CN201336250Y - Control device of permanent magnet contactor - Google Patents
Control device of permanent magnet contactor Download PDFInfo
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- CN201336250Y CN201336250Y CNU2009200381351U CN200920038135U CN201336250Y CN 201336250 Y CN201336250 Y CN 201336250Y CN U2009200381351 U CNU2009200381351 U CN U2009200381351U CN 200920038135 U CN200920038135 U CN 200920038135U CN 201336250 Y CN201336250 Y CN 201336250Y
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Abstract
The utility model discloses a control device of a permanent magnet contactor, which belongs to the technical field of contactor manufacture. The control device of the utility model is formed by connecting a filter module (1), an overvoltage protection module (2), a rectification module (3), a delay-off operation module (4), a low-voltage protection module (5), a power-off signal judgment module (6) and an execution module (7) with auxiliary contacts in series and in sequence. The technical scheme of the utility model is that a capacitor in series connection with a coil is in parallel connection with a normally closed auxiliary contact through the execution module (7) with the auxiliary contacts; during normal pull-in, the main loop is formed by the coil and the auxiliary contacts; during in-place closing, the auxiliary contacts are opened, and the charging circuit charges the capacitor through the coil. The utility model can effectively achieve closing purpose for the permanent magnet contactor with a biggish rated current and further reduce the volume of the brake-off capacitor, thereby realizing the miniaturization of the volume of the control device.
Description
Technical field
The utility model relates to a kind of control device of permanent magnet contactor, and especially a kind of control device with permanent magnet contactor of auxiliary contact belongs to the technical field that contactor is made.
Background technology
Permanent magnet contactor has advantages such as energy-conservation and noise reduction, has been subjected to the extensive concern of researcher and contactor manufacturer.The research of permanent magnet contactor mainly concentrates on permanent-magnet manipulating mechanism and the control method.According to the difference of mechanism when the sub-switching operation, permanent-magnet manipulating mechanism can be divided into monostable and two kinds of forms of bistable state.Be divided into unicoil formula and twin coil formula from the coil number.From the contour structures aspect, be divided into square structure (or two E type or U type structure) and cylindrical structural.From magnetic circuit, can be divided into parallel circuits and series circuit.
On control method, comprise:
1, the series connection of coil and electric capacity.By the charging of coil to electric capacity, coil generation magnetomotive force is consistent with the permanent magnetism magnetomotive force on the one hand, finishes closing operation.The stroke of the contactor of big current class is bigger, because series system, the waveform of electric current is an exponential damping, thereby the capacitance of this kind scheme chooses and want big, to prolong die-away time.
2, coil directly supplies normal value voltage or high voltage more, and after closing operation was finished, for little electric current, the magnetomotive force that magnetomotive force that is produced by coil current and permanent magnetism produce was kept attracting state jointly to coil.This scheme still need provide certain electric current at permanent magnet contactor duration of work coil.
In addition, also comprise other Based Intelligent Control scheme, as the generation pwm pulse coil voltage is carried out copped wave and regulate control methods such as dynamic characteristic.
In first kind of control device of being made up of coil and capacitances in series, for the permanent magnet contactor of bigger specified current class, electric capacity is chosen bigger, is unfavorable for further applying at present.
Summary of the invention
Technical problem: the purpose of this utility model is the shortcoming at above-mentioned technology, a kind of control device with permanent magnet contactor of auxiliary contact is provided, with electric capacity that coil is connected on normally closed auxiliary contact in parallel, during normal adhesive, major loop is made of coil and auxiliary contact, after combined floodgate put in place, auxiliary contact were opened, and charge circuit charges to electric capacity by coil.
Technical scheme: for achieving the above object, the utility model adopts following technical scheme:
The control device of permanent magnet contactor of the present utility model is by filtration module, overvoltage protective module, rectification module, delay cut-off module, under-voltage protection module, power-off signal judge module with have the auxiliary contact Executive Module and be composed in series successively.
The control device of permanent magnet contactor of the present utility model; the under-voltage protection module is by the 5th diode D5; the 3rd capacitor C 3; the 4th capacitor C 4; the 4th resistance R 4; the 5th resistance R 5; the 8th voltage stabilizing didoe D8; the 2nd VMOS pipe Q2 and the tenth diode D10 form; wherein the anode of the 5th diode D5 respectively with the positive output end of delay cut-off module; the positive input terminal of power-off signal judge module connects; the negative electrode of the 5th diode D5 respectively with an end of the 3rd capacitor C 3; one end of the 4th resistance R 4 links to each other; the other end of the 4th resistance R 4 and 5 series connection of the 5th resistance R; the other end of the 3rd capacitor C 3 respectively with the negative output terminal of delay cut-off module; the anode of the tenth diode D10 connects; the negative electrode of the tenth diode D10 is managed the drain electrode of Q2 respectively with the 2nd VMOS; the negative input end of power-off signal judge module connects, the 5th resistance R 5; the 4th capacitor C 4; the 8th voltage stabilizing didoe D8 is connected in parallel between the grid and source electrode of the 2nd VMOS pipe Q2.
The control device of permanent magnet contactor of the present utility model, the power-off signal judge module is made up of the 6th diode D6, the 7th diode D7, the 9th voltage stabilizing didoe D9, the 6th resistance R 6, the 7th resistance R 7, the 9th resistance R 9, the 5th capacitor C 5 and the first triode Q1, wherein the anode of the 7th diode D7 is connected with the positive output end of under-voltage module, the anode of the 6th diode D6 respectively, and the negative electrode of the 6th diode D6 is connected with the first input end with auxiliary contact Executive Module; The negative electrode of the 7th diode D7 respectively with an end of the 5th capacitor C 5, one end of the 6th resistance R 6 connects, the other end of the 5th capacitor C 5 respectively with the negative input end of under-voltage module, one end of the 7th resistance R 7 connects, the other end of the 7th resistance R 7 respectively with the other end of the 6th resistance R 6, the base stage of the first triode Q1 connects, the emitter of the first triode Q1 is connected the back and is connected with the four-input terminal with auxiliary contact Executive Module with the anode of the 9th voltage stabilizing didoe D9, the negative electrode of the 9th voltage stabilizing didoe D9 respectively with an end of the 9th resistance R 9, the collector electrode of the first triode Q1, the 3rd input that has in the auxiliary contact Executive Module connects, and the other end of the 9th resistance R 9 is connected with second input in having the auxiliary contact Executive Module.
The control device of permanent magnet contactor of the present utility model, the auxiliary contact Executive Module is by the 8th resistance R 8, the 6th capacitor C 6, coil J, the 11 diode D11, the 3rd VMOS pipe Q3 and auxiliary contact J2 form, wherein an end of the 8th resistance R 8 respectively with first output of power-off signal judge module, the end of coil J connects, the other end of the 8th resistance R 8 is managed the drain electrode of Q3 respectively with the 3rd VMOS, the negative electrode of the 11 diode D11 connects, the grid of the 3rd VMOS pipe Q3 is connected with the 3rd output of power-off signal judge module, after the source electrode of the anode of the 11 diode D11 and the 3rd VMOS pipe Q3 is connected respectively with the 4th output of power-off signal judge module, one end of the 6th capacitor C 6 connects, the other end of the 6th capacitor C 6 is connected the back and is connected with second output of power-off signal judge module with the other end of contactor coil J, auxiliary contact J2 is in parallel with capacitor C 6.
Beneficial effect: the utility model is designed for the permanent magnetism type contactor of low voltage switchgear, control appliance and motor starting.Permanent magnet contactor is at run duration, and coil does not have the phenomenon of burning, and voltage ripple of power network, contact chattering can not take place.Under under-voltage condition, cut off load automatically, realize under-voltage protection.Can escape the moment rolling electric fault of electrical network by the delay cut-off function.
Permanent magnet contactor deciliter process with auxiliary contact of the present utility model can effectively realize the purpose of closing a floodgate for the permanent magnet contactor with big rated current; Adopt the open/close method of auxiliary contact further to reduce the volume of separating brake electric capacity, thereby realized the miniaturization of control device volume.
Description of drawings
Fig. 1 is a control device block diagram of the present utility model.
Wherein have: filtration module 1, overvoltage protective module 2, rectification module 3, delay cut-off module 4, under-voltage protection module 5, power-off signal judge module 6 and have auxiliary contact Executive Module 7 and form.
Fig. 2 is the control circuit schematic diagram that is suitable for permanent magnet contactor.
In the above circuit external AC power supply AC is arranged, stop button TA, starting button QA, permanent magnet contactor auxiliary contact J1 and J2, piezo-resistance R2, diode D1～D7, D10, D11, voltage stabilizing didoe D8～D9, capacitor C 1～C6, resistance R 1, R3～R9, triode Q1, VMOS manages Q2, Q3, contactor coil J.
Embodiment
As shown in Figure 1; the control device of permanent magnet contactor of the present utility model is by filtration module 1, overvoltage protective module 2, rectification module 3, delay cut-off module 4, under-voltage protection module 5, power-off signal judge module 6 with have auxiliary contact Executive Module 7 and be composed in series successively.
As shown in Figure 2, control device circuit execution mode of the present utility model.
The control device of permanent magnet contactor of the present utility model, filtration module 1 is composed in series by first resistance R 1 and first capacitor C 1;
The control device of permanent magnet contactor of the present utility model, overvoltage protective module 2 is made up of piezo-resistance R2;
The control device of permanent magnet contactor of the present utility model, rectification module 3 also is made of behind the string earlier in twos the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4.
The control device of permanent magnet contactor of the present utility model, delay cut-off module 4 the 3rd resistance R 3 and second capacitor C 2 are composed in series.
The control device of permanent magnet contactor of the present utility model; under-voltage protection module 5 is by the 5th diode D5; the 3rd capacitor C 3; the 4th capacitor C 4; the 4th resistance R 4; the 5th resistance R 5; the 8th voltage stabilizing didoe D8; the 2nd VMOS pipe Q2 and the tenth diode D10 form; wherein the anode of the 5th diode D5 respectively with the positive output end of delay cut-off module; the positive input terminal of power-off signal judge module connects; the negative electrode of the 5th diode D5 respectively with an end of the 3rd capacitor C 3; one end of the 4th resistance R 4 links to each other; the other end of the 4th resistance R 4 and 5 series connection of the 5th resistance R; the other end of the 3rd capacitor C 3 respectively with the negative output terminal of delay cut-off module; the anode of the tenth diode D10 connects; the negative electrode of the tenth diode D10 is managed the drain electrode of Q2 respectively with the 2nd VMOS; the negative input end of power-off signal judge module connects, the 5th resistance R 5; the 4th capacitor C 4; the 8th voltage stabilizing didoe D8 is connected in parallel between the grid and source electrode of the 2nd VMOS pipe Q2.
The control device of permanent magnet contactor of the present utility model, power-off signal judge module 6 is made up of the 6th diode D6, the 7th diode D7, the 9th voltage stabilizing didoe D9, the 6th resistance R 6, the 7th resistance R 7, the 9th resistance R 9, the 5th capacitor C 5 and the first triode Q1, wherein the anode of the 7th diode D7 is connected with the positive output end of under-voltage module, the anode of the 6th diode D6 respectively, and the negative electrode of the 6th diode D6 is connected with the first input end with auxiliary contact Executive Module; The negative electrode of the 7th diode D7 respectively with an end of the 5th capacitor C 5, one end of the 6th resistance R 6 connects, the other end of the 5th capacitor C 5 respectively with the negative input end of under-voltage module, one end of the 7th resistance R 7 connects, the other end of the 7th resistance R 7 respectively with the other end of the 6th resistance R 6, the base stage of the first triode Q1 connects, the emitter of the first triode Q1 is connected the back and is connected with the four-input terminal with auxiliary contact Executive Module with the anode of the 9th voltage stabilizing didoe D9, the negative electrode of the 9th voltage stabilizing didoe D9 respectively with an end of the 9th resistance R 9, the collector electrode of the first triode Q1, the 3rd input that has in the auxiliary contact Executive Module connects, and the other end of the 9th resistance R 9 is connected with second input in having the auxiliary contact Executive Module.
The control device of permanent magnet contactor of the present utility model, auxiliary contact Executive Module 7 is by the 8th resistance R 8, the 6th capacitor C 6, coil J, the 11 diode D11, the 3rd VMOS pipe Q3 and auxiliary contact J2 form, wherein an end of the 8th resistance R 8 respectively with first output of power-off signal judge module, the end of coil J connects, the other end of the 8th resistance R 8 is managed the drain electrode of Q3 respectively with the 3rd VMOS, the negative electrode of the 11 diode D11 connects, the grid of the 3rd VMOS pipe Q3 is connected with the 3rd output of power-off signal judge module, after the source electrode of the anode of the 11 diode D11 and the 3rd VMOS pipe Q3 is connected respectively with the 4th output of power-off signal judge module, one end of the 6th capacitor C 6 connects, the other end of the 6th capacitor C 6 is connected the back and is connected with second output of power-off signal judge module with the other end of coil J, auxiliary contact J2 is in parallel with capacitor C 6.
When the control supply voltage in 85%～110% scope, press starting button QA, power supply at first is connected into filtering through first resistance R 1 and first capacitor C 1 and carries out filtering, when overvoltage, piezo-resistance R2 protects circuit.After the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4 rectification, electric current is divided into four the tunnel.The first via by adjusting the RC parameter, is adjusted the delay cut-off time through the series circuit of the 3rd resistance R 3 and second capacitor C, 2 compositions; The second road the 5th diode D5 that flows through, at this moment, Q2 drain electrode of the 2nd VMOS pipe and the reliable conducting of source electrode; Third Road the 7th diode D7 that flows through, the current potential on the 7th resistance R 7 is raised, and makes the first triode Q1 be in conducting state, and the current potential of the collector terminal of the first triode Q1 is drop-down, makes Q3 drain electrode of the 3rd VMOS pipe and source electrode be in cut-off state; Last Lu Jingdi six diode D6 flow to contactor coil J by auxiliary contact J2 conducting, under coil and the common magnetomotive force effect that produces of permanent magnetism, make contactor finish closing operation, after combined floodgate puts in place, auxiliary contact are opened, begin the electric capacity charging only need less current during separating brake, thereby the electric capacity value is less by coil J.When dead electricity or supply voltage in 20%～75% scope, the outage time delay module of being made up of the 3rd resistance R 3 and second capacitor C 2 begins discharge, keeps in touch device and disconnects in the moment time-delay of rolling electricity.When supply voltage is reduced in 20%～75% scope, the 2nd VMOS pipe Q2 turn-offs, the first triode Q1 ends, the grid voltage of the 3rd VMOS pipe Q3 raises, the conducting of the 3rd VMOS pipe Q3 drain-source utmost point, and the 6th capacitor C 6 forms discharge loop by coil J, the 8th resistance R 8, the 3rd VMOS pipe Q3, contactor coil J produces the magnetomotive force opposite with permanent-magnet steel, under the counter-force effect of spring, moving iron core separates with fixed core, realizes the sub-switching operation of permanent magnet contactor.
Claims (4)
1. the control device of a permanent magnet contactor is characterized in that by filtration module (1), overvoltage protective module (2), rectification module (3), delay cut-off module (4), under-voltage protection module (5), power-off signal judge module (6) and has auxiliary contact Executive Module (7) being composed in series successively.
2. the control device of permanent magnet contactor according to claim 1; it is characterized in that described under-voltage protection module (5) is by the 5th diode D5; the 3rd capacitor C 3; the 4th capacitor C 4; the 4th resistance R 4; the 5th resistance R 5; the 8th voltage stabilizing didoe D8; the 2nd VMOS pipe Q2 and the tenth diode D10 form; wherein the anode of the 5th diode D5 respectively with the positive output end of delay cut-off module (4); the positive input terminal of power-off signal judge module (6) connects; the negative electrode of the 5th diode D5 respectively with an end of the 3rd capacitor C 3; one end of the 4th resistance R 4 links to each other; the other end of the 4th resistance R 4 and 5 series connection of the 5th resistance R; the other end of the 3rd capacitor C 3 respectively with the negative output terminal of delay cut-off module (4); the anode of the tenth diode D10 connects; the negative electrode of the tenth diode D10 is managed the drain electrode of Q2 respectively with the 2nd VMOS; the negative input end of power-off signal judge module (6) connects, the 5th resistance R 5; the 4th capacitor C 4; the 8th voltage stabilizing didoe D8 is connected in parallel between the grid and source electrode of the 2nd VMOS pipe Q2.
3. the control device of permanent magnet contactor according to claim 1, it is characterized in that described power-off signal judge module (6) is made up of the 6th diode D6, the 7th diode D7, the 9th voltage stabilizing didoe D9, the 6th resistance R 6, the 7th resistance R 7, the 9th resistance R 9, the 5th capacitor C 5 and the first triode Q1, wherein the anode of the 7th diode D7 is connected with the positive output end of under-voltage module (5), the anode of the 6th diode D6 respectively, and the negative electrode of the 6th diode D6 is connected with the first input end with auxiliary contact Executive Module (7); The negative electrode of the 7th diode D7 respectively with an end of the 5th capacitor C 5, one end of the 6th resistance R 6 connects, the other end of the 5th capacitor C 5 respectively with the negative input end of under-voltage module (5), one end of the 7th resistance R 7 connects, the other end of the 7th resistance R 7 respectively with the other end of the 6th resistance R 6, the base stage of the first triode Q1 connects, the emitter of the first triode Q1 is connected the back and is connected with the four-input terminal with auxiliary contact Executive Module (7) with the anode of the 9th voltage stabilizing didoe D9, the negative electrode of the 9th voltage stabilizing didoe D9 respectively with an end of the 9th resistance R 9, the collector electrode of the first triode Q1, the 3rd input that has in the auxiliary contact Executive Module (7) connects, and the other end of the 9th resistance R 9 is connected with second input in having auxiliary contact Executive Module (7).
4. according to the control device of the permanent magnet contactor of claim 1, it is characterized in that describedly having auxiliary contact Executive Module (7) by the 8th resistance R 8, the 6th capacitor C 6, contactor coil J, the 11 diode D11, the 3rd VMOS pipe Q3 and auxiliary contact J2 form, wherein an end of the 8th resistance R 8 respectively with first output of power-off signal judge module (6), the end of coil J connects, the other end of the 8th resistance R 8 is managed the drain electrode of Q3 respectively with the 3rd VMOS, the negative electrode of the 11 diode D11 connects, the grid of the 3rd VMOS pipe Q3 is connected with the 3rd output of power-off signal judge module (6), after the source electrode of the anode of the 11 diode D11 and the 3rd VMOS pipe Q3 is connected respectively with the 4th output of power-off signal judge module (6), one end of the 6th capacitor C 6 connects, the other end of the 6th capacitor C 6 is connected the back and is connected with second output of power-off signal judge module (6) with the other end of coil J, auxiliary contact J2 is in parallel with capacitor C 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200381351U CN201336250Y (en) | 2009-01-23 | 2009-01-23 | Control device of permanent magnet contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200381351U CN201336250Y (en) | 2009-01-23 | 2009-01-23 | Control device of permanent magnet contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336250Y true CN201336250Y (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200381351U Expired - Lifetime CN201336250Y (en) | 2009-01-23 | 2009-01-23 | Control device of permanent magnet contactor |
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| Country | Link |
|---|---|
| CN (1) | CN201336250Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866777B (en) * | 2010-05-14 | 2012-09-19 | 东南大学 | Reverse flux-weakening control type intelligent permanent magnet contactor with no position sensor |
-
2009
- 2009-01-23 CN CNU2009200381351U patent/CN201336250Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866777B (en) * | 2010-05-14 | 2012-09-19 | 东南大学 | Reverse flux-weakening control type intelligent permanent magnet contactor with no position sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091028 Effective date of abandoning: 20090123 |