CN2432674Y - Contactless AC contactor unit - Google Patents
Contactless AC contactor unit Download PDFInfo
- Publication number
- CN2432674Y CN2432674Y CN 00215780 CN00215780U CN2432674Y CN 2432674 Y CN2432674 Y CN 2432674Y CN 00215780 CN00215780 CN 00215780 CN 00215780 U CN00215780 U CN 00215780U CN 2432674 Y CN2432674 Y CN 2432674Y
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- CN
- China
- Prior art keywords
- pin
- ground connection
- control circuit
- state relay
- circuit
- Prior art date
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Abstract
The utility model relates to an alternating current contactor without a contact, which is composed of an outer shell, radiation fins, a fan, a power circuit, a control circuit and a solid state relay SSR. The utility model is characterized in that the control circuit is formed by connecting a time base integrated block IC2, voltage dividing resistors R1, R2, bypass voltage C3 and a switch K. When the switch K is switched on, the control circuit outputs high voltage, and the solid state relay SSR switches on a main circuit in order to cause a motor M to rotate. When the switch K is switched off, the control circuit outputs low voltage, and the solid state relay SSR switches off the main circuit in order to cause a motor M to stop rotation. The utility model is suitable for electric equipment which is started frequently and has an inflammable working environment.
Description
The utility model relates to a kind of electronic-controlled installation, specifically is a kind of contactless A.C. contactor.
Originally be made up of control circuit and mechanical part the contact A.C. contactor, connect when control circuit and make the closing of contact, control circuit disconnects the contact is opened.This have the contact A.C. contactor to have the following disadvantages: the one, and produce spark during contacting between the contact, and produce noise, it is not suitable for inflammable and explosive operational environment.The 2nd, frequent startup, the electric arc that produces between the contact easily burns contact, causes loose contact, causes phase shortage to burn motor.The 3rd, can not keep the complete of motor power sine wave, there is high order harmonic component, diminish motor, increase to supply line and pollute.The 4th, the useful life of contact is short.
The purpose of this utility model is that design a kind ofly can overcome the above-mentioned shortcoming that the contact A.C. contactor is arranged, and having does not have the machinery action, starts a kind of contactless A.C. contactor of sensitivity, stable performance, reliable operation.
The utility model is achieved in that it is made up of shell, fin, fan, power circuit, control circuit and solid-state relay SSR.Control circuit is by time base ic chip
2Pin 1 ground connection, low triggering end pin 2 is connected with high-triggering end pin 6, reset terminal pin 4 is connected shunt capacitance C with power positive end pin 8
3One end is connected back other end ground connection with control end pin 5, output pin 3 and anodal connection of solid-state relay SSR control terminals, each phase solid-state relay SSR control terminals series connection back minus earth, divider resistance R
1, R
2One end connects the back and is connected R with pin 2, pin 6
1The other end be connected with pin 4, pin 8 back be connected R with power circuit output end
2Other end ground connection, K switch one end is connected back other end ground connection and forming with pin 2, pin 6.
Power circuit is that transformer T and rectifier bridge D form bridge rectifier, voltage stabilizing rectifying block IC
1Pin 1 be connected IC with the output of rectifier bridge D
1Pin 2 ground connection, IC
1Output pin 3 and control circuit R
1, IC
2Pin 4, IC
2Pin 8 connects filter capacitor C
1One end and IC
1Pin 1 connects back other end ground connection, improves circuit transient response capacitor C
2One end and IC
1Pin 3 connects back other end ground connection and forms.
The utility model has overcome the drawback that the contact A.C. contactor is arranged, and it is contactless not to produce contact sparking, thereby can not cause that phase shortage burns motor because of contact arc burns contact.It can keep the complete of motor power sine wave, does not have high order harmonic component, thereby its can't harm motor and does not increase pollution to supply line.Its long service life is that tens times of contact A.C. contactor useful life are arranged.The utility model also has does not have the machinery action, starts advantages such as sensitivity, stable performance, reliable operation.It is suitable for frequent starting, and the inflammable and explosive electric equipment of operational environment is used.
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the utility model structural representation, shell 1, fin 2, fan 3, printed circuit board (PCB) 4, terminal board 5 and solid-state relay SSR6.
Fig. 2 is the structural representation of Fig. 1 fin 2.
Fig. 3 is the structural representation of the printed circuit board (PCB) 4 of Fig. 1.
Fig. 4 is a circuit diagram of the present utility model, power circuit 7 and control circuit 8.
As Fig. 1, Fig. 2, shown in Figure 3, make the shell 1 of box shape with plastic plate, shell 1 is provided with air regulator; Also be provided with terminal board 5 on the shell 1, which is provided with and exchange 220 volts of power supply terminals, the k switch terminal, three phase mains A, B, C terminal connect X, Y, the Z terminal of motor.The fin 2 that aluminum is made is fixed on the shell 1, and fin 2 is provided with some screws, and fan 3, printed circuit board (PCB) 4, solid-state relay SSR6 are fixed on the fin 2.Printed circuit board (PCB) 4 is according to the power circuit of design and the circuit diagram of control circuit, components and parts are installed on the printed substrate 4, and weld pin, output L+, the L-of control circuit with each mutually the positive and negative electrode after the control terminals series connection of solid-state relay SSR6 connect, transformer T input power supply and being connected with power supply again after power supply terminal is connected, K switch are two lead-in wires and be connected with the K switch after the K switch terminal is connected again.The main circuit input of three-phase solid-state relay SSR6 is connected the back respectively and is connected with power supply with A, B, C terminal on the terminal board 5, output is connected with X, Y, Z terminal on the terminal board 5 respectively and then is connected with three phase electric machine.Fan 3 power lines are connected with 220V power supply terminal on the terminal board 5.
As shown in Figure 4, power circuit 7 and control circuit 8 are made up of printed circuit board (PCB) 4 and components and parts mounted thereto.
Power circuit 7: transformer T is the 5W AC transformer, and input voltage is an alternating current 220V, and output voltage is for exchanging 12V.D is a rectifier bridge, is the interchange 12V voltage commutation of transformer T output direct current 12V voltage.C
1Be filter capacitor, the direct current 12V voltage waveform that rectification is come out is steady, and parameter can be selected withstand voltage 25V for use, and capacity is the 1000uf electrochemical capacitor.IC
1For the voltage stabilizing rectifying block, select MC7812 for use, the stable operating voltage that makes control circuit 8 is at 12V.C
2For improving the transient response electric capacity of circuit, parameter is 25V, and capacity is 1uf.
Control circuit 8:IC
2For time base integrated package, select NE555 for use, its pin 1 earth terminal, pin 2 be a low triggering end, pin 3 is that output (is L
+), pin 4 is a reset terminal, and pin 5 is a control end, and pin 6 is a high-triggering end, and pin 8 is a power positive end.R
1, R
2Be divider resistance, R
1Get the resistance of resistance 2K, power 0.25W, R
2Resistance with resistance 10K, power 0.25W.C
3Be shunt capacitance, K is a switch.
When the utility model is worked, connect K switch
1, 220V mains switch, K switch, transformer T output 12V alternating voltage is through rectifier bridge D rectification output 12V direct voltage, because divider resistance R
2Base ic chip when being made by short circuit
2The voltage at pin 2, pin 6 places is 0V, and pin 3 (is L
+) output 12V voltage, make the action of three-phase solid-state relay SSR6 control system connect its main circuit, and motor M is rotated.When the utility model stop was worked, cut-off switch K was because resistance R
1, R
2The dividing potential drop effect make time base ic chip
2The voltage at pin 2, pin 6 places is 10V, and pin 3 (is L
+) output LOW voltage, make three-phase solid-state relay SSR6 control system return to reset condition and disconnect its main circuit, and the motor M stop is rotated.The utility model also can be used as the contactor of monophase machine or other electric equipment.
Claims (2)
1, a kind of contactless A.C. contactor, it is made up of housing, fin, fan, power circuit, control circuit and solid-state relay SSR, it is characterized in that: control circuit is by time base ic chip
2Pin 1 ground connection, low triggering end pin 2 is connected with high-triggering end pin 6, reset terminal pin 4 is connected shunt capacitance C with power positive end pin 8
3One end is connected back other end ground connection with control end pin 5, output pin 3 and anodal connection of solid-state relay SSR control terminals, each phase solid-state relay SSR control terminals series connection back minus earth, divider resistance R
1, R
2One end connects the back and is connected R with pin 2, pin 6
1The other end be connected with pin 4 pin 8 back be connected R with power circuit output end
2Other end ground connection, K switch one end is connected back other end ground connection and forming with pin 2, pin 6.
2, a kind of contactless A.C. contactor according to claim 1 is characterized in that said power circuit is that transformer T and rectifier bridge D form bridge rectifier, voltage stabilizing rectifying block IC
1Pin 1 be connected IC with the output of rectifier bridge D
1Pin 2 ground connection, IC
1Output pin 3 and control circuit R
1, IC
2Pin 4, IC
2Pin 8 connects filter capacitor C
1One end and IC
1Pin 1 connects back other end ground connection, improves circuit transient response capacitor C
2One end and IC
1Pin 3 connects back other end ground connection and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215780 CN2432674Y (en) | 2000-08-03 | 2000-08-03 | Contactless AC contactor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215780 CN2432674Y (en) | 2000-08-03 | 2000-08-03 | Contactless AC contactor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2432674Y true CN2432674Y (en) | 2001-05-30 |
Family
ID=33581645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00215780 Expired - Fee Related CN2432674Y (en) | 2000-08-03 | 2000-08-03 | Contactless AC contactor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2432674Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320207A (en) * | 2011-06-14 | 2012-01-18 | 江南大学 | Dust collection blackboard eraser |
-
2000
- 2000-08-03 CN CN 00215780 patent/CN2432674Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320207A (en) * | 2011-06-14 | 2012-01-18 | 江南大学 | Dust collection blackboard eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |