CN203827224U - Power incoming self-starting circuit for electromotor - Google Patents
Power incoming self-starting circuit for electromotor Download PDFInfo
- Publication number
- CN203827224U CN203827224U CN201420239390.3U CN201420239390U CN203827224U CN 203827224 U CN203827224 U CN 203827224U CN 201420239390 U CN201420239390 U CN 201420239390U CN 203827224 U CN203827224 U CN 203827224U
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- CN
- China
- Prior art keywords
- amplifier
- capacitor
- resistance
- incoming call
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 37
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000004821 Contact adhesive Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Landscapes
- Motor And Converter Starters (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The utility model discloses a power incoming self-starting circuit for electromotor, related to the electromotor start-up control technology field. The power incoming self-starting circuit for electromotor comprises a normally-opened relay RLY the normally-opened contactor of which is connected to the starting switch of the electromotor in parallel; the power incoming self-starting circuit also comprises a pulse circuit for producing pulse signals; the pulse circuit produces self-starting pulse signals after the power is coming and transmits the self-starting pulse signals to the relay RLY coil; the coil of the relay RLY closes the normally-opened contactor after receiving the self-starting pulse signals; and the normally-opened contactor of the relay RLY is shortly connected to the starting up switch after being closed to start up the electromotor.
Description
Technical field
The utility model relates to motor start-up control technology field, is specifically related to a kind of motor incoming call from opening circuit.
Background technology
As shown in Figure 1, existing motor start-up circuit generally includes an A.C. contactor and a starting switch QA who often opens, the main contacts JC of this A.C. contactor is communicated with motor M and power supply, the normally opened contact JC1 of this A.C. contactor is connected between live wire and zero line after connecting with the coil KM of this A.C. contactor, and the normally opened contact JC1 of this A.C. contactor is also in parallel with described starting switch QA.After energising, need starting switch QA described in manual closing, make the coil KM energising of A.C. contactor, then rely on the "on" position of the normally opened contact JC1 keeping coil KM of A.C. contactor, the process of starting switch QA is equivalent to provide a pulse signal for actuating motor described in manual closing.In the motor M course of work, after power-off, even if the motor M that sends a telegram here again also can not start automatically, if need to restart motor M, manual closing starting switch QA, cumbersome again.
Summary of the invention
For the problems referred to above of prior art, the utility model provides a kind of motor simple in structure, with low cost incoming call from opening circuit, when it can send a telegram here after electric motor circuit breaking again without the automatic actuating motor of manual operation.
For achieving the above object, the utility model provides following technical scheme.
Motor incoming call is from opening circuit, comprise an open type relay R LY, the normally opened contact of relay R LY is in parallel with the starting switch of motor M, described incoming call also comprises the impulse circuit for generation of starting impulse signal from opening circuit, described impulse circuit incoming call produce afterwards from open pulse signal and by this from the coil that opens pulse signal and pass to relay R LY, the coil of relay R LY receives this and certainly opens its normally opened contact of adhesive after pulse signal, the normally opened contact of relay R LY by adhesive after described in short circuit starting switch with actuating motor M.
Wherein, described impulse circuit comprises triode Q1, amplifier U1, amplifier U2, amplifier U3, capacitor C 1, capacitor C 2, resistance R 1 and resistance R 2, after resistance R 1 and capacitor C 1 series connection, be connected between VDD-to-VSS, after resistance R 2 and capacitor C 2 series connection, be also connected between VDD-to-VSS, wherein capacitor C 1 and capacitor C 2 ground connection, the normal phase input end of amplifier U1 is connected in the contact of resistance R 1 and capacitor C 1, the inverting input of amplifier U2 is connected in the contact of resistance R 2 and capacitor C 2, the inverting input of amplifier U1, the normal phase input end of the normal phase input end of amplifier U2 and amplifier U3 all meets reference voltage V ref, the output of the output of amplifier U1 and amplifier U2 is all connected in the inverting input of amplifier U3, the reverse inter-input-ing ending grounding of amplifier U3, the base stage of the output termination triode Q1 of amplifier U3, the collector and emitter of triode Q1 and the coil of described relay R LY are connected between VDD-to-VSS after connecting, capacitor C 1 equates with the capacitance of capacitor C 2, resistance R 1 is unequal with the resistance value of resistance R 2.
Wherein, resistance R 1 is 2:1 with the proportioning of the resistance value of resistance R 2.
Wherein, also comprise for controlling described incoming call from closing from breakdown of opening circuit effectively or lost efficacy, close and be arranged between the coil and power supply of described relay R LY from breakdown, the coil of described relay R LY is by closing and connect power supply from breakdown.
Wherein, also comprise diode D1 and diode D2, the output of the output of amplifier U1 and amplifier U2 is connected with the inverting input of amplifier U3 with diode D2 via diode D1 respectively.
The beneficial effects of the utility model are: produce after incoming call by impulse circuit from opening pulse signal, from the normally opened contact adhesive of opening pulse enable signal relay, due to the normally opened contact of relay and the starting switch of motor in parallel, the process of normally opened contact adhesive is equivalent to the process of manual closing starting switch, simulated the process that manual closing starting switch carrys out actuating motor, thereby realize the automatic startup of motor after incoming call, automatically actuated process is without manual operation, convenient and swift.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of motor start-up circuit.
Fig. 2 is that motor incoming call of the present utility model is from the circuit theory diagrams that open circuit.
Reference numeral comprises: impulse circuit 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As depicted in figs. 1 and 2, motor incoming call of the present utility model is from opening circuit, comprise an open type relay R LY, the normally opened contact m of this relay R LY and p are in parallel with the starting switch QA of described motor M, motor incoming call of the present utility model also comprises the impulse circuit 1 for generation of starting impulse signal from opening circuit, impulse circuit 1 incoming call produce afterwards from open pulse signal and by this from the coil that opens pulse signal and pass to relay R LY, the coil of relay R LY receives this and certainly opens its normally opened contact of adhesive after pulse signal, the normally opened contact of relay R LY by adhesive after short circuit starting switch QA, starting switch QA by short circuit after actuating motor M.What impulse circuit 1 produced open pulse signal certainly impels relay R LY adhesive its normally opened contact m and p, due to normally opened contact m and p in parallel with starting switch QA, normally opened contact m and p are just equivalent to starting switch QA closure by adhesive, thereby motor M is started, this start-up course of motor M is without manual intervention, automatically carry out afterwards at incoming call, while having avoided sending a telegram here again after power-off, need again manual closing starting switch QA to carry out the trouble of actuating motor M.
The particular circuit configurations of impulse circuit 1 as shown in Figure 2.Wherein capacitor C 1 equates with the capacitance of capacitor C 2, and resistance R 1 is 2:1 with the proportioning of the resistance value of resistance R 2, its objective is and makes the charging current of capacitor C 1 and capacitor C 2 not identical, so that capacitor C 1 is not identical with capacitor C 2 charging rates.After incoming call, capacitor C 1 and capacitor C 2 all start charging, because the voltage of capacitor C 1 and capacitor C 2 can not suddenly change, the voltage of the normal phase input end of amplifier U1 and amplifier U2 reverse input end is all lower than reference voltage V ref, therefore the output of amplifier U1 is via playing the diode D1 of buffer action to the inverting input output low level of amplifier U3, the output of amplifier U2 is via playing the diode D2 of buffer action to the inverting input output high level of amplifier U3, now the level of the inverting input of amplifier U3 is higher than the reference voltage V ref of its normal phase input end, the output output low level of amplifier U3, triode Q1 cut-off.Because the resistance value of resistance R 1 is greater than the resistance value of resistance R 2, so the charging current of capacitor C 1 is less than the charging current of capacitor C 2, the charging rate of capacitor C 2 is faster than the charging rate of capacitor C 1, so, in the time that the voltage at capacitor C 2 two ends is elevated to the level that is greater than reference voltage V ref, the level of the inverting input of amplifier U2 is greater than reference voltage V ref, now, the equal output low level of output of amplifier U1 and amplifier U2, the level of the inverting input of amplifier U3 is lower than the reference voltage V ref of its normal phase input end, the output output high level of amplifier U3, triode Q1 conducting, the coil electricity of relay R LY, its normally opened contact m and p are by adhesive, the coil KM energising of A.C. contactor, its normally opened contact JC1 and main contacts JC are all by adhesive, motor M starts.Capacitor C 1 continues charging, in the time that the voltage at capacitor C 1 two ends is also elevated to the level that is greater than reference voltage V ref, the level of the normal phase input end of amplifier U1 is greater than reference voltage V ref, now, the output output high level of amplifier U1, so, the level of the inverting input of amplifier U3 is returned to again high level, amplifier U3 is output low level again, triode Q1 cut-off, relay R LY is disconnected again by normally opened contact m and the p of adhesive, but the normally opened contact JC1 of A.C. contactor maintains attracting state, ensure that its coil KM maintains "on" position, therefore its main contacts JC also maintains attracting state, motor M normally works.
As shown in Figure 2, motor of the present utility model incoming call from open circuit also comprise for control motor incoming call of the present utility model from open circuit effectively or lost efficacy close AUTO from breakdown, only, in the time that breakdown closes AUTO in closure state, motor incoming call of the present utility model could be at incoming call automatic actuating motor M afterwards from opening circuit.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection range; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (5)
1. motor incoming call is from opening circuit, it is characterized in that: comprise an open type relay R LY, the normally opened contact of relay R LY is in parallel with the starting switch of motor M, described incoming call also comprises the impulse circuit for generation of starting impulse signal from opening circuit, described impulse circuit incoming call produce afterwards from open pulse signal and by this from the coil that opens pulse signal and pass to relay R LY, the coil of relay R LY receives this and certainly opens its normally opened contact of adhesive after pulse signal, the normally opened contact of relay R LY by adhesive after described in short circuit starting switch with actuating motor M.
2. motor incoming call according to claim 1 is from opening circuit, it is characterized in that: described impulse circuit comprises triode Q1, amplifier U1, amplifier U2, amplifier U3, capacitor C 1, capacitor C 2, resistance R 1 and resistance R 2, after resistance R 1 and capacitor C 1 series connection, be connected between VDD-to-VSS, after resistance R 2 and capacitor C 2 series connection, be also connected between VDD-to-VSS, wherein capacitor C 1 and capacitor C 2 ground connection, the normal phase input end of amplifier U1 is connected in the contact of resistance R 1 and capacitor C 1, the inverting input of amplifier U2 is connected in the contact of resistance R 2 and capacitor C 2, the inverting input of amplifier U1, the normal phase input end of the normal phase input end of amplifier U2 and amplifier U3 all meets reference voltage V ref, the output of the output of amplifier U1 and amplifier U2 is all connected in the inverting input of amplifier U3, the reverse inter-input-ing ending grounding of amplifier U3, the base stage of the output termination triode Q1 of amplifier U3, the collector and emitter of triode Q1 and the coil of described relay R LY are connected between VDD-to-VSS after connecting, capacitor C 1 equates with the capacitance of capacitor C 2, resistance R 1 is unequal with the resistance value of resistance R 2.
3. motor incoming call according to claim 2, from opening circuit, is characterized in that: resistance R 1 is 2:1 with the proportioning of the resistance value of resistance R 2.
4. motor incoming call according to claim 2 is from opening circuit, it is characterized in that: also comprise for controlling described incoming call from closing from breakdown of opening circuit effectively or lost efficacy, close and be arranged between the coil and power supply of described relay R LY from breakdown, the coil of described relay R LY is by closing and connect power supply from breakdown.
5. motor incoming call according to claim 2, from opening circuit, is characterized in that: also comprise diode D1 and diode D2, the output of the output of amplifier U1 and amplifier U2 is connected with the inverting input of amplifier U3 with diode D2 via diode D1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239390.3U CN203827224U (en) | 2014-05-12 | 2014-05-12 | Power incoming self-starting circuit for electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239390.3U CN203827224U (en) | 2014-05-12 | 2014-05-12 | Power incoming self-starting circuit for electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203827224U true CN203827224U (en) | 2014-09-10 |
Family
ID=51482683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420239390.3U Expired - Lifetime CN203827224U (en) | 2014-05-12 | 2014-05-12 | Power incoming self-starting circuit for electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203827224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294425A (en) * | 2017-07-12 | 2017-10-24 | 承德电智尚节能科技有限公司 | A kind of three phase electric machine controller detected with induced voltage |
-
2014
- 2014-05-12 CN CN201420239390.3U patent/CN203827224U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294425A (en) * | 2017-07-12 | 2017-10-24 | 承德电智尚节能科技有限公司 | A kind of three phase electric machine controller detected with induced voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |
|
| CX01 | Expiry of patent term |