CN205195255U - Control circuit used for controlling and protecting switching device - Google Patents
Control circuit used for controlling and protecting switching device Download PDFInfo
- Publication number
- CN205195255U CN205195255U CN201521031208.6U CN201521031208U CN205195255U CN 205195255 U CN205195255 U CN 205195255U CN 201521031208 U CN201521031208 U CN 201521031208U CN 205195255 U CN205195255 U CN 205195255U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control
- control circuit
- electromagnet
- signal
- 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.)
- Active
Links
Landscapes
- Relay Circuits (AREA)
Abstract
The utility model provides a control circuit used for controlling and protecting switching device, belongs to the low -voltage electrical equipment field. Including power switching circuit, control converting circuit, the microprocesso, the electromagnet control circuit, the electro -magnet, a tripping control circuit, the release, current transformer and human -computer interaction device, power supply inserts power switching circuit, power switching circuit is above -mentioned other each circuit power supplies, control signal access control converting circuit, microprocessor respectively with control converting circuit, a current transformer, the electromagnet control circuit, dropout control circuit and human -computer interaction device are connected, the electromagnet control circuit is connected with the electro -magnet, dropout control circuit is connected with the release. The advantage: control signal and power supply separated sets when detecting circuit or motor and break down, can export fault -signal such as overload, short circuit for a long time, and the user of being convenient for seeks failure cause, troubleshooting fast in time, removed the co -linear restriction of control signal and power supply, control mode is nimble, and application scope is wide.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, is specifically related to a kind of control circuit of control and protective switching device.
Background technology
Control and protective switching device is a kind of multifunctional electric appliance that have employed modularization single structure; the function of circuit breaker, contactor, thermal relay and isolator combines together by it; there is function i ntegration, modularization; and volume is little, install and use the advantages such as simple and convenient; be a staple product of electrical technology field, market prospects are very wide.
At present, on market, control and protective switching device generally adopts protection and starting and stopping to control is the circuit of same control power supply.This power circuit comprises two kinds of functions, and the first, for protective circuit is powered; The second, starting and stopping control and protective switching device.The weak point of this design is, when a failure occurs, stops control and protective switching device, protective circuit dead electricity, cannot continue to export failure alarm signal.
Because control and protective switching device adopts protection and starting and stopping to control as same control power circuit; starting and stopping signal is identical with control supply voltage; as being interchange AC230V; but automatically controlling occasion at some Motor Control Centers etc. adopts PLC contact to control; because part PLC contact voltage grade is DC24V, cause and cannot directly control existing control and protective switching device.For realizing controlling, needing outside increase adapter to complete starting and stopping and controlling, adding installation volume and cost.
In view of above-mentioned prior art, be necessary to be improved the structure of existing control and protective switching device, for this reason, the applicant has done useful design, and technical scheme described below produces under this background.
Summary of the invention
The purpose of this utility model is the control circuit providing a kind of control and protective switching device, adopts the structure that power supply is separated with control signal, and control signal by the restriction of power supply conllinear, can not realize field control or Long-distance Control.
The purpose of this utility model reaches like this, a kind of control circuit of control and protective switching device, it is characterized in that: comprise power-switching circuit, control change-over circuit, microprocessor, control circuit for electromagnet, electromagnet, dropout control circuit, release, current transformer and human-computer interaction device, power-switching circuit described in power supply access, power-switching circuit is other each circuit supplies above-mentioned, control change-over circuit described in control signal access, described microprocessor respectively with control change-over circuit, current transformer, control circuit for electromagnet, dropout control circuit and human-computer interaction device connect, described control circuit for electromagnet is connected with electromagnet, described dropout control circuit is connected with release.
In a specific embodiment of the present utility model, also comprise alarm output circuit, described alarm output circuit comprises triode Q1 and relay K A1, the microprocessor described in base stage connection of described triode Q1, the collector electrode of triode Q1 connects DC power supply VCC, the emitter of triode Q1 connects one end of relay K A1 coil, and the other end ground connection of relay K A1 coil, the contact of relay K A1 is warning output.
In another specific embodiment of the present utility model, the control signal of the control change-over circuit described in access is any one in AC signal, direct current signal or contact signal.
The utility model is owing to have employed said structure, compared with prior art, the beneficial effect had: control signal is separated setting with power supply, when circuit being detected or motor breaks down, can the fault-signal of output overloading, short circuit etc. for a long time, be convenient to user fast in time looking up the fault reason, fix a breakdown; Relieve the restriction of control signal and power supply conllinear, control mode is flexible, applied widely.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the action control schematic diagram of the utility model one embodiment.
Fig. 3 is the action control schematic diagram of another embodiment of the utility model.
Fig. 4 is the action control schematic diagram of the utility model the 3rd embodiment.
Fig. 5 is the action control schematic diagram of the utility model the 4th embodiment.
Embodiment
Applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to the utility model design all should be considered as protection range of the present utility model.
Refer to Fig. 1; the utility model relates to a kind of control circuit of control and protective switching device, comprises power-switching circuit 1, controls change-over circuit 2, microprocessor 3, control circuit for electromagnet 4, electromagnet 5, dropout control circuit 6, release 7, current transformer 8, human-computer interaction device 9 and alarm output circuit 10.Power-switching circuit 1 described in power supply access, power-switching circuit 1 is other each circuit supplies above-mentioned.Control change-over circuit 2 described in control signal access, described microprocessor 3 is connected with control change-over circuit 2, current transformer 8, control circuit for electromagnet 4, dropout control circuit 6, human-computer interaction device 9 and alarm output circuit 10 respectively.Described control circuit for electromagnet 4 is connected with electromagnet 5, and described dropout control circuit 6 is connected with release 7.In the present embodiment, described alarm output circuit 10 comprises triode Q1 and relay K A1, the microprocessor 3 described in base stage connection of described triode Q1, the collector electrode of triode Q1 connects DC power supply VCC, the emitter of triode Q1 connects one end of relay K A1 coil, the other end ground connection of relay K A1 coil, the contact of relay K A1 is warning output.Described DC power supply VCC is provided by power-switching circuit 1.Other circuit that the present embodiment relates to are prior art, omit herein and specifically repeat.
Please continue to refer to Fig. 1, first, power supply is powered to power-switching circuit 1, and power-switching circuit 1 exports corresponding DC power supply and powers for controlling change-over circuit 2, microprocessor 3, control circuit for electromagnet 4, dropout control circuit 6, human-computer interaction device 9 and alarm output circuit 10.Then, be described course of action of the present utility model, described course of action comprises starting process, stopped process and protection process.During starting, play dynamic control signal and deliver to microprocessor 3 by described control change-over circuit 2, microprocessor 3, by the adhesive of control circuit for electromagnet 4 drive magnet 5, completes start-up function.During stopping, stop control signal delivers to microprocessor 3 by controlling change-over circuit 2, and microprocessor 3, by the disjunction of control circuit for electromagnet 4 drive magnet 5, completes shut-down operation.When shielding; microprocessor 3 is by the electric current in current transformer 8 in real time detection line; when overload, the disconnected fault such as phase, imbalance being detected; microprocessor 3 drives alarm output circuit 10 output alarm signal; microprocessor 3 is by the disjunction of control circuit for electromagnet 4 drive magnet 5 simultaneously, completes shut-down operation.Because power supply exists always, so fault-signal can not interrupt, only after carrying out failure reset by manual operation, the alarm signal of alarm output circuit 10 could be cancelled.The information exchange as button, LED or LCD show etc. can be realized between human-computer interaction device 9 and microprocessor 3.
The effect of described control change-over circuit 2 delivers to microprocessor 3 after control signal being changed to process.Described control signal can be the AC signal such as AC230V, also can be the direct current signals such as PLCDC24V, can also be active, passive contact signal.
Refer to Fig. 2, in the present embodiment, described control signal is passive contact signal, by the action of contact control realization control and protective switching device.During the PLC closing of contact, control and protective switching device starts; When PLC contact disconnects, control and protective switching device disconnects.
Refer to Fig. 3, in the present embodiment, described control signal is passive contact signal, is realized the action of control and protective switching device by passive touch point control.In figure, control and protective switching device is respectively by stop button SB1 and starting button SB2 connection control signal, and starting button SB2 closes, and control and protective switching device starts, and stop button SB1 disconnects, and control and protective switching device stops.When control signal is contact signal, is applicable to installation and PLC control, Motor Control Center etc. in short-range cabinet and automatically controls occasion.
Refer to Fig. 4, in the present embodiment, described control signal is AC signal, is realized the action of control and protective switching device by the mode of two line traffic controls.Ac supply signal is connected to control and protective switching device by change over switch S1.Change over switch S1 closes, and control and protective switching device starts, and change over switch S1 disconnects, and control and protective switching device stops.
Refer to Fig. 5, in the present embodiment, described control signal is AC signal, is realized the action of control and protective switching device by the mode of three line traffic controls.Control and protective switch is successively by starting button SB2 and stop button SB1 connection control signal; and be parallel with auxiliary contact SB3 at starting button SB2 two ends; when starting button SB2 closes; and auxiliary contact SB3 is when closing; control and protective switching device completes self-locking; start to start, when stop button SB1 disconnects, control and protective switching device stops.When control signal is AC signal, long-distance transmissions can be realized, and antijamming capability is strong.
Claims (3)
1.
a kind of control circuit of control and protective switching device, it is characterized in that: comprise power-switching circuit (1), control change-over circuit (2), microprocessor (3), control circuit for electromagnet (4), electromagnet (5), dropout control circuit (6), release (7), current transformer (8) and human-computer interaction device (9), power-switching circuit (1) described in power supply access, power-switching circuit (1) is other each circuit supplies above-mentioned, control change-over circuit (2) described in control signal access, described microprocessor (3) respectively with control change-over circuit (2), current transformer (8), control circuit for electromagnet (4), dropout control circuit (6) and human-computer interaction device (9) connect, described control circuit for electromagnet (4) is connected with electromagnet (5), described dropout control circuit (6) is connected with release (7).
2.
the control circuit of a kind of control and protective switching device according to claim 1; characterized by further comprising alarm output circuit (10); described alarm output circuit (10) comprises triode Q1 and relay K A1; the microprocessor (3) described in base stage connection of described triode Q1; the collector electrode of triode Q1 connects DC power supply VCC; the emitter of triode Q1 connects one end of relay K A1 coil; the other end ground connection of relay K A1 coil, the contact of relay K A1 is warning output.
3.
the control circuit of a kind of control and protective switching device according to claim 1, the control signal of control change-over circuit (2) that it is characterized in that described in accessing is any one in AC signal, direct current signal or contact signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031208.6U CN205195255U (en) | 2015-12-14 | 2015-12-14 | Control circuit used for controlling and protecting switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031208.6U CN205195255U (en) | 2015-12-14 | 2015-12-14 | Control circuit used for controlling and protecting switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205195255U true CN205195255U (en) | 2016-04-27 |
Family
ID=55788211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521031208.6U Active CN205195255U (en) | 2015-12-14 | 2015-12-14 | Control circuit used for controlling and protecting switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205195255U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068487A (en) * | 2017-04-11 | 2017-08-18 | 刘禹辰 | It is a kind of that the method that dry contact signal circuit induced voltage influences is eliminated by relay |
| CN107134390A (en) * | 2017-07-03 | 2017-09-05 | 石家庄福润新技术股份有限公司 | A kind of intelligent control and protection switch |
| CN108155632A (en) * | 2017-12-27 | 2018-06-12 | 中国船舶重工集团公司第七0三研究所 | A kind of DC power supply loop short circuit isolation module |
-
2015
- 2015-12-14 CN CN201521031208.6U patent/CN205195255U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068487A (en) * | 2017-04-11 | 2017-08-18 | 刘禹辰 | It is a kind of that the method that dry contact signal circuit induced voltage influences is eliminated by relay |
| CN107134390A (en) * | 2017-07-03 | 2017-09-05 | 石家庄福润新技术股份有限公司 | A kind of intelligent control and protection switch |
| CN108155632A (en) * | 2017-12-27 | 2018-06-12 | 中国船舶重工集团公司第七0三研究所 | A kind of DC power supply loop short circuit isolation module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205195255U (en) | Control circuit used for controlling and protecting switching device | |
| CN103441508A (en) | Multipurpose low-voltage intelligent capacitor | |
| CN203660492U (en) | Microcomputer comprehensive protection device having active/passive automatic switching function | |
| CN103701091A (en) | Electric leakage controller for circuit breaker | |
| CN203617686U (en) | Simple control circuit for open-phase protection | |
| CN205029421U (en) | Power supply switching device | |
| CN104377809A (en) | Intelligent control device of communication station low-voltage distribution system | |
| CN203439864U (en) | Elevator control cabinet | |
| CN202435637U (en) | Zero-power-consumption standby control circuit of electromagnetic induction heating device | |
| CN206117293U (en) | Each other is equipped with control circuit industrial furnace fan dual supply converter | |
| CN201608516U (en) | High-reliability arc light protective device | |
| CN203522132U (en) | Breaker electric leakage controller | |
| CN201623379U (en) | Operation controller of switch cabinet | |
| CN202583785U (en) | Security isolation and anti-interference structure of a PLC cabinet | |
| CN202649754U (en) | Novel electric operation control device | |
| CN201946962U (en) | Driving protective circuit of IGBT (insulated gate bipolar translator) power switching tube bridge circuit | |
| CN205355944U (en) | Dual electric interlocking alternating current regulated power supply box of dual supply with anti -interference function | |
| CN103434907A (en) | Power supply open-phase protection device of elevator control cabinet | |
| CN204696793U (en) | A kind of duplicate supply control cabinet possessing anti-misoperation function | |
| CN203733718U (en) | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function | |
| CN205122482U (en) | Intelligent direct current contactor | |
| CN204481355U (en) | A kind of low-voltage comprehensive distribution box | |
| CN201839066U (en) | Automatic alternating current supply switchover device in direct current system based on controlling of single chip computer | |
| CN203589834U (en) | Alternating current main standby power supply intelligent switching device | |
| CN203733720U (en) | Control circuit for electromagnetic contactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |