CN102545727A - Automatic control device for motor - Google Patents
Automatic control device for motor Download PDFInfo
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- CN102545727A CN102545727A CN2012100432701A CN201210043270A CN102545727A CN 102545727 A CN102545727 A CN 102545727A CN 2012100432701 A CN2012100432701 A CN 2012100432701A CN 201210043270 A CN201210043270 A CN 201210043270A CN 102545727 A CN102545727 A CN 102545727A
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Abstract
The invention relates to an automatic control device for a motor. Main contacts of a contactor and a thermal relay are connected to a power supply loop of the motor; the normally open contact of a first intermediate relay, a press button TA, the contactor, the normally closed contact of a second intermediate relay and the normally closed contact of the thermal relay are connected in series with the 220-volt power supply loop sequentially; the second normally open contact of the contactor, the thermal relay and a pressurizing indicator lamp are connected in series with the 220-volt power supply loop sequentially; the second normally closed contact of the contactor and a shut-down indicator lamp are connected in series with the 220-volt power supply loop sequentially; a power-loss indicator lamp is connected in the 220-volt power supply loop; the contact P of an electric contact barometer is connected with +24V; the contact P1 is connected in series with a first normally closed contact of the contactor and the first intermediate relay sequentially and then is connected with -24V; and the contact P2 of the electric contact barometer is connected in series with the first normally open contact of the contactor and the second intermediate relay sequentially and then is connected with -24V. The automatic control device for the motor has the characteristics that: the motor can automatically stop during overheat; the contact of the electric contact barometer can be charged instantaneously; and service life is prolonged.
Description
Technical field
The present invention relates to motor operation automatic control equipment, particularly utilize electro connecting pressure gauge when oil gas pressurization motor load reaches setting, supply power through the conversion between three contacts of this Pressure gauge and realize the control device of motor automatic start-stop.
Background technology
Oil gas pressurization motor overheating operation occurs and can cause motor overheating, thereby shortens electrical machinery life.Simultaneously, be connected barometric three electric contacts of electric contact in the pipeline, because energising is long time of contact, regular meeting causes emits arc, causes the damage of electric contact (being the contact).
Summary of the invention
The purpose of this invention is to provide a kind of overtemperature autostop, the barometric electric contact of electric contact is only instantaneous charged motor automatic control device in the motor shutdown process.
The objective of the invention is to realize like this:: a kind of motor automatic control device; Comprise motor YD; The main contacts of contactor JC and thermal relay RJA all is connected in the current supply circuit of motor YD; It is anodal that electric contact air gauge YX, the contact P of said electric contact air gauge YX are connected to direct current 24V, and the contact P1 of electric contact air gauge YX is connected to direct current 24V negative pole after being connected in series the first normally-closed contact JC1 and the first auxiliary relay 1ZJ of contactor JC in order;
The contact P2 of electric contact air gauge YX is connected to direct current 24V negative pole after being connected in series the first normally opened contact JC2 and the second auxiliary relay 2ZJ of contactor JC in order;
The normally opened contact 1ZJ2 of first auxiliary relay is connected in series button TA in order, and contactor JC behind the normally-closed contact 2ZJ1 of second auxiliary relay and the normally-closed contact RJ of said thermal relay RJA, is connected in the 220V current supply circuit;
The second normally opened contact JC3 of contactor JC is connected in the 220V current supply circuit after being connected in series thermal relay RJA and pressurization indicator light HD in order;
After the second normally-closed contact JC4 of contactor JC is connected in series halt indicator LD in order, be connected in the 220V current supply circuit;
Dead electricity indicator light LD1 is connected in the 220V current supply circuit.
The 3rd normally opened contact JC5 that also has test button QA and contactor JC; The two is parallel with one another for the 3rd normally opened contact JC5 of test button QA and contactor JC, and one after the two parallel connection is terminated at the 220V phase line, and the other end after the two parallel connection is connected to the normally opened contact 1ZJ2 of the first auxiliary relay 1ZJ and the node of button TA.
The present invention utilizes automatic equipment transfer contact under external force, in the scope of setting, make wherein between transfer contact P, P1, P2 auto-closing, break off the automatic startup of controlling electric machinery equipment, stop.This control device increases by DC electronic relay (being auxiliary relay) 1ZJ, the 2ZJ of 2 24V (or other electric pressure); Utilize their intermediate conversion closings of contact, break off the actuating coil of control contactor JC, realize the operation principle of automatic starting and stopping motor.
The present invention has following characteristics and advantage:
1, utilize electronics auxiliary relay 1ZJ, 2ZJ coil to connect precision instrument work loop; The electrification time that flows through its P of electric contact, P1, P2 is short; Lean on intermediate contact switch operating electric current, and the electric current of stream P, P1, P2 is little, the contact does not emit arc; Be difficult for sticking, prolonged such transfer contact useful life.
2, this automatics is stable automatically, reliability is high.
3, this device only connects turnover active line and three control lines of oil gas pressurization motor; Wiring is simple, and is easy to utilize, utilizes electrical interlocks principle contactor when starting and stopping, breaking off the actuating coil of corresponding electronic relay; Not fragile, working life is longer.
4, applied range, as factory's numerical-control motor, automatically pumping equipment, automatically pressurize equipment such as motor automatic starting and stop.
5, the present invention be specially adapted to all kinds separate unit motor startup, stop (equipment for using a pair of normally opened contact and normally-closed contact then becomes normally opened contact to the normally-closed contact changing-over, uses this control cabinet not to be affected).Special in the electric contact equipment of precision instrument class, the relay class less like dry-reed relay, electro connecting pressure gauge and contact capacity; As use the alarm integrated control cabinet of New-type electric machine can reduce to flow through the electric current of corresponding contacts; The contact does not emit arc; Be difficult for sticking, prolonged the useful life of such device contact, the stability that improved electric motor starting, stops.This device is integrated in the control cabinet, and installation connection is simple, be convenient to promote.This device provides foundation for manufacturer production design, and investment for trnasforming urban land is little, designs further hommization, and is convenient for installation and maintenance, and it is more reasonable to use.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Fig. 1 illustrates; This motor automatic control device comprises motor YD; The main contacts of contactor JC and thermal relay RJA all is connected in the current supply circuit of motor YD; It is anodal that electric contact air gauge YX, the contact P of electric contact air gauge YX are connected to direct current 24V, and the contact P1 of electric contact air gauge YX is connected to direct current 24V negative pole after being connected in series the first normally-closed contact JC1 and the first auxiliary relay 1ZJ of contactor JC in order; The contact P2 of electric contact air gauge YX is connected to direct current 24V negative pole after being connected in series the first normally opened contact JC2 and the second auxiliary relay 2ZJ of contactor JC in order; The normally opened contact 1ZJ2 of first auxiliary relay is connected in series button TA in order, and contactor JC behind the normally-closed contact 2ZJ1 of second auxiliary relay and the normally-closed contact RJ of said thermal relay RJA, is connected in the 220V current supply circuit; The second normally opened contact JC3 of contactor JC is connected in the 220V current supply circuit after being connected in series thermal relay RJA and pressurization indicator light HD in order; After the second normally-closed contact JC4 of contactor JC is connected in series halt indicator LD in order, be connected in the 220V current supply circuit; Dead electricity indicator light LD1 is connected in the 220V current supply circuit.The 3rd normally opened contact JC5 that also has test button QA and contactor JC; The two is parallel with one another for the 3rd normally opened contact JC5 of test button QA and contactor JC, and one after the two parallel connection is terminated at the 220V phase line, and the other end after the two parallel connection is connected to the normally opened contact 1ZJ2 of the first auxiliary relay 1ZJ and the node of button TA.Among Fig. 1, be serially connected with contactor main contacts JC0 (often opening) and thermal relay main contacts RJ0 (normally closed) among triple line A1, B1, the C1 between each phase line and the motor.
This device capital equipment comprises: 1, comprehensive protector of motor or open one of circuit breaker according to work drive motor Capacity Selection suitable plastics materials sky.2, select each one of suitable contactor, thermal relay according to oil gas pressurization capacity motor.3,24V (12V number or insert the relevant voltage grade as required) electronics auxiliary relay is two.4, power source special is one, is equipped with electronic relay and uses.5, pressurization indication, shutdown indication, three indicator lights of dead electricity indication, the startup-shutdown test button.
Operation principle of the present invention: when the contact P of electric contact air gauge YX and P1 connected, the 220V electric current constituted the work loop through the actuating coil of the first auxiliary relay 1ZJ with the contactor JC first normally-closed contact JC1, the normally opened contact 1ZJ2 closure of the first auxiliary relay 1ZJ; Electric current constitutes the 220V path through normally-closed contact 2ZJ1, the thermal relay normally closed contact RJ of 1ZJ2 closing contact, button TA, contactor coil JC, the second auxiliary relay 2ZJ, and working power is connected in contactor JC action; Electric motor starting; Begin pressurization, in contactor work, contactor JC normally-closed contact JC1 breaks off; Electric contact air gauge P1 dead electricity, the work of pressurization indicator light.Same former when should the barometric air pressure of electric contact reaching setting, the 220V electric current constitutes the work loop through the actuating coil of the second auxiliary relay 2ZJ with the contactor JC second normally opened contact JC2, the normally-closed contact 2ZJ1 disconnection of the second auxiliary relay 2ZJ; Working power is broken off in contactor coil JC dead electricity, contactor JC action, and motor stops; Automatically stop pressurization; In the out-of-work while of contactor, the contactor JC first normally opened contact JC2 breaks off, electric contact air gauge P2 dead electricity.When equipment fault causes over current of motor, motor protective circuit breaker breaks off working power, the indication of dead electricity indicator light indication halt indicator.Just crossing and starting and stopped process; Electric contact P1, P2 are that moment is charged, and through electronics auxiliary relay conversion, when P respectively with P1, when P2 contacts; Pick-up current is all very little, do not emit arc; And connect through contactor normally closed with normally opened contact JC1, JC2 conversion, when P respectively with P1, not charged when P2 breaks off, improved barometric stability of electric contact and useful life.
Claims (2)
1. motor automatic control device; Comprise, motor YD, the main contacts of contactor JC and thermal relay RJA all is connected in the current supply circuit of motor YD; Electric contact air gauge YX; It is characterized in that it is anodal that the contact P of said electric contact air gauge YX is connected to direct current 24V, the contact P1 of electric contact air gauge YX is connected to direct current 24V negative pole after being connected in series the first normally-closed contact JC1 and the first auxiliary relay 1ZJ of contactor JC in order;
The contact P2 of electric contact air gauge YX is connected to direct current 24V negative pole after being connected in series the first normally opened contact JC2 and the second auxiliary relay 2ZJ of contactor JC in order;
The normally opened contact 1ZJ2 of first auxiliary relay is connected in series button TA in order, and contactor JC behind the normally-closed contact 2ZJ1 of second auxiliary relay and the normally-closed contact RJ of said thermal relay RJA, is connected in the 220V current supply circuit;
The second normally opened contact JC3 of contactor JC is connected in the 220V current supply circuit after being connected in series thermal relay RJA and pressurization indicator light HD in order;
After the second normally-closed contact JC4 of contactor JC is connected in series halt indicator LD in order, be connected in the 220V current supply circuit;
Dead electricity indicator light LD1 is connected in the 220V current supply circuit.
2. motor automatic control device according to claim 1 is characterized in that, also has the 3rd normally opened contact JC5 of test button QA and contactor JC; The two is parallel with one another for the 3rd normally opened contact JC5 of test button QA and contactor JC, and one after the two parallel connection is terminated at the 220V phase line, and the other end after the two parallel connection is connected to the normally opened contact 1ZJ2 of the first auxiliary relay 1ZJ and the node of button TA.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100432701A CN102545727A (en) | 2012-02-24 | 2012-02-24 | Automatic control device for motor |
| CN2012103444077A CN102969943A (en) | 2012-02-24 | 2012-09-18 | Motor automatic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100432701A CN102545727A (en) | 2012-02-24 | 2012-02-24 | Automatic control device for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102545727A true CN102545727A (en) | 2012-07-04 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100432701A Pending CN102545727A (en) | 2012-02-24 | 2012-02-24 | Automatic control device for motor |
| CN2012103444077A Pending CN102969943A (en) | 2012-02-24 | 2012-09-18 | Motor automatic control device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103444077A Pending CN102969943A (en) | 2012-02-24 | 2012-09-18 | Motor automatic control device |
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| CN (2) | CN102545727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354346A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor dual protection belt alarm automation control device |
| CN103354347A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor-dual-protection automatic control device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK120386A (en) * | 1986-03-14 | 1987-09-15 | Grundfos Int | ELECTROMAGNETIC ENGINE |
| CN1102451A (en) * | 1993-11-08 | 1995-05-10 | 廖智 | Wireless automatic water pumping controller |
| CN2265028Y (en) * | 1996-02-06 | 1997-10-15 | 刘三翠 | Automatic controller of motor for fire-fighting water pump |
| CN202475325U (en) * | 2012-02-24 | 2012-10-03 | 四川省电力公司达州电业局 | Automatic motor control device |
-
2012
- 2012-02-24 CN CN2012100432701A patent/CN102545727A/en active Pending
- 2012-09-18 CN CN2012103444077A patent/CN102969943A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354346A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor dual protection belt alarm automation control device |
| CN103354347A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor-dual-protection automatic control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102969943A (en) | 2013-03-13 |
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Application publication date: 20120704 |