuating the movable contact 12 is arranged inside the box 18, but it is clear that it could be placed in an intermediate box between the box 18 and the module 20 when the device 10 is a remote controlled circuit breaker.

L'électro-aimant 14 est branché en série avec un interrupteur statique commandé, notamment un triac 25, destiné à ouvrir ou à fermer le circuit d'alimentation 26 de l'électro-aimant 14, raccordé à une source de tension alternative U par des conducteurs de puissance P et N associés aux bornes 27a, 27b du module 20. Le triac 25 est incorporé dans le module 20 lequel est raccordé électriquement à l'électro-aimant 14 par des conducteurs de liaison 28a, 28b connectés respectivement aux bornes 24a, 24b de l'appareil 10. Le circuit d'alimentation 26 de l'appareil 10 comprend en série le conducteur N, la borne 27b du module 20, le triac 25, le conducteur de liaison 28b, la borne 24b, la bobine de l'électro-aimant 14, la borne 24a, le conducteur de liaison 28a, la borne 27a et le conducteur P. La source de tension U est formée à titre d'exemple par le réseau alternatif 220 Volts. Une résistance RA est intercalée entre la borne 27a et une alimentation 30 constituée par un circuit régulateur de tension qui fournit la tension continue d'alimentation au circuit électronique 16 à partir de la tension alternative U du réseau.The electromagnet 14 is connected in series with a controlled static switch, in particular a triac 25, intended to open or close the supply circuit 26 of the electromagnet 14, connected to an alternating voltage source U by power conductors P and N associated with terminals 27a, 27b of the module 20. The triac 25 is incorporated in the module 20 which is electrically connected to the electromagnet 14 by connection conductors 28a, 28b connected respectively to the terminals 24a , 24b of the device 10. The supply circuit 26 of the device 10 comprises in series the conductor N, the terminal 27b of the module 20, the triac 25, the connecting conductor 28b, the terminal 24b, the coil of the electromagnet 14, the terminal 24a, the connecting conductor 28a, the terminal 27a and the conductor P. The voltage source U is formed by way of example by the 220 V alternating network. A resistor R A is interposed between terminal 27a and a power supply 30 constituted by a voltage regulator circuit which supplies the DC supply voltage to the electronic circuit 16 from the AC voltage U of the network.

L'électrode de commande du triac 25 est reliée à un circuit générateur 32 susceptible de délivrer des impulsions synchrones à chaque demi-période de la tension U et au voisinage du zéro de tension pour l'amorçage du triac 25. Au circuit générateur 32 est associée une bascule monostable 34 dont la sortie fournit une impulsion unique à chaque ordre appliqué à l'entrée en provenance d'un circuit logique 36 de commande. La largeur T de l'impulsion de sortie de la bascule 34 détermine le temps durant lequel le circuit générateur 32 fournira des impulsions d'amorçage au triac 25, c'est-à-dire le temps de passage du courant dans l'électro-aimant 14 de l'appareil 10. La bascule monostable 34 est formée par un trigger de Schmitt ou par tout autre opérateur ou circuit de mise en forme dont le changement d'état de 0 à 1 de l'entrée amène la sortie à l'état 1, la sortie restant dans cet état pendant une durée T définie par les caractéristiques de l'opérateur, indépendamment du temps pendant lequel l'entrée reste à l'état 1.The triac 25 control electrode is connected to a generator circuit 32 capable of delivering synchronous pulses at each half-period of the voltage U and in the vicinity of zero voltage for priming the triac 25. At the generator circuit 32 is associated with a monostable flip-flop 34, the output of which provides a single pulse for each order applied to the input from a logic control circuit 36. The width T of the output pulse of the flip-flop 34 determines the time during which the generator circuit 32 will supply ignition pulses to the triac 25, that is to say the time of current flow in the electro- magnet 14 of the device 10. The monostable rocker 34 is formed by a Schmitt trigger or by any other operator or shaping circuit whose change of state from 0 to 1 of the input brings the output to the state 1, the output remaining in this state for a duration T defined by the characteristics of the operator, regardless of the time during which the input remains in state 1.

Un sélecteur 38 à trois plots de réglage est intercalé électriquement entre le circuit logique de commande 36 et la bascule monostable 34 pour choisir l'une des sorties du circuit logique 36 correspondant à un mode de fonctionnement prédéterminé de l'appareil 10. La première position CT (sortie Si) impose un fonctionnement en contacteur, la seconde position TL (sortie S2) correspond au mode de fonctionnement en télérupteur, et la troisième ON-OFF (sortie S3) à un fonctionnement à ouverture et fermeture dépendant de la position des contacts 12 de l'appareil. La commutation du sélecteur 38 s'opère depuis la face avant du module 20, et les trois modes de fonctionnement distincts dépendent de l'allure des signaux de commande du circuit logique 36 coopérant en combinaison avec un détecteur 40 de position des contacts 12 du télérupteur 10 et des moyens de commande K constitués par un ou des contacts auxiliaires actionnés par des boutons poussoirs, un programmateur ou un automate. Les contacts auxiliaires des moyens de commande K du circuit logique 36 sont reliés électriquement par un circuit de liaison 42 à des bornes 44a, 44b du module 20.A selector 38 with three adjustment pads is electrically interposed between the logic control circuit 36 and the monostable rocker 34 to choose one of the outputs of the logic circuit 36 corresponding to a predetermined operating mode of the device 10. The first position CT (output Si) requires contactor operation, the second position TL (output S 2 ) corresponds to the operating mode as a remote control switch, and the third ON-OFF (output S 3 ) to open and close operation depending on the position contacts 12 of the device. The switching of the selector 38 takes place from the front face of the module 20, and the three distinct operating modes depend on the shape of the control signals of the logic circuit 36 cooperating in combination with a detector 40 of the position of the contacts 12 of the remote control switch 10 and control means K constituted by one or more auxiliary contacts actuated by pushbuttons, a programmer or an automaton. The auxiliary contacts of the control means K of the logic circuit 36 are electrically connected by a link circuit 42 to terminals 44a, 44b of the module 20.

Le détecteur 40 de position des contacts 12 de l'appareil 10 comporte à titre d'exemple un relais Reed dont le contact de commande 46 est actionné par un aimant permanent 48 mobile solidaire d'un organe de transmission 50 du mouvement du contact mobile principal 12 de l'appareil 10. Le contact de commande 46 du détecteur 40 est soit ouvert lorsque le contact 12 mobile de l'appareil 10 est lui-même ouvert, soit fermé en position de fermeture du contact 12.The detector 40 for the position of the contacts 12 of the device 10 comprises, for example, a reed relay, the control contact 46 of which is actuated by a permanent magnet 48 movable secured to a member 50 for transmitting the movement of the main movable contact 12 of the device 10. The control contact 46 of the detector 40 is either open when the movable contact 12 of the device 10 is itself open, or closed in the closed position of the contact 12.

La figure 2b représente un appareil 100 monobloc intégrant l'ensemble circuit électronique 16 et télérupteur à électro-aimant 14. Au sélecteur 38 est associé un dispositif de signalisation (non représenté), par exemple à diodes électro-lumineuses, qui indique en face avant le mode de fonctionnement de l'appareil 10 (fig.2a) ou 100 (fig.2b) selon la position du sélecteur 38.FIG. 2b represents a one-piece device 100 integrating the electronic circuit 16 and electromagnet remote control 14 assembly. The selector 38 is associated with a signaling device (not shown), for example with light-emitting diodes, which indicates on the front face the operating mode of the device 10 (fig.2a) or 100 (fig.2b) depending on the position of the selector 38.

La figure 3 montre le schéma du circuit logique 36 de commande de la bascule monostable 34. Les moyens de commande K (fig. 1 et 2a) comportent un premier bouton poussoir BP, utilisé pour générer un signal commun E1 de commande correspondant à la fonction contacteur, télérupteur et fermeture ON. Un deuxième bouton poussoir BP2 sert à délivrer un signal de commande E2 susceptible d'assurer la fonction ouverture OFF. Les deux signaux de commande E1' E2 présentent chacun deux états logiques 0 ou 1 correspondant respectivement à l'ouverture et à la fermeture des boutons poussoirs BP,, BP2. Un troisième signal de commande E3 provient du détecteur de position 40 tel que l'ouverture ou la fermeture du contact mobile principal 12 de l'appareil 10 associé se traduit respectivement par un état logique 0 ou 1 à la sortie du détecteur 40. La logique positive est ainsi utilisée pour expliquer le fonctionnement du circuit 36.FIG. 3 shows the diagram of the logic circuit 36 for controlling the monostable lever 34. The control means K (FIGS. 1 and 2a) comprise a first push button BP, used to generate a common control signal E 1 corresponding to the contactor, remote control and ON closing function. A second push button BP 2 is used to deliver a control signal E 2 capable of ensuring the OFF opening function. The two control signals E 1 ' E 2 each have two logic states 0 or 1 corresponding respectively to the opening and closing of the push buttons BP ,, BP 2 . A third control signal E 3 comes from the position detector 40 such that the opening or closing of the main movable contact 12 of the associated device 10 results respectively in a logic state 0 or 1 at the output of the detector 40. The positive logic is thus used to explain the operation of circuit 36.

Le circuit logique 36 comprend un premier sous-ensemble SE1 muni d'une porte logique NAND 60 qui fournit un signal de sortie S, appliqué par l'intermédiaire d'une diode D1 au premier plot CT du sélecteur 38. A l'une des entrées de la porte 60 est connectée la sortie d'une porte NAND 62 dont l'une des entrées est branchée à la sortie du détecteur 40, et dont l'autre entrée est reliée par une porte NON 64 à la sortie du bouton poussoir BP1. L'autre entrée de la porte 60 est connectée à une autre porte NAND 66 reliée d'une part au bouton poussoir BP, et d'autre part au détecteur 40 par l'intermédiaire d'une porte NON 68. On remarque que la porte logique NAND 62 est sensible aux signaux d'entrée E1 et E3, tandis que les deux entrées de la porte 66 reçoivent des signaux de commande E1 et E3. Ce premier sous-ensemble SE1 engendre la fonction contacteur, et la tension de sortie S, de la porte NAND 60 est définie par la relation suivante:

Figure imgb0001
The logic circuit 36 comprises a first sub-assembly SE 1 provided with a NAND logic gate 60 which supplies an output signal S, applied via a diode D 1 to the first pad CT of the selector 38. At the one of the inputs of the door 60 is connected to the output of a NAND gate 62, one of the inputs of which is connected to the output of the detector 40, and the other input of which is connected by a NON 64 gate to the output of the button push button BP 1 . The other input of door 60 is connected to another NAND door 66 connected on the one hand to the push button BP, and on the other hand to the detector 40 via a door NO 68. It is noted that the door NAND logic 62 is sensitive to input signals E 1 and E 3 , while the two inputs of gate 66 receive control signals E 1 and E 3 . This first sub-assembly SE 1 generates the contactor function, and the output voltage S, of the NAND gate 60 is defined by the following relation:
Figure imgb0001

La table de vérité ci-dessous, représente les états logiques des signaux en différents points du sous-ensemble SE1 (logique contacteur).

Figure imgb0002
Figure imgb0003
 The truth table below represents the logical states of the signals at different points in the SE 1 subset (contactor logic).
Figure imgb0002
Figure imgb0003

Dans cette table, l'état logique 0 représente une absence d'information ou de tension, tandis que l'état logique 1 s'identifie à une présence d'information de tension (logique positive). On remarque que la tension de sortie S1 est égale à 1 pour la combinaison E 1 . E3 ou E1. E 3 , et à zéro pour la combinaison E1. E3 ou E 1 .E 3 . Pour que le signal de sortie S, du sous-ensemble SE, passe à l'état logique 1 correspondant à un ordre de changement de position du contact 12 de l'appareil 10, il est nécessaire que les signaux d'entrée E1 et E3 présentent un état logique différent l'un de l'autre. Le signal de sortie S1 reste à l'état 0 lorsque les entrées de SE1 reçoivent simultanément des signaux de commande E1 et E3 ayant le même état logique.In this table, logic state 0 represents an absence of information or voltage, while logic state 1 identifies with the presence of voltage information (positive logic). Note that the output voltage S 1 is equal to 1 for the combination E 1 . E 3 or E 1 . E 3 , and zero for the combination E 1 . E 3 or E 1 .E 3 . In order for the output signal S, of the subset SE, to pass to the logic state 1 corresponding to an order to change the position of the contact 12 of the device 10, it is necessary that the input signals E 1 and E 3 have a logic state different from each other. The output signal S 1 remains at state 0 when the inputs of SE 1 simultaneously receive control signals E 1 and E 3 having the same logic state.

Le deuxième plot TL du sélecteur 38 est connecté par l'intermédiaire d'une diode D2 directement au premier bouton poussoir BP1. La tension de sortie S2 appliquée au plot TL initialise la fonction télérupteur engendrée exclusivement par l'actionnement du bouton poussoir BP1. A chaque fermeture de BP1 correspond un état logique 1 de S2 susceptible de provoquer un changement d'état du contact 12 de l'appareil 10 indépendamment des positions du détecteur 40 et du deuxième bouton poussoir BP2.The second stud TL of the selector 38 is connected via a diode D 2 directly to the first push button BP 1 . The output voltage S 2 applied to the terminal TL initializes the remote control function generated exclusively by the actuation of the push button BP 1 . Each closing of BP 1 corresponds to a logic state 1 of S 2 capable of causing a change of state of the contact 12 of the device 10 independently of the positions of the detector 40 and of the second push button BP 2 .

Le troisième plot ON-OFF du sélecteur 38 est relié par une diode D3 à une porte NAND 70 d'un deuxième sous-ensemble SE2 du circuit 36. L'une des entrées de la porte 70 est branchée à la sortie d'une porte NAND 72 reliée en parallèle aux bornes d'entrée de la porte 66, la porte 72 étant sensible aux signaux de commande E1 et E 3 . L'autre entrée de la porte 70 est pilotée par une autre porte NAND 74 connectée au détecteur 40 et au deuxième bouton poussoir BP2 pour recevoir les signaux de commande E2 et E3. Ce deuxième sous-ensemble SE2 à trois variables d'entrées procure la fonction ouverture - fermeture, et la tension de sortie S3 de la porte 70 est déterminée par la relation logique suivante:

Figure imgb0004
dans laquelle les tensions de commande E1' E2 et E3 appliquées aux entrées de SE2 correspondent respectivement à l'état du premier bouton poussoir BP,, du deuxième bouton poussoir BP2 et du détecteur 40 de position à relais Reed. La table de vérité à logique positive montre les états logiques des signaux en différents points du sous-ensemble SE2:
Figure imgb0005
 The third ON-OFF pad of the selector 38 is connected by a diode D 3 to a NAND gate 70 of a second sub-assembly SE 2 of the circuit 36. One of the inputs of the gate 70 is connected to the output of a NAND gate 72 connected in parallel to the input terminals of the gate 66, the gate 72 being sensitive to the control signals E 1 and E 3 . The other input of door 70 is controlled by another NAND door 74 connected to the detector 40 and to the second push button BP 2 to receive the control signals E 2 and E 3 . This second subset SE 2 with three input variables provides the opening - closing function, and the output voltage S 3 of the gate 70 is determined by the following logical relation:
Figure imgb0004
 in which the control voltages E 1 ' E 2 and E 3 applied to the inputs of SE 2 correspond respectively to the state of the first push button BP ,, of the second push button BP 2 and of the position detector 40 with Reed relay. The positive logic truth table shows the logical states of the signals at different points of the SE 2 subset:
Figure imgb0005

Le passage à l'état logique 1 de la tension de sortie S3 intervient pour la combinaison E2. E3 ou E1. E 3 , c'est-à-dire lorsque les tensions de commande E2 et E3 se trouvent à l'état 1 correspondant à la fermeture simultanée du bouton poussoir BP2 et du contact 12 de l'appareil 10, ou lorsque la tension de commande E, est à l'état 1 (fermeture de BP,) pendant que la tension de commande E3 se trouve en même temps à l'état 0 (ouverture du contact 12).The transition to logic state 1 of the output voltage S 3 occurs for the combination E 2 . E 3 or E 1 . E 3 , that is to say when the control voltages E 2 and E 3 are in state 1 corresponding to the simultaneous closing of the push button BP 2 and of the contact 12 of the device 10, or when the control voltage E is in state 1 (closing of BP,) while the control voltage E 3 is at the same time in state 0 (opening of contact 12).

On remarque que les deux sous-ensembles SE, et SE2 du circuit logique 36 sont réalisés au moyen de portes NAND et NON, mais il est évident que le circuit 36 pourrait être conçu avec d'autres opérateurs combinatoires permettant d'obtenir les fonctions logiques (1) et (2) correspondant aux tensions de sortie S, et S3.It is noted that the two subsets SE, and SE 2 of the logic circuit 36 are produced by means of NAND and NON gates, but it is obvious that the circuit 36 could be designed with other combinational operators making it possible to obtain the functions logic (1) and (2) corresponding to the output voltages S, and S 3 .

Le bouton poussoir BP,, le bouton poussoir BP2 et le détecteur 40 sont connectés respectivement à l'un des pôles de l'alimentation 30 par des résistances R1' R2, R3 et à l'autre pôle par des résistances R6, R4 et R5 en série avec une diode D5.The push button BP, the push button BP 2 and the detector 40 are connected respectively to one of the poles of the power supply 30 by resistors R 1 ' R 2 , R 3 and to the other pole by resistors R 6 , R 4 and R 5 in series with a diode D 5 .

Le fonctionnement de l'appareil 10 associé au circuit électronique 16 est le suivant, la figure 4 illustrant la forme des signaux en différents points du circuit 16 selon la position du sélecteur 38:The operation of the apparatus 10 associated with the electronic circuit 16 is as follows, FIG. 4 illustrating the shape of the signals at different points of the circuit 16 according to the position of the selector 38:

1) MODE TELERUPTEUR1) TELERUPTEUR MODE

Le sélecteur 38 se trouve en position TL alors que les deux autres positions CT et ON-OFF sont hors service. L'appareil 10 se comporte comme un télérupteur. La sortie S2 du circuit logique 36 est connectée à l'entrée de la bascule monostable 34. A chaque fermeture du premier bouton poussoir BP, correspond un ordre de commande à la sortie S2 (état logique 1). La bascule 34 fournit une impulsion unique de durée T constante au circuit générateur 32 à chaque ordre de la sortie S2. Les impulsions délivrées par le circuit générateur 32 pour l'amorçage du triac 25 apparaissent de façon synchrone à chaque demi-période et au voisinage du zéro de tension pendant la durée T de l'impulsion de commande de la bascule monostable 34. II en résulte un enclenchement synchrone. Le temps de passage du courant dans la bobine 14 du télérupteur est très limité, même si le bouton poussoir BP1 reste enfoncé en position de fermeture. La calibration de l'impulsion de commande par la bascule 34 permet de disposer d'une puissance motrice élevée en suralimentant la bobine 14 du télérupteur pendant un temps très court fixé par T. On remarque que la mesure de la position du contact mobile 12 n'intervient pas dans ce mode de fonctionnement.The selector 38 is in the TL position while the other two positions CT and ON-OFF are out of service. The apparatus 10 behaves like a remote control switch. The output S 2 of the logic circuit 36 is connected to the input of the monostable flip-flop 34. Each time the first push button BP is closed, there is a command order for the output S 2 (logic state 1). The flip-flop 34 supplies a single pulse of constant duration T to the generator circuit 32 at each order of the output S 2 . The pulses delivered by the generator circuit 32 for priming the triac 25 appear synchronously at each half-period and in the vicinity of the voltage zero during the duration T of the control pulse of the monostable rocker 34. It results therefrom synchronous engagement. The passage time of the current in the coil 14 of the remote control switch is very limited, even if the push button BP 1 remains pressed in the closed position. The calibration of the control pulse by the rocker 34 makes it possible to have a high motive power by supercharging the coil 14 of the remote control switch for a very short time fixed by T. It is noted that the measurement of the position of the movable contact 12 n 'does not intervene in this operating mode.

2) MODE CONTACTEUR2) CONTACTOR MODE

Le sélecteur 38 est commuté sur la position CT, les deux autres positions TL et ON-OFF étant hors service. L'ordre de commande à la sortie de la porte 60 du premier sous-ensemble SE1 dépend de l'état du contact mobile principal 12 (détecteur 40) et du premier bouton poussoir BP1, tel que formulé dans la relation (1) précédente. Le passage à l'état logique 1 de la tension de sortie S1 correspondant à un ordre de changment de position du contact 12, nécessite que le bouton poussoir BP1 et le détecteur 40 se trouvent à des niveaux logiques différents l'un de l'autre, c'est-à-dire que le contact 12 soit ouvert lors de la fermeture de BP1, ou que le contact 12 soit fermé lorsqu'on relâche le bouton poussoir BP1 lequel revient automatiquement en position d'ouverture. Dans le premier cas, le maintien du bouton BP1 en position fermée assure la fermeture du contact 12 de l'appareil 10 (voir colonne 2, fig.4). Dans le deuxième cas, le relâchement du bouton BP, provoque le retour du contact 12 vers la position d'ouverture (voir colonne 4, fig. 4). L'appareil 10 se comporte ainsi en contacteur. On remarque que l'enfoncement du bouton poussoir BP, en position fermée du contact 12 n'engendre aucun changement d'état de l'appareil 10 (colonne 3). II en est de même lorsqu'on relâche le bouton BP1 et que le contact 12 se trouve ouvert (colonne 5). Dans ces deux derniers cas, le contact 12 reste dans sa position initiale.The selector 38 is switched to the CT position, the other two positions TL and ON-OFF being out of service. The order of control at the output of door 60 of the first SE 1 sub-assembly depends on the state of the main movable contact 12 (detector 40) and on the first push button BP 1 , as formulated in relation (1) former. The transition to the logic state 1 of the output voltage S 1 corresponding to a command to change the position of the contact 12, requires that the push button BP 1 and the detector 40 are at different logic levels one of the 'other, that is to say that the contact 12 is open when BP 1 is closed, or that the contact 12 is closed when the BP 1 push button is released which automatically returns to the open position. In the first case, maintaining the BP button 1 in the closed position ensures the closure of the contact 12 of the device 10 (see column 2, fig. 4). In the second case, the release of the BP button causes the contact 12 to return to the open position (see column 4, fig. 4). The device 10 thus behaves as a contactor. Note that pressing the push button BP, in the closed position of the contact 12 does not cause any change in state of the device 10 (column 3). The same is true when the button BP 1 is released and the contact 12 is open (column 5). In the latter two cases, the contact 12 remains in its initial position.

L'ordre de changement d'état (colonnes 2 et 4) émis par la sortie S1 du circuit 36 à la bascule monostable 34 provoque l'amorçage du triac 25 et l'alimentation de la bobine 14, laquelle reste excitée pendant la durée T fixée par la bascule 34.The state change order (columns 2 and 4) issued by the output S 1 of the circuit 36 to the monostable flip-flop 34 causes the triac 25 to start and the coil 14 to be supplied, which remains energized for the duration T fixed by lever 34.

3) MODE OUVERTURE - FERMETURE3) OPENING - CLOSING MODE

Le sélecteur 38 est commuté sur la position ON-OFF, les deux autres positions CT et TL étant hors service. L'ordre de commande à la sortie de la porte 70 du deuxième sous-ensemble SE2 dépend de l'état du contact mobile principal 12 (détecteur 40), du premier bouton poussoir BP1 et du deuxième bouton poussoir BP2, tel que formulé dans la relation (2) précédente. Le passage à l'état logique 1 de la tension de sortie S3, s'opère lorsque le contact principal 12 est fermé et que l'on actionne le bouton poussoir BP2 (colonne 8, fig. 4), ou lorsque le contact 12 est ouvert et que l'on ferme le bouton poussoir BP1 (colonne 9, Fig. 4).The selector 38 is switched to the ON-OFF position, the other two positions CT and TL being out of service. The order of control at the output of door 70 of the second sub-assembly SE 2 depends on the state of the main movable contact 12 (detector 40), the first push button BP 1 and the second push button BP 2 , such as formulated in relation (2) above. The change to logic state 1 of the output voltage S 3 takes place when the main contact 12 is closed and the push button BP 2 is actuated (column 8, fig. 4), or when the contact 12 is open and the push button BP 1 is closed (column 9, Fig. 4).

Il en résulte l'excitation de la bobine 14 durant le temps T déterminé par la bascule 34, de manié- re à provoquer dans le premier cas l'ouverture du contact 12, et dans le deuxième cas sa fermeture. Les autres séquences sont indiquées sur la table de vérité.This results in the excitation of the coil 14 during the time T determined by the flip-flop 34, so as to cause in the first case the opening of the contact 12, and in the second case its closing. The other sequences are indicated on the truth table.

On remarque qu'à chaque position CT, TL et ON-OFF du sélecteur 38 correspond un mode de fonctionnement prédéterminé de l'appareil 10, à savoir contacteur, télérupteur et ouverture-fermeture. Ce mode est indiqué par le dispositif de signalisation à diodes LED. Il est également possible de combiner deux plots du sélecteur 38 pour obtenir une séquence particulière, par exemple en commutant le sélecteur à la fois sur la position TL et sur la position ON-OFF. En actionnant le premier bouton poussoir BP,, l'appareil se comporte en télérupteur. La fermeture du deuxième bouton poussoir ou contact auxiliaire BP2 provoque l'ouverture définitive du contact 12 de l'appareil 10.It is noted that at each position CT, TL and ON-OFF of the selector 38 corresponds a predetermined operating mode of the device 10, namely contactor, remote control switch and open-close. This mode is indicated by the LED signaling device. It is also possible to combine two pads of the selector 38 to obtain a particular sequence, for example by switching the selector both to the TL position and to the ON-OFF position. By pressing the first push button BP, the device behaves as a remote control switch. The closing of the second push button or auxiliary contact BP 2 causes the final opening of the contact 12 of the device 10.

Un dispositif de sécurité à temporisateur (non représenté) est agencé à la sortie de la bascule monostable 34 pour empêcher plusieurs tentatives successives d'amorçage du triac 25 dues à des manoeuvres répétitives des boutons poussoirs BP1 et BP2. Un organe de protection, notamment un fusible ou une thermistance (non représenté) est branché en série avec la bobine de l'électro-aimant 14, ce dernier étant ainsi protégé en cas de destruction éventuelle du triac 25.A timer safety device (not shown) is arranged at the output of the monostable lever 34 to prevent several successive attempts to initiate the triac 25 due to repetitive operations of the push buttons BP 1 and BP 2 . A protective member, in particular a fuse or a thermistor (not shown) is connected in series with the coil of the electromagnet 14, the latter being thus protected in the event of possible destruction of the triac 25.

Claims (5)

1. Control device for an electrical apparatus (10) with a movable contact (12) and an electromagnetic driving mechanism (14) capable to induce a change of condition of the movable contact (12), said device comprising a power supply circuit (30) to the electromagnet (14), and a control unit comprising a controlled static switch (25), connected electrically in series with the coil of the electromagnet (14), and an electronic control circuit comprising:
- a pulse generating circuit (32) for the triggering of the controlled static switch (25),
- a time-delay circuit connected on the one hand to the input of the pulse generating circuit (32) and on the other hand to a logic circuit (36) in order to deliver to the generating circuit (32) a single pulse of a predetermined time-length T at each order coming from the logic circuit (36), the triggering of said static switch being inhibited outside the time length T, so as to limit the current passing through the coil of the electromagnet (14),
-and control inputs authorizing several operating modes of the electric apparatus (10) one of which being the remote-operate mode, determined by the change in condition of the movable contact (12) at each pulse delivered to one of said inputs, characterized in that the electromagnetic driving mechanism (14) induces a change in condition of the movable contact (12) during the energizing phase of the electromagnet coil, in that during the time length T determined by the time delay circuit, the pulses of the generating circuit (32) appear on coil feeding a.c. voltage dropping close to zero, in that the time-delay circuit is constituted by a monostable flip-flop (34) having an output connected to the input of the generating circuit (32) and an input connected to the output of the logic circuit (36), the whole being arranged to ensure the synchronous switching of the electromagnet (14), and that the electronic control circuit (16) comprises further:
- control means (K) which can change the condition of the inputs of the logic circuit (36) and which comprise a first auxiliary contact (BP1) actuated manually or automatically by an automatic relay or an external programmer and comprising further a position detector (40) of movable contact (12) of apparatus (10),
- a selector (38) to choose an operating mode, contactor, remote-operate switch and ON-OFF of the electrical apparatus, comprising several setting contact studs (CT, TL, ON-OFF) inserted electrically between the output of the logic circuit (36) and the input of the monostable flip-flop (34),
- said logic circuit (36) comprising a first sub-unit (SE1) of combinative elements designed to deliver by means of position (CT) in the "contactor" operating mode, an output signal (S1) to the monostable flip-flop (34), when the first auxiliary contact (BP1) of the control means (K) is closed, while the position detector (40) indicates simultaneously an opening of the movable contact (12) of electrical apparatus (10) and vice-versa, when the first auxiliary contact (BP1) is open while the position detector (40) indicates a closing of the movable contact (12).
2. Control device according to claim 1, characterized in that the first auxiliary contact (BP1) of the control means (K) of the logic circuit (36) belongs to a first push-button and is used to generate a first common input signal (E1) corresponding to contactor, remote operate switch and closing ON functions, and that a second auxiliary contact (BP2) of the control means (K) belonging to a second push-button is used to deliver a second input signal (E2) for opening OFF control, the detector (40) delivering the third input signal (E3) indicating by means of a transmission device (50) the position of movable contact (12) of electrical apparatus (10).
3. Control device according to claim 2, characterized by the fact that the first sub-unit (SE1) of combinative elements is sensitive to the first and third input signal (E1 and E3) in order to supply the first position (CT) of selector (38) with said output signal (81) defined by the relationship (Ei . E3 + E1 . E3) corresponding to the "contactor" operating mode.
4. Control device according to claim 2 or 3, characterized by the fact that the logic circuit (36) comprises a second sub-unit (SE2) of combinative elements with three input variables (E1, E2, E3) and designed to supply the ON-OFF position of selector (38) with an output signal (S3) defined by the relationship (E2 . E3 + E1 . E3) corresponding to the opening-closing ON-OFF operating mode.
5. Control device according to claim 2, 3 or 4, characterized by the fact that the position (TL) of selector (38) cooperates directly with the first auxiliary contact (BP1) each actuating of which generating the emission of a control order at output (S2) of logic circuit (36) in the "remote-operate" operating mode.
EP83402226A 1982-11-29 1983-11-18 Electronic control circuit for a multi-mode apparatus comprising a mechanism with an electromagnet Expired EP0112740B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83402226T ATE43455T1 (en) 1982-11-29 1983-11-18 ELECTRONIC DRIVER CIRCUIT FOR DEVICES WITH SEVERAL MODES AND EQUIPPED WITH AN ELECTROMAGNETIC DRIVE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8220111 1982-11-29
FR8220111A FR2536904B1 (en) 1982-11-29 1982-11-29 ELECTRONIC CONTROL CIRCUIT FOR A MULTI-OPERATION APPARATUS EQUIPPED WITH AN ELECTROMAGNET MECHANISM

Publications (2)

Publication Number Publication Date
EP0112740A1 EP0112740A1 (en) 1984-07-04
EP0112740B1 true EP0112740B1 (en) 1989-05-24

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EP83402226A Expired EP0112740B1 (en) 1982-11-29 1983-11-18 Electronic control circuit for a multi-mode apparatus comprising a mechanism with an electromagnet

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US (1) US4578734A (en)
EP (1) EP0112740B1 (en)
JP (1) JPS59150408A (en)
AT (1) ATE43455T1 (en)
AU (1) AU558521B2 (en)
CA (1) CA1210124A (en)
DE (1) DE3379924D1 (en)
ES (1) ES527480A0 (en)
FR (1) FR2536904B1 (en)
ZA (1) ZA838697B (en)

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Also Published As

Publication number Publication date
AU558521B2 (en) 1987-01-29
ES8407240A1 (en) 1984-09-01
ATE43455T1 (en) 1989-06-15
US4578734A (en) 1986-03-25
FR2536904A1 (en) 1984-06-01
CA1210124A (en) 1986-08-19
FR2536904B1 (en) 1985-11-08
DE3379924D1 (en) 1989-06-29
AU2176683A (en) 1984-06-07
JPS59150408A (en) 1984-08-28
ZA838697B (en) 1984-09-26
ES527480A0 (en) 1984-09-01
EP0112740A1 (en) 1984-07-04
JPH0418685B2 (en) 1992-03-27

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