CN203607334U - Control and protection module of contactor - Google Patents
Control and protection module of contactor Download PDFInfo
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- CN203607334U CN203607334U CN201320850148.5U CN201320850148U CN203607334U CN 203607334 U CN203607334 U CN 203607334U CN 201320850148 U CN201320850148 U CN 201320850148U CN 203607334 U CN203607334 U CN 203607334U
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- contactor
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- power supply
- control
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Abstract
The utility model relates to a control and protection module of a contactor. The module comprises a rectifier bridge (A), a strong current excitation switch tube (B), an anti-interference-electricity capacitance circuit (C), a low voltage holding circuit (D), a single-chip microcomputer control system (F), a voltage detection circuit (G), a current sensor circuit (H), a contactor coil (I), a control power supply (J) and an external control switch (K). The module of the utility model possesses functions of contactor energy saving, anti-interference-electricity performance, motor or load fault protection and the like and can be combined with the contactor. The module possesses the characteristics that the structure is compact; cost is low; the functions and applicability are strong and so on.
Description
Technical field
The utility model relates to contactor field, especially a kind of contactor control and protection module.
Background technology
While normally startup about contactor, single-chip computer control system completes strong excitatory startup and low-voltage maintenance by the excitatory switching tube of heavy current and low pressure holding circuit, when normal release, single-chip computer control system turn-offs low pressure holding circuit and completes contactor release, existing many introductions in document at present.Detect and shake after electric fault generation at single-chip computer control system, maintain contactor hold mode by capacitor discharge in low pressure holding circuit, in the patent of invention " AC contactor controller based on low-voltage capacity and control method " of declaring at Bao Guanghai etc., discussed after supply voltage falls, low pressure maintained switch pipe discharges to provide by low-voltage capacity and during voltage falls, maintains contactor coil and keep the required energy of operation, can guarantee A.C. contactor realize accurately, easily voltage and fall during contactor continuous service.Single-chip computer control system detects voltage signal and current signal, in the time judging motor or load faulty, turn-offs low pressure holding circuit by fault type and requirement, realizes the protection of motor and load.In the patent of invention " contactor of integrated electronic type protector function and structure " of the applications such as Wu Gongxiang, discuss.But energy saving in running and anti-shake Electricity Functional are the important functions of contactor, and contactor main circuit must be installed thermal relay or motor protector carries out motor or load fault protection in actual applications.But; existing contactor product and disclosed technology are not integrated in the functions such as contactor energy-saving, anti-shake electricity, motor or load fault protection in one module, this module can be combined with contactor there is compact conformation, cost is low, function and the feature such as application is strong.
Utility model content
In view of this; the purpose of this utility model is to provide a kind of contactor control and protection module; this module has the functions such as contactor energy-saving, anti-shake electricity, motor or load fault protection, can be combined with contactor, has that compact conformation, cost are low, function and a feature such as application is strong.
The utility model adopts following scheme to realize: a kind of contactor control and protection module, is characterized in that: comprise rectifier bridge (A), the excitatory switching tube of heavy current (B), anti-shake electric condenser network (C), low pressure holding circuit (D), single-chip computer control system (F), voltage detecting circuit (G), current sensor circuit (H), contactor coil (I), control power supply (J) and external control switch (K);
One end of input power (U) connects one end of described external control switch (K) and the rolling of described voltage detecting circuit (G) electricity sampled signal input (3), the other end of described external control switch (K) connects AC one end of described rectifier bridge (A) and the normal break-make control sampled signal input (1) of described voltage detecting circuit (G), the other end of input power (U) connects the AC other end of described rectifier bridge (A) and the signal common port (2) of described voltage detecting circuit (G), the DC side anode of described rectifier bridge (A) connects the collector electrode of the excitatory switching tube of described heavy current (B) and the positive input terminal of described control power supply (J), the emitter of the excitatory switching tube of described heavy current (B) connects one end of described low pressure holding circuit (D) and one end of described contactor coil (I), the positive DC side end of described rectifier bridge (A) connects the negative input end of described control power supply (J), the 4th output (22) of described control power supply (J), the other end of one end of described anti-shake electric condenser network (C) and described contactor coil (I), second output (2) of described control power supply (J) connects the other end of described anti-shake electric condenser network (C) and the other end of described low pressure holding circuit (D), first output (1) of described control power supply (J) and the 3rd output (11) are connected respectively the both ends of power of described single-chip computer control system (F), the output of described voltage detecting circuit (G) connects the voltage input end of described single-chip computer control system (F), the first output of described single-chip computer control system (F) connects the control end of the excitatory switching tube of described heavy current (B), the second output of described single-chip computer control system (F) connects the control end of described low pressure holding circuit (D), the output of described current sensor circuit (H) connects the current input terminal of described single-chip computer control system (F).
In the utility model one embodiment, described control power supply (J) is insulating power supply.
In the utility model one embodiment, described control power supply (J) is non-insulating power supply, and the 3rd output (11) of described control power supply (J) also connects the positive DC side end of described rectifier bridge (A).
In the utility model one embodiment, the excitatory switching tube of described heavy current (B) is IGBT igbt, transistor or MOSFET field effect transistor.
In the utility model one embodiment, the current sensor in described current sensor circuit (H) is arranged in module or is arranged on the stationary contact bridge of contactor.
In the utility model one embodiment, described current sensor, DC current sensor for D.C. contactor, three separate current transducers that are arranged on respectively on three-phase stationary contact bridge for A.C. contactor, or two separate current transducers that are arranged on respectively on two-phase stationary contact bridge.
In the utility model one embodiment, described contactor control and protection module are the circuit of discrete device composition, or the integrated circuit modules of encapsulation.
The utlity model has the functions such as contactor energy-saving, anti-shake electricity, motor or load fault protection, can be combined with contactor, have that compact conformation, cost are low, function and a feature such as application is strong.
For making the purpose of this utility model, technical scheme and advantage clearer, below will, by specific embodiment and relevant drawings, the utility model be described in further detail.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of the utility model one embodiment.
Fig. 2 is the schematic block circuit diagram of another embodiment of the utility model.
Embodiment
As shown in Figure 1, the utility model provides a kind of contactor control and protection module, comprises rectifier bridge (A), the excitatory switching tube of heavy current (B), anti-shake electric condenser network (C), low pressure holding circuit (D), single-chip computer control system (F), voltage detecting circuit (G), current sensor circuit (H), contactor coil (I), controls power supply (J) and external control switch (K);
One end of input power (U) connects one end of described external control switch (K) and the rolling of described voltage detecting circuit (G) electricity sampled signal input (3), the other end of described external control switch (K) connects AC one end of described rectifier bridge (A) and the normal break-make control sampled signal input (1) of described voltage detecting circuit (G), the other end of input power (U) connects the AC other end of described rectifier bridge (A) and the signal common port (2) of described voltage detecting circuit (G), the DC side anode of described rectifier bridge (A) connects the collector electrode of the excitatory switching tube of described heavy current (B) and the positive input terminal of described control power supply (J), the emitter of the excitatory switching tube of described heavy current (B) connects one end of described low pressure holding circuit (D) and one end of described contactor coil (I), the positive DC side end of described rectifier bridge (A) connects the negative input end of described control power supply (J), the 4th output (22) of described control power supply (J), the other end of one end of described anti-shake electric condenser network (C) and described contactor coil (I), second output (2) of described control power supply (J) connects the other end of described anti-shake electric condenser network (C) and the other end of described low pressure holding circuit (D), first output (1) of described control power supply (J) and the 3rd output (11) are connected respectively the both ends of power of described single-chip computer control system (F), the output of described voltage detecting circuit (G) connects the voltage input end of described single-chip computer control system (F), the first output of described single-chip computer control system (F) connects the control end of the excitatory switching tube of described heavy current (B), the second output of described single-chip computer control system (F) connects the control end of described low pressure holding circuit (D), the output of described current sensor circuit (H) connects the current input terminal of described single-chip computer control system (F).Preferably, described control power supply (J) is insulating power supply.
As shown in Figure 2, the utility model also provides another kind of contactor control and protection module, comprises rectifier bridge (A), the excitatory switching tube of heavy current (B), anti-shake electric condenser network (C), low pressure holding circuit (D), single-chip computer control system (F), voltage detecting circuit (G), current sensor circuit (H), contactor coil (I), controls power supply (J) and external control switch (K);
One end of input power (U) connects one end of described external control switch (K) and the rolling of described voltage detecting circuit (G) electricity sampled signal input (3), the other end of described external control switch (K) connects AC one end of described rectifier bridge (A) and the normal break-make control sampled signal input (1) of described voltage detecting circuit (G), the other end of input power (U) connects the AC other end of described rectifier bridge (A) and the signal common port (2) of described voltage detecting circuit (G), the DC side anode of described rectifier bridge (A) connects the collector electrode of the excitatory switching tube of described heavy current (B) and the positive input terminal of described control power supply (J), the emitter of the excitatory switching tube of described heavy current (B) connects one end of described low pressure holding circuit (D) and one end of described contactor coil (I), the positive DC side end of described rectifier bridge (A) connects the negative input end of described control power supply (J), the 3rd output (11) of described control power supply (J), the 4th output (22) of described control power supply (J), power supply one end of described single-chip computer control system (F), the other end of one end of described anti-shake electric condenser network (C) and described contactor coil (I), second output (2) of described control power supply (J) connects the other end of described anti-shake electric condenser network (C) and the other end of described low pressure holding circuit (D), first output (1) of described control power supply (J) connects the power supply other end of described single-chip computer control system (F), the output of described voltage detecting circuit (G) connects the voltage input end of described single-chip computer control system (F), the first output of described single-chip computer control system (F) connects the control end of the excitatory switching tube of described heavy current (B), the second output of described single-chip computer control system (F) connects the control end of described low pressure holding circuit (D), the output of described current sensor circuit (H) connects the current input terminal of described single-chip computer control system (F).Preferably, described control power supply (J) is non-insulating power supply.
The excitatory switching tube of described heavy current (B) can be IGBT igbt, transistor or MOSFET field effect transistor etc.In described low pressure holding circuit (D), switching tube is IGBT igbt, transistor or MOSFET field effect transistor etc.
It is worth mentioning that, the current sensor in described current sensor circuit (H) is arranged in module or is arranged on the stationary contact bridge of contactor; Described current sensor, is DC current sensor for D.C. contactor, is three separate current transducers that are arranged on respectively on three-phase stationary contact bridge for A.C. contactor, or two separate current transducers that are arranged on respectively on two-phase stationary contact bridge.
Described contactor control of the present utility model and protection module are the circuit of discrete device composition, or the integrated circuit modules of encapsulation.
The utility model operation principle is described as follows, when external control switch is connected, when normal startup, single-chip computer control system is applied to the voltage after rectification on contactor coil by the excitatory switching tube of heavy current, completing strong excitatory startup and low-voltage keeps, after startup completes, turn-off the excitatory switching tube of heavy current, connect low pressure holding circuit and carry out low-voltage maintenance, when normal release, single-chip computer control system turn-offs low pressure holding circuit and completes contactor release, detect and shake after electric fault generation at single-chip computer control system, electric capacity maintains contactor hold mode by low pressure holding circuit to coil discharge or interruption electric discharge, at setting-up time then, electric capacity stops electric discharge, contactor maintains low pressure hold mode, and electric capacity is charged again, single-chip computer control system detects voltage signal and current signal, in the time judging motor or load faulty, turn-off low pressure holding circuit by fault type and requirement, contactor discharges and open circuit, realize the protection of motor and load.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. contactor control and a protection module, is characterized in that: comprise rectifier bridge (A), the excitatory switching tube of heavy current (B), anti-shake electric condenser network (C), low pressure holding circuit (D), single-chip computer control system (F), voltage detecting circuit (G), current sensor circuit (H), contactor coil (I), control power supply (J) and external control switch (K);
One end of input power (U) connects one end of described external control switch (K) and the rolling of described voltage detecting circuit (G) electricity sampled signal input (3), the other end of described external control switch (K) connects AC one end of described rectifier bridge (A) and the normal break-make control sampled signal input (1) of described voltage detecting circuit (G), the other end of input power (U) connects the AC other end of described rectifier bridge (A) and the signal common port (2) of described voltage detecting circuit (G), the DC side anode of described rectifier bridge (A) connects the collector electrode of the excitatory switching tube of described heavy current (B) and the positive input terminal of described control power supply (J), the emitter of the excitatory switching tube of described heavy current (B) connects one end of described low pressure holding circuit (D) and one end of described contactor coil (I), the positive DC side end of described rectifier bridge (A) connects the negative input end of described control power supply (J), the 4th output (22) of described control power supply (J), the other end of one end of described anti-shake electric condenser network (C) and described contactor coil (I), second output (2) of described control power supply (J) connects the other end of described anti-shake electric condenser network (C) and the other end of described low pressure holding circuit (D), first output (1) of described control power supply (J) and the 3rd output (11) are connected respectively the both ends of power of described single-chip computer control system (F), the output of described voltage detecting circuit (G) connects the voltage input end of described single-chip computer control system (F), the first output of described single-chip computer control system (F) connects the control end of the excitatory switching tube of described heavy current (B), the second output of described single-chip computer control system (F) connects the control end of described low pressure holding circuit (D), the output of described current sensor circuit (H) connects the current input terminal of described single-chip computer control system (F).
2. contactor control according to claim 1 and protection module, is characterized in that: described control power supply (J) is insulating power supply.
3. contactor control according to claim 1 and protection module, is characterized in that: described control power supply (J) is non-insulating power supply, and the 3rd output (11) of described control power supply (J) also connects the positive DC side end of described rectifier bridge (A).
4. contactor control according to claim 1 and protection module, is characterized in that: the excitatory switching tube of described heavy current (B) is IGBT igbt, transistor or MOSFET field effect transistor.
5. contactor control according to claim 1 and protection module, is characterized in that: the current sensor in described current sensor circuit (H) is arranged in module or is arranged on the stationary contact bridge of contactor.
6. contactor control according to claim 5 and protection module; it is characterized in that: described current sensor; DC current sensor for D.C. contactor; three separate current transducers that are arranged on respectively on three-phase stationary contact bridge for A.C. contactor, or two separate current transducers that are arranged on respectively on two-phase stationary contact bridge.
7. contactor control according to claim 1 and protection module, is characterized in that: described contactor control and protection module are the circuit of discrete device composition, or the integrated circuit modules of encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850148.5U CN203607334U (en) | 2013-12-23 | 2013-12-23 | Control and protection module of contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850148.5U CN203607334U (en) | 2013-12-23 | 2013-12-23 | Control and protection module of contactor |
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| Publication Number | Publication Date |
|---|---|
| CN203607334U true CN203607334U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850148.5U Expired - Fee Related CN203607334U (en) | 2013-12-23 | 2013-12-23 | Control and protection module of contactor |
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| Country | Link |
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| CN (1) | CN203607334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938780A (en) * | 2016-06-17 | 2016-09-14 | 武汉日新科技照明有限公司 | Low-loss arc-free composite multifunctional DC contactor |
-
2013
- 2013-12-23 CN CN201320850148.5U patent/CN203607334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938780A (en) * | 2016-06-17 | 2016-09-14 | 武汉日新科技照明有限公司 | Low-loss arc-free composite multifunctional DC contactor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20161223 |