CN203839288U - Control circuit for improving response speed of electromagnetic contactor - Google Patents
Control circuit for improving response speed of electromagnetic contactor Download PDFInfo
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- CN203839288U CN203839288U CN201320888808.9U CN201320888808U CN203839288U CN 203839288 U CN203839288 U CN 203839288U CN 201320888808 U CN201320888808 U CN 201320888808U CN 203839288 U CN203839288 U CN 203839288U
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- 230000004044 response Effects 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 31
- 230000005669 field effect Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a control circuit for improving the response speed of an electromagnetic contactor. The control circuit is characterized by comprising a duplex winding electromagnetic coil, a controllable follow current circuit unit, a clamping follow current circuit unit, a coil driving circuit unit including semiconductor switch elements, a power supply circuit for quickly establishing a system and an integrated control unit circuit. The utility model designs the control circuit for improving the response speed of the electromagnetic contactor, thereby ensuring that reverse overvoltage is eliminated or limited in a reliable security application range while a contactor product is quickly disconnected after a release order is received.
Description
Technical field
The utility model belongs to low-voltage electrical technical field, specifically just relates to a kind of control circuit that improves electromagnetic contactor response speed.
Background technology
Contactor is a kind of for connecting at a distance, continually and the electrical equipment of disjunction AC and DC main circuit and large volume controlled circuit, its main control object is motor, also can be used as controlling the electrical loads such as electroheat equipment, electric lighting, electric welding machine and capacitor group.Contactor has higher frequency of operation, and the highest frequency of operation can reach 1200 times per hour.The life-span of contactor is very high, is generally millions of mechanical endurance to 10,000,000 times, and electric life is generally hundreds thousand of times to millions of times.In circuit and do not require that contactor has the ability of disjunction short circuit current, when circuit is short-circuited, by the fuse or the circuit breaker that are in series with contactor, protected.
Contactor is divided into high pressure and lv contactor by electric pressure; By electric current kind, be divided into AC and DC contactor; By operating mechanism, be divided into electromagnetic type, fluid pressure type, pneumatic type contactor; By manner of execution, be divided into Direct Action Type and rotary contactor; By the quantity of main contact, be divided into one pole, the two poles of the earth, three utmost points, can have at most the contactor of five utmost points; By contactor, do not move the position of front main contact and be divided into normally open contact or normally closed interlock contactor.
Wherein, electromagnetic treadle produces by apply interchange or direct voltage to solenoid the connecting and disconnecting that magnetic potential is carried out control contactor product main contact conventionally, but because solenoid is strong inductive load, when its dead electricity moment can produce high voltage overshoot and causes magnetic potential to disappear, within therefore need to eliminating high voltage overshoot or high voltage overshoot is limited in to the safe tolerance range of product or system by afterflow.Although yet afterflow has well solved the technical barrier of high voltage overshoot, make the contactor off delay time elongated.The contactor off delay time elongated with contactor product after receiving and releasing order, the off delay time is more short better or be not inconsistent in the constant time lag of the setting technical indicator that under the time, main contact disconnects, and has reduced the fail safe that contactor uses.
Utility model content
The purpose of this utility model is long for existing electromagnetic treadle product action delay and product course of action coil can produce reverse high-tension technological deficiency, design a kind of control circuit that improves electromagnetic treadle response speed, guarantee contactor product receive eliminate when disconnecting fast after releasing order or restriction inverse overvoltage within the scope of safety applications reliably.
Technical scheme
In order to realize above-mentioned technical purpose, a kind of control circuit that improves electromagnetic contactor response speed of the utility model design, it is characterized in that: it comprises double winding solenoid, described double winding solenoid and controllable follow current circuit unit, clamper freewheeling circuit unit is connected in parallel, double winding solenoid with comprise thyristor coil driver unit and be connected, described controllable follow current circuit unit input respectively with Rapid Establishment system power supply circuit output end, Comprehensive Control element circuit output is connected, described comprise thyristor coil driver unit input respectively with Comprehensive Control element circuit output, Rapid Establishment system power supply circuit output end is connected, described Rapid Establishment system power supply circuit output end is connected with Comprehensive Control element circuit input, described comprise thyristor coil driver unit output respectively with clamper freewheeling circuit input, the output of controllable follow current circuit unit is connected.
Described double winding solenoid comprises pull-in winding and protects magnetic coil.
Described controllable follow current circuit unit can be that double winding solenoid builds continuous current circuit with clamper freewheeling circuit unit combination or independent controllable follow current circuit unit B or independent clamper freewheeling circuit unit.
Describedly comprise the thyristor that thyristor coil driver comprises thyristor, field effect transistor, insulated gate bipolar transistor.
Beneficial effect
A kind of control circuit that improves electromagnetic treadle response speed of the utility model design, guarantee contactor product receive eliminate when disconnecting fast after releasing order or restriction inverse overvoltage within the scope of safety applications reliably.
Accompanying drawing explanation
Accompanying drawing 1 is circuit relationships schematic layout pattern of the present utility model.
Accompanying drawing 2 is pull-in winding and controllable follow current circuit in the utility model, clamper freewheeling circuit assembled unit annexation schematic diagram.
Accompanying drawing 3 is in the utility model, to protect magnetic coil and clamper freewheeling circuit annexation schematic diagram.
Accompanying drawing 4 is in the utility model, to comprise thyristor coil driver annexation schematic diagram.
Accompanying drawing 5 is Rapid Establishment system power supply circuit connecting relation schematic diagrames in the utility model.
Accompanying drawing 6 is Comprehensive Control element circuit annexation schematic diagrames in the utility model.
Wherein, 1, controllable follow current circuit and clamper freewheeling circuit assembled unit, 2, pull-in winding, 3, clamper freewheeling circuit, 4, protect magnetic coil, 5, comprise thyristor coil driver, 6, Rapid Establishment system power supply circuit, 7, Comprehensive Control element circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment
As shown in Figure 1, a kind of control circuit that improves electromagnetic contactor response speed, it is characterized in that: it comprises double winding solenoid A, described double winding solenoid A and controllable follow current circuit unit B, clamper freewheeling circuit unit C is connected in parallel, double winding solenoid A with comprise thyristor coil driver cells D and be connected, described controllable follow current circuit unit B input respectively with Rapid Establishment system power supply circuit E output, Comprehensive Control element circuit F output is connected, described comprise thyristor coil driver cells D input respectively with Comprehensive Control element circuit F output, Rapid Establishment system power supply circuit E output is connected, described Rapid Establishment system power supply circuit E output is connected with Comprehensive Control element circuit F input, described comprise thyristor coil driver cells D output respectively with clamper freewheeling circuit C input, the output of controllable follow current circuit unit B is connected.
Further, described double winding solenoid A comprises pull-in winding and protects magnetic coil.
Further, described controllable follow current circuit unit B can be that double winding solenoid A builds continuous current circuit with clamper freewheeling circuit unit C combination or independent controllable follow current circuit unit B or independent clamper freewheeling circuit unit C.
Further, described in, comprise the thyristor that thyristor coil driver D comprises thyristor, field effect transistor, insulated gate bipolar transistor.
As shown in accompanying drawing 2～6, operation principle of the present utility model is to receive after supply power voltage when electromagnetic system, through rectifying and wave-filtering, the system power supply circuit 6 of Rapid Establishment is started working, after certain time-delay, produce stable system works supply voltage, now Comprehensive Control element circuit 7 is started working and is continued and collects, differentiate external control signal and instruction and identify the action message threshold values whether current supply power voltage crosses product simultaneously, when receiving certain product and go code and recognize current supply power voltage and reached product action message voltage, Comprehensive Control element circuit 7 just sends to be opened the driving instruction of pull-in winding 2 and sends the afterflow instruction of connecting pull-in winding 2 simultaneously, comprise instruction conducting semiconductor switch element after conversion and transmission that thyristor coil driver 5 sends Comprehensive Control element circuit 7, afterflow instruction semiconductor element in conducting controllable follow current circuit after the conversion of the chip of overdriving of while pull-in winding 2, continuous current circuit is set up, pull-in winding 2 electric and exist low-impedance continuous current circuit, product to complete to inhale moving, after predetermined pick-delay, the driving instruction that Comprehensive Control element circuit 7 blocks pull-in windings 2, pull-in winding 2 dead electricity are inhaled moving process and are completed.Inhale the moment that moving process finishes, Comprehensive Control element circuit 7 sends connects the driving instruction of protecting magnetic coil 4, same driving instruction is switched on through conversion and the thyristor that transmits rear drive guarantor magnetic coil 4, protecting magnetic coil 4 obtains electric, product contact can maintain on-state, and the so far suction of product is moved and the process that keeps completes.
When Comprehensive Control element circuit 7 receives that really effectively product releases order, if desired product disconnects fast, Comprehensive Control element circuit 7 blocks the driving instruction of protecting magnetic coil 4 at once so, provide the afterflow instruction that disconnects pull-in winding 2 simultaneously, the low-impedance afterflow passage of pull-in winding 2 is disconnected, drive the thyristor of protecting magnetic coil 4 to be also disconnected simultaneously, protect magnetic coil 4 dead electricity, due to inductance characteristic, protect magnetic coil 4 dead electricity moment generation reverse voltages, the clamper freewheeling circuit 3 of now protecting magnetic coil 4 starts as protecting magnetic coil 4 afterflows, under clamper element effect, protect within reverse voltage that magnetic coil 4 produces can be clamped at reliable safe range, the time of afterflow of simultaneously protecting magnetic coil 4 can be limited at short notice, due to the mutual inductance effect in magnetic field, pull-in winding 2 also can produce a reverse potential along with protecting the instant cut-off of magnetic coil 4, and now the Low ESR afterflow passage of pull-in winding 2 has been disconnected, cannot form freewheel current, so the time of afterflow of twin coil all can be very short, electromagnetic field will rapidly disappear, and product main contact will disconnect fast under the effect of reaction spring.If desired product disconnects the clamp voltage value that also can protect by adjusting in magnetic coil 4 continuous current circuits predetermined time and realizes under a certain predetermined time in certain segment limit, thereby reaches adjustable effect of off delay time.
A kind of control circuit that improves electromagnetic treadle response speed of the utility model design, guarantee contactor product receive eliminate when disconnecting fast after releasing order or restriction inverse overvoltage within the scope of safety applications reliably.
Claims (4)
1. a control circuit that improves electromagnetic contactor response speed, it is characterized in that: it comprises double winding solenoid (A), described double winding solenoid (A) and controllable follow current circuit unit (B), clamper freewheeling circuit unit (C) is connected in parallel, double winding solenoid (A) with comprise thyristor coil driver unit (D) and be connected, described controllable follow current circuit unit (B) input respectively with Rapid Establishment system power supply circuit (E) output, Comprehensive Control element circuit (F) output is connected, described comprise thyristor coil driver unit (D) input respectively with Comprehensive Control element circuit (F) output, Rapid Establishment system power supply circuit (E) output is connected, described Rapid Establishment system power supply circuit (E) output is connected with Comprehensive Control element circuit (F) input, described comprise thyristor coil driver unit (D) output respectively with clamper freewheeling circuit (C) input, the output of controllable follow current circuit unit (B) is connected.
2. a kind of control circuit that improves electromagnetic contactor response speed as claimed in claim 1, is characterized in that: described double winding solenoid (A) comprises pull-in winding and protects magnetic coil.
3. a kind of control circuit that improves electromagnetic contactor response speed as claimed in claim 1, is characterized in that: described controllable follow current circuit unit (B) can combine with clamper freewheeling circuit unit (C) or independent controllable follow current circuit unit (B) or independent clamper freewheeling circuit unit (C) is double winding solenoid (A) structure continuous current circuit.
4. a kind of control circuit that improves electromagnetic contactor response speed as claimed in claim 1, is characterized in that: described in comprise the thyristor that thyristor coil driver (D) comprises thyristor, field effect transistor, insulated gate bipolar transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888808.9U CN203839288U (en) | 2013-12-30 | 2013-12-30 | Control circuit for improving response speed of electromagnetic contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888808.9U CN203839288U (en) | 2013-12-30 | 2013-12-30 | Control circuit for improving response speed of electromagnetic contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839288U true CN203839288U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320888808.9U Expired - Fee Related CN203839288U (en) | 2013-12-30 | 2013-12-30 | Control circuit for improving response speed of electromagnetic contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745882A (en) * | 2013-12-30 | 2014-04-23 | 上海良信电器股份有限公司 | Control circuit for improving response speed of electromagnetic contactor |
-
2013
- 2013-12-30 CN CN201320888808.9U patent/CN203839288U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745882A (en) * | 2013-12-30 | 2014-04-23 | 上海良信电器股份有限公司 | Control circuit for improving response speed of electromagnetic contactor |
| CN103745882B (en) * | 2013-12-30 | 2016-08-17 | 上海良信电器股份有限公司 | A kind of control circuit improving electromagnetic contactor response speed |
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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: 20140917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |