CN103116307B - Unit pump valve control circuit - Google Patents
Unit pump valve control circuit Download PDFInfo
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- CN103116307B CN103116307B CN201310006310.XA CN201310006310A CN103116307B CN 103116307 B CN103116307 B CN 103116307B CN 201310006310 A CN201310006310 A CN 201310006310A CN 103116307 B CN103116307 B CN 103116307B
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- indicator lamp
- pump valve
- branch road
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- 230000005611 electricity Effects 0.000 description 8
- 230000000630 rising effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The invention discloses a kind of unit pump valve control circuit, comprise open indicator lamp, close indicator lamp, the manually opened button of often opening, normally closed manual-lock button and by the relay of PLC normally opened contact control pump valve power supply, relay is also provided with the second normally-closed contact and the 3rd normally opened contact; The second normally-closed contact with close indicator lamp the first branch road in series; The 3rd normally opened contact and unlatching indicator lamp the second branch road in series; The manually opened button that the coil of relay with normally closed manual-lock button, is often opened is successively in series and forms the 3rd branch road; And in the 3rd branch road, also often to drive gauge tap in parallel with PLC for the manually opened button of often opening; The drive end of often driving gauge tap is connected with the digital output point of PLC controller; The first branch road, the second branch road and the 3rd branch circuit parallel connection. The present invention, by only using the control of a DO output point often to drive gauge tap, can realize the opening and closing of remote computer and on-the-spot button co-controlling pump valve.
Description
Technical field
The present invention relates to cluster engine field, especially, relate to a kind of unit pump valve control circuit.
Background technology
As shown in Figure 1, relay K M is provided with one group of normally-closed contact S2 to the distribution schematic diagram of the pump valve control circuit of available engine groupWith two groups of normally opened contact S1, S3; Wherein, normally opened contact S1 and unlatching indicator lamp L1 the first branch road in series, stop instructionLamp L2 and normally-closed contact S2 the second branch road in series; The coil of relay K M and PLC normally closed switch S4, manually opened buttonSB2(normally open), manual-lock button SB1(normally off) be followed in series to form the 3rd branch road, and wherein, manually openedButton SB2 is also in parallel with normally opened contact S3, after manually opened button SB2, manual-lock button SB1 series connection, also often opens with PLCSwitch S 5 parallel connections; The first branch road, the second branch road and the 3rd branch circuit parallel connection, wherein normally closed switch S4 is by the Q20.1 of PLC controller(address of concrete output point can according to the situation adjustment of hardware) be controlled, and normal open switch S5 is by the Q20.0 of PLC controllerControl. The PLC control principle drawing of this pump valve control circuit as shown in Figure 2. By computer remote button control pump valve control bit,Pump valve control bit is controlled respectively the opening and closing of pump valve by two DO output point Q20.0 and Q20.1.
When above-mentioned pump valve control circuit is worked:
1, computer remote button is clicked while opening pump valve, pump valve control bit output 1, and Q20.0 is 1 control normal open switchS5 closure, Q20.1 is 0, normally closed switch S4 closure, KM obtain electric, normally opened contact S3 closure, form self-locking; Often open tactilePoint S1 closure, opens indicator lamp L1 bright; Normally-closed contact S2 disconnects, and stops indicator lamp L2 and goes out; Pump work. After pump is opened,If while closing pump with the click of computer remote button, pump valve control bit is output as 0, Q20.1 is 1, normally closed switch S4 disconnection,Q20.0 is 0, and normal open switch S5 disconnects, KM dead electricity, and S1 disconnects, and opens indicator lamp L1 and goes out; S2 closure, closes indicator lampBright; Pump quits work; If while using manual-lock button SB1 to close pump valve, SB1 presses rear disconnection, KM dead electricity, pump stopsWork.
If 2 while opening pump valve with manually opened button SB2, manually opened button SB2 presses, KM obtain electric, normally opened contactS3 closure, forms self-locking, pump work. After pump is opened, if while using manual-lock button SB1 to close pump valve, SB1 pressesRear disconnection, KM dead electricity, pump quits work; If while closing by computer remote button, pump valve control bit is output as 0, Q20.1Be 1, now normally closed switch S4 disconnects, KM dead electricity, and pump quits work.
As from the foregoing, existing pump valve control circuit need use two DO output points (digital output point) minute of PLC controllerDo not control the opening and closing of pump valve, due to the limited amount of the DO output point of PLC controller, in the time that DO output point is inadequate,Use two DO output points to waste, and will affect the computer remote control of other equipment.
Summary of the invention
The object of the invention is to provide one only to need to use the control of a DO output point, also can realize remote computer and on-the-spot buttonThe unit pump valve control circuit of co-controlling, need use two DO outputs of PLC controller to solve existing pump valve control circuitPoint, in the time that DO output point is inadequate, waste DO output point, and will affect the technical problem of computer remote control of other equipment.
For achieving the above object, the invention provides a kind of unit pump valve control circuit, comprise open indicator lamp, close indicator lamp,The manually opened button of often opening, normally closed manual-lock button and by the relay of PLC normally opened contact control pump valve power supply,
Described relay is also provided with and first often makes war, the second normally-closed contact and the 3rd normally opened contact;
Described the second normally-closed contact with described in close indicator lamp the first branch road in series;
Described the 3rd normally opened contact and described unlatching indicator lamp the second branch road in series;
The coil of described relay successively with described normally closed manual-lock button, the described manually opened button of often the opening structure that is in seriesBecome the 3rd branch road; And in described the 3rd branch road, also often to drive gauge tap in parallel with PLC for the described manually opened button of often opening; InstituteState and often open the digital output point control of gauge tap by PLC controller;
Described the first branch road, the second branch road and described the 3rd branch circuit parallel connection.
As a further improvement on the present invention:
The first end that described PLC often drives gauge tap is parallel to the first end of the described manually opened button of often opening, and described PLC is normalThe second end of driving gauge tap is parallel to the second end of the described manually opened button of often opening.
In described the 3rd branch road, the second end of the coil of described relay is series at the first end of described manual-lock button, described inThe first end of manually opened button is serially connected with the second end of described manual-lock button.
The first end of the first end of described the second normally-closed contact and described the 3rd normally opened contact is all connected to the coil of described relayFirst end;
Described in being serially connected with, the second end of described the second normally-closed contact closes the first end of indicator lamp; Second of described the 3rd normally opened contactEnd is serially connected with the first end of described unlatching indicator lamp;
Describedly close the second end of indicator lamp and the second end of described unlatching indicator lamp is all connected to second of described manually opened buttonEnd.
The second end of described manually opened button is connected with the live wire of AC power or the positive pole of dc source, described relayThe first end of coil is connected with the negative pole of the zero line of described AC power or dc source.
The digital output point of described PLC controller is controlled by described PLC controller by computer remote button.
Described relay is also provided with the first normally opened contact, and the first end of described the first normally opened contact is connected with the positive pole of dc source,The second end of described the first normally opened contact is connected with the digital quantity input point of described PLC controller.
The present invention has following beneficial effect:
Unit pump valve control circuit of the present invention, by using a DO output point control PLC often to drive gauge tap, can realize far awayThe opening and closing of journey computer and on-the-spot button co-controlling pump valve, have saved DO output point resource, and circuit structure is simple,Be easy to realize.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage. BelowWith reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing of a part that forms the application is used to provide a further understanding of the present invention, illustrative examples of the present invention andIts explanation is used for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the distribution principle schematic of existing pump valve control circuit;
Fig. 2 is the PLC control principle schematic diagram of existing pump valve control circuit;
Fig. 3 is the distribution principle schematic of the unit pump valve control circuit of the preferred embodiment of the present invention; And
Fig. 4 is the PLC control principle schematic diagram of the unit pump valve control circuit of the preferred embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the present invention can be defined by the claims and coverMultitude of different ways implement.
Referring to Fig. 3, unit pump valve control circuit of the present invention, comprises the hand of opening indicator lamp L3, cutting out indicator lamp L4, often openThe moving SB3 that releases the button, normally closed manual-lock button SB4 and by the relay K M1 of PLC normally opened contact control pump valve power supply,Relay K M1 is also provided with in the DI module that the first normally opened contact S9(receives PLC, embodies the state of pump valve reality), second normalClosed contact S6 and the 3rd normally opened contact S7.
Wherein, the second normally-closed contact S6 with close indicator lamp L4 the first branch road in series. In the present embodiment, concrete connection sideFormula is: the second end of the second normally-closed contact S6 is serially connected with the first end of closing indicator lamp L4.
The 3rd normally opened contact S7 and unlatching indicator lamp L3 the second branch road in series. In the present embodiment, concrete connected mode is:The second end of the 3rd normally opened contact S7 is serially connected with the first end of opening indicator lamp L3.
The manually opened button SB3 that the coil of relay K M1 with normally closed manual-lock button SB4, is often opened the successively formation that is in seriesThe 3rd branch road. In the present embodiment, concrete connected mode is: the second end of the coil of relay K M1 is series at manual-lock buttonThe first end of SB4, the first end of manually opened button SB3 is serially connected with the second end of manual-lock button SB4. And in the 3rd branch road,Also often to open gauge tap S8 in parallel with PLC for the manually opened button SB3 often opening; Concrete connected mode is: often open gauge tap S8First end be parallel to the first end of the manually opened button SB3 often opening, the second end that PLC often opens gauge tap S8 is parallel to oftenThe second end of the manually opened button SB3 opening. This PLC often opens the digital output point (Q20.0) of gauge tap S8 by PLC controllerControl.
The first branch road, the second branch road and the 3rd branch circuit parallel connection. In the present embodiment, concrete connected mode is: the second normally closed touchingThe point first end of S6 and the first end of the 3rd normally opened contact S7 are all connected to the first end of the coil of relay K M1; Close instructionThe second end of the second end of lamp L4 and unlatching indicator lamp L3 is all connected to the second end of manually opened button SB3.
When practical application, the second end of manually opened button SB3 is connected with the live wire of AC power or the positive pole of dc source,The first end of the coil of relay K M1 is connected with the negative pole of the zero line of AC power or dc source.
In the present embodiment, referring to Fig. 4, the digital output point (Q20.0) of PLC controller passes through PLC by computer remote buttonController is controlled. The digital output point (Q20.0) of PLC controller is also connected with the first normally opened contact S9 of relay K M1.
Referring to Fig. 3, Fig. 4; When the present embodiment work, close point four kinds of situation control Kaiyuan City far away, far opens nearly pass, closely opens nearly pass, near(wherein close and refers to the control of computer remote button Kaiyuan City far away, closely opens nearly pass and refer to on-the-spot button control) closed in Kaiyuan City.
1, close Kaiyuan City far away: click computer remote button turn on pump (computer remote button changes to 1 from 0), and first paragraph in Fig. 4,PLC controller detects that the rising edge pump valve control bit set of computer remote button is output as 1(S), the 3rd section of Fig. 4 is defeatedGo out for 1(is because pump valve control bit uses set, now Q20.0 is 1 always), now the PLC in Fig. 3 often drives gauge tapS8 closure (always closed), KM1 obtains electric, and S6 disconnects, and S7 closure is opened indicator lamp L3 bright, and close indicator lamp L4 and go out,The first normally opened contact S9 closure, pump valve is for leaving state, pump work. Computer remote button closes pump, because pump is in operation, and meterCalculation machine remote button is positioned at 1 state always, now clicks computer remote button (computer remote button becomes 0 from 1), figure4 second segments, PLC controller detects a trailing edge of computer remote button, pump valve control bit resets and is output as 0(R),Be that to be output as 0(Q20.0 be 0 to the 3rd section of Fig. 4), now in Fig. 3, PLC often opens gauge tap S8 and disconnects, KM1 dead electricity, S6Closure, S7 disconnects, and opens indicator lamp L3 and goes out, and stops indicator lamp L4 bright, and pump valve quits work.
2, far open nearly pass: click computer remote button turn on pump (computer remote button changes to 1 from 0), first paragraph in Fig. 4,PLC controller detects that the rising edge pump valve control bit set of computer remote button is output as 1(S), the 3rd section of Fig. 4 is defeatedGo out for 1(is because pump valve control bit uses set, now Q20.0 is 1 always), now in Fig. 3, PLC often opens gauge tap S8Closed (always closed), KM1 obtains electric, and S6 disconnects, and S7 closure is opened indicator lamp L3 bright, closes indicator lamp L4 and goes out, firstNormally opened contact S9 closure, pump valve is for leaving state, pump work. On-the-spot button closes pump, in Fig. 3, SB4 pressed, and KM1 dead electricity,S9 disconnects, now second segment pump valve state (becoming 0 from 1) in Fig. 4, and PLC controller detects a decline of pump valve stateReset and be output as 0(R along pump valve control bit), it is 0 that the 3rd section of Fig. 4 is output as 0(Q20.0), S8 disconnects, S6 closure simultaneously,S7 disconnects, and opens indicator lamp L3 and goes out, and stops indicator lamp L4 bright, and pump valve quits work.
3, closely open nearly pass: on-the-spot button turn on pump, in Fig. 3, SB3 is pressed, KM1 obtains electric, S9 closure, first paragraph in Fig. 4,Pump valve state becomes from 0 the rising edge pump valve control bit set that 1, PLC controller detects pump valve state and is output as 1 (S),The 3rd section of Fig. 4 is output as 1(because pump valve control bit uses set, and now Q20.0 is 1 always), now S8 closure in Fig. 3(always closed), the 4th section of Fig. 4 is because pump valve control bit is now 1, and computer remote button also becomes 1, and S6 disconnects simultaneously,S7 closure, opens indicator lamp L3 bright, closes indicator lamp L4 and goes out, pump work. On-the-spot button closes pump, in Fig. 3, SB4 pressed,KM1 dead electricity, S9 disconnects, now second segment pump valve state (becoming 0 from 1) in Fig. 4, PLC controller detects pump valve stateTrailing edge pump valve control bit reset be output as 0(R), it is 0 that the 3rd section of Fig. 4 is output as 0(Q20.0), S8 disconnects, withTime S6 closure, S7 disconnects, and opens indicator lamp L3 and goes out, and stops indicator lamp L4 bright, pump valve quits work.
4, close nearly Kaiyuan City: on-the-spot button turn on pump, in Fig. 3, SB3 is pressed, and relay K M1 obtains electric, and S9 closure, in Fig. 4 theOne section, pump valve state becomes from 0 the rising edge pump valve control bit set that 1, PLC controller detects pump valve state and is output as1 (S), the 3rd section of Fig. 4 is output as 1(because pump valve control bit uses set, now Q20.0 is 1 always), now S8 in Fig. 3Closed (always closed), the 4th section of Fig. 4 is because pump valve control bit is now 1, and computer remote button also becomes 1, simultaneously S6Disconnect, S7 closure, opens indicator lamp L3 bright, closes indicator lamp L4 and goes out, pump work; Computer remote button closes pump, due toNow computer remote button is 1 state, this time point computer remote button (computer remote button becomes 0 from 1), Fig. 4Second segment, PLC controller detects that a trailing edge pump valve control bit reset of computer remote button is output as 0(R), Fig. 4The 3rd section is output as 0(Q20.0 is 0), now in Fig. 3, S8 disconnects, KM1 dead electricity, S6 closure, S7 disconnects, and opens instructionLamp L3 goes out, and closes indicator lamp L4 bright, and pump quits work.
To sum up, unit pump valve control circuit of the present invention, can only by using a DO output point control PLC often to drive gauge tapRealize the opening and closing of remote computer and on-the-spot button co-controlling pump valve, saved DO output point resource, and circuit structureSimply, be easy to realize.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, etc.With replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a unit pump valve control circuit, comprise open indicator lamp (L3), close indicator lamp (L4), often open manually opened byButton (SB3), normally closed manual-lock button (SB4) and by the relay (KM1) of PLC normally opened contact control pump valve power supply,It is characterized in that,
Described relay (KM1) is also provided with the second normally-closed contact (S6) and the 3rd normally opened contact (S7);
Described the second normally-closed contact (S6) with described in close indicator lamp (L4) the first branch road in series;
Described the 3rd normally opened contact (S7) and described unlatching indicator lamp (L3) the second branch road in series;
The coil of described relay (KM1) successively with described normally closed manual-lock button (SB4), described often open manuallyRelease the button (SB3) be in series form the 3rd branch road; And in described the 3rd branch road, the described manually opened button (SB3) of often openingAlso often to drive gauge tap (S8) in parallel with PLC; Described PLC often opens the numeral of gauge tap (S8) by PLC controllerAmount output point control, for according to the break-make of the 3rd branch road described in the digital output point control of described PLC controller; ItsIn, the first end that described PLC often drives gauge tap (S8) is parallel to of the described manually opened button (SB3) of often openingOne end, the second end that described PLC often drives gauge tap (S8) is parallel to the described manually opened button (SB3) of often openingThe second end; Described relay (KM1) is also provided with the first normally opened contact (S9), of described the first normally opened contact (S9)Connect with the positive pole of dc source in one end, the second end of described the first normally opened contact (S9) and the number of described PLC controllerWord amount input point is connected;
Described the first branch road, the second branch road and described the 3rd branch circuit parallel connection.
2. unit pump valve control circuit according to claim 1, is characterized in that,
In described the 3rd branch road, the second end of the coil of described relay (KM1) is series at described manual-lock button (SB4)First end, the first end of described manually opened button (SB3) is serially connected with second of described manual-lock button (SB4)End.
3. unit pump valve control circuit according to claim 2, is characterized in that,
The first end of the first end of described the second normally-closed contact (S6) and described the 3rd normally opened contact (S7) is all connected to instituteState the first end of the coil of relay (KM1);
Described in being serially connected with, the second end of described the second normally-closed contact (S6) closes the first end of indicator lamp (L4); DescribedThe second end of three normally opened contacts (S7) is serially connected with the first end of described unlatching indicator lamp (L3);
Describedly close the second end of indicator lamp (L4) and the second end of described unlatching indicator lamp (L3) is all connected to described handSecond end of moving release the button (SB3).
4. unit pump valve control circuit according to claim 3, is characterized in that,
The second end of described manually opened button (SB3) is connected with the live wire of AC power or the positive pole of dc source, instituteState the first end of coil of relay (KM1) and the negative pole of the zero line of described AC power or dc source is connected.
5. according to the unit pump valve control circuit described in any one in claim 1 to 4, it is characterized in that,
The digital output point of described PLC controller is controlled by described PLC controller by computer remote button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006310.XA CN103116307B (en) | 2013-01-08 | 2013-01-08 | Unit pump valve control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006310.XA CN103116307B (en) | 2013-01-08 | 2013-01-08 | Unit pump valve control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103116307A CN103116307A (en) | 2013-05-22 |
| CN103116307B true CN103116307B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310006310.XA Expired - Fee Related CN103116307B (en) | 2013-01-08 | 2013-01-08 | Unit pump valve control circuit |
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| Country | Link |
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| CN (1) | CN103116307B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5861685A (en) * | 1996-07-24 | 1999-01-19 | Geiger; James E. | Pump and master valve circuit isolator apparatus |
| CN1924743A (en) * | 2005-04-21 | 2007-03-07 | 中国农业科学院农田灌溉研究所 | On-site manual and long-distance remote control method for long-distance remote control system |
| CN202048261U (en) * | 2011-04-14 | 2011-11-23 | 福建龙湖环保科技有限公司 | Electromagnetic valve logic control device |
| CN202612059U (en) * | 2012-05-29 | 2012-12-19 | 灵宝华鑫铜箔有限责任公司 | Automatic controller for pure water pumps for copper foil production water treatment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060076884A (en) * | 2004-12-29 | 2006-07-05 | 두산인프라코어 주식회사 | A software plc control unit of cnc and method thereof |
-
2013
- 2013-01-08 CN CN201310006310.XA patent/CN103116307B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5861685A (en) * | 1996-07-24 | 1999-01-19 | Geiger; James E. | Pump and master valve circuit isolator apparatus |
| CN1924743A (en) * | 2005-04-21 | 2007-03-07 | 中国农业科学院农田灌溉研究所 | On-site manual and long-distance remote control method for long-distance remote control system |
| CN202048261U (en) * | 2011-04-14 | 2011-11-23 | 福建龙湖环保科技有限公司 | Electromagnetic valve logic control device |
| CN202612059U (en) * | 2012-05-29 | 2012-12-19 | 灵宝华鑫铜箔有限责任公司 | Automatic controller for pure water pumps for copper foil production water treatment |
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| Publication number | Publication date |
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| CN103116307A (en) | 2013-05-22 |
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Address after: Zhuzhou province Hunan city Lusong District 412008 Prince Edward Road No. 316 Applicant after: AVIC PST NANFANG GAS TURBINE COMPLETE MANUFACTURING AND INSTALLATION CO.,LTD. Address before: Zhuzhou province Hunan city Lusong District 412008 Prince Edward Road No. 316 Applicant before: ZHUZHOU NANFANG GAS TURBINE PACKAGING AND INSTALLATION Co.,Ltd. |
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