CN204376789U - A kind of motor positive inversion control circuit - Google Patents
A kind of motor positive inversion control circuit Download PDFInfo
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- CN204376789U CN204376789U CN201420782101.4U CN201420782101U CN204376789U CN 204376789 U CN204376789 U CN 204376789U CN 201420782101 U CN201420782101 U CN 201420782101U CN 204376789 U CN204376789 U CN 204376789U
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Abstract
The utility model discloses a kind of motor positive inversion control circuit, it comprises a two keys relay, the terminals J1 of two keys relay, J2 respectively with the input of motor, output connects, the terminals J3 of two keys relay, J6 and metal-oxide-semiconductor Q2, the control end on/off of current-limiting resistance and MCU connects successively, the terminals J4 of two keys relay, J5 is connected with the input of two keys relay, the output of two keys relay is connected with the first terminals J7 of a triode, second terminals J8 of triode respectively with current-limiting resistance, pull down resistor is connected, current-limiting resistance is connected with the control end chang of MCU, pull down resistor ground connection, two keys relay is in parallel with fly-wheel diode.The utility model is at the input of two keys relay fly-wheel diode in parallel with between output, when two keys relay is closed, the coil of two keys relay produces reverse pressure drop because of the effect of electromotive force, this reverse pressure drop is back in coil by fly-wheel diode, avoids the phenomenon causing line fault or burn-down of electric motor.
Description
Technical field
The utility model relates to Motor Control Field, particularly a kind of motor positive inversion control circuit.
Background technology
Motor refers to that the foundation law of electromagnetic induction realizes the conversion of electric energy or a kind of calutron of transmission.His Main Function produces driving torque, as the power source of electrical appliance or various machinery.
In manufacturing enterprise, because of need of production, some machine operation are under the mode of operation of frequent rotating, but in actual use, when motor positive and inverse changing-over, the contact jaw of the contactor in control circuit can produce electric arc, easily causes phase fault, often occur causing line fault or burn-down of electric motor phenomenon because the rotating of motor switches, cause certain influence to normal production.
Summary of the invention
The purpose of this utility model is, for the problems referred to above, provides a kind of motor positive inversion control circuit.
The technical scheme that the utility model is adopted for achieving the above object is:
A kind of motor positive inversion control circuit, it comprises a double-pole relay R L1, the terminals J1 of this two keys relay, J2 respectively with the input of motor, output connects, the terminals J3 of this two keys relay RL1, a J6 and metal-oxide-semiconductor Q2, the control end on/off of an one current-limiting resistance R3 and MCU connects successively, the terminals J4 of this two keys relay RL1, J5 is connected with the input of two keys relay RL1, the output of this two keys relay RL1 is connected with the first terminals J7 of a triode Q1, the second terminals J8 of this triode Q1 respectively with a current-limiting resistance R1, pull down resistor R2 is connected, this current-limiting resistance R1 is connected with the control end chang of described MCU, this pull down resistor R2 ground connection, described two keys relay RL1 is in parallel with a sustained diode 1.
The first terminals J9 of described metal-oxide-semiconductor Q2 is connected with terminals J3, J6 of described two keys relay RL1, and the second terminals J10 of this metal-oxide-semiconductor Q2 is connected with described current-limiting resistance R3.
This metal-oxide-semiconductor Q2 is in parallel with a sustained diode 2 with the 3rd terminals J11 by its first terminals J9.
The 3rd terminals J12 ground connection of described triode Q1.
The input access 24V voltage of described two keys relay RL1.
The beneficial effects of the utility model are: the utility model is reasonable in design ingenious; structure is simple; small volume; by at the input of two keys relay RL1 fly-wheel diode in parallel with between output; thus when two keys relay RL1 closes, the coil of two keys relay RL1 produces reverse pressure drop because of the effect of electromotive force, and this reverse pressure drop is back in coil by fly-wheel diode; thus the element in protective circuit can not burn out because of reverse pressure drop, avoids the phenomenon causing line fault or burn-down of electric motor.
Below in conjunction with accompanying drawing and embodiment, the utility model is further illustrated.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment: see Fig. 1, a kind of motor positive inversion control circuit of the utility model, it comprises a double-pole relay R L1, the terminals J1 of this two keys relay, J2 respectively with the input of motor, output connects, the terminals J3 of this two keys relay RL1, a J6 and metal-oxide-semiconductor Q2, the control end on/off of an one current-limiting resistance R3 and MCU connects successively, the terminals J4 of this two keys relay RL1, J5 is connected with the input of two keys relay RL1, the output of this two keys relay RL1 is connected with the first terminals J7 of a triode Q1, the second terminals J8 of this triode Q1 respectively with a current-limiting resistance R1, pull down resistor R2 is connected, this current-limiting resistance R1 is connected with the control end chang of described MCU, this pull down resistor R2 ground connection, described two keys relay RL1 is in parallel with a sustained diode 1.
The first terminals J9 of described metal-oxide-semiconductor Q2 is connected with terminals J3, J6 of described two keys relay RL1, and the second terminals J10 of this metal-oxide-semiconductor Q2 is connected with described current-limiting resistance R3.
This metal-oxide-semiconductor Q2 is in parallel with a sustained diode 2 with the 3rd terminals J11 by its first terminals J9.
The 3rd terminals J12 ground connection of described triode Q1.
The input access 24V voltage of described two keys relay RL1.
Can directly draw by Figure of description 1, when a kind of operating state, plug-in strip one end of two keys relay RL1 is connected with terminals J1, and the other end of this plug-in strip is connected with terminals J3, another plug-in strip one end is connected with terminals J2, and the other end of this another plug-in strip is connected with terminals J5; When another operating state, plug-in strip one end of two keys relay RL1 is connected with terminals J1, and the other end of this plug-in strip is connected with terminals J4, and another plug-in strip one end is connected with terminals J2, and the other end of this another plug-in strip is connected with terminals J6.
Can directly be drawn by the electricity symbol of Q1 in Figure of description 1, the first terminals J7 is collector electrode, and the second terminals J8 is base stage, and the 3rd terminals J12 is emitter.
Can directly be drawn by the electricity symbol of Q2 in Figure of description 1, the first terminals J9 is D pole, and the second terminals J10 is G pole, and the 3rd terminals J11 is S pole.
The utility model is reasonable in design ingenious; structure is simple; small volume; by at the input of two keys relay RL1 fly-wheel diode in parallel with between output; thus when two keys relay RL1 closes, the coil of two keys relay RL1 produces reverse pressure drop because of the effect of electromotive force, and this reverse pressure drop is back in coil by fly-wheel diode; thus the element in protective circuit can not burn out because of reverse pressure drop, avoids the phenomenon causing line fault or burn-down of electric motor.
Before electric motor starting, the operating state of two keys relay RL1 is switched, after time delay certain hour, controls machine operation by control end on/off again, can the terminals of available protecting two keys relay RL1 can not because of adhesive moment large circuit and damaging.
The effect of sustained diode 2 is identical with D1, and protection metal-oxide-semiconductor Q2 does not damage because of the reverse pressure drop produced when motor cuts out.
As described in the utility model embodiment, with other motor positive inversion control circuits of the same or similar structure of the utility model, all in the utility model protection range.
Claims (5)
1. a motor positive inversion control circuit, it is characterized in that: it comprises a double-pole relay R L1, the terminals J1 of this two keys relay, J2 respectively with the input of motor, output connects, the terminals J3 of this two keys relay RL1, a J6 and metal-oxide-semiconductor Q2, the control end on/off of an one current-limiting resistance R3 and MCU connects successively, the terminals J4 of this two keys relay RL1, J5 is connected with the input of two keys relay RL1, the output of this two keys relay RL1 is connected with the first terminals J7 of a triode Q1, the second terminals J8 of this triode Q1 respectively with a current-limiting resistance R1, one pull down resistor R2 is connected, this current-limiting resistance R1 is connected with the control end chang of described MCU, this pull down resistor R2 ground connection, described two keys relay RL1 is in parallel with a sustained diode 1.
2. motor positive inversion control circuit according to claim 1, it is characterized in that, the first terminals J9 of described metal-oxide-semiconductor Q2 is connected with terminals J3, J6 of described two keys relay RL1, and the second terminals J10 of this metal-oxide-semiconductor Q2 is connected with described current-limiting resistance R3.
3. motor positive inversion control circuit according to claim 2, is characterized in that, this metal-oxide-semiconductor Q2 is in parallel with a sustained diode 2 with the 3rd terminals J11 by its first terminals J9.
4. motor positive inversion control circuit according to claim 1, is characterized in that, the 3rd terminals J12 ground connection of described triode Q1.
5. motor positive inversion control circuit according to claim 1, is characterized in that, the input access 24V voltage of described two keys relay RL1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420782101.4U CN204376789U (en) | 2014-12-12 | 2014-12-12 | A kind of motor positive inversion control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420782101.4U CN204376789U (en) | 2014-12-12 | 2014-12-12 | A kind of motor positive inversion control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204376789U true CN204376789U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420782101.4U Active CN204376789U (en) | 2014-12-12 | 2014-12-12 | A kind of motor positive inversion control circuit |
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| CN (1) | CN204376789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410342A (en) * | 2014-12-12 | 2015-03-11 | 东莞市精诚电能设备有限公司 | Motor forward and reverse rotation control circuit |
| CN112137668A (en) * | 2020-10-14 | 2020-12-29 | 武汉智瓴医疗科技有限公司 | Control circuit of electric anastomat for preventing secondary use of detachable anastomosis assembly |
-
2014
- 2014-12-12 CN CN201420782101.4U patent/CN204376789U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410342A (en) * | 2014-12-12 | 2015-03-11 | 东莞市精诚电能设备有限公司 | Motor forward and reverse rotation control circuit |
| CN112137668A (en) * | 2020-10-14 | 2020-12-29 | 武汉智瓴医疗科技有限公司 | Control circuit of electric anastomat for preventing secondary use of detachable anastomosis assembly |
| CN112137668B (en) * | 2020-10-14 | 2021-04-16 | 武汉智瓴医疗科技有限公司 | Control circuit of electric anastomat for preventing secondary use of detachable anastomosis assembly |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |