CN213367631U - Industrial power supply on-off control circuit and control cabinet - Google Patents
Industrial power supply on-off control circuit and control cabinet Download PDFInfo
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- CN213367631U CN213367631U CN202021814520.3U CN202021814520U CN213367631U CN 213367631 U CN213367631 U CN 213367631U CN 202021814520 U CN202021814520 U CN 202021814520U CN 213367631 U CN213367631 U CN 213367631U
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Abstract
The embodiment of the utility model discloses industrial power switch machine control circuit and switch board relates to power electronic technology field. The method comprises the following steps: the shutdown control circuit comprises a shutdown signal input circuit and a shutdown delay circuit which are arranged in parallel, the shutdown signal input circuit comprises a first normally open dry contact and a first intermediate relay, the input end of the first normally open dry contact is used for being connected with the controller, the output end of the first normally open dry contact is connected with the first end of a first intermediate relay coil, and the normally closed contact of the first intermediate relay is connected in the startup control circuit; the shutdown delay circuit comprises a first delay relay, a first end of a first delay relay coil is connected with one end of a normally open contact of a first intermediate relay, and the other end of the normally open contact of the first intermediate relay is used for being connected with a controller; the output end of the shutdown signal input circuit and the output end of the shutdown delay circuit are respectively used for connecting an industrial power supply. The problem of equipment damage possibly caused by misoperation can be solved.
Description
Technical Field
The utility model relates to a power electronic technology field especially relates to an industrial power supply switching on and shutting down control circuit and switch board.
Background
The current industrial power supply on-off control scheme is as follows: a startup and shutdown control circuit is arranged between a controller of the control cabinet and the power supply cabinet. As shown in fig. 1, the on-off control circuit comprises a normally open dry contact S and a time relay KA which are serially arranged in the circuit, wherein one end of the normally open dry contact is connected with an output pin of the controller, the other end of the normally open dry contact is connected with a normally closed contact of the time relay, and one end of the normally open contact of the time relay is connected with an input pin of the controller and used for on-off signal feedback.
The controller in the control cabinet sends a group of dry contact signals to control the normally open dry contact, the dry contact is closed, and the power supply cabinet is started. After the controller is started, the time relay is electrified, the normally open contact of the time relay is closed, a group of dry contact signals (indicating starting) are fed back and sent to the controller, and after the control cabinet receives the feedback normally open dry contact closed signal, the controller is locked by the relay in the controller.
The inventor finds out in the process of realizing the invention: although the existing industrial power supply on-off control scheme is simple in circuit topology, misoperation is easy to occur to cause the industrial power supply to be suddenly powered off, and therefore damage can be caused to equipment such as the industrial power supply.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides an industrial power switch control circuit and a control cabinet, which can solve the problem of equipment damage caused by misoperation.
In order to achieve the above object, a first aspect of the present invention provides an industrial power supply on/off control circuit, including: the shutdown control circuit comprises a shutdown signal input circuit and a shutdown delay circuit which are arranged in parallel, the shutdown signal input circuit comprises a first normally open dry contact and a first intermediate relay, the input end of the first normally open dry contact is used for being connected with a controller, the output end of the first normally open dry contact is connected with the first end of a first intermediate relay coil, the second end of the first intermediate relay coil is the output end of the shutdown signal input circuit, and the normally closed contact of the first intermediate relay is connected in the startup control circuit;
the shutdown delay circuit comprises a first delay relay, a first end of a first delay relay coil is connected with one end of a normally open contact of a first intermediate relay, the other end of the normally open contact of the first intermediate relay is used for being connected with a controller, and a second end of the first delay relay coil is an output end of the shutdown delay circuit;
and the output end of the shutdown signal input circuit and the output end of the shutdown delay circuit are respectively used for connecting an industrial power supply.
Optionally, the start-up control circuit includes a start-up delay circuit, the start-up delay circuit includes that the second normally opens dry contact and second time delay relay, the input of the second normally opens dry contact is used for connection director, the output of the second normally opens dry contact is connected in the first end of first intermediate relay's normally closed contact, the second end of first intermediate relay's normally closed contact connect in the first end of second time delay relay's coil, the second end of second time delay relay's coil is the output of start-up delay circuit.
Optionally, the start-up control circuit includes a start-up signal input circuit and a start-up delay circuit, the start-up signal input circuit includes a second normally-open dry contact and a second intermediate relay which are arranged in series, an input end of the second normally-open dry contact is used for connecting the controller, an output end of the second normally-open dry contact is connected with a first end of a coil of the second intermediate relay, and a second end of the coil of the second intermediate relay is an output end of the start-up signal input circuit;
the starting-up time delay circuit comprises a second time delay relay, wherein a first end of the second time delay relay is sequentially connected with a normally closed contact of a first time delay relay, a normally open contact of a second intermediate relay and a normally closed contact first end of the first intermediate relay in series, a second end of the normally closed contact of the first intermediate relay is an input end of the starting-up time delay circuit, and a second end of the second time delay relay is an output end of the starting-up time delay circuit;
and the output end of the starting-up signal input circuit and the output end of the starting-up delay circuit are respectively used for connecting an industrial power supply.
Optionally, one end of a first normally open contact of the second time delay relay is connected to the power-on time delay circuit, and the other end of the first normally open contact is connected to an input end of the second normally open dry contact.
Optionally, the normally closed contact of the second intermediate relay is connected in series in the shutdown delay circuit.
Optionally, the power-on control circuit further includes a power-on feedback circuit, one end of the power-on feedback circuit is connected to the output end of the power-on delay circuit, and the other end of the power-on feedback circuit is used for connecting to a controller.
Optionally, the power-on feedback circuit includes a second normally open contact of a second time delay relay.
In a second aspect, the present invention provides a control cabinet, including a controller, the control end of the controller is connected to any of the first aspect the industrial power supply on/off control circuit, the input of the power on control circuit and the power off control circuit of the industrial power supply on/off control circuit respectively with the control end of the controller is connected, the output of the power on control circuit and the power off control circuit is respectively used for connecting the industrial power supply.
The embodiment of the utility model provides an industrial power supply switching on and shutting down control circuit and switch board, include: the shutdown control circuit comprises a shutdown signal input circuit and a shutdown delay circuit which are arranged in parallel, and the output end of the shutdown signal input circuit and the output end of the shutdown delay circuit are respectively used for being connected with an industrial power supply. When using, through the controller with in the switch board through this industrial power switch control circuit connection industrial power supply, owing to set up specific shutdown delay circuit among the shutdown control circuit, when taking place the maloperation and triggering shutdown instruction, can prevent to appear because of the equipment damage problem that industrial power outage probably caused suddenly, solved the equipment damage problem that the maloperation probably caused to realized industrial power supply's shutdown protection to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of an embodiment of a conventional industrial power switch control circuit;
fig. 2 is a schematic circuit block diagram of an embodiment of the industrial power on/off control circuit of the present invention;
fig. 3 is a schematic circuit diagram of another embodiment of the industrial power switch control circuit of the present invention;
fig. 4 is a schematic circuit diagram of another embodiment of the power on/off control circuit of the industrial power supply of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be apparent that numerous technical details are set forth in the following detailed description to provide a more thorough description of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without some of these details. In addition, some methods, means, components and applications thereof known to those skilled in the art are not described in detail in order to highlight the gist of the present invention, but the implementation of the present invention is not affected thereby. The embodiments described herein are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
Referring to fig. 2 to 4, an embodiment of the present invention provides an industrial power supply on/off control circuit, which is suitable for industrial power supply control. The industrial power supply on-off control circuit comprises: start control circuit and shutdown control circuit, shutdown control circuit includes parallelly connected shutdown signal input circuit and the shutdown delay circuit that sets up, shutdown signal input circuit includes first normally open dry junction S1 and first auxiliary relay KA4, first normally open dry junction S1 'S input is used for connection director, first normally open dry junction S1' S output with the first end of first auxiliary relay KA4 coil is connected, the second end of first auxiliary relay KA4 coil is the output of shutdown signal input circuit, first auxiliary relay KA4 'S normally closed contact connect in the start control circuit, first auxiliary relay KA 4' S normally closed contact is 2 and 10 feet of KA4 in the picture.
The shutdown delay circuit comprises a first delay relay KA3, a first end of a coil of the first delay relay KA3 is connected with one end of a normally open contact of a first intermediate relay KA4, and the other end of the normally open contact of the first intermediate relay KA4 is used for connecting a controller, namely a pin 5 and a pin 9 of the normally open contact of KA4 in the figure; and the second end of the coil of the first time delay relay KA3 is the output end of the shutdown time delay circuit.
The output end of the shutdown signal input circuit and the output end of the shutdown delay circuit are respectively used for being connected with an industrial power supply so as to realize the startup and shutdown control of the industrial power supply.
The shutdown delay circuit may also be referred to as a delayed shutdown circuit.
In this embodiment, when an event that the power supply is to be turned off occurs, a dry contact signal is sent to close the first normally open dry contact S1, at this time, the coil of the first intermediate relay KA4 is powered on and attracted, the normally open contacts "the 5 th pin and the 9 th pin" are closed, the coil of the time relay KA3 of the turn-off delay circuit is powered on and starts timing, when the time reaches a preset delay time, the delay time can be set to 5-10S, for example, the delay time is set to 5S, the first intermediate relay KA4 is connected to the normally closed contact in the turn-on control circuit, that is, the 2 and 10 pins of KA4 in the figure are disconnected, even if the turn-on control circuit is disconnected, the turn-off of the industrial power supply is realized.
In the control process of realizing shutdown, due to the fact that the specific shutdown delay circuit is arranged, once misoperation occurs, the phenomenon that the industrial power supply is suddenly powered off cannot occur, shutdown can be realized after the preset time is delayed, and therefore the problem of equipment damage possibly caused by sudden power off of the industrial power supply can be prevented.
Therefore, the embodiment of the utility model provides an industrial power supply on-off control circuit, when using, through passing through this industrial power supply on-off control circuit with the controller in the switch board and connecting industrial power supply, because set up specific shutdown delay circuit among the shutdown control circuit, when taking place the maloperation and triggering shutdown instruction, can prevent to appear because of the equipment damage problem that industrial power supply outage suddenly probably caused, the equipment damage problem that the maloperation probably caused has been solved to the shutdown protection of industrial power supply has been realized to a certain extent.
Further, in order to realize the time-delay start-up protection, referring to fig. 2 and fig. 3, in some embodiments, the start-up control circuit includes a start-up circuit, in some examples, the start-up circuit is a start-up time-delay circuit, the start-up time-delay circuit includes a second normally-open dry contact S2 and a second time-delay relay KA1, an input end of the second normally-open dry contact S2 is used for connecting the controller, an output end of the second normally-open dry contact S2 is connected to first ends of normally-closed contacts 2 and 10 of a first intermediate relay KA4, second ends of the normally-closed contacts 2 and 10 of the first intermediate relay KA4 are connected to a first end of a coil of a second time-delay relay KA1, and a second end of the coil of the second time-delay relay KA1 is an output end of the start-up time-.
The startup delay circuit may also be referred to as a delayed startup circuit.
In this embodiment, when the industrial power supply needs to be remotely started, the controller sends a "remote start signal" to close the second normally open dry contact S2, the coil of the second delay relay KA1 is powered on and starts timing, and when the time is greater than the preset delay time, the start of the industrial power supply is realized.
Referring to fig. 4, in another implementation manner of the startup control circuit capable of realizing time-delay protection, the startup control circuit includes a startup signal input circuit and a startup time-delay circuit, the startup signal input circuit includes a second normally-open dry contact S2 and a second intermediate relay KA2 that are serially connected, an input end of the second normally-open dry contact S2 is used for connecting a controller, an output end of the second normally-open dry contact S2 is connected with a first end of a coil of the second intermediate relay KA2, and a second end of the coil of the second intermediate relay KA2 is an output end of the startup signal input circuit.
The start-up time delay circuit comprises a second time delay relay KA1, the first end of a second time delay relay KA1 coil is sequentially connected with a normally closed contact 2 and 10 of a first time delay relay, a normally open contact 5 and 9 of a second intermediate relay KA2 and a normally closed contact first end 10 of a first intermediate relay KA4 in series, the normally closed contact second end 2 of the first intermediate relay is used as the input end of the start-up time delay circuit, and the second end of the second time delay relay is used as the output end of the start-up time delay circuit.
And the output end of the starting-up signal input circuit and the output end of the starting-up delay circuit are respectively used for connecting an industrial power supply.
In this embodiment, when the industrial power supply needs to be remotely started, the controller sends a "remote start signal" to close the second normally-open dry contact S2 in the start signal input circuit, at this time, the coil of the second intermediate relay KA2 is powered and attracted, and is connected to the normally-open contact in the start delay circuit, that is, "the 5 th pin and the 9 th pin" of KA2 in the drawing are closed, the coil of the second delay relay KA1 is powered and starts timing, and when the time is longer than a preset delay time, for example, when the time is longer than 5S, the start of the industrial power supply is realized.
When an event that the power supply needs to be turned off occurs, for example, a switch button of the controller is triggered by misoperation, the controller sends a dry contact signal (used for indicating a shutdown signal) to close the first normally-open dry contact S1, at the moment, the coil of the first intermediate relay KA4 is electrified and attracted, the normally-open contacts 'the 5 th pin and the 9 th pin' are closed, the coil of the time relay KA3 of the shutdown delay circuit is electrified and starts timing, after the time reaches a preset delay time, the delay time can be set to be 5-10S, for example, the delay time is set to be 5S, the first intermediate relay KA4 is connected to the normally-closed contact in the startup control circuit, namely, the 2 and 10 pins of the KA4 in the figure are disconnected, and even if the startup control circuit is disconnected, the industrial power supply is turned off.
It will be appreciated that in industrial control lines the voltage is typically DC24V, the main circuit voltage is AC220VAC220V, i.e. the control circuit portion is at low voltage and the main circuit portion is at high AC voltage, which facilitates maintenance and safe use by separating DC from AC and high and low voltages.
In order to realize the power-on self-locking function, in the two embodiments, one end of the first normally open contact of the second delay relay KA1 is connected to the power-on delay circuit, and the other end is connected to the input end of the second normally open dry contact. Therefore, when the coil of the second delay relay KA1 is electrified and is started up when the preset time is reached, the pins 8 and 12 of the first normally open contact of the second delay relay KA1 are connected, and the second delay relay KA1 can keep the electrified state through the first normally open contact (in the self-locking circuit, the contact is also called as a self-locking contact) to form a startup self-locking circuit.
As shown in fig. 4, in some embodiments, the normally closed contact of the second intermediate relay KA2 is connected in series in the shutdown delay circuit.
In this embodiment, when the remote end triggers the start and stop commands at the same time, the power cabinet remains in the current state and does no action. The method specifically comprises the following steps:
A. if the current power is in the on state, when receiving the start and close signal, first normally open dry contact S1 and second normally open dry contact S2 are all closed, first auxiliary relay KA4 and second auxiliary relay KA2 ' S coil respectively get the electric actuation, wherein second auxiliary relay KA2 ' S normally closed contact "2 nd foot and 10 th foot" disconnection, first auxiliary relay KA4 ' S normally open contact "5 th foot and 9 th foot" are closed, first time delay relay KA3 coil can't get the electricity, shutdown control circuit does not switch on, can't carry out the shutdown instruction, the power still keeps the on state.
B. If the current power is in the shutdown state, when receiving start and close signal, first normally open dry contact S1 and second normally open dry contact S2 are all closed, first auxiliary relay KA4 and second auxiliary relay KA2 ' S coil respectively get the electric actuation, first auxiliary relay KA4 ' S normally closed contact "2 nd foot and 10 th foot" disconnection, second auxiliary relay KA2 ' S normally open contact "5 th foot and 9 th foot" are closed, first time delay relay KA1 ' S coil also can't get the electricity, start control circuit does not switch on, can not carry out the start instruction, the power still keeps the shutdown state.
In summary, in the embodiment, no matter when the power supply is currently in the power-on state or the power-off state, when the start instruction and the stop instruction are triggered simultaneously, the power supply state is not affected. Therefore, accidents caused by misoperation can be better avoided, and the protection of the power supply is effectively realized.
Referring to fig. 3 and 4, as an alternative embodiment, the power-on control circuit further includes a power-on feedback circuit for feeding back the current power supply operating state; one end of the starting-up feedback circuit is connected to the output end of the starting-up delay circuit, and the other end of the starting-up feedback circuit is used for being connected with a controller.
Specifically, the starting feedback circuit comprises pins 6 and 10 of a second normally open contact of the second time delay relay KA 1.
In this embodiment, the control terminal can better control the power on/off state of the local power supply by setting the power on feedback circuit and connecting the power on feedback circuit with the controller.
Example two
The embodiment of the utility model provides a still provide a switch board, including the controller the control end of controller is connected with one of embodiment any industrial power switch machine control circuit, industrial power switch machine control circuit's start control circuit and shutdown control circuit's input respectively with the control end of controller is connected, start control circuit and shutdown control circuit's output is used for connecting industrial power respectively.
The embodiment of the utility model provides a switch board, owing to included the embodiment any industrial power supply on-off control circuit, when taking place the maloperation and triggering the shutdown instruction, can prevent to appear because of the equipment damage problem that industrial power supply outage probably caused suddenly, solved the equipment damage problem that the maloperation probably caused to realized industrial power supply's shutdown protection to a certain extent, guaranteed industrial power supply's normal operating.
It should be noted that the terms "upper", "lower", and the like, herein indicate orientations and positional relationships, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. As will be appreciated by one of ordinary skill in the art, the situation may be specified.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An industrial power supply on-off control circuit is characterized by comprising: the shutdown control circuit comprises a shutdown signal input circuit and a shutdown delay circuit which are arranged in parallel, the shutdown signal input circuit comprises a first normally open dry contact and a first intermediate relay, the input end of the first normally open dry contact is used for being connected with a controller, the output end of the first normally open dry contact is connected with the first end of a first intermediate relay coil, the second end of the first intermediate relay coil is the output end of the shutdown signal input circuit, and the normally closed contact of the first intermediate relay is connected in the startup control circuit;
the shutdown delay circuit comprises a first delay relay, a first end of a first delay relay coil is connected with one end of a normally open contact of a first intermediate relay, the other end of the normally open contact of the first intermediate relay is used for being connected with a controller, and a second end of the first delay relay coil is an output end of the shutdown delay circuit;
and the output end of the shutdown signal input circuit and the output end of the shutdown delay circuit are respectively used for connecting an industrial power supply.
2. The industrial power supply startup and shutdown control circuit according to claim 1, wherein the startup control circuit comprises a startup delay circuit, the startup delay circuit comprises a second normally open dry contact and a second delay relay, an input end of the second normally open dry contact is used for connecting a controller, an output end of the second normally open dry contact is connected to a first end of a normally closed contact of a first intermediate relay, a second end of the normally closed contact of the first intermediate relay is connected to a first end of a coil of the second delay relay, and a second end of the coil of the second delay relay is an output end of the startup delay circuit.
3. The industrial power supply on-off control circuit according to claim 1, wherein the on-off control circuit comprises an on-signal input circuit and an on-delay circuit, the on-signal input circuit comprises a second normally open dry contact and a second intermediate relay which are arranged in series, an input end of the second normally open dry contact is used for connecting a controller, an output end of the second normally open dry contact is connected with a first end of a coil of the second intermediate relay, and a second end of the coil of the second intermediate relay is an output end of the on-signal input circuit;
the starting-up time delay circuit comprises a second time delay relay, wherein a first end of the second time delay relay is sequentially connected with a normally closed contact of a first time delay relay, a normally open contact of a second intermediate relay and a normally closed contact first end of the first intermediate relay in series, a second end of the normally closed contact of the first intermediate relay is an input end of the starting-up time delay circuit, and a second end of the second time delay relay is an output end of the starting-up time delay circuit;
and the output end of the starting-up signal input circuit and the output end of the starting-up delay circuit are respectively used for connecting an industrial power supply.
4. The industrial power supply on-off control circuit as claimed in claim 2 or 3, wherein the first normally open contact of the second delay relay is connected to the power-on delay circuit at one end, and is connected to the input end of the second normally open dry contact at the other end.
5. The industrial power switching control circuit according to claim 3, wherein the normally closed contact of the second intermediate relay is connected in series in the shutdown delay circuit.
6. The industrial power on/off control circuit as claimed in claim 2, wherein the power on control circuit further comprises a power on feedback circuit, one end of the power on feedback circuit is connected to the output end of the power on delay circuit, and the other end of the power on feedback circuit is connected to the controller.
7. The industrial power switching control circuit according to claim 6, wherein the power-on feedback circuit comprises a second normally open contact of a second time delay relay.
8. A control cabinet comprises a controller, and is characterized in that a control end of the controller is connected with the industrial power supply on-off control circuit of any one of claims 1 to 7, input ends of the on-off control circuit and the power-on control circuit of the industrial power supply on-off control circuit are respectively connected with the control end of the controller, and output ends of the on-off control circuit and the power-on control circuit are respectively used for being connected with an industrial power supply.
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| CN202021814520.3U CN213367631U (en) | 2020-08-26 | 2020-08-26 | Industrial power supply on-off control circuit and control cabinet |
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| CN202021814520.3U CN213367631U (en) | 2020-08-26 | 2020-08-26 | Industrial power supply on-off control circuit and control cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113489498A (en) * | 2021-07-21 | 2021-10-08 | 天津七六四通信导航技术有限公司 | Automatic switching system of high-voltage antenna |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113489498A (en) * | 2021-07-21 | 2021-10-08 | 天津七六四通信导航技术有限公司 | Automatic switching system of high-voltage antenna |
| CN113489498B (en) * | 2021-07-21 | 2024-05-28 | 天津七六四通信导航技术有限公司 | Automatic switching system of high-voltage antenna |
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