CN104410342A - Motor forward and reverse rotation control circuit - Google Patents
Motor forward and reverse rotation control circuit Download PDFInfo
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- CN104410342A CN104410342A CN201410760784.8A CN201410760784A CN104410342A CN 104410342 A CN104410342 A CN 104410342A CN 201410760784 A CN201410760784 A CN 201410760784A CN 104410342 A CN104410342 A CN 104410342A
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- pole relay
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Abstract
The invention discloses a motor forward and reverse control circuit. The motor forward and reverse control circuit comprises a double-pole relay, wherein terminals J1 and J2 of the double-pole relay are respectively connected with the input end the output end of the motor; another terminals J3 and J6 the double-pole relay are sequentially connected with MOS (Metal Oxide Semiconductor) tube Q2, a current-limiting resistor and an on/off control terminal of an MCU (Microprogrammed Control Unit) in series; another terminals J4 and J5 of the double-pole relay are connected with the input end of the double-pole relay; the output end of the double-pole relay is connected with a first terminal J7 of a triode; a second terminal J8 of the triode is respectively connected with the current-limiting resistor and a pull-down resistor; the current-limiting resistor is connected with a control terminal change of the MCU; the pull-down resistor is grounded; the double-pole relay is connected with a free-wheel diode in parallel. With application of the motor forward and reverse control circuit disclosed by the invention, the free-wheel diode is connected between the input end and the output end of the double-pole relay in parallel; when the double-pole relay is turned off, the coil of the double-pole relay generates reverse voltage drop due to action of an electromotive force, and the free-wheel diode refluxes the reverse voltage drop to the coil, so as to avoid a phenomenon of line fault or motor burning.
Description
Technical field
The present invention 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 object of the invention is to, for the problems referred to above, provide a kind of motor positive inversion control circuit.
The technical scheme that the present invention 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.
Beneficial effect of the present invention is: the present invention 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 present invention is further described.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Embodiment: see Fig. 1, a kind of motor positive inversion control circuit of the present invention, 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 present invention 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 present embodiment of the invention, with other motor positive inversion control circuits of the same or similar structure of the present invention, all in scope.
Claims (5)
1. a motor positive inversion control circuit, it is characterized in that: it comprises a two keys relay (RL1), 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), (J6) with a metal-oxide-semiconductor (Q2), the control end (on/off) of one current-limiting resistance (R3) and a MCU is connected successively, the terminals (J4) of this two keys relay (RL1), (J5) be connected with the input of two keys relay (RL1), the output of this two keys relay (RL1) is connected with first terminals (J7) of a triode (Q1), 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 fly-wheel diode (D1).
2. motor positive inversion control circuit according to claim 1, it is characterized in that, first terminals (J9) of described metal-oxide-semiconductor (Q2) are connected with the terminals (J3) of described two keys relay (RL1), (J6), and second terminals (J10) of this metal-oxide-semiconductor (Q2) are connected with described current-limiting resistance (R3).
3. motor positive inversion control circuit according to claim 2, it is characterized in that, this metal-oxide-semiconductor (Q2) is in parallel with a fly-wheel diode (D2) 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 |
|---|---|---|---|
| CN201410760784.8A CN104410342A (en) | 2014-12-12 | 2014-12-12 | Motor forward and reverse rotation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410760784.8A CN104410342A (en) | 2014-12-12 | 2014-12-12 | Motor forward and reverse rotation control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104410342A true CN104410342A (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410760784.8A Pending CN104410342A (en) | 2014-12-12 | 2014-12-12 | Motor forward and reverse rotation control circuit |
Country Status (1)
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| CN (1) | CN104410342A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204565A (en) * | 2015-10-13 | 2015-12-30 | 华北电力大学（保定） | Schedulable load high-grade measuring and controlling terminal |
| CN106130172A (en) * | 2016-07-28 | 2016-11-16 | 福州米立科技有限公司 | Battery supply set emergency standby power accesses protection system |
| CN106787732A (en) * | 2017-02-16 | 2017-05-31 | 深圳怡化电脑股份有限公司 | A kind of two-stage power supply switch controller and electrical equipment |
| CN107070321A (en) * | 2017-04-14 | 2017-08-18 | 泰安泰山高压开关有限公司 | High-power DC motor positive and negative rotation control circuit and control method |
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| US6366041B1 (en) * | 2000-01-24 | 2002-04-02 | Union Switch & Signal, Inc. | Railway switch machine motor control apparatus |
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| CN203930422U (en) * | 2014-06-25 | 2014-11-05 | 深圳黎明镒清图像技术有限公司 | A kind of vehicular Security Inspection Equipments mobile platform auto lock circuit |
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2014
- 2014-12-12 CN CN201410760784.8A patent/CN104410342A/en active Pending
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| US6366041B1 (en) * | 2000-01-24 | 2002-04-02 | Union Switch & Signal, Inc. | Railway switch machine motor control apparatus |
| CN202218186U (en) * | 2011-09-14 | 2012-05-09 | 宁波杜亚机电技术有限公司 | Commutation control device of direct current motor |
| CN202750036U (en) * | 2012-09-11 | 2013-02-20 | 宁波精华电子科技有限公司 | Light adjusting motor control circuit of automotive headlamp |
| CN203883708U (en) * | 2014-05-21 | 2014-10-15 | 中山市东方幕墙工程有限公司 | Double switch control circuit of DC motor driving window shutter to ascend and descend through forward-reverse rotation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204565A (en) * | 2015-10-13 | 2015-12-30 | 华北电力大学（保定） | Schedulable load high-grade measuring and controlling terminal |
| CN106130172A (en) * | 2016-07-28 | 2016-11-16 | 福州米立科技有限公司 | Battery supply set emergency standby power accesses protection system |
| CN106787732A (en) * | 2017-02-16 | 2017-05-31 | 深圳怡化电脑股份有限公司 | A kind of two-stage power supply switch controller and electrical equipment |
| CN106787732B (en) * | 2017-02-16 | 2023-08-08 | 深圳怡化电脑股份有限公司 | Two-stage power switch control device and electrical equipment |
| CN107070321A (en) * | 2017-04-14 | 2017-08-18 | 泰安泰山高压开关有限公司 | High-power DC motor positive and negative rotation control circuit and control method |
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Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |