CN204244113U - A kind of control circuit of soft initiator - Google Patents
A kind of control circuit of soft initiator Download PDFInfo
- Publication number
- CN204244113U CN204244113U CN201420559358.3U CN201420559358U CN204244113U CN 204244113 U CN204244113 U CN 204244113U CN 201420559358 U CN201420559358 U CN 201420559358U CN 204244113 U CN204244113 U CN 204244113U
- Authority
- CN
- China
- Prior art keywords
- motor
- soft initiator
- coil
- relay
- bypass contactor
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of control circuit of soft initiator, comprise motor main circuit and circuit for controlling motor, wherein motor main circuit comprises the motor be connected on three-phase alternating-current supply, soft initiator is connected with between three-phase alternating-current supply and motor, also bypass contactor is connected with between described three-phase alternating-current supply and motor, one end that described bypass contactor often opens main contacts is connected to three-phase alternating-current supply, and the other end that described bypass contactor often opens main contacts is connected to described motor.Circuit for controlling motor is the control circuit be made up of motor start switch, motor shutdown switch, auxiliary relay and the time relay.The control circuit of this soft initiator can effectively prevent because of the motor stopping that soft initiator fault causes in motor normal course of operation, can also obtain the running state parameter of motor the moment simultaneously.
Description
Technical field
The utility model relates to electric machines control technology, particularly a kind of control circuit of soft initiator.
Background technology
In modern scientist field, heavy-duty motor is widely used.Starting current when heavy-duty motor directly starts can reach 5 times of rated current, larger to motor self damage ratio.In order to reduce the starting current of motor, soft initiator is able to general use.
When flood control is combated typhoon; typhoon or heavy rain often cause the exterior power supply plant of flood control system to jump electricity; often need emergency start diesel engine generator with flood control of powering; but the power supply that diesel engine generator exports is unprocessed; high order harmonic component is a lot; damage is had to the components and parts in soft starter; then motor can be stopped transport because of the protectiveness fault of soft initiator in flood control system; then need to carry out motor restart operation; even there will be the phenomenon that motor can not start, and then cause the loss that cannot retrieve to production equipment.Solve this problem then to have higher requirement to the operation stability of the heavy-duty motor in flood control system and supporting soft initiator thereof; maintain the stable operation of system; when then requiring that in, electrical network poor in power network fluctuation, the quality of power supply, higher harmonics is more; if when power supply is not stopped transport; avoid the motor stopping that soft initiator causes because of himself protectiveness fault; need soft initiator can the ruuning situation of real time monitoring motor simultaneously, only in the start-up course and stopping process of motor, participate in Electric Machine Control.
Utility model content
Technical problem to be solved in the utility model provides a kind of motor stopping that can effectively prevent because soft initiator fault causes for above-mentioned prior art, simultaneously can also the control circuit of soft initiator of monitoring motor running status.
The technical scheme in the invention for solving the above technical problem is: a kind of control circuit of soft initiator, comprise motor main circuit and circuit for controlling motor, wherein said motor main circuit comprises the motor be connected on three-phase alternating-current supply, soft initiator is connected with between described three-phase alternating-current supply and motor, it is characterized in that: between described three-phase alternating-current supply and motor, be also connected with bypass contactor, one end that described bypass contactor often opens main contacts is connected to three-phase alternating-current supply, and the other end that described bypass contactor often opens main contacts is connected to described motor;
Described circuit for controlling motor comprises motor start switch, motor shutdown switch, auxiliary relay and the time relay;
The first end of wherein said motor shutdown switch is connected with a wherein phase firewire of three-phase alternating-current supply, second end of described motor shutdown switch is connected with the first end of motor start switch, second end of described motor start switch is connected with the first end of auxiliary relay coil, second end of described auxiliary relay coil is connected with the zero line of AC power, the two ends of described auxiliary relay coil are also connected with the two ends of described time relay coil, and the two ends of described motor start switch are also connected to the two ends of the first normally opened contact of auxiliary relay;
The two ends of the working power terminal of described soft initiator are connected to wherein between a phase firewire and zero line of three-phase alternating-current supply;
The common port terminal of described soft initiator is connected with the two ends of the second normally opened contact of described auxiliary relay respectively with startup terminal;
The first end of the programming lead-out terminal of described soft initiator is connected with a wherein phase firewire of three-phase alternating-current supply, second end of the programming lead-out terminal of described soft initiator is connected to the first end of time relay normally-closed contact, second end of described time relay normally-closed contact is connected to one end of bypass contactor coil, and the described bypass contactor coil other end is connected on the zero line of AC power;
One end that described bypass contactor often drives auxiliary contact is connected on a wherein phase firewire of three-phase alternating-current supply, the other end that this bypass contactor often drives auxiliary contact is connected to the first end of the 3rd normally opened contact of auxiliary relay, second end of the 3rd normally opened contact of described auxiliary relay is connected to the first end of described bypass contactor coil, and the second end of described bypass contactor coil is connected on the zero line of AC power.
In order to ensure motor safety, in described motor main circuit, between described bypass contactor and described motor, be also connected with thermal relay;
In described circuit for controlling motor, one end of described thermal relay normally closed contact is connected to two ends of described motor start switch, and the other end of described thermal relay normally closed contact is connected to the first end of described auxiliary relay coil.
In order to the control mode of soft initiator can be switched, in described circuit for controlling motor, between described auxiliary relay coil and time relay coil, be also connected with a selector switch.
Compared with prior art; the utility model has the advantage of: the control circuit of this soft initiator and can stop playing its effect in the process of motor at starter motor; can effectively prevent again in motor normal course of operation because of motor stopping that soft initiator fault causes; prevent from causing the loss that cannot retrieve to production equipment; simultaneously can also the running status of monitoring motor in the normal course of operation of motor, the moment obtains the running state parameter of motor.
Accompanying drawing explanation
Fig. 1 is motor main circuit diagram in the utility model embodiment.
Fig. 2 is circuit for controlling motor figure in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in Fig. 1 ~ Fig. 2, the control circuit of the soft initiator 1 in the present embodiment, comprises motor main circuit and circuit for controlling motor.
Wherein motor main circuit comprises the motor M be connected on three-phase alternating-current supply, is connected with soft initiator 1 between three-phase alternating-current supply and motor M.Also be connected with bypass contactor XC between three-phase alternating-current supply and motor M, one end that described bypass contactor XC often opens main contacts is connected to three-phase alternating-current supply, and the other end that described bypass contactor XC often opens main contacts is connected to described motor M.In order to ensure motor M safety, in motor main circuit, between bypass contactor XC main contacts and motor M, be also connected with thermal relay RJ.
Circuit for controlling motor comprises motor start switch QA, motor shutdown switch TA, intermediate relay ZJ and time relay KT;
Wherein the first end of motor shutdown switch TA is connected with a wherein phase firewire of three-phase alternating-current supply, second end of motor shutdown switch TA is connected with the first end of motor start switch QA, second end of motor start switch QA is connected with the first end of thermal relay RJ normally-closed contact, second end of thermal relay RJ normally-closed contact is connected with the first end of intermediate relay ZJ coil, second end of intermediate relay ZJ coil is connected with the zero line of AC power, the two ends of intermediate relay ZJ coil are also connected with the two ends of time relay KT coil, in order to the control mode of soft initiator 1 can be switched, a selector switch XZ is also connected with between intermediate relay ZJ coil and time relay KT coil.The two ends of motor start switch QA are also connected to the two ends of the first normally opened contact ZJ1 of auxiliary relay.
The two ends of the working power terminal of soft initiator 1 are connected to wherein between a phase firewire and zero line of three-phase alternating-current supply.The common port terminal of soft initiator 1 is connected with the two ends of the second normally opened contact ZJ2 of auxiliary relay respectively with startup terminal.
The first end of the programming lead-out terminal of soft initiator 1 is connected with a wherein phase firewire of three-phase alternating-current supply, second end of the programming lead-out terminal of soft initiator 1 is connected to the first end of time relay KT normally-closed contact, second end of time relay KT normally-closed contact is connected to one end of bypass contactor XC coil, and the bypass contactor XC coil other end is connected on the zero line of AC power;
One end that bypass contactor XC often drives auxiliary contact is connected on a wherein phase firewire of three-phase alternating-current supply, the other end that this bypass contactor XC often drives auxiliary contact is connected to the first end of the 3rd normally opened contact ZJ3 of auxiliary relay, second end of the 3rd normally opened contact ZJ3 of auxiliary relay is connected to the first end of bypass contactor XC coil, and the second end of bypass contactor XC coil is connected on the zero line of AC power.
The course of work of the control circuit of this soft initiator 1 is as follows:
Step one, rotary monitoring switch XZ are to closure state, soft initiator 1 in the control circuit of then this soft initiator 1 participates in the startup of motor M and the control of stopped process, other running times of motor M do not participate in controlling, and only participate in the supervision to motor M running status.
Step 2, press motor start switch QA, motor start switch QA is closed, then intermediate relay ZJ coil obtains electric, thus the first normally opened contact ZJ1 of auxiliary relay, second normally opened contact, 3rd normally opened contact closes respectively, the closed intermediate relay ZJ that makes of the first normally opened contact ZJ1 of auxiliary relay closes self-locking, the closed pair of the second normally opened contact ZJ2 of auxiliary relay starts soft initiator 1 and sends motor M enabling signal, soft initiator 1 is opened work and is controlled the start-up course of motor M, while motor M has started, bypass contactor XC coil obtains electric, bypass contactor XC auxiliary contact are closed, and make bypass contactor XC close self-locking with bypass contactor XC fitting coils, owing to being energized all the time in bypass contactor XC coil, then the main contacts of bypass contactor XC remains closed self-locking state.
Step 3, time relay KT are according to after parameters time delay certain hour, then time relay KT normally-closed contact disconnects, now due to the closed also self-locking of bypass contactor XC main contacts, bypass contactor XC does not control by the motor stop signal of soft initiator 1, the operating state signal of soft initiator 1 only monitoring motor M.In this process; the fault of soft initiator 1 can not affect the operation of motor M; the soft start fault that then can not cause because of system jumping electricity, power high-order harmonic generation in the running of motor M, causes the continuous shutdown of motor M and restarts, protecting the safety of production equipment.
Step 4, press motor shutdown switch TA after, then intermediate relay ZJ dead electricity, thus the first normally opened contact ZJ1 of auxiliary relay, the second normally opened contact, the 3rd normally opened contact disconnect respectively, the disconnection of the first normally opened contact ZJ1 of auxiliary relay relieves the closed self-locking of intermediate relay ZJ, time relay KT coil losing electricity simultaneously, the normally-closed contact of time relay KT closes.The disconnection of the second normally opened contact ZJ2 of auxiliary relay then sends motor M stop signal to startup soft initiator 1, and soft initiator 1 controls the stoppage in transit process of motor M.The disconnection of the 3rd normally opened contact ZJ3 of auxiliary relay relieves the closed self-locking of bypass contactor XC, and bypass contactor XC is disconnected.
Wherein, if in step one, when rotating selector switch XZ to off-state, then soft initiator 1 is according to its former control mode work, and soft initiator 1 participates in the control procedure that whole motor M is run.
Claims (3)
1. the control circuit of a soft initiator, comprise motor main circuit and circuit for controlling motor, wherein said motor main circuit comprises the motor (M) be connected on three-phase alternating-current supply, soft initiator (1) is connected with between described three-phase alternating-current supply and motor (M), it is characterized in that: between described three-phase alternating-current supply and motor (M), be also connected with bypass contactor (XC), one end that described bypass contactor (XC) often opens main contacts is connected to three-phase alternating-current supply, the other end that described bypass contactor (XC) often opens main contacts is connected to described motor (M),
Described circuit for controlling motor comprises motor start switch (QA), motor shutdown switch (TA), auxiliary relay (ZJ) and the time relay (KT);
The first end of wherein said motor shutdown switch (TA) is connected with a wherein phase firewire of three-phase alternating-current supply, second end of described motor shutdown switch (TA) is connected with the first end of motor start switch (QA), second end of described motor start switch (QA) is connected with the first end of auxiliary relay (ZJ) coil, second end of described auxiliary relay (ZJ) coil is connected with the zero line of AC power, the two ends of described auxiliary relay (ZJ) coil are also connected with the two ends of the described time relay (KT) coil, the two ends of described motor start switch (QA) are also connected to the two ends of first normally opened contact (ZJ1) of auxiliary relay,
The two ends of the working power terminal of described soft initiator (1) are connected to wherein between a phase firewire and zero line of three-phase alternating-current supply;
The common port terminal of described soft initiator (1) is connected with the two ends of second normally opened contact (ZJ2) of described auxiliary relay respectively with startup terminal;
The first end of the programming lead-out terminal of described soft initiator (1) is connected with a wherein phase firewire of three-phase alternating-current supply, second end of the programming lead-out terminal of described soft initiator (1) is connected to the first end of the time relay (KT) normally-closed contact, second end of the described time relay (KT) normally-closed contact is connected to one end of bypass contactor (XC) coil, and described bypass contactor (XC) the coil other end is connected on the zero line of AC power;
One end that described bypass contactor (XC) often drives auxiliary contact is connected on a wherein phase firewire of three-phase alternating-current supply, the other end that this bypass contactor (XC) often drives auxiliary contact is connected to the first end of the 3rd normally opened contact (ZJ3) of auxiliary relay, second end of the 3rd normally opened contact (ZJ3) of described auxiliary relay is connected to the first end of described bypass contactor (XC) coil, and the second end of described bypass contactor (XC) coil is connected on the zero line of AC power.
2. the control circuit of soft initiator according to claim 1, it is characterized in that: in described motor main circuit, described bypass contactor (XC) is often opened between main contacts and described motor (M) and is also connected with thermal relay (RJ);
In described circuit for controlling motor, one end of described thermal relay (RJ) normally-closed contact is connected to two ends of described motor start switch (QA), and the other end of described thermal relay (RJ) normally-closed contact is connected to the first end of described auxiliary relay (ZJ) coil.
3. the control circuit of soft initiator according to claim 1 and 2, it is characterized in that: in described circuit for controlling motor, between described auxiliary relay (ZJ) coil and the time relay (KT) coil, be also connected with a selector switch (XZ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559358.3U CN204244113U (en) | 2014-09-26 | 2014-09-26 | A kind of control circuit of soft initiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559358.3U CN204244113U (en) | 2014-09-26 | 2014-09-26 | A kind of control circuit of soft initiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204244113U true CN204244113U (en) | 2015-04-01 |
Family
ID=52773553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420559358.3U Expired - Fee Related CN204244113U (en) | 2014-09-26 | 2014-09-26 | A kind of control circuit of soft initiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204244113U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026783A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control method for soft starting of double-speed motor |
| CN106026784A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control device for soft starting of double-speed motor |
| CN106026782A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Control line for soft starting of double-speed motor |
| CN106026785A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control line for soft starting of double-speed motor |
| CN106059395A (en) * | 2016-06-25 | 2016-10-26 | 黄志强 | Soft-starting control device for double-speed motor |
| CN106100454A (en) * | 2016-06-25 | 2016-11-09 | 黄志强 | Double-speed motor soft start control method |
| CN106602934A (en) * | 2015-10-20 | 2017-04-26 | 常州博瑞电力自动化设备有限公司 | Water pump soft start control circuit and method with bypass and dual redundancy |
| CN112072608A (en) * | 2020-09-24 | 2020-12-11 | 上海半月形机电船舶有限公司 | Switch for protecting fat of three power supply appliances and design and manufacture technology |
| CN115561629A (en) * | 2022-09-16 | 2023-01-03 | 中核检修有限公司 | Portable motor no-load test device |
-
2014
- 2014-09-26 CN CN201420559358.3U patent/CN204244113U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602934A (en) * | 2015-10-20 | 2017-04-26 | 常州博瑞电力自动化设备有限公司 | Water pump soft start control circuit and method with bypass and dual redundancy |
| CN106026783A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control method for soft starting of double-speed motor |
| CN106026784A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control device for soft starting of double-speed motor |
| CN106026782A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Control line for soft starting of double-speed motor |
| CN106026785A (en) * | 2016-06-25 | 2016-10-12 | 黄志强 | Automatic control line for soft starting of double-speed motor |
| CN106059395A (en) * | 2016-06-25 | 2016-10-26 | 黄志强 | Soft-starting control device for double-speed motor |
| CN106100454A (en) * | 2016-06-25 | 2016-11-09 | 黄志强 | Double-speed motor soft start control method |
| CN112072608A (en) * | 2020-09-24 | 2020-12-11 | 上海半月形机电船舶有限公司 | Switch for protecting fat of three power supply appliances and design and manufacture technology |
| CN115561629A (en) * | 2022-09-16 | 2023-01-03 | 中核检修有限公司 | Portable motor no-load test device |
| CN115561629B (en) * | 2022-09-16 | 2023-09-01 | 中核检修有限公司 | Portable motor no-load test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204244113U (en) | A kind of control circuit of soft initiator | |
| CN106685271B (en) | The operating status control method of brushless dual-feed motor | |
| CN201312283Y (en) | High-power intelligent electricity economizer start control device | |
| CN206077065U (en) | Auto switching electric source system | |
| CN203014354U (en) | Circuit for controlling auxiliary device of large units | |
| CN205792315U (en) | A kind of star triangle start circuit of threephase motor | |
| CN109412466B (en) | Steam turbine emergency direct-current lubricating oil pump composite start-stop device and control method | |
| CN204465392U (en) | A kind of two drag many redundance types flexible starter for electric motor system | |
| CN203942470U (en) | The startup control circuit of a kind of pumped storage unit SFC | |
| CN102868214A (en) | utomatic standby power supply switching box in small water power station | |
| CN103532445B (en) | A kind of startup control device of heavy load start of motor and control method thereof | |
| CN104917423A (en) | Reduced-voltage starting control system | |
| CN110401216A (en) | A kind of double-fed fan motor unit grid-connecting apparatus | |
| CN202856380U (en) | Back-to-back start control circuit of water-pumping storage machine set | |
| CN102420564B (en) | Intelligent bypass system for high-voltage frequency converter | |
| CN204733099U (en) | A kind of reduced-voltage starting control system | |
| CN204706867U (en) | A kind of protection system of mine-used frequency-converter | |
| CN102420563B (en) | Intelligent bypass system for high-voltage frequency converter | |
| CN209375506U (en) | A kind of generator soft starting device avoiding secondary pulse electric current | |
| CN207278556U (en) | A kind of pressurized tank pump control unit based on motor speed | |
| CN203352497U (en) | Circulating pump controlling device equipped with motor restarting controller | |
| CN204928084U (en) | Prevention grid fluctuation system | |
| CN201910765U (en) | Energy-saving starting control circuit of asynchronous motor | |
| CN201550059U (en) | Cross soft start device of asynchronous motors | |
| CN105564622A (en) | Ship electric energy distribution control device based on contacts and control method |
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: 20150401 Termination date: 20190926 |