CN203574570U - Direct-current motor forward/reverse rotation control circuit - Google Patents
Direct-current motor forward/reverse rotation control circuit Download PDFInfo
- Publication number
- CN203574570U CN203574570U CN201320748626.1U CN201320748626U CN203574570U CN 203574570 U CN203574570 U CN 203574570U CN 201320748626 U CN201320748626 U CN 201320748626U CN 203574570 U CN203574570 U CN 203574570U
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- relay
- switch
- normally
- closed contact
- common port
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Abstract
A direct-current motor forward/reverse rotation control circuit comprises a direct-current power supply, a first relay, a second relay, a first switch, a second switch and a direct-current motor. One end of a coil of the first relay is connected with the first switch, and the other end is connected with a normally closed contact of the first relay and a normally closed contact of the second relay. One end of a coil of the second relay is connected with the second switch, and the other end is connected with the normally closed contact of the first relay and the normally closed contact of the second relay. One end of the direct-current motor is connected with a common end of the first relay and the other end is connected with a common end of the second relay. The normally closed contact and a normally open contact of the first relay, the normally closed contact and a normally open contact of the second relay, the first switch and the second switch are connected with the direct-current power supply. The direct-current motor forward/reverse rotation control circuit is convenient in installation, safe and reliable, and stable in operation.
Description
Technical field
The utility model relates to electric machines control technology field, particularly relates to a kind of DC motor positive and negative rotation control circuit.
Background technology
DC motor positive and negative rotation control is widely used in electric machines control technology field, and traditional method is to adopt two contactors to control respectively the forward and backward motion of motor, need to be at the main contacts of contactor by the both positive and negative polarity commutation of power supply.If two contactor adhesives simultaneously, can cause power supply short circuit, therefore two contactors need to be designed to interlock, cause control circuit complexity, the problems such as Maintenance and Repair difficulty.
Utility model content
Technical problem to be solved in the utility model is, overcomes the above-mentioned defect that prior art exists, and a kind of convenient, safe and reliable, stable DC motor positive and negative rotation control circuit of installing is provided.
The utility model solves the technical scheme that its technical problem adopts: DC motor positive and negative rotation control circuit, comprise DC power supply, the first relay, the second relay, the first switch, second switch and direct current machine, coil one end of described the first relay connects the first switch, and the other end connects the normally-closed contact of the first relay and the normally-closed contact of the second relay; Coil one end of described the second relay connects second switch, and the other end connects the normally-closed contact of the first relay and the normally-closed contact of the second relay; One end of described direct current machine connects the common port of the first relay, the other end connects the common port of the second relay, and the normally-closed contact of the normally-closed contact of described the first relay and normally opened contact, the second relay is connected with DC power supply with normally opened contact, the first switch, second switch.
Further, the normally opened contact of described the first relay is connected with the normally opened contact of the second relay and the positive pole of DC power supply, and the normally-closed contact of described the first relay is connected with the normally-closed contact of the second relay and the negative pole of DC power supply.
Further, the common port of described the first switch and the common port of second switch are connected with the positive pole of DC power supply.
Further, the positive source of described direct current machine connects the common port of the first relay, and power cathode connects the common port of the second relay.
The utility model compared with prior art has following features: adopt two Control direct current machine forward and backwards, can cancel interlock circuit, under the prerequisite that meets identical function, from circuit theory, simplify circuit, reduce failure rate, improve reliability, simultaneously cost-saved.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, circuit theory of the present utility model is further described.
With reference to Fig. 1, DC motor positive and negative rotation control circuit, comprise DC power supply, the first relay K A1, the second relay K A2, the first switch S B1, second switch SB2 and direct current machine M, loop A 1 end of the first relay K A1 connects the NO end of the first switch S B1, and loop A 2 ends connect the normally-closed contact NC of the first relay K A1 and the normally-closed contact NC of the second relay K A2; The loop A 1 of the second relay K A2 connects the NO end of second switch SB2, and loop A 2 ends connect the normally-closed contact NC of the first relay K A1 and the normally-closed contact NC of the second relay K A2; The positive source of direct current machine M connects the common port C of the first relay K A1, and the power cathode of direct current machine M connects the common port C of the second relay K A2; The normally opened contact NO of the normally opened contact NO of the first relay K A1 and the second relay K A2 is connected with the positive pole of DC power supply, and the normally-closed contact NC of the normally-closed contact NC of the first relay K A1 and the second relay K A2 is connected with the negative pole of DC power supply; The common port C of the first switch S B1 is connected with the positive pole of DC power supply with the common port C of second switch SB2.
DC power supply in the present embodiment is 24V.
When the first switch S B1 and second switch SB2 all unclamp, the loop A 1 of the loop A 1 of the first relay K A1 and A2 and the second relay K A2 and A2 dead electricity, DC power supply disconnects at normally opened contact NO and the common port C place of the first relay K A1, direct current machine M stop motion.
When pressing separately the first switch S B1, loop A 1 and the A2 of the first relay K A1 obtain electric adhesive, the normally opened contact NO of the first relay K A1 and common port C connect, normally-closed contact NC after normally opened contact NO and common port C and the second relay K A2 connection of DC power supply after the first relay K A1 connects and common port C are to the positive and negative electrode power supply of direct current machine M, the motion of direct current machine M forward.
When pressing separately second switch SB2, loop A 1 and the A2 of the second relay K A2 obtain electric adhesive, the normally opened contact NO of the second relay K A2 and common port C connect, normally-closed contact NC after normally opened contact NO and common port C and the first relay K A1 connection of DC power supply after the second relay K A2 connects and common port C are to the negative, positive utmost point power supply of direct current machine M, direct current machine M return motion.
When the first switch S B1 and second switch SB2 all press, the loop A 1 of the loop A 1 of the first relay K A1 and A2 and the second relay K A2 and A2 all electric adhesive, normally-closed contact NC and the common port C of its first relay K A1 and the second relay K A2 all disconnect, DC power supply disconnects at normally-closed contact NC and the common port C place of the second relay K A2, the stop motion of direct current machine M motor, and there is not short circuit phenomenon.
Claims (5)
1. DC motor positive and negative rotation control circuit, it is characterized in that, comprise DC power supply, the first relay, the second relay, the first switch, second switch and direct current machine, coil one end of described the first relay connects the first switch, and the other end connects the normally-closed contact of the first relay and the normally-closed contact of the second relay; Coil one end of described the second relay connects second switch, and the other end connects the normally-closed contact of the first relay and the normally-closed contact of the second relay; One end of described direct current machine connects the common port of the first relay, the other end connects the common port of the second relay, and the normally-closed contact of the normally-closed contact of described the first relay and normally opened contact, the second relay is connected with DC power supply with normally opened contact, the first switch, second switch.
2. DC motor positive and negative rotation control circuit as claimed in claim 1, it is characterized in that, the normally opened contact of described the first relay is connected with the normally opened contact of the second relay and the positive pole of DC power supply, and the normally-closed contact of described the first relay is connected with the normally-closed contact of the second relay and the negative pole of DC power supply.
3. DC motor positive and negative rotation control circuit as claimed in claim 1 or 2, is characterized in that, the common port of described the first switch is connected with the positive pole of DC power supply with the common port of second switch.
4. DC motor positive and negative rotation control circuit as claimed in claim 1 or 2, is characterized in that, the positive source of described direct current machine connects the common port of the first relay, and power cathode connects the common port of the second relay.
5. DC motor positive and negative rotation control circuit as claimed in claim 3, is characterized in that, the positive source of described direct current machine connects the common port of the first relay, and power cathode connects the common port of the second relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320748626.1U CN203574570U (en) | 2013-11-25 | 2013-11-25 | Direct-current motor forward/reverse rotation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320748626.1U CN203574570U (en) | 2013-11-25 | 2013-11-25 | Direct-current motor forward/reverse rotation control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574570U true CN203574570U (en) | 2014-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320748626.1U Expired - Fee Related CN203574570U (en) | 2013-11-25 | 2013-11-25 | Direct-current motor forward/reverse rotation control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203574570U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827158A (en) * | 2016-01-29 | 2016-08-03 | 太仓世源金属制品有限公司 | Motor device, equipment and control method |
| CN112468030A (en) * | 2020-10-30 | 2021-03-09 | 国网天津市电力公司 | Control circuit of automatic locking device of electric energy meter |
| CN113945148A (en) * | 2021-10-15 | 2022-01-18 | 衡阳泰豪通信车辆有限公司 | In-place detection circuit and method for vehicle-mounted lifting mechanism |
-
2013
- 2013-11-25 CN CN201320748626.1U patent/CN203574570U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827158A (en) * | 2016-01-29 | 2016-08-03 | 太仓世源金属制品有限公司 | Motor device, equipment and control method |
| CN105827158B (en) * | 2016-01-29 | 2018-09-25 | 太仓世源金属制品有限公司 | A kind of electric machine, equipment and control method |
| CN112468030A (en) * | 2020-10-30 | 2021-03-09 | 国网天津市电力公司 | Control circuit of automatic locking device of electric energy meter |
| CN112468030B (en) * | 2020-10-30 | 2022-10-11 | 国网天津市电力公司 | Control circuit of automatic locking device of electric energy meter |
| CN113945148A (en) * | 2021-10-15 | 2022-01-18 | 衡阳泰豪通信车辆有限公司 | In-place detection circuit and method for vehicle-mounted lifting mechanism |
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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: 20140430 Termination date: 20171125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |