CN104378013A - Motor forward and backward rotation control circuit - Google Patents
Motor forward and backward rotation control circuit Download PDFInfo
- Publication number
- CN104378013A CN104378013A CN201410686607.XA CN201410686607A CN104378013A CN 104378013 A CN104378013 A CN 104378013A CN 201410686607 A CN201410686607 A CN 201410686607A CN 104378013 A CN104378013 A CN 104378013A
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- contactor
- open contact
- normally open
- indicator light
- control circuit
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Abstract
The invention discloses a motor forward and backward rotation control circuit. The motor forward and backward rotation control circuit comprises a stop button, a first alternating current contactor, a second alternating current contactor and a change-over switch. One end of the stop button is connected with the positive electrode of a power source. The other end of the stop button is connected with one end of the change-over switch, one end of a first normally open contact of the first alternating current contactor and one end of a first normally open contact of the second alternating current contactor. The other end of the first normally open contact of the first alternating current contactor is connected with the negative electrode of the power source through a coil of the first alternating current contactor. The other end of the first normally open contact of the second alternating current contactor is connected with the negative electrode of the power source through a coil of the second alternating current contactor. Forward rotation and backward rotation are switched over through the change-over switch, the reliability is high, and the cost is low.
Description
Technical field
The present invention relates to a kind of motor positive inversion control circuit.
Background technology
Motor has been widely used in the various equipment of industrial product.In the occasion of practical application motor, the actual conditions according to application carry out rotating control to motor.For ensureing that any time motor can only forward or reverse, need to use logical interlock circuit to carry out rotating control to motor.The function of logical interlock circuit limits turning to of motor, can not reverse when ensureing that motor rotates forward, and can not rotate forward, avoid the short circuit of three-phase alternating-current supply during motor reversion.
In the prior art, there is multiple positive and reverse rotation control circuit, such as, have Control, have PLC to control.But, for the circuit adopting PLC to control, there is shortcoming below: in industry spot, if there is situations such as equipment interference, controller failures, controller sends closure signal will to the first switch and second switch simultaneously, the disorder of the operating state of forward/reverse interlocking device of motor will be caused like this, the interlocking of the rotating of motor can not be ensured.Further, the cost compare of this control circuit is high.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of motor positive inversion control circuit.The present invention is switched rotating by change over switch, and not only reliability is high, and cost is low again.
Technical scheme of the present invention is as follows:
Motor positive inversion control circuit, comprise stop button, first A.C. contactor, second A.C. contactor and change over switch, one end of stop button is connected with positive source, the other end of stop button respectively with change over switch, one end of first normally open contact of the first A.C. contactor and the first normally open contact of the second A.C. contactor connects, the other end of the first normally open contact of the first A.C. contactor is connected with power cathode by the coil of the first A.C. contactor, the other end of the first normally open contact of the second A.C. contactor is connected with power cathode by the coil of the second A.C. contactor.
The first normally closed interlock of the second A.C. contactor is connected with between first normally open contact and the coil of the first A.C. contactor of the first A.C. contactor.
The first normally closed interlock of the first A.C. contactor is connected with between first normally open contact and the coil of the second A.C. contactor of the second A.C. contactor.
Also comprise the first indicator light, the second indicator light, the 3rd indicator light, second normally closed interlock of described first A.C. contactor, the second normally closed interlock of the second A.C. contactor and the first indicator light are connected between the positive pole of power supply and negative pole, second normally open contact and second indicator light of the first A.C. contactor are connected between the positive pole of power supply and negative pole, and the second normally open contact and the 3rd indicator light of the second A.C. contactor are connected between the positive pole of power supply and negative pole.
Have employed such scheme, change over switch is threaded to a gear, the coil of the first A.C. contactor obtains electric adhesive, and closed first A.C. contactor that makes of the first normally open contact of the first A.C. contactor forms self-locking, the normally open contact being connected to the first A.C. contactor in main circuit closes, and motor obtains electric rotating forward.Second normally open contact of the first A.C. contactor closes, and the second indicator light is lighted.Second normally closed interlock of the first A.C. contactor disconnects, and the first indicator light extinguishes.Change over switch is threaded to two gears, the coil of the second A.C. contactor obtains electric adhesive, closed first A.C. contactor that makes of first normally open contact of the second A.C. contactor forms self-locking, and the normally open contact being connected to the second A.C. contactor in main circuit closes, and motor M obtains electric rotating forward.Second normally open contact of the second A.C. contactor closes, and the 3rd indicator light is lighted.And the mode of this manual switchover does not need to gather outside signal, not only reliability is high, and cost is low again.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
See Fig. 1, motor positive inversion control circuit, comprise stop button SB, first A.C. contactor, second A.C. contactor and change over switch SA, one end of stop button SB is connected with positive source, the other end of stop button SB respectively with change over switch SA, one end of first normally open contact KM11 of the first A.C. contactor and the first normally open contact KM21 of the second A.C. contactor connects, the other end of the first normally open contact KM11 of the first A.C. contactor is connected with power cathode by the coil KM1 of the first A.C. contactor, the other end of the first normally open contact KM21 of the second A.C. contactor is connected with power cathode by the coil KM2 of the second A.C. contactor.The first normally closed interlock KM22 of the second A.C. contactor is connected with between the first normally open contact KM11 and the coil KM1 of the first A.C. contactor of the first A.C. contactor.The first normally closed interlock KM12 of the first A.C. contactor is connected with between the first normally open contact KM21 and the coil KM2 of the second A.C. contactor of the second A.C. contactor.Also comprise the first indicator light HL1, the second indicator light HL2, the 3rd indicator light HL3, second normally closed interlock KM13 of described first A.C. contactor, the second normally closed interlock KM23 of the second A.C. contactor and the first indicator light HL1 are connected between the positive pole of power supply and negative pole, second normally open contact KM14 and the second indicator light HL2 of the first A.C. contactor are connected between the positive pole of power supply and negative pole, and the second normally open contact KM24 and the 3rd indicator light HL2 of the second A.C. contactor are connected between the positive pole of power supply and negative pole.
The course of work of the present invention is: change over switch SA is threaded to a gear, the coil KM1 of the first A.C. contactor obtains electric adhesive, closed first A.C. contactor that makes of first normally open contact KM11 of the first A.C. contactor forms self-locking, the normally open contact being connected to the first A.C. contactor in main circuit closes, and motor M obtains electric rotating forward.Second normally open contact KM14 of the first A.C. contactor closes, and the second indicator light HL2 lights.Second normally closed interlock KM13 of the first A.C. contactor disconnects, and the first indicator light HL1 extinguishes.Change over switch SA is threaded to two gears, the coil KM2 of the second A.C. contactor obtains electric adhesive, closed first A.C. contactor that makes of first normally open contact KM21 of the second A.C. contactor forms self-locking, and the normally open contact being connected to the second A.C. contactor in main circuit closes, and motor M obtains electric rotating forward.Second normally open contact KM24 of the second A.C. contactor closes, and the 3rd indicator light HL3 lights.
Claims (4)
1. motor positive inversion control circuit, it is characterized in that: comprise stop button (SB), first A.C. contactor, second A.C. contactor and change over switch (SA), one end of stop button (SB) is connected with positive source, the other end of stop button (SB) respectively with change over switch (SA), one end of first normally open contact (KM11) of the first A.C. contactor and first normally open contact (KM21) of the second A.C. contactor connects, the other end of first normally open contact (KM11) of the first A.C. contactor is connected with power cathode by the coil (KM1) of the first A.C. contactor, the other end of first normally open contact (KM21) of the second A.C. contactor is connected with power cathode by the coil (KM2) of the second A.C. contactor.
2. motor positive inversion control circuit according to claim 1, is characterized in that: the first normally closed interlock (KM22) being connected with the second A.C. contactor between first normally open contact (KM11) and the coil (KM1) of the first A.C. contactor of the first A.C. contactor.
3. motor positive inversion control circuit according to claim 1, is characterized in that: the first normally closed interlock (KM12) being connected with the first A.C. contactor between first normally open contact (KM21) and the coil (KM2) of the second A.C. contactor of the second A.C. contactor.
4. motor positive inversion control circuit according to claim 1, it is characterized in that: also comprise the first indicator light (HL1), second indicator light (HL2), 3rd indicator light (HL3), second normally closed interlock (KM13) of described first A.C. contactor, second normally closed interlock (KM23) and first indicator light (HL1) of the second A.C. contactor are connected between the positive pole of power supply and negative pole, second normally open contact (KM14) and second indicator light (HL2) of the first A.C. contactor are connected between the positive pole of power supply and negative pole, second normally open contact (KM24) and the 3rd indicator light (HL2) of the second A.C. contactor are connected between the positive pole of power supply and negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410686607.XA CN104378013A (en) | 2014-11-25 | 2014-11-25 | Motor forward and backward rotation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410686607.XA CN104378013A (en) | 2014-11-25 | 2014-11-25 | Motor forward and backward rotation control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104378013A true CN104378013A (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410686607.XA Pending CN104378013A (en) | 2014-11-25 | 2014-11-25 | Motor forward and backward rotation control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104378013A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774007A (en) * | 2017-01-23 | 2017-05-31 | 四川艾德瑞电气有限公司 | The intelligentized control method mechanism of high voltage isolator |
| CN108919743A (en) * | 2018-08-13 | 2018-11-30 | 广东白云学院 | Sunpender motor circuit and control system of platform booms |
-
2014
- 2014-11-25 CN CN201410686607.XA patent/CN104378013A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774007A (en) * | 2017-01-23 | 2017-05-31 | 四川艾德瑞电气有限公司 | The intelligentized control method mechanism of high voltage isolator |
| CN106774007B (en) * | 2017-01-23 | 2019-05-17 | 四川艾德瑞电气有限公司 | The intelligentized control method mechanism of high voltage isolator |
| CN108919743A (en) * | 2018-08-13 | 2018-11-30 | 广东白云学院 | Sunpender motor circuit and control system of platform booms |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150225 |