CN110429008B - Relay control circuit with inverted state - Google Patents
Relay control circuit with inverted state Download PDFInfo
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- CN110429008B CN110429008B CN201910784338.3A CN201910784338A CN110429008B CN 110429008 B CN110429008 B CN 110429008B CN 201910784338 A CN201910784338 A CN 201910784338A CN 110429008 B CN110429008 B CN 110429008B
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- 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
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Abstract
The invention discloses a relay control circuit with inverted states, which is used for solving the problem that the inverted states of contact signals cannot be obtained because the functions of rising edge detection, setting, resetting and the like are not available in the relay control circuit; the relay comprises an external input signal SF, a relay KQ, a relay KA1, a relay KA2 and a relay KA 3; the external input signal SF includes a normally open contact SF 1; the relay KQ is composed of a normally open contact KQa, a normally closed contact KQb, and a coil KQc; the relay KA1 is composed of a normally open contact KA1a, a normally open contact KA1b, a coil KA1c and a normally open contact KA1 d; the relay KA2 is composed of a normally closed contact KA2a, a normally closed contact KA2b and a coil KA2 c; the control circuit can reliably invert the state of the output signal when the input signal acts once; the circuit has the characteristics of simple structure, reliable action and low cost, and can reliably realize the negation of the state of the output signal according to the action of the input signal.
Description
Technical Field
The invention relates to the field of relays, in particular to a relay control circuit with a state reversal function.
Background
In an electrical control system, the problem of negating the signal state is frequently encountered, a state negating function of a variable is provided in an HMI, and a programmer only needs to configure the variable. Even if the HMI is not provided, the state inversion of the variable can be easily carried out in the program by using certain instructions (rising edge detection, setting, resetting and the like) provided by the PLC;
in the relay control circuit, functions such as rising edge detection, setting, resetting and the like are not available, and how to invert the state of one relay in the control circuit according to an external input signal;
in the circuit, when a button SF is pressed for the first time, a coil of an intermediate relay KQ can be reliably electrified and attracted; after the button SF is released for the first time, a coil of the intermediate relay KA2 is electrified and sucked, and preparation is made for pressing the button SF for the second time; at the moment of the second depression of the push button SF, the coil of the intermediate relay KQ is de-energized, and subsequently the coil of the intermediate relay KA2 is also de-energized, the normally closed contact of KA2 resets the on terminals X3 and X5 after a few milliseconds, and if the push button SF cannot be released before the normally closed contact of KA2 resets the on terminals X3 and X5, the coil of the intermediate relay KQ will be energized again. The button SF is switched on and released within a plurality of milliseconds, and if the button SF is manually operated, the high reaction speed cannot be achieved at all; if the signal is sent by the electronic switch, the mechanical action of the intermediate relay is too late to react, and the conclusion is that the circuit can not meet the requirements.
Still related to another section of control circuit among the prior art as shown in fig. 3, changed time relay KT into auxiliary relay KA2, set for time relay KT's the time delay time of losing power, as long as make button SF press the time of releasing again and be less than time relay KT's the time delay time of losing power for the second time, just can make the circuit reset, solve auxiliary relay KQ's the problem that the coil loses power in the twinkling of an eye and gets power again. The circuit can not meet the requirement of quick action of an external input signal (a button SF), and has certain defects.
In view of the above problems, the present invention provides a relay control circuit with state inversion, which solves the problem that in the relay control circuit, no functions such as rising edge detection, setting, resetting, etc. can be utilized, and achieves the purpose of state inversion of contact signals.
Disclosure of Invention
The invention aims to provide a relay control circuit with inverted states, which is used for solving the problem that the state inversion cannot be carried out on contact signals because no functions such as rising edge detection, setting, resetting and the like can be utilized in the relay control circuit;
the purpose of the invention can be realized by the following technical scheme: a relay control circuit with inverted states comprises an external input signal SF, a relay KQ, a relay KA1, a relay KA2 and a relay KA 3; the external input signal SF includes a normally open contact SF 1; the relay KQ is composed of a normally open contact KQa, a normally closed contact KQb, and a coil KQc; the relay KA1 is composed of a normally open contact KA1a, a normally open contact KA1b, a coil KA1c and a normally open contact KA1 d; the relay KA2 is composed of a normally closed contact KA2a, a normally closed contact KA2b and a coil KA2 c; the relay KA3 is composed of a normally open contact KA3a, a normally closed contact KA3b and a coil KA3 c;
one ends of the normally open contact SF1, the normally open contact KA1a, the normally open contact KA1b, the normally open contact KQa, the normally closed contact KA2a and the normally open contact KA3a are all connected with a 220V wire of a power supply; the other end of the normally open contact SF1 is connected with one end of a terminal X1, the other end of the terminal X1 is connected with one end of a coil KA1c, the other end of the normally open contact KA1a is connected with one end of a terminal X11, and the other end of the terminal X11 is connected with a coil KA2 c; the other end of the normally open contact KA1b is connected with one end of a terminal X3, and the other end of the terminal X3 is connected with one end of a normally closed contact KA2 b; the other end of the normally closed contact KA2b is connected with one end of a terminal X5, the other end of the terminal X5 is connected with one end of a coil KQc and one end of a normally closed contact KA3b, and the other end of the normally closed contact KA3b is connected with a terminal X3;
the other end of normally closed contact KA2a is connected with the one end of terminal X7, the other end of terminal X7 is connected with the other end of normally open contact KA3a and the one end of normally closed contact KQb, the other end of normally closed contact KQb is connected with the one end of terminal X9, the other end of terminal X9 is connected with the one end of normally open contact KA1d and the one end of coil KA3c, the other end of normally open contact KA1d is connected with the one end of terminal X7 and the other end of normally open contact KA3 a.
Further, the other ends of the coil KQc, the coil KA1c, the coil KA2c and the coil KA3c are connected with a power supply 0V line.
The invention has the beneficial effects that: the control circuit can reliably invert the state of the output signal every time the input signal acts once; the circuit has the characteristics of simple structure, reliable action and low cost, and can reliably realize the negation of the state of the output signal according to the action of the input signal.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a circuit diagram of a state-reversed relay control circuit of the present invention;
FIG. 2 is a prior art relay control circuit diagram;
fig. 3 is a diagram of another prior art relay control circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention includes an external input signal SF, a relay KQ, a relay KA1, a relay KA2, and a relay KA 3; the external input signal SF includes a normally open contact SF 1; the relay KQ is composed of a normally open contact KQa, a normally closed contact KQb, and a coil KQc; the relay KA1 is composed of a normally open contact KA1a, a normally open contact KA1b, a coil KA1c and a normally open contact KA1 d; the relay KA2 is composed of a normally closed contact KA2a, a normally closed contact KA2b and a coil KA2 c; the relay KA3 is composed of a normally open contact KA3a, a normally closed contact KA3b and a coil KA3 c;
one ends of a normally open contact SF1, a normally open contact KA1a, a normally open contact KA1b, a normally open contact KQa, a normally closed contact KA2a and a normally open contact KA3a are all connected with a 220V wire of a power supply; the other end of the normally open contact SF1 is connected with one end of a terminal X1, the other end of the terminal X1 is connected with one end of a coil KA1c, the other end of the normally open contact KA1a is connected with one end of a terminal X11, and the other end of the terminal X11 is connected with a coil KA2 c; the other end of the normally open contact KA1b is connected with one end of a terminal X3, and the other end of the terminal X3 is connected with one end of a normally closed contact KA2 b; the other end of the normally closed contact KA2b is connected with one end of a terminal X5, the other end of the terminal X5 is connected with one end of a coil KQc and one end of a normally closed contact KA3b, and the other end of the normally closed contact KA3b is connected with a terminal X3;
the other end of the normally closed contact KA2a is connected with one end of a terminal X7, the other end of the terminal X7 is connected with the other end of a normally open contact KA3a and one end of a normally closed contact KQb, the other end of the normally closed contact KQb is connected with one end of a terminal X9, the other end of the terminal X9 is connected with one end of a normally open contact KA1d and one end of a coil KA3c, and the other end of the normally open contact KA1d is connected with one end of a terminal X7 and the other end of a normally open contact KA3 a.
The other ends of the coil KQc, the coil KA1c, the coil KA2c and the coil KA3c are connected with a power supply 0V wire;
as shown in fig. 2, the button SF is switched on and off within a few milliseconds, and if it is manually operated, it is impossible to achieve such a high reaction speed at all; if the signal is sent by the electronic switch, the mechanical action of the intermediate relay does not react in time, and the conclusion is that the circuit can not meet the requirement; as shown in fig. 3, as long as the time for releasing the button SF after being pressed for the second time is shorter than the power-off delay time of the time relay KT, the circuit can be reset, and the problem that the coil of the intermediate relay KQ is instantly powered off and then powered on is solved. The circuit can not meet the requirement of quick action of an external input signal (a button SF), and has certain defects;
the working principle of the invention is as follows: when the button SF is pressed for the first time, the 220V power supply reaches a terminal X3 through a normally open contact KA1b of the relay KA1, and then reaches a coil KQc of the relay KQ through a normally closed contact KA3b of the relay KA3, a coil KQc of the relay KQ is electrified and sucked, the 220V power supply and the terminal X3 are automatically locked at the moment through the normally open contact KQa of the relay KQ, the function declaration of the first pressing of the button SF is finished, and the pressing time is irrelevant;
when the button SF is released for the first time, although the normally open contact KA1b of the relay KA1 is disconnected, the coil KQc of the relay KQ is kept electrified and attracted due to instant self-locking of the normally open contact of the relay KQa; then, the coil KA2c of the relay KA2 loses power, the normally closed contact KA2a of the relay KA2 is reset to be connected with a 220V power supply and a terminal X7, and the coil KA3c of the relay KA3 is electrified and sucked; then, although the normally closed contact KA3b of the relay KA3 between the terminals X3 and X5 is opened, the normally closed contact KA2b of the relay KA2 between the terminals X3 and X5 is already reset before the normally closed contact KA3b of the relay KA3 is opened, and the coil KQc of the relay KQ is still kept electrically attracted;
when the button SF is pressed for the second time, the coil KA2c of the relay KA2 is electrified, the normally closed contact KA2b of the relay KA2 disconnects the line between the terminals X3 and X5, at the moment, the coil KA3c of the relay KA3 is electrified, the normally closed contact KAb of the relay KA3 disconnects the line between the terminals X3 and X5, and therefore the coil of the relay KQ is electrified; although the normally open contact KQb of the relay KQ disconnects the line between the terminals X7 and X9, since the coil KA1c of the relay KA1 is still electrified, the normally open contact KA1d of the relay KA1 still connects the line between the terminals X7 and X9, and the coil KA3c of the relay KA3 is kept electrified;
after the button SF is released for the second time, the coil KA1c of the relay KA1 loses power, so that a line between the terminals X7 and X9 is completely disconnected, the coil KA3c of the relay KA3 loses power, the whole control circuit is completely reset, and the control circuit can reliably negate the state of an output signal when an input signal acts once; the circuit has the characteristics of simple structure, reliable action and low cost, and can reliably realize the negation of the state of the output signal according to the action of the input signal.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (2)
1. A relay control circuit with inverted states comprises an external input signal SF, a relay KQ, a relay KA1, a relay KA2 and a relay KA 3; wherein the external input signal SF includes a normally open contact SF 1; the relay KQ is composed of a normally open contact KQa, a normally closed contact KQb, and a coil KQc; the relay KA1 is composed of a normally open contact KA1a, a normally open contact KA1b, a coil KA1c and a normally open contact KA1 d; the relay KA2 is composed of a normally closed contact KA2a, a normally closed contact KA2b and a coil KA2 c; the relay KA3 is composed of a normally open contact KA3a, a normally closed contact KA3b and a coil KA3 c;
one ends of the normally open contact SF1, the normally open contact KA1a, the normally open contact KA1b, the normally open contact KQa, the normally closed contact KA2a and the normally open contact KA3a are all connected with a 220V wire of a power supply; the other end of the normally open contact SF1 is connected with one end of a terminal X1, the other end of the terminal X1 is connected with one end of a coil KA1c, the other end of the normally open contact KA1a is connected with one end of a terminal X11, and the other end of the terminal X11 is connected with a coil KA2 c; the other end of the normally open contact KA1b is connected with one end of a terminal X3, and the other end of the terminal X3 is connected with one end of a normally closed contact KA2 b; the other end of the normally closed contact KA2b is connected with one end of a terminal X5, the other end of the terminal X5 is connected with one end of a coil KQc and one end of a normally closed contact KA3b, and the other end of the normally closed contact KA3b is connected with a terminal X3;
the other end of normally closed contact KA2a is connected with the one end of terminal X7, the other end of terminal X7 is connected with the other end of normally open contact KA3a and the one end of normally closed contact KQb, the other end of normally closed contact KQb is connected with the one end of terminal X9, the other end of terminal X9 is connected with the one end of normally open contact KA1d and the one end of coil KA3c, the other end of normally open contact KA1d is connected with the one end of terminal X7 and the other end of normally open contact KA3 a.
2. The inverted relay control circuit according to claim 1, wherein the other ends of the coil KQc, coil KA1c, coil KA2c and coil KA3c are connected to a 0V line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784338.3A CN110429008B (en) | 2019-08-23 | 2019-08-23 | Relay control circuit with inverted state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784338.3A CN110429008B (en) | 2019-08-23 | 2019-08-23 | Relay control circuit with inverted state |
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| CN110429008A CN110429008A (en) | 2019-11-08 |
| CN110429008B true CN110429008B (en) | 2021-06-08 |
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| CN201910784338.3A Active CN110429008B (en) | 2019-08-23 | 2019-08-23 | Relay control circuit with inverted state |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113156234A (en) * | 2021-03-17 | 2021-07-23 | 内蒙古电力(集团)有限责任公司乌海超高压供电局 | Power equipment running state detection system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201788902U (en) * | 2010-05-27 | 2011-04-06 | 上海纳杰电气成套有限公司 | Intermediate relay circulation control circuit |
| CN203823201U (en) * | 2014-05-16 | 2014-09-10 | 南通天蓝环保能源成套设备有限公司 | Timing blow-down valve control circuit for landfill leachate treatment |
| CN206976250U (en) * | 2017-07-24 | 2018-02-06 | 北京水木源华电气股份有限公司 | A kind of spring operating mechanism switchs leap preventing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9949338B2 (en) * | 2014-07-08 | 2018-04-17 | Phillip C. Wilson | Device to allow a two-way switch to operate in a multiple-switch electrical circuit |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201788902U (en) * | 2010-05-27 | 2011-04-06 | 上海纳杰电气成套有限公司 | Intermediate relay circulation control circuit |
| CN203823201U (en) * | 2014-05-16 | 2014-09-10 | 南通天蓝环保能源成套设备有限公司 | Timing blow-down valve control circuit for landfill leachate treatment |
| CN206976250U (en) * | 2017-07-24 | 2018-02-06 | 北京水木源华电气股份有限公司 | A kind of spring operating mechanism switchs leap preventing device |
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| CN110429008A (en) | 2019-11-08 |
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Address after: 243071 no.665 Xitang Road, economic and Technological Development Zone, Maanshan City, Anhui Province Patentee after: ANHUI XINCHUANG ENERGY SAVING & ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 243071 no.665 Xitang Road, Hefei Economic and Technological Development Zone, Anhui Province Patentee before: ANHUI XINCHUANG ENERGY SAVING & ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. |