CN204681079U - A kind of three phase electric machine control circuit - Google Patents
A kind of three phase electric machine control circuit Download PDFInfo
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- CN204681079U CN204681079U CN201520462289.9U CN201520462289U CN204681079U CN 204681079 U CN204681079 U CN 204681079U CN 201520462289 U CN201520462289 U CN 201520462289U CN 204681079 U CN204681079 U CN 204681079U
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- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000819 phase cycle Methods 0.000 description 2
- 206010063493 Premature ageing Diseases 0.000 description 1
- 208000032038 Premature aging Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a kind of three phase electric machine control circuit, comprise relay J, switch S 1, triode V3 and diode D5, one end connecting valve S1 of described relay J, the contact J4 of relay J and switch S 1, the other end of switch S 1 connects the other end and the switch S 2 of the contact J4 of relay J, and the other end of switch S 2 connects the contact J1 of relay J and the A phase of three-phase alternating current.The utility model three phase electric machine control circuit can when there is overload, under-voltage and open phase fault in threephase motor; the working power of timely cut-out motor; to protect motor; and can send chimes of doom reminds user to note; circuit structure is simple simultaneously; components and parts are few, therefore have that cost of manufacture is low, diverse in function and an easy to operate advantage.
Description
Technical field
The utility model relates to a kind of control circuit, specifically a kind of three phase electric machine control circuit.
Background technology
Three phase electric machine is the industrial important machinery of modernization, and it has the power set that the advantage such as efficient, energy-conservation, performance is good, it is little to vibrate, noise is low, the life-span is long, reliability is high, easy to maintenance, starting torque is large is widely used in various plant equipment.But much to the uncomprehending people of circuit when connection three phase electric machine circuit easily by the phase sequence wrong of motor, and wrong is met and is caused three phase electric machine not reach original rated current, motor is exerted oneself not, when electric current is excessive, enamelled wire heating is serious, insulation premature aging, motor coil is finally caused to burn out, therefore know that phase sequence connects timely return and protect the device of motor particularly important, if and motor overload in operation process, the phase current of motor can be caused to exceed the quata, be in overload meeting motor damage for a long time, the most function singleness of control device in the market, only there is simple open phase protection or overload protection function, comprehensive protection cannot be provided to three phase electric machine.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the three phase electric machine control circuit of diverse in function, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of three phase electric machine control circuit, comprise relay J, switch S 1, triode V3 and diode D5, one end connecting valve S1 of described relay J, the contact J4 of relay J and switch S 1, the other end of switch S 1 connects the other end and the switch S 2 of the contact J4 of relay J, the other end of switch S 2 connects the contact J1 of relay J and the A phase of three-phase alternating current, the other end of the contact J1 of relay J connects the port U of three phase electric machine M, the other end of relay J connects the contact K1 of relay K, the other end of the contact K1 of relay K connects the contact J2 of relay J and the B phase of three-phase alternating current, the C of three-phase alternating current is connected the contact J3 of relay J, the other end contact resistance R0 of the contact J3 of relay J and the anode of diode D3, the other end contact resistance R1 of resistance R0, resistance R5, resistance R7, the anode of diode D1, electric capacity C1, electric capacity C2, a stiff end of potentiometer RP, loudspeaker B, the emitter of triode V5 and the port W of three phase electric machine M, the other end of the contact J2 of relay J connects the port V of three phase electric machine M, the emitter of the other end connecting triode V4 of loudspeaker B, the negative electrode contact resistance R2 of diode D1, another stiff end of potentiometer RP and the emitter of triode V1, the negative electrode of diode D3 connects the other end of electric capacity C1, the other end of resistance R1, the anode of diode D2 and the anode of diode D4, the collector electrode of negative electrode connecting triode V1 of diode D4 and the base stage of triode V2, the emitter of triode VT connects the sliding end of potentiometer RP, the collector electrode contact resistance 3 of triode V2 and resistance R4, the other end of the other end contact resistance R3 of resistance R2, the contact J5 of relay J and the emitter of triode V3, the base stage of the other end connecting triode V3 of resistance R4, the other end of the collector electrode contact resistance R5 of triode V3 and resistance R6, the other end of resistance R6 connects the other end of electric capacity C2, the other end of resistance R7 and the base stage of triode V4, the collector electrode contact resistance R8 of triode V4 and the base stage of triode V5, the other end of the other end contact resistance R8 of the contact J5 of relay J, the power supply VCC of relay K, the collector electrode of the other end connecting triode V5 of relay K.
As preferred version of the present utility model: described power supply VCC is 12V direct current.
Compared with prior art; the beneficial effects of the utility model are: the utility model three phase electric machine control circuit can when overload, under-voltage and open phase fault appear in threephase motor; the working power of timely cut-out motor; to protect motor; and can send chimes of doom reminds user to note; simultaneously circuit structure is simple, and components and parts are few, therefore has that cost of manufacture is low, diverse in function and an easy to operate advantage.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of three phase electric machine control circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of three phase electric machine control circuit, comprise relay J, switch S 1, triode V3 and diode D5, one end connecting valve S1 of described relay J, the contact J4 of relay J and switch S 1, the other end of switch S 1 connects the other end and the switch S 2 of the contact J4 of relay J, the other end of switch S 2 connects the contact J1 of relay J and the A phase of three-phase alternating current, the other end of the contact J1 of relay J connects the port U of three phase electric machine M, the other end of relay J connects the contact K1 of relay K, the other end of the contact K1 of relay K connects the contact J2 of relay J and the B phase of three-phase alternating current, the C of three-phase alternating current is connected the contact J3 of relay J, the other end contact resistance R0 of the contact J3 of relay J and the anode of diode D3, the other end contact resistance R1 of resistance R0, resistance R5, resistance R7, the anode of diode D1, electric capacity C1, electric capacity C2, a stiff end of potentiometer RP, loudspeaker B, the emitter of triode V5 and the port W of three phase electric machine M, the other end of the contact J2 of relay J connects the port V of three phase electric machine M, the emitter of the other end connecting triode V4 of loudspeaker B, the negative electrode contact resistance R2 of diode D1, another stiff end of potentiometer RP and the emitter of triode V1, the negative electrode of diode D3 connects the other end of electric capacity C1, the other end of resistance R1, the anode of diode D2 and the anode of diode D4, the collector electrode of negative electrode connecting triode V1 of diode D4 and the base stage of triode V2, the emitter of triode VT connects the sliding end of potentiometer RP, the collector electrode contact resistance 3 of triode V2 and resistance R4, the other end of the other end contact resistance R3 of resistance R2, the contact J5 of relay J and the emitter of triode V3, the base stage of the other end connecting triode V3 of resistance R4, the other end of the collector electrode contact resistance R5 of triode V3 and resistance R6, the other end of resistance R6 connects the other end of electric capacity C2, the other end of resistance R7 and the base stage of triode V4, the collector electrode contact resistance R8 of triode V4 and the base stage of triode V5, the other end of the other end contact resistance R8 of the contact J5 of relay J, the power supply VCC of relay K, the collector electrode of the other end connecting triode V5 of relay K.
Described power supply VCC is 12V direct current.
Operation principle of the present utility model is: in circuit, S1 is starting switch, S2 is shutdown switch, after closed S1, triode V5 saturation conduction, relay K adhesive, its normally open contact K1, K2 all connect, relay J conducting, its contact J1 ~ J3 is all closed, makes motor M starting operation, current detection control circuit energising work simultaneously.When motor runs well, the voltage drop on R0 is less, and triode V1 ~ V4 is all in cut-off state, and V5 maintains conducting state.When motor occurs overload or be under-voltage, R0 both end voltage rises, and makes triode V2 ~ V4 conducting, and V5 ends, and relay K discharges, and its normally opened contact K1, K2 all disconnect, and relay J power-off discharges, and makes motor M power-off stall.The phase if a certain phase voltage is broken, then V1 is by conducting, makes V2 ~ V4 conducting, and V5 ends, K and J discharges, M stall, and loudspeaker B sends chimes of doom simultaneously.The resistance of adjustment potentiometer RP, can change the sensitivity of circuit operation.Circuit can when there is overload, under-voltage and open phase fault in threephase motor; the working power of timely cut-out motor; to protect motor; and can send chimes of doom reminds user to note; circuit structure is simple simultaneously; components and parts are few, therefore have that cost of manufacture is low, diverse in function and an easy to operate advantage.
Claims (2)
1. a three phase electric machine control circuit, comprises relay J, switch S 1, triode V3 and diode D5, it is characterized in that, one end connecting valve S1 of described relay J, the contact J4 of relay J and switch S 1, the other end of switch S 1 connects the other end and the switch S 2 of the contact J4 of relay J, the other end of switch S 2 connects the contact J1 of relay J and the A phase of three-phase alternating current, the other end of the contact J1 of relay J connects the port U of three phase electric machine M, the other end of relay J connects the contact K1 of relay K, the other end of the contact K1 of relay K connects the contact J2 of relay J and the B phase of three-phase alternating current, the C of three-phase alternating current is connected the contact J3 of relay J, the other end contact resistance R0 of the contact J3 of relay J and the anode of diode D3, the other end contact resistance R1 of resistance R0, resistance R5, resistance R7, the anode of diode D1, electric capacity C1, electric capacity C2, a stiff end of potentiometer RP, loudspeaker B, the emitter of triode V5 and the port W of three phase electric machine M, the other end of the contact J2 of relay J connects the port V of three phase electric machine M, the emitter of the other end connecting triode V4 of loudspeaker B, the negative electrode contact resistance R2 of diode D1, another stiff end of potentiometer RP and the emitter of triode V1, the negative electrode of diode D3 connects the other end of electric capacity C1, the other end of resistance R1, the anode of diode D2 and the anode of diode D4, the collector electrode of negative electrode connecting triode V1 of diode D4 and the base stage of triode V2, the emitter of triode VT connects the sliding end of potentiometer RP, the collector electrode contact resistance 3 of triode V2 and resistance R4, the other end of the other end contact resistance R3 of resistance R2, the contact J5 of relay J and the emitter of triode V3, the base stage of the other end connecting triode V3 of resistance R4, the other end of the collector electrode contact resistance R5 of triode V3 and resistance R6, the other end of resistance R6 connects the other end of electric capacity C2, the other end of resistance R7 and the base stage of triode V4, the collector electrode contact resistance R8 of triode V4 and the base stage of triode V5, the other end of the other end contact resistance R8 of the contact J5 of relay J, the power supply VCC of relay K, the collector electrode of the other end connecting triode V5 of relay K.
2. a kind of three phase electric machine control circuit according to claim 1, is characterized in that, described power supply VCC is 12V direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462289.9U CN204681079U (en) | 2015-06-27 | 2015-06-27 | A kind of three phase electric machine control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462289.9U CN204681079U (en) | 2015-06-27 | 2015-06-27 | A kind of three phase electric machine control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204681079U true CN204681079U (en) | 2015-09-30 |
Family
ID=54180747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520462289.9U Expired - Fee Related CN204681079U (en) | 2015-06-27 | 2015-06-27 | A kind of three phase electric machine control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204681079U (en) |
-
2015
- 2015-06-27 CN CN201520462289.9U patent/CN204681079U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20160627 |
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| CF01 | Termination of patent right due to non-payment of annual fee |