CN108879607A - A kind of control device and its control method of contactor for preventing adhesion - Google Patents
A kind of control device and its control method of contactor for preventing adhesion Download PDFInfo
- Publication number
- CN108879607A CN108879607A CN201810834176.5A CN201810834176A CN108879607A CN 108879607 A CN108879607 A CN 108879607A CN 201810834176 A CN201810834176 A CN 201810834176A CN 108879607 A CN108879607 A CN 108879607A
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- China
- Prior art keywords
- contactor
- intermediate relay
- plc controller
- main contacts
- auxiliary contact
- 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.)
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- 238000000034 method Methods 0.000 title claims description 11
- 238000012545 processing Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 229910017435 S2 In Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/008—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- Control Of Ac Motors In General (AREA)
Abstract
A kind of control device of contactor for preventing adhesion, including input module, the input module is connected separately with the first intermediate relay KA10 by conducting wire, second intermediate relay KA11 and third intermediate relay KA12, the first intermediate relay KA10, the coil of second intermediate relay KA11 and third intermediate relay KA12 are connected separately with first contactor KM1, second contactor KM2 and third contactor KM2, the auxiliary contact of first contactor KM1 are connected with No. four input pins of a PLC controller, the auxiliary contact of second contactor KM2 are connected with the auxiliary contact of third contactor KM2 and access No. five input pins of PLC controller；Normally-closed contact is measured in real time by the mode of connection of the auxiliary contact in PLC controller and contactor, prevents the appearance of contact adhesion phenomenon；Access corresponding contactor by the coil of the intermediate relay on device, device protected, the electric current in anti-locking apparatus with it is excessive.
Description
Technical field：
The present invention relates to the control devices and its control method of a kind of contactor for preventing adhesion.
Background technique：
In industrial control field, controller control capability is big, can frequent operation and far distance control, be automatically control
One of critical elements in system are particularly suitable for Motor Control field.But for the motor of frequent starting, it is easy to
There is the phenomenon for keeping motor out of control because of the contact adhesion of contactor, cause mechanical accident and damage to person, exists greatly
Security risk.
Summary of the invention：
It is reasonable in design the present invention provides the control device and its control method of a kind of contactor for preventing adhesion, it can
During motor operation, the detection in advance to contact adhesion phenomenon is realized, enable motor safe handling, eliminate existing
Some security risks improve the stability of device, solve problems of the prior art.
Used technical solution is the present invention to solve above-mentioned technical problem：
A kind of control device of contactor for preventing adhesion, including input module, the input module are separately connected by conducting wire
There are the first intermediate relay KA10, the second intermediate relay KA11 and third intermediate relay KA12, the first intermediate relay
The coil of device KA10, the second intermediate relay KA11 and third intermediate relay KA12 are connected separately with first contactor KM1,
No. four input pins of two contactor KM2 and third contactor KM2, the auxiliary contact of first contactor KM1 and a PLC controller
It is connected, the auxiliary contact of second contactor KM2 are connected and access the five of PLC controller with the auxiliary contact of third contactor KM2
Number input pin；The main contacts of second contactor KM2 and main contacts phase and the company of third contactor KM3, then with first contactor
The main contacts of KM1 is connected in series, and connects at the main contacts and the binding site of the main contacts of third contactor KM3 of second contactor KM2
There is motor, the main contacts of the first contactor KM1 is connected with three-phase wire.
Several breakers are equipped between the main contacts and three-phase wire of the first contactor KM1.
The model CJ1W-OC211 of the input module.
The auxiliary contact of the first contactor KM1 are normally opened contact, the second contactor KM2 and third contactor
The auxiliary contact of KM2 are normally-closed contact.
A kind of control method of the control device of contactor for preventing adhesion, includes the following steps：
Motorrun state is transferred to input module by S1 as electronic signals；
S2, input module transfer signals to PLC controller by the auxiliary contact of intermediate relay and contactor；
S3, PLC controller starting determine the running speed of motor based on the received electrical signal, when motor turns
When speed reaches 2000 rpms, the instruction of stopping is transferred to first contactor KM1 by PLC controller；
The halt instruction and three-phase wire that main contacts on S4, first contactor KM1 is transmitted according to PLC controller disconnect,
Motor shuts down.
In S2, include the following steps：
S2A1, when electric signal passes through intermediate relay, intermediate relay carries out transition processing；
S2A2, electric signal after transition processing is through mutually and second contactor KM2 and third contactor KM2 normally-closed contact even
It is transferred to PLC controller.
The present invention using the above structure, by the mode of connection of the auxiliary contact in PLC controller and contactor to normally closed
Contact is measured in real time, and prevents the appearance of contact adhesion phenomenon；It is accessed and is corresponded to by the coil of the intermediate relay on device
Contactor, device is protected, the electric current in anti-locking apparatus with it is excessive；Pass through the main touching in PLC controller and contactor
Information adjusts the operating condition of motor to point based on the received, guarantees that motor is not out of control, the safety of lifting device；Pass through
Breaker provides short-circuit protection effect to contactor, prevents contactor from burning out；With safe and reliable, the high advantage of precision.
Detailed description of the invention：
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the electrical schematic diagram of contactor auxiliary contact and PLC controller of the invention.
Fig. 3 is the electrical schematic diagram of contactor main contacts and motor of the invention.
Fig. 4 is the programming ladder diagram that PLC of the invention is controlled.
In figure, 1, input module, 2, PLC controller, 3, motor, 4, breaker.
Specific embodiment：
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.
As shown in figs. 1-4, a kind of control device of contactor for preventing adhesion, including input module 1, the input module 1
It is connected separately with the first intermediate relay KA10, the second intermediate relay KA11 and third intermediate relay KA12 by conducting wire,
The coil of the first intermediate relay KA10, the second intermediate relay KA11 and third intermediate relay KA12 are connected separately with
First contactor KM1, second contactor KM2 and third contactor KM2, the auxiliary contact of first contactor KM1 and a PLC are controlled
No. four input pins of device 2 are connected, and the auxiliary contact of second contactor KM2 are connected simultaneously with the auxiliary contact of third contactor KM2
Access No. five input pins of PLC controller 2；The main contacts of the main contacts of second contactor KM2 and third contactor KM3 are mutually simultaneously
Even, it then is connected in series with the main contacts of first contactor KM1, the main touching of the main contacts and third contactor KM3 of second contactor KM2
It is connected with motor 3 at the binding site of point, the main contacts of the first contactor KM1 is connected with three-phase wire.
Several breakers 4 are equipped between the main contacts and three-phase wire of the first contactor KM1.
The model CJ1W-OC211 of the input module 1.
The auxiliary contact of the first contactor KM1 are normally opened contact, the second contactor KM2 and third contactor
The auxiliary contact of KM2 are normally-closed contact.
A kind of control method of the control device of contactor for preventing adhesion, includes the following steps：
3 operating condition of motor is transferred to input module 1 by S1 as electronic signals；
S2, input module 1 transfer signals to PLC controller 2 by the auxiliary contact of intermediate relay and contactor；
S3, PLC controller 2 start, and the running speed of motor 3 is determined based on the received electrical signal, when motor 3
When revolving speed reaches 2000 rpms, the instruction of stopping is transferred to first contactor KM1 by PLC controller 2；
The halt instruction and three-phase wire that main contacts on S4, first contactor KM1 is transmitted according to PLC controller 2 disconnect,
Motor 3 shuts down.
In S2, include the following steps：
S2A1, when electric signal passes through intermediate relay, intermediate relay carries out transition processing；
S2A2, electric signal after transition processing is through mutually and second contactor KM2 and third contactor KM2 normally-closed contact even
It is transferred to PLC controller 2.
In use, opening input module 1, carrying out information collection to the operating condition of motor 3 and being converted to electric signal, lead to
It crosses intermediate relay and contactor is transferred to PLC controller 2, PLC controller 2 starts, the main touching of PLC controller 2 and contactor
Point matches, and adjusts the operating condition of motor 3, and the breaker 4 between the main contacts and three-phase wire of first contactor KM1 is right
Device plays a protective role, and prevents electric current excessive and burns out motor 3；The auxiliary contact of first contactor KM1 are normally opened contact,
The auxiliary contact of second contactor KM2 and third contactor KM3 are normally-closed contact, according to the program in PLC controller 2, second
When contact adhesion occurs for the normally-closed contact of contactor KM2 and the normally-closed contact of third contactor KM3, the first intermediate relay KA10
It disconnects, so that first contactor KM1 is disconnected, the main contacts and three-phase wire of first contactor KM1 is disconnected, and motor 3 stops fortune
Turn, prevent wrong connection, so as to avoid the injury of contactor adhesion bring, realizes the inspection in advance to contactor adhesion phenomenon
It surveys.
Above-mentioned specific embodiment cannot function as limiting the scope of the invention, for the technology people of the art
For member, any alternate modification or transformation made to embodiment of the present invention are fallen within the scope of protection of the present invention.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.
Claims (6)
1. a kind of control device of contactor for preventing adhesion, it is characterised in that：Including input module, the input module passes through conducting wire
It is connected separately with the first intermediate relay KA10, the second intermediate relay KA11 and third intermediate relay KA12, described first
The coil of intermediate relay KA10, the second intermediate relay KA11 and third intermediate relay KA12 are connected separately with the first contact
Device KM1, second contactor KM2 and third contactor KM2, No. four of the auxiliary contact of first contactor KM1 and a PLC controller
Input pin is connected, and the auxiliary contact of second contactor KM2 are connected with the auxiliary contact of third contactor KM2 and access PLC control
No. five input pins of device processed；The main contacts of second contactor KM2 and main contacts phase and the company of third contactor KM3, then with
The main contacts of one contactor KM1 is connected in series, the combination of the main contacts of the main contacts and third contactor KM3 of second contactor KM2
It is connected with motor at point, the main contacts of the first contactor KM1 is connected with three-phase wire.
2. a kind of control device of contactor for preventing adhesion according to claim 1, it is characterised in that：The first contactor
Several breakers are equipped between the main contacts and three-phase wire of KM1.
3. a kind of control device of contactor for preventing adhesion according to claim 1, it is characterised in that：The input module
Model CJ1W-OC211.
4. a kind of control device of contactor for preventing adhesion according to claim 1, it is characterised in that：The first contactor
The auxiliary contact of KM1 are normally opened contact, and the auxiliary contact of the second contactor KM2 and third contactor KM2 are normally-closed contact.
5. a kind of a kind of control method of the control device of contactor for preventing adhesion according to claim 1, including following step
Suddenly：
Motorrun state is transferred to input module by S1 as electronic signals；
S2, input module transfer signals to PLC controller by the auxiliary contact of intermediate relay and contactor；
S3, PLC controller starting determine the running speed of motor based on the received electrical signal, when motor speed reaches
When to 2000 rpms, the instruction of stopping is transferred to first contactor KM1 by PLC controller；
The halt instruction and three-phase wire that main contacts on S4, first contactor KM1 is transmitted according to PLC controller disconnect, electronic
Machine shuts down.
6. a kind of control method of the control device of contactor for preventing adhesion according to claim 5, it is characterised in that：In S2
In, include the following steps：
S2A1, when electric signal passes through intermediate relay, intermediate relay carries out transition processing；
S2A2, electric signal after transition processing is through mutually and second contactor KM2 even and third contactor KM2 normally-closed contact transmit
To PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810834176.5A CN108879607B (en) | 2018-07-26 | 2018-07-26 | Anti-adhesion control device and control method for contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810834176.5A CN108879607B (en) | 2018-07-26 | 2018-07-26 | Anti-adhesion control device and control method for contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108879607A true CN108879607A (en) | 2018-11-23 |
| CN108879607B CN108879607B (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810834176.5A Active CN108879607B (en) | 2018-07-26 | 2018-07-26 | Anti-adhesion control device and control method for contactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN108879607B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782118A (en) * | 2018-12-17 | 2019-05-21 | 珠海格力电器股份有限公司 | Adhesion detection device, charging circuit and adhesion detection method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624296A (en) * | 2011-01-27 | 2012-08-01 | 珠海格力电器股份有限公司 | Star-delta starting circuit and air conditioner with same |
| CN103022959A (en) * | 2013-01-11 | 2013-04-03 | 南阳防爆电气研究所有限公司 | Method and device for adhesion detection of main contact of alternating-current contactor |
| CN208539550U (en) * | 2018-07-26 | 2019-02-22 | 山东金辰机械股份有限公司 | A kind of control device of contactor for preventing adhesion |
-
2018
- 2018-07-26 CN CN201810834176.5A patent/CN108879607B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624296A (en) * | 2011-01-27 | 2012-08-01 | 珠海格力电器股份有限公司 | Star-delta starting circuit and air conditioner with same |
| CN103022959A (en) * | 2013-01-11 | 2013-04-03 | 南阳防爆电气研究所有限公司 | Method and device for adhesion detection of main contact of alternating-current contactor |
| CN208539550U (en) * | 2018-07-26 | 2019-02-22 | 山东金辰机械股份有限公司 | A kind of control device of contactor for preventing adhesion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782118A (en) * | 2018-12-17 | 2019-05-21 | 珠海格力电器股份有限公司 | Adhesion detection device, charging circuit and adhesion detection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108879607B (en) | 2024-04-30 |
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