[go: up one dir, main page]

WO2023194251A1 - Détection d'un état commuté d'un élément de commutation - Google Patents

Détection d'un état commuté d'un élément de commutation Download PDF

Info

Publication number
WO2023194251A1
WO2023194251A1 PCT/EP2023/058533 EP2023058533W WO2023194251A1 WO 2023194251 A1 WO2023194251 A1 WO 2023194251A1 EP 2023058533 W EP2023058533 W EP 2023058533W WO 2023194251 A1 WO2023194251 A1 WO 2023194251A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching element
switching
supply path
power supply
circuit
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.)
Ceased
Application number
PCT/EP2023/058533
Other languages
German (de)
English (en)
Inventor
Markus Rohs
Felix Franke
Fabio UCEDA PERONA
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Priority to EP23716502.2A priority Critical patent/EP4505499A1/fr
Publication of WO2023194251A1 publication Critical patent/WO2023194251A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
    • 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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication

Definitions

  • the invention relates to a circuit arrangement and a method for detecting a switching state of a switching element, in particular within a power supply path.
  • Switching elements within the scope of the invention are known to be used to establish or separate an electrically conductive connection between two electrically conductive connections or contacts by means of a switching path running between them, depending on the switching state.
  • Switching elements can conventionally be set up as a normal on/off switch, as an opener, closer or changeover switch.
  • a normal on/off switch only requires the action of an external force or control for the switching itself, ie for establishing or separating an electrically conductive connection between the two electrically conductive connections or contacts.
  • Openers and closers are defined by their respective rest position and working position. When the opener is in the rest position, it is in its closing switching state (in English "normally closed” - "NC"), i.e.
  • the electrically conductive connection is established between the two connections or contacts, and it must be in the interrupting switching state, i.e. to Opening the electrically conductive connection between the connections or contacts, correspondingly permanently applied to force, ie controlled.
  • the normally open contact on the other hand, is in its rest position in its interrupting switching state (in English “normally open” - “NO”), i.e. the electrically conductive connection between the two connections or contacts is separated and must be in the closing switching state in order to assume That is, in order to close the electrically conductive connection between the connections or contacts, a corresponding permanent force is applied, ie controlled.
  • the closing switching state of a closer is therefore its working position.
  • a changeover switch also referred to as a changeover switch or changeover or changeover contact, has at least one additional third connection in addition to the two connections or contacts described above, so that one electrically conductive connection is opened and another is closed at the same time.
  • a changeover switch creates an electrically conductive connection between two connections or contacts in every position. One of the connections or contacts is connected as a common middle connection (in English “common” - “COM”) either to one further contact or to another further contact when switching.
  • Openers and closers normally switch in a monostable manner without any special precautions, i.e. only one of two or more possible states is stable (rest position).
  • the other state (working position) is only maintained as long as an external force acts on it, preventing it from returning to its rest position.
  • the return of a monostable switching element to the idle state can also be delayed by a time constant.
  • a changeover switch on the other hand, can be designed as a monostable switching element or as a stable switching element in which the action of the external force is only required for the switching itself. If the third or any additional connection is not used in the latter case, the changeover switch can also be used as a normal on/off switch.
  • Monostable switching elements can be designed, for example, as push-button switches, i.e. as switches that are actuated by pressing and return to the starting position automatically after being released, often using a mechanical spring.
  • Contactors and relays can be mentioned as further examples, whereby contactors are conventionally referred to as electrically or electromagnetically operated switches for high electrical powers, and relays are remote-controlled switches operated by electrical current, usually with two switching positions, which are activated via a control circuit and others can switch circuits.
  • relays can also have changeover contacts (changeover switches).
  • Switching elements can also be positively guided, in which case a normally closed contact and a normally open contact are mechanically connected to one another in such a way that the normally open contact and the normally closed contact can never be closed together. That means e.g. B. that a normally closed contact that is welded due to overloading, i.e. that does not open when the coil is de-energized, means that an opener does not close. In this case, an opener can also be used to diagnose or monitor the condition of the closer.
  • force-guided switching elements an ideal standard component in safety-critical applications, in particular, for example, the ideal basic component of a safety switching device. With an integrated diagnosis, such diagnosis or monitoring can also take place during operation.
  • Examples include EP 1 869687 B1 and EP 3 575 900 B1.
  • EP 1 869687 B1 in a safety switching device for safely switching off an electrical consumer with at least one input for connecting a signaling device, it is provided to control a switching element with an evaluation and control unit in order to interrupt a power supply path to the consumer.
  • the evaluation and control unit is further designed to carry out functional tests at defined times in order to check a switching function of the switching element, the input for connecting the signaling device also being designed as an input for supplying a supply voltage that is required for the operation of the switching element.
  • an intelligent safety relay is provided with two processing chips, each a plurality of terminals for controlling the safety relay to remain in an output standby state after receiving a scanning signal, and two relay coils each having a normally closed contact, each of which is connected to a diagnostic signal generating circuit, each having a normally open contact, each of which is connected to a relay output end, and each have a common contact, both common contacts being connected to each other and to a common diagnostic signal detection circuit, each relay coil being controlled by a logic circuit to be switched on or off, so that the respective common contact is electrical is connected to the corresponding normally open or normally closed contact; wherein the electrical connections between each common contact and corresponding normally open contact interconnect the relay output ends.
  • NC “normally closed”, normally closed contacts
  • a test signal supplied to the changeover relay via the NC contacts can be read back or not, with each switching element of each changeover switch of the changeover relay being activated one after the other.
  • the later evaluation can then be carried out by a microcontroller.
  • the NC path of a changeover relay is used for contact monitoring and a microcontroller is used for control and evaluation.
  • DE 10 2010 060 323 A1 also shows a switching arrangement for monitoring the function of a safety circuit, the switching arrangement exclusively having relays with non-positively guided contacts and a monitoring unit in the form of a microcontroller.
  • US 9,989,594 B2 on the other hand, describes a monitoring circuit for monitoring the circuit state of an electrical switching contact, which has a monitoring unit and a transformer, the secondary windings of the transformer forming a monitoring circuit together with the switching contact.
  • one object of the invention is to implement a new solution for monitoring the switching state of switching elements, which in particular uses discrete components, ie individual electrical circuit elements that can be arranged in their own housing and have their own external connections and can be implemented with just one functional unit instead of integrated circuits (IC), which combine several electronic components in one housing.
  • the invention is intended to enable such monitoring even with switching elements that are not positively guided, preferably simple make contacts, and this should also be suitable for use in safety-critical applications, in particular in safety-related switching devices.
  • load monitoring can be used.
  • the invention proposes a method for detecting a switching state of a switching element within a power supply path, in which a switching element, which is arranged between two connection ends of a power supply path and has two connections, each of which is electrically connected to a connection end of the power supply path, can be controlled or is, namely to selectively assume a first switching state in which a switching path running between the two connections is closed to close the power supply path between the two connection ends, or to assume a second switching state in which the switching path running between the two connections is closed Interrupting the power supply path is open.
  • the switching element can thus cause a resistance value between these two connection ends, which is either high-resistance or low-resistance depending on the switching state.
  • a voltage present between the two connection ends on the switching element is then tapped and an output signal corresponding to the tapped voltage is output, which is finally evaluated in relation to the current switching state assumed.
  • the method therefore offers the advantage that, in principle, a substantially comprehensive detection of the respective switching state can also be guaranteed for non-forcibly guided switching elements and thus also their functionality can be tested. Since there is generally a higher voltage signal and therefore also a corresponding output signal in the open switching state than in the unopened switching state, it can also be easily checked when using a normally open contact whether in its switched off state, i.e. in its NO status, The “NO path” to be formed between the two connections is actually high-resistance.
  • the auxiliary voltage also makes it possible to carry out a variety of tests, which makes the method ideal for use in safety-critical applications, especially in safety-related switching devices.
  • the method also has a further step of selectively opening or disconnecting the auxiliary circuit in series with the switching element and then evaluating the output signal corresponding to the tapped voltage with respect to a level change.
  • the primary side of an optocoupler In order to selectively open or close the auxiliary circuit, the primary side of an optocoupler, the secondary side of which is arranged in series with the switching element as part of the auxiliary circuit, can therefore be controlled by a logic device and the output signal corresponding to the tapped voltage can then be evaluated by the logic device in relation to a level change become. Depending on the evaluation, it is therefore provided according to the invention to check the switching element to be checked for functionality or an error. As a result, a functioning switching element or an error can be detected.
  • a circuit arrangement for detecting a switching state of a switching element within a power supply path is also provided, with which in particular the method shown above can also be expediently implemented.
  • the circuit arrangement here comprises the switching element and the power supply path, wherein the power supply path, in particular for the load power supply, is arranged between two potential terminals, and the switching element has two connections and is arranged in the power supply path between two connection ends of the power supply path, each of the connections being respectively with one of the connection ends is electrically connected.
  • the switching element is also set up to assume, in particular by control by means of a voltage to be supplied from outside the circuit arrangement, an optionally either closing or interrupting switching state, wherein in the closing switching state a switching path running between the two connections is closed for closing the power supply path between the connection ends and in interrupting switching state, the switching path running between the two connections is opened for interrupting the power supply path between the connection ends.
  • the circuit arrangement is further characterized by a diagnostic circuit, which comprises an auxiliary circuit formed with the inclusion of the power supply path running at least between the connection ends with a switching element arranged therebetween, wherein the diagnostic circuit is at least set up to supply the auxiliary circuit with an auxiliary voltage, to tap a voltage present between the two connection ends on the switching element, to output an output signal corresponding to the tapped voltage and to evaluate the output signal in relation to the current switching state.
  • a diagnostic circuit which comprises an auxiliary circuit formed with the inclusion of the power supply path running at least between the connection ends with a switching element arranged therebetween, wherein the diagnostic circuit is at least set up to supply the auxiliary circuit with an auxiliary voltage, to tap a voltage present between the two connection ends on the switching element, to output an output signal corresponding to the tapped voltage and to evaluate the output signal in relation to the current switching state.
  • the circuit arrangement also offers the advantage that it can in principle be constructed with discrete components.
  • the auxiliary circuit of the diagnostic circuit further includes a resistor arranged in series with the switching element, in particular a resistor whose resistance value is many times lower than a resistance value caused by the switching element in the interrupting switching state between the two connections.
  • the detection and in particular an associated test can also be carried out in the simplest way in the closed switching state, since in such a diagnostic case the auxiliary voltage can also drop across this resistor.
  • a desired or required level difference between the voltage signals in the open and unopened switching states can also be influenced in a simple manner using such a resistor.
  • the diagnostic circuit for outputting the output signal corresponding to the tapped voltage contains an operational amplifier, in particular an operational amplifier used as a differential amplifier, with a non-inverting and an inverting input, each of the inputs having one of the is electrically connected to both connection ends.
  • each of the inputs of the operational amplifier is electrically connected to the respective connection end via a resistor.
  • the diagnostic circuit expediently contains a logic device which is connected in a galvanically decoupled manner to provide the auxiliary voltage for supplying the auxiliary circuit and for evaluating the corresponding output signal.
  • a first optocoupler and a transformer for providing the electrical auxiliary potential can preferably be included.
  • the diagnostic circuit can further comprise a second optocoupler, its primary side can be controlled by the logic device and its secondary side is arranged in series with the switching element as part of the auxiliary circuit.
  • the auxiliary voltage can be activated and switched off extremely flexibly, and a corresponding dynamization of the evaluation signal can be provoked dynamically and depending on the diagnosis to be carried out.
  • Fig. 1 shows a simplified circuit diagram of a preferred embodiment of a circuit arrangement according to the invention
  • FIG. 2 shows two exemplary signal curves for evaluation in relation to a recorded signal; as shown in FIG. 1.
  • FIG. 1 Shown in FIG. 1 is a simplified circuit diagram of a circuit arrangement according to the invention for detecting a switching state of a switching element SW3 within a power supply path.
  • the circuit arrangement includes the switching element SW3 and the power supply path, which is arranged between two potential terminals 13, 14, as shown.
  • the power supply path can therefore be provided in particular for supplying load current, so that, for example, a working voltage is or can be applied to the potential terminal 14 and one or more consumers are or can be connected to the potential terminal 13.
  • a working voltage is or can be applied to the potential terminal 14 and one or more consumers are or can be connected to the potential terminal 13.
  • consumers are not shown in the figure for reasons of clarity.
  • the circuit arrangement is shown in FIG ', 12' is electrically connected.
  • the switching element SW3 is preferably designed as a shooter, but can alternatively also be designed as an opener or changeover switch.
  • the switching element SW3 can be controlled in a manner known per se. In particular, however, the control can be in Scope of the invention by means of a voltage to be supplied from outside the circuit arrangement. Take place. Since the type of control and/or a control circuit provided for this purpose is not the subject of the invention, the control of the in FIG. 1 is not shown for reasons of clarity.
  • the switching element SW3 is thus set up to assume either a closing or interrupting switching state, wherein in the closing switching state a switching path running between the two connections 11, 12 is closed for closing the power supply path between the connection ends 11 ', 12' and in the interrupting switching state the between The switching path running between the two connections 11, 12 is opened to interrupt the power supply path between the connection ends 1T, 12'. This can therefore be done in a manner known per se.
  • the circuit arrangement has a diagnostic circuit, which includes an auxiliary circuit formed by including the power supply path running at least between the connection ends 1T, 12' with a switching element SW3 arranged therebetween, and the diagnostic circuit for supplying the auxiliary circuit with an auxiliary voltage for tapping a voltage applied between the two connection ends 1 T, 12 'on the switching element SW3, is set up to output an output signal corresponding to the tapped voltage and to evaluate the output signal AS in relation to the current switching state.
  • the diagnostic circuit is therefore particularly independent of the control.
  • this circuit arrangement i.e. in particular by means of the diagnostic circuit, can be used to check whether the “NO path” formed via the switching path between the connections 11, 12 or the connection ends 1 is in the switched off state of the switching element T, 12 'is high impedance and the power supply path is therefore interrupted.
  • the switching element SW3 thus causes a resistance value between these two connection ends 11 ', 12', which is either high-resistance or low-resistance depending on the switching state.
  • the power supply path that runs at least between the connection ends 1 T, 12 ' is now included auxiliary circuit formed between the switching element SW3 is supplied with an auxiliary voltage and the voltage present between the two connection ends 1 T, 12 'on the switching element SW3 is tapped, the output signal AS corresponding to the tapped voltage can consequently be evaluated in relation to the current switching state assumed and thus the switching state of the switching element SW3 can be detected within the power supply path.
  • Fig. 2 shows an example of a roughly sketched course of a stimulus signal generated to check the diagnostic circuit and the course of a corresponding output signal AS (Diag. -Input) received for evaluation in the case of a switching element SW3 as shown in Fig. 1 , i.e. open state. If no stimuli signal is applied (stimuli to OFF), the corresponding output signal AS is also at zero or almost at zero (diag. input at OFF). If the stimulus signal is switched on and the switching element SW3 is open and therefore has a high impedance (stimuli on ON), a corresponding output signal AS is also present (diag. input on ON). By means of such a stimulus signal, a corresponding dynamization of the evaluation signal can be provoked.
  • the auxiliary circuit of the diagnostic circuit is preferably constructed, as shown in FIG resistance value caused by both connections 11, 12.
  • a series connection of resistor R7 and the high-resistance switching contact SW3 can be formed using the diagnostic circuit, so that the check whether the switching path is in the open state, that is, according to FIG. 1 in particular the "NO path" in the switched off state of the Switching element, is high-resistance.
  • a corresponding voltage applied to the switching element SW3 can therefore also be tapped.
  • the switching state of the switching element SW3 can be detected within the power supply path.
  • an operational amplifier A3 in particular an operational amplifier used as a differential amplifier, with a non-inverting and an inverting input can preferably be part of the diagnostic circuit, as shown in FIG. 1, each of the inputs, in particular each is electrically connected to one of the two connection ends 1 T, 12 'via a resistor R8, R9.
  • a decoupling in particular a high-resistance decoupling, can therefore be effected via the resistors R8, R9 and, as will be seen below, are also relevant for error exclusion when carrying out various functional tests.
  • the resistors R8, R9 should therefore preferably be in the range of 1 MOhm or even larger.
  • the switching state of the switching element SW3, in particular also in the case of a non-forcibly guided switching element can be detected within the power supply path.
  • the switching element to be checked can also be checked for functionality or an error.
  • the invention is therefore particularly suitable for use in safety-critical applications, in particular in safety-related switching devices.
  • a galvanically decoupled logic device in particular can be part of the diagnostic circuit.
  • the diagnostic circuit can also include optocouplers, 1 with OC3, whose primary side can be controlled by the logic device logic, and whose secondary side is arranged as part of the auxiliary circuit in series with the switching element SW3.
  • optocoupler OC3 By means of the optocoupler OC3, a malfunction of the operational amplifier A3 can also be detected, for example by switching off the auxiliary voltage (eg as shown in FIG. 2) in the direction of the switching element SW3, by provoking a change in state at its inputs.
  • This type of dynamization of the evaluation signal can in particular also be used to exclude or detect a stuck-at error (in particular a malfunction of the operational amplifier A3) in the diagnostic chain.
  • the primary side of the optocoupler OC3 is preferably controlled by the logic device logic and the output signal corresponding to the tapped voltage is also evaluated by the logic device logic in relation to a level change.
  • auxiliary circuit of the diagnostic circuit is supplied with an auxiliary voltage via the transformer T3 and the circuit part U3, this auxiliary voltage being independent of potentials connected to the potential terminals 13, 14 and only serving the diagnostic circuit for its function .
  • MELF resistors For the resistors R7, R8, R9, so-called MELF resistors (“MELF” - Metal Electrode Leadless Faces) are used in a particularly practical design.
  • MELF (particularly mini/micro-MELF) resistors are known to offer the advantage that specific parameters such as pulse load capacity, temperature stability, long-term stability and dielectric strength as well as precisely specified behavior in the event of a fault (fuse resistance) are better achieved.
  • MELF resistors With MELF resistors, a short circuit of the component in the event of a fault can essentially be ruled out.
  • an operational amplifier is used as a differential amplifier A3.
  • the shutdown is preferably implemented with the optocoupler OC3, e.g. an opto-FET, which is controlled via the logic device logic.
  • the detection of the switching state of the switching element SW3, in particular including the associated diagnosis of the switching contact SW3, can then expediently always take place according to the same procedure.
  • the diagnosis of the switching element SW3 is preferably carried out in the open state of the switching element SW3, i.e. with a make contact shown in FIG. 1, in the non-controlled state.
  • the closer creates a high-resistance resistance between the two connections 11 and 12 or between the connection ends 11 'and 12' of the power supply path.
  • the auxiliary voltage is activated by the logic device logic, galvanically isolated by OC3, and is now applied to the series circuit formed by this consisting of the resistor R7 and the high-resistance switching contact SW3.
  • the resistance value of the resistor R7 is expediently many times lower than the resistance value caused by the switching element SW3 in the interrupting switching state, ie Rsw3_open » R7.
  • the operational amplifier A3 can measure the auxiliary voltage across the switching contact SW3 and produce a corresponding output. output signal and for evaluation. If almost the entire auxiliary voltage can be measured via the switching element SW3, then the switching element SW3 has a high resistance, i.e. open.
  • the corresponding output signal AS output at the output of the differential amplifier A3 consequently assumes a high signal level, i.e. HIGH level.
  • the output signal AS is then expediently passed on by the optocouplerOC4 to the logic device logic for evaluation there.
  • the optocoupler OC3 is preferably switched off by the logic device logic, whereby no auxiliary voltage can be measured at the switching element SW3.
  • An output signal AS with a lower signal level, i.e. a LOW level, is therefore produced at the output of the operational amplifier A3, which in turn is then transferred to the logic device logic via the optocoupler OC4.
  • the switching contact is open and, in this example case, has also assumed a safe state.
  • any voltage measured by the operational amplifier A3 would permanently lead to a low output signal AS, i.e. permanently to a signal with a LOW level. Since this signal contradicts the pattern expected by the logic, i.e. there is no correspondingly provoked dynamization of the evaluation signal, an error reaction can be triggered.
  • the switching element SW3 is “broken”, i.e. permanently in the open state, and therefore the resulting resistance value is permanently high-resistance regardless of the respective control. In order to diagnose this error, the diagnosis would have to be carried out when the switching element SW3 is activated to assume the closing switching state. If an output signal AS with a high signal level, i.e. a HIGH level, were to occur at the output of the operational amplifier A3 when the auxiliary voltage was applied, it can be assumed that the switching element SW3 does not react as expected. If the auxiliary voltage is measured at the switching element SW3 in the case of a switching element SW3 designed as a normally open contact, it can be assumed that the normally open contact is not closed, contrary to expectations. However, for a stop category 0 device (Safe State OFF), this is the safe state. Nevertheless, an error reaction/error feedback can be triggered.
  • a short circuit is essentially impossible with a MELF design.
  • An increase, e.g. doubling, of the resistance value of R7 has no negative effects, at least as long as the resistance value caused by the switching element SW3 in the interrupting switching state is many times greater than the resistance value of R7, i.e. Rsw3_open » R7.
  • a short circuit is essentially impossible with a MELF design.
  • one or both resistance values generally has no negative effects.
  • the optocoupler OC3 is permanently high-resistance, ie open, no auxiliary voltage can be measured by the operational amplifier A3 on the switching element SW3. This means that an expected output pattern is incorrect. This can also be recognized, in particular by the logic device, and lead to an error reaction being triggered. With regard to the optocoupler OC4, the following errors and their effects can be considered in particular.
  • the optocoupler OC4 is permanently conductive, the output signal of the operational amplifier A3 is permanently recognized as a HIGH signal, which in turn causes an expected output pattern to be incorrect. The existence of such an error can therefore also be detected and can subsequently trigger an error response.
  • the optocoupler OC4 is permanently high impedance, i.e. open, the output signal of the operational amplifier A3 is permanently recognized as a LOW signal, which in turn means that an expected output pattern is incorrect. The existence of such an error can therefore also be detected and can subsequently trigger an error response.
  • the procedure according to the invention and the circuit arrangement according to the invention are therefore also highly suitable for the use of more cost-effective and less complex non-forcibly guided switching elements, ie in particular for contact monitoring of a non-forcibly guided relay, in safety-related applications and, when used appropriately, a variety of diagnostic measures can be used to prevent safe failure -Faction (SFF) can be increased and the hardware fault tolerance (HFT) that needs to be implemented can also be reduced.
  • SFF safe failure -Faction
  • HFT hardware fault tolerance

Landscapes

  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

L'invention concerne un ensemble circuit et un procédé de détection d'un état commuté d'Un élément de commutation (SW3) dans un trajet d'alimentation en courant. L'élément de commutation (SW3) présente deux connexions (11, 12), est disposé dans le trajet d'alimentation en courant entre deux extrémités de connexion (11', 12') du trajet d'alimentation en courant, les connexions (11, 12) étant électriquement connectées à chacune des extrémités de connexion (11', 12'), et est conçu pour adopter sélectivement un état commuté de fermeture ou d'interruption. Dans l'état commuté de fermeture, un trajet de commutation s'étendant entre les deux connexions (11, 12) est fermé afin de fermer le trajet d'alimentation en courant entre les extrémités de connexion (11', 12'), et dans l'état commuté d'interruption du trajet de commutation s'étendant entre les deux connexions (11, 12), est ouvert pour interrompre le trajet d'alimentation en courant entre les extrémités de connexion (11',12'). Un circuit de diagnostic comprend un circuit auxiliaire conçu de manière à incorporer le trajet d'alimentation en courant s'étendant au moins entre les extrémités de connexion (11', 12') avec l'élément de commutation (SW3) disposé entre elles, et est conçu pour alimenter le circuit auxiliaire avec une tension auxiliaire, pour détecter une tension appliquée entre les deux extrémités de connexion (11', 12') au niveau de l'élément de commutation (SW3), pour délivrer en sortie un signal de sortie correspondant à la tension détectée, et pour évaluer le signal de sortie par rapport à l'état commuté présent.
PCT/EP2023/058533 2022-04-07 2023-03-31 Détection d'un état commuté d'un élément de commutation Ceased WO2023194251A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23716502.2A EP4505499A1 (fr) 2022-04-07 2023-03-31 Détection d'un état commuté d'un élément de commutation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEDE102022108473.6 2022-04-07
DE102022108473.6A DE102022108473A1 (de) 2022-04-07 2022-04-07 Erfassung eines Schaltzustandes eines Schaltelementes

Publications (1)

Publication Number Publication Date
WO2023194251A1 true WO2023194251A1 (fr) 2023-10-12

Family

ID=85985027

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/058533 Ceased WO2023194251A1 (fr) 2022-04-07 2023-03-31 Détection d'un état commuté d'un élément de commutation

Country Status (3)

Country Link
EP (1) EP4505499A1 (fr)
DE (1) DE102022108473A1 (fr)
WO (1) WO2023194251A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1869687B1 (fr) 2005-03-22 2010-11-10 Pilz GmbH & Co. KG Dispositif de coupure de securite servant a deconnecter un recepteur electrique de maniere sure
DE102010060323A1 (de) 2010-11-03 2012-05-03 Elobau Gmbh & Co. Kg Schaltanordnung zur Überwachung der Funktion einer Sicherheitsschaltung
US8692420B2 (en) * 2007-07-12 2014-04-08 Phoenix Contact Gmbh & Co. Kg Safety device for multichannel controlling of a safety-related unit
US9989594B2 (en) 2013-06-21 2018-06-05 Wago Verwaltungesellschaft Mbh Monitoring circuit for detecting a switching state of an electrical switching contact and method therefor
EP3367411A1 (fr) * 2017-02-23 2018-08-29 Contemporary Amperex Technology Co., Limited Circuit de diagnostic de relais
US20200096571A1 (en) * 2018-09-21 2020-03-26 Denso Wave Incorporated Relay fault diagnosis device
EP3742466A1 (fr) * 2019-05-24 2020-11-25 Wieland Electric GmbH Ensemble de circuit permettant de commuter de manière sécurisée un consommateur électrique selon une mesure de sécurité
EP3575900B1 (fr) 2017-12-27 2021-03-10 Shanghai Chenzhu Instrument Co., Ltd. Relais de sécurité intelligent et circuit appliqué par celui-ci

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1869687B1 (fr) 2005-03-22 2010-11-10 Pilz GmbH & Co. KG Dispositif de coupure de securite servant a deconnecter un recepteur electrique de maniere sure
US8692420B2 (en) * 2007-07-12 2014-04-08 Phoenix Contact Gmbh & Co. Kg Safety device for multichannel controlling of a safety-related unit
DE102010060323A1 (de) 2010-11-03 2012-05-03 Elobau Gmbh & Co. Kg Schaltanordnung zur Überwachung der Funktion einer Sicherheitsschaltung
US9989594B2 (en) 2013-06-21 2018-06-05 Wago Verwaltungesellschaft Mbh Monitoring circuit for detecting a switching state of an electrical switching contact and method therefor
EP3367411A1 (fr) * 2017-02-23 2018-08-29 Contemporary Amperex Technology Co., Limited Circuit de diagnostic de relais
EP3575900B1 (fr) 2017-12-27 2021-03-10 Shanghai Chenzhu Instrument Co., Ltd. Relais de sécurité intelligent et circuit appliqué par celui-ci
US20200096571A1 (en) * 2018-09-21 2020-03-26 Denso Wave Incorporated Relay fault diagnosis device
EP3742466A1 (fr) * 2019-05-24 2020-11-25 Wieland Electric GmbH Ensemble de circuit permettant de commuter de manière sécurisée un consommateur électrique selon une mesure de sécurité

Also Published As

Publication number Publication date
EP4505499A1 (fr) 2025-02-12
DE102022108473A1 (de) 2023-10-12

Similar Documents

Publication Publication Date Title
DE69601218T3 (de) Elektrische differentialschutzvorrichtung mit prüfkreis
EP2980659B1 (fr) Dispositif et procédé destinés à la surveillance et la commutation d'un circuit de charge
EP2519960A1 (fr) Dispositif de contrôle de circuit électrique, dispositif de commutation pour l'alimentation d'un récepteur et procédé permettant de faire fonctionner un dispositif de commutation
EP1254400B1 (fr) Circuit pour l'arret sur d'une installation, en particulier d'une machine
DE102005055325C5 (de) Sicherheitsschaltvorrichtung zum fehlersicheren Abschalten eines elektrischen Verbrauchers
EP2089892A1 (fr) Dispositif à commutateur de sécurité
DE10146753C1 (de) Sicherheitsschaltvorrichtung zum sicheren Abschalten eines elektrischen Verbrauchers
WO2006099935A1 (fr) Dispositif de coupure de securite servant a deconnecter un recepteur electrique de maniere sure
EP2546852B1 (fr) Relais de sécurité bistable
EP1088318B1 (fr) Dispositif de deconnexion fiable d'une charge electrique, notamment a forte inductivite, d'un systeme d'alimentation en tension continue electrique
EP0660043B1 (fr) Dispositif de commande pour commander des appareils de commutation selon un programme de temps
WO2023194251A1 (fr) Détection d'un état commuté d'un élément de commutation
EP1594021A1 (fr) Dispositif de circuit et procédé de test de contacts de commutation d'un circuit numérique de sortie
EP0730348B1 (fr) Montage pour la mise en circuit et hors circuit d'une charge électrique
WO1999027552A1 (fr) Circuit de surveillance d'un commutateur a courant alternatif
EP0730350B1 (fr) Montage pour la mise en circuit et hors circuit d'une charge électrique
DE102004033359A1 (de) Vorrichtung zum fehlersicheren Abschalten eines elektrischen Verbrauchers, insbesondere einer elektrisch angetriebenen Maschine
DE60009752T2 (de) Verbesserte elektronische fehlerstromschutzvorrichtung
DE19508841A1 (de) Sicherheitsschalteranordnung
BE1029028B1 (de) Manuell rückstellbare Schaltvorrichtung
EP4607799A1 (fr) Appareil de commutation de sécurité pour la coupure protégée contre les erreurs d'un consommateur externe
DE69820837T2 (de) Statischer Endschalter zur Betätigung eines Leistungsschalters
DE102023106235A1 (de) Funktional sicherer Freigabepfad
DE102022122527A1 (de) Relaisvorrichtung und Sicherheitsschaltgerät mit mindestens einer Relaisvorrichtung
EP1093645A1 (fr) Dispositif de detection fonctionnant au moyen d'un bus et procede de controle correspondant

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23716502

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023716502

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2023716502

Country of ref document: EP

Effective date: 20241107