EP4278371A1 - Manuell rückstellbare schaltvorrichtung - Google Patents
Manuell rückstellbare schaltvorrichtungInfo
- Publication number
- EP4278371A1 EP4278371A1 EP22702166.4A EP22702166A EP4278371A1 EP 4278371 A1 EP4278371 A1 EP 4278371A1 EP 22702166 A EP22702166 A EP 22702166A EP 4278371 A1 EP4278371 A1 EP 4278371A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- relay
- switching device
- designed
- evaluation device
- 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.)
- Pending
Links
- 238000011156 evaluation Methods 0.000 claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000004044 response Effects 0.000 claims abstract description 19
- 239000004065 semiconductor Substances 0.000 claims description 37
- 238000005259 measurement Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000002950 deficient Effects 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000012369 In process control Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000010965 in-process control Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- H01H47/02—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
- H01H47/16—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 for conjoint, e.g. additive, operation of the relay
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/021—Bases; Casings; Covers structurally combining a relay and an electronic component, e.g. varistor, RC circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/047—Details concerning mounting a relays
- H01H50/048—Plug-in mounting or sockets
Definitions
- the invention relates to a manually resettable switching device which can be used, for example, in process control systems in the field of automation technology.
- Electronic devices that are used in process control systems must be able to be reset to their normal operating state by an acknowledgment after they have been switched off as a result of a detected error.
- An acknowledgment or resetting of an electronic device after an error has occurred can, for example, be via a switch or button implemented on the device, via a separate reset input or, if the electronic device is connected to a bus system, via a software command, which is issued, for example, by a higher-level controller (e.g. a PLC) is generated.
- a higher-level controller e.g. a PLC
- the invention is now based on the object of creating a manually resettable switching device which can be reset to its normal operation quickly and easily after it has been switched off due to a fault, even if the switching device does not have a separate reset input or a reset switch.
- a manually resettable switching device which can be reset to its normal operation quickly and easily after it has been switched off due to a fault, even if the switching device does not have a separate reset input or a reset switch.
- a core idea of the invention can be seen in equipping a switching device with a manual resetting mechanism, which can be implemented, for example, by means of a relay that can be pulled out and reinserted, as well as a circuit.
- the circuit is used in particular to remove and reinsert of the relay and to reset the switching device to a normal operating state simply by pulling and reinserting the relay after an error-related switch-off.
- the relay performs a double function here: on the one hand, it acts as a switching device for opening and closing at least one current path of the switching device and, on the other hand, it forms part of the reset mechanism.
- Figure 1 shows an exemplary manually resettable switching device
- FIG. 2 shows a housing, in particular a mounting rail housing, in which the switching device is at least partially arranged.
- FIG. 1 shows an example of a manually resettable switching device 10, which can be single-phase or multi-phase, in order to be able to connect or disconnect an electrical consumer (not shown) that can be connected on the output side to a supply energy that can be applied on the input side.
- Switching device 10 which is only shown as an example and explained below, is designed as a single-phase switching device that can be controlled, for example, in a first or second operating state.
- the first operating state can represent normal, fault-free operation, while the second operating state can represent, for example, the switch-off mode triggered as a result of a fault.
- the switching device 10 has, for example, a ground connection 22 and an input connection 20 to which an input voltage can be applied.
- a power supply device 5 can be connected to the input terminal 20 and the ground terminal 22 .
- the energy supply device 5 can supply a DC voltage of 24 V am Provide input port 20.
- the input port 20 may be connected via a current path 110 to an output port 21, which may function as a fused output port. If the switching device 10 had a multi-phase design, a number of input connections, a number of current paths and a number of output connections would be implemented.
- the switching device 10 can also include a manually pluggable relay 40 which has a coil 42 and a switching element 41 .
- the switching element 41 is preferably implemented as a closer. However, it could also be designed as a changeover switch.
- the exemplary relay 40 has two coil connections 43 and 44 and two switching element connections 45 and 46 .
- the switching element 41 is switched into the current path 110 .
- two connection contacts 62 and 63 are provided in the current path 110, which are electrically connected to the switching element connections 45 and 46 of the relay 40 when the relay 40 is in the plugged-in state.
- the switching device 10 has two further connection contacts 60 and 61 which are electrically connected to the two coil connections 43 and 44 of the relay coil 42 when the relay 40 is in the plugged-in state.
- the connection contact 60 is electrically connected to the input connection 20 . Consequently, when the relay 40 is plugged in, the exemplary DC voltage of 24V is also present at the coil connection 43 .
- the connection contacts 60 to 63 are also shown in FIG. 2 in connection with an exemplary housing 130 of the switching device 10 .
- the coil connection 44 of the coil 42 can be connected to ground via the connection contact 61 , for example via a first semiconductor switch 80 which can be controlled by a control and evaluation device 100 . Ground is shown as ground terminal 22 .
- the semiconductor switch 80 can be in the form of a field effect transistor or a bipolar transistor, for example.
- the semiconductor switch 80 is an npn transistor, which has a base connection 82, a collector connection 81 electrically connected to the connection contact 61 and an emitter connection 83 connected to the ground connection 22.
- the base connection 82 can have a voltage divider, which has, for example, two series-connected electrical resistors 90 and 91, with an output 101 of the Control and evaluation device 100 may be connected.
- the base connection 82 can be electrically connected to the contact point connecting the two resistors 90 and 91 .
- the control and evaluation device 100 is designed, for example, to detect faulty operation of the switching device 10 and, in response to this, to set the switching device 10 to the second operating state.
- a measuring device 50 which is designed in particular to measure a current through the current path 110, can be connected into the current path 110 in order to detect a fault.
- the control-evaluation device 100 can be designed to detect faulty operation of the switching device 30 as a function of a measured value received from the measuring device 50 . Faulty operation can be detected, for example, by the control and evaluation device 100 in that the current flowing through the current path 110 exceeds a predetermined threshold current value known to the control and evaluation device 100 .
- the manually resettable switching device 10 can have a detection device 70 which is preferably electrically connected to an input 102 of the control and evaluation device 100 .
- the detection device 70 is designed to signal the control and evaluation device 100 as to whether the relay 40 is plugged in or pulled out.
- the control and evaluation device 100 is also designed to i) recognize whether the relay 40 has been pulled after a detected faulty operation and plugged in again after a predetermined time, and if so, ii) the switching device 10 into the first operating state to set, in particular to reset.
- the control and evaluation device 100 can monitor the passage of time with the aid of a timer 105, which is an integral part of the control and
- Evaluation device 100 can be or can be designed as a separate component which can be electrically connected to control and evaluation device 100, as is shown by way of example in FIG.
- the control and evaluation device 100 can be a microcontroller.
- the detection device 70 can contain a voltage divider which has, for example, two electrical resistors 71 and 72 connected in series. In this case, one terminal of the electrical resistor 71 can be electrically connected to the connection contact 61 , while one terminal of the resistor 72 can be connected to the ground terminal 22 .
- the contact point that connects the two electrical resistors 71 and 72 to one another is electrically connected, for example, to the input 102 of the control and evaluation device 100 .
- the voltage divider 70 is connected in parallel with the semiconductor switch 80 or in parallel with the emitter-collector path of the npn transistor.
- the control and evaluation device 100 can be supplied with energy via an internal voltage converter 120, which transforms the DC voltage applied to the input connection 20, for example 24 V, down into a lower direct voltage, for example a direct voltage of 3.3 V, and feeds it to the control and evaluation device 100 can.
- an alternating voltage can also be applied to the input connection 20 .
- the AC voltage is converted by the voltage converter 120 into a DC voltage of, for example, 3.3 V.
- control and evaluation device 100 is designed to switch off the switching device 10 or set it to the second operating state in response to a detected faulty operation.
- the control and evaluation device 10 can cause the relay 40 to be switched off by means of the semiconductor switch 80 or the coil 42 to be de-energized.
- the switching element 41 can be opened, the current path 110 can be interrupted and the output connection 21 can thus be separated from the input connection 20 at which the supply voltage can be present.
- the control and evaluation device 100 can set the output 101 to 0V, as a result of which the transistor 80 is switched to the off state.
- a further semiconductor switch 30 which can be activated by the control and evaluation device 100 can be connected in series with the switching element 41 of the relay 40 in the current path 110 .
- the control and evaluation device 100 can be designed to also open the second semiconductor switch 30 in response to a detected faulty operation of the switching device 10 .
- Control and evaluation device 100 is preferably configured, in response to a detected faulty operation of switching device 10, to first switch the second semiconductor switch 30 to an electrically non-conducting or opening state, for example, and then, for example after a predetermined time has elapsed, to switch relay 40 switch off or to open the switching element 41 of the relay 40 .
- the second semiconductor switch 30 can in turn be implemented, for example, as a field effect transistor or as a bipolar transistor.
- the semiconductor switch 80 In the normal, i.e. in the first operating state of the switching device 10, the semiconductor switch 80 is closed, so that when the relay 40 is in the plugged-in state, current flows through the coil 42 and the switching element 41, which for example functions as a closer, is closed.
- the control and evaluation device 100 provides a voltage of, for example, 3.3 V at the input 101, which ensures that a sufficiently high control voltage is applied via the voltage divider 90, 91 to the base connection of the npn transistor, for example Semiconductor switch 80 is applied.
- the switching device 10 is preferably at least partially arranged in a housing 130 .
- Figure 2 shows a side view of the housing 130 in the open state.
- the current path 110, the control and evaluation device 100 and the detection device 70 within the housing 130 are shown schematically.
- the housing 130 can be designed, for example, as a mounting rail housing, such as a terminal block housing, which can be mounted on a mounting rail.
- corresponding latching elements 134 can be provided on the underside of the housing 130 .
- the overall width of the housing 130 is preferably very narrow, for example less than or equal to 6 mm.
- the housing 130 can be a plastic housing.
- connection contacts 60-63 of the switching device 10 can be located on a side of the mounting rail housing 130 which is opposite the side with the latching elements.
- the connection contacts 60 to 63 can be designed as socket contacts with which the coil connections 43, 44 and the switching element connections 45, 46 of the relay 40 are electrically connected in the plugged-in state. In this case, the coil connections and switching element connections are in the form of contact pins.
- the housing 130 can have a receiving area 135 into which the relay 40 can be inserted.
- a further connection terminal 132 can be electrically connected to the output connection 21 of the switching device 10 or can form the output connection 21 .
- Another terminal 133 can form the ground connection 22 of the switching device 10 .
- Another terminal 136 can also function as a ground connection.
- the energy supply device 5 shown in FIG. 1 can be connected to the connection terminals 131 and 133, while an electrical or electronic load can be connected to the connection terminals 132 and 136.
- the switching device 10 is operating correctly.
- the control and evaluation device 100 provides corresponding control signals for the semiconductor switches 30 and 80 which cause the semiconductor switches 30 and 80 to be closed or switched to the on state.
- the conductively switched semiconductor switch 80 in turn causes current to flow through the coil 41 of the relay 40 and consequently the switching element 41 of the relay 40 as well is closed. In this way, the current path 110 is switched through between the input connection 20 and the output connection 21 . This corresponds to the first operating state of switching device 10.
- measuring device 50 has measured a current in current path 110 that is greater than or equal to a predetermined threshold value.
- the measured current value is fed to the control and evaluation device 100, which detects faulty operation of the switching device 10 as a function of the measured current.
- the control and evaluation device 100 provides corresponding control signals for the semiconductor switches 30 and 80 at its outputs 103 and 101, for example with a time delay, which cause the semiconductor switch 30 to be opened first or switched to the blocking state, and then the semiconductor switch 80 is controlled into the blocking or open state.
- a control voltage of 0V can be applied to the two outputs 101 and 103, for example.
- the semiconductor switch 80 is turned off, the result is that the input voltage of 24 V, for example, present at the connection contact 60 or at the coil connection 43 also appears at the connection contact 61 or at the coil connection 44, whereupon the coil 42 is de-energized, i.e. switched off.
- the relay 40 drops out and the switching element 41 also opens the current path 110.
- the switching device 10 is therefore switched off or is in its second operating state.
- the second operating state is consequently characterized in particular in that the output connection 21 is electrically isolated from the input connection 20 .
- the switching device 10 now expects a manual reset, ie a renewed start-up and thus a resetting or resetting of the switching device 10 to the first operating state. This can be achieved, for example, by the customer pulling the relay 40 out of the switching device 10 or the housing 130 and reinserting it after a predetermined period of time has elapsed. This behavior can be monitored by the control and evaluation device 100 in Connection to the detector 70 and the timer 105 are monitored and detected. This is explained in more detail below by way of example.
- control and evaluation device 100 is designed to ensure, in response to a detected fault, that the semiconductor switch 30, if present, is opened or switched to the blocking state, and then the semiconductor switch 80 is opened or closed is controlled into the blocking state, so that the input voltage is also present at the coil connection 44 .
- This state is detected by the detection device 70, which is formed by the voltage divider 71 and 72, for example, and is applied to the input 102 of the control and evaluation device 100 as a high level.
- control and evaluation device 100 now expects relay 40 to be removed and, after the predetermined time has elapsed, reinserted.
- the potential at the connection contact 61 drops to 0 V, which in turn is detected by the voltage divider or the detection device 70 and signaled as a low level at the input 102 of the control and evaluation device 100.
- the timer 105 which can also be an integral part of the control and evaluation device 100, is started, as a result of which the predetermined time now elapses. After the predetermined time has elapsed, the control and evaluation device 100 expects that a high level will again be applied to the input 102, which signals that the relay has been used again.
- the conductive semiconductor 80 causes a current to flow through the coil 42 again and as a result the switching element 41 closes the current path 110 again.
- the current path 110 is closed again by means of the semiconductor switch 30 and the switching element 41 of the relay 40 and the input connection 20 is thus electrically connected to the output connection 21 .
- the semiconductor switch 30 is not required for proper operation of the switching device 10 .
- a manually resettable switching device 10 which is controllable into a first or a second operating state.
- the switching device 10 can have the following features: a current path 110 with an input connection 20, to which an input voltage can be applied, and with an output connection 21, a manually pluggable relay 40 having a coil 42 and a switching element 41, which in the plugged-in state of the relay 40 connected to current path 110, a control and evaluation device 100, which is designed to detect faulty operation of switching device 10 and, in response to this, to set switching device 10 to the second operating state, one with control and evaluation device 100 electrically connected detection device 70, which is designed to the control and evaluation device 100 to signal whether the relay 40 is plugged in or pulled, the control and evaluation device 100 is also designed to i) detect whether the relay 40 after a detected erroneous operation drawn and after expiry of a pre-determined mmten time has been reinserted, and if so, ii) to set the switching device 10 to the first operating state.
- the control and evaluation device 100 is also
- the first semiconductor switch 80 is advantageously connected in parallel with the detection device 70, it being possible for the first semiconductor switch 80 and the detection device 70 to be connected in series with the coil 42 when the relay 40 is in the plugged-in state.
- the detection device 70 can have a voltage divider, which can contain, for example, two electrical resistors 71 and 72 connected in series.
- the switching device can have a second semiconductor switch 30, which can be controlled by the control and evaluation device 100 and is connected in series with the switching element 41 of the relay 40 in the current path 110, wherein the control and evaluation device 100 can be designed to respond to open the second semiconductor switch 30 or to control it in a blocking state in response to a detected erroneous operation.
- an error detection device for example a measuring device 50, which is designed to measure a current through the current path 10
- the control and evaluation device 100 being designed for this purpose be to detect an erroneous operation in response to the measurement result of the measurement device 50 .
- the switching device 10 can advantageously have a housing 130, in particular a mounting rail housing, in which, among other things, the current path 110, the control and evaluation device 100 and the detection device 70 can be arranged. wherein the housing 130 and the relay 40 can each be configured for mechanical and electrical coupling to one another.
- a first coil connection 43 can be electrically connected to the input connection 20 and a second coil connection 44 can be electrically connected to the detection device 70 .
- the switching device 10 can have a timer 105 assigned to the control and evaluation device 100, which is designed to start the expiry of the predetermined time in response to the pulling of the relay 40, wherein the control and evaluation device 100 can be designed to i) detecting when the predetermined time has elapsed, and ii) in response to the elapsed predetermined time, setting the switching device 10 to the first operating state, wherein the output terminal 21 is electrically connected to the input terminal 20 in the first operating state.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electronic Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE20215025A BE1029028B1 (de) | 2021-01-18 | 2021-01-18 | Manuell rückstellbare Schaltvorrichtung |
PCT/EP2022/050730 WO2022152837A1 (de) | 2021-01-18 | 2022-01-14 | Manuell rückstellbare schaltvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4278371A1 true EP4278371A1 (de) | 2023-11-22 |
Family
ID=74504952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22702166.4A Pending EP4278371A1 (de) | 2021-01-18 | 2022-01-14 | Manuell rückstellbare schaltvorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240062978A1 (de) |
EP (1) | EP4278371A1 (de) |
CN (1) | CN116724374A (de) |
BE (1) | BE1029028B1 (de) |
WO (1) | WO2022152837A1 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6940021B2 (en) * | 2002-09-30 | 2005-09-06 | Rockwell Automation Technologies, Inc. | Zero space component adapter for rail mounted terminal block relays |
US7109833B1 (en) * | 2005-07-29 | 2006-09-19 | Rockwell Automation Technologies, Inc. | Terminal block time delay relay |
EP2983187B1 (de) * | 2014-08-05 | 2017-05-31 | Tyco Electronics (Shanghai) Co. Ltd. | Schütz, schützbaugruppe und steuerschaltung |
-
2021
- 2021-01-18 BE BE20215025A patent/BE1029028B1/de not_active IP Right Cessation
-
2022
- 2022-01-14 US US18/271,637 patent/US20240062978A1/en active Pending
- 2022-01-14 CN CN202280010165.XA patent/CN116724374A/zh active Pending
- 2022-01-14 WO PCT/EP2022/050730 patent/WO2022152837A1/de active Application Filing
- 2022-01-14 EP EP22702166.4A patent/EP4278371A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2022152837A1 (de) | 2022-07-21 |
BE1029028A1 (de) | 2022-08-16 |
BE1029028B1 (de) | 2022-08-22 |
US20240062978A1 (en) | 2024-02-22 |
CN116724374A (zh) | 2023-09-08 |
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