CN101917144A - Soft starter/brake for three-phase motor - Google Patents
Soft starter/brake for three-phase motor Download PDFInfo
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- CN101917144A CN101917144A CN 201010238450 CN201010238450A CN101917144A CN 101917144 A CN101917144 A CN 101917144A CN 201010238450 CN201010238450 CN 201010238450 CN 201010238450 A CN201010238450 A CN 201010238450A CN 101917144 A CN101917144 A CN 101917144A
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- brake
- contactor
- chip microcomputer
- soft starter
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Abstract
The invention provides a soft starter/brake for a three-phase motor, relating to the braking and starting fields of three-phase alternating-current (AC) motors. The soft starter/brake mainly comprises a singlechip and is characterized in that the continuity signal output by the singlechip is connected with an operating AC contactor by a silicon controlled thyristor (SCR); the brake signal output by the singlechip is connected with a braking AC contactor by an IGBT; the operating AC contactor is controlled by an operating switching signal; the braking AC contactor is controlled by the braking switching signal; the singlechip is controlled by control signal input; and the operating AC contactor and the braking AC contactor control a peripheral motor. The soft starter/brake has double functions of electronic brake and soft start, drives the mechanical equipment to softly start, realizes low-current electronic brake and can prolong the service lives of the motor and the mechanical equipment and save the electric energy.
Description
Technical field
The present invention relates to three-phase alternating-current motor brake, startup field, is the assembly of a kind of three-phase alternating-current motor with startup and brake gear specifically.
Background technology
The motor of present big-and-middle-sized plant equipment extensively adopts reduced-voltage starting when starting, motor 6 can produce bigger starting current when starting, and electrical network is had bigger moment impact to plant equipment simultaneously.Several different methods such as general now employing triangle reduced-voltage starting, autotransformer reduced-voltage starting, series resistance reduced-voltage starting, but all can not solve the moment impact problem preferably, use device more simultaneously, be prone to fault.And for the brake of motor, general now two kinds of friction brake and the electric brakes that adopt, the main wearing piece that adopts of friction brake, because the wearing and tearing of abrasives are to impacting in useful life of equipment, accuracy is difficult to control simultaneously, poor stability; And electric brake generally is to adopt high-power transformer that 220V or 380V alternating current are changed to 60V, and applied voltage when adjusting the motor brake with high-power current potential device is again with power supply motivation brake after its rectification.The brake structural volume of this kind structure is big, weight is big, and braking effect is poor simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of soft starter/brake for three-phase motor that electronics soft start and brake are combined.
The present invention is achieved in that
Soft starter/brake for three-phase motor, mainly comprise the single-chip microcomputer that links to each other with three-phase alternating-current supply, it is characterized in that: the Continuity signal of described single-chip microcomputer output connects the running A.C. contactor by controllable silicon, the running switching signal control that this running A.C. contactor is also exported by single-chip microcomputer; The brake signal that described single-chip microcomputer is exported connects the brake A.C. contactor by the IGBT pipe, the brake switch signal controlling that this brake A.C. contactor is also exported by single-chip microcomputer; Described running A.C. contactor and brake A.C. contactor are controlled peripheral motor, and described single-chip microcomputer is by control signal input control.
After the present invention adopts said structure, have both electric brake and soft start double effects, drive the soft startup of plant equipment, the moment impact of having avoided electric motor starting to cause, protection plant equipment.Realized little current electrons brake, do not had the machinery wearing and tearing, brake quick and precisely.Can prolong the useful life of motor and plant equipment, and saves energy, have effect simple in structure, easy to use, practical, that cost is low, automaticity is high, can be widely used in the various three-phase alternating-current motors in the industrial equipment.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention, and Fig. 2 is a kind of circuit theory diagrams of the present invention, and Fig. 3 is another kind of circuit theory diagrams of the present invention.
In the accompanying drawing, 1 be single-chip microcomputer, 2 for controllable silicon, 3 for the running A.C. contactor, 4 for IGBT pipe, 5 for the brake A.C. contactor, 6 for motor, 7 for the KAZ auxiliary relay, 8 for the KAS auxiliary relay, 9 for the KAF auxiliary relay, 10 for controlled silicon full-bridge, 11 be the antiport A.C. contactor.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated.
The present invention is a kind of soft starter/brake for three-phase motor that electronics soft start and brake are combined.Adopt 220V or 380V three-phase alternating-current supply, single-chip microcomputer 1 adopts the TUD23D6321BE chip, by control signal input control.As shown in Figure 1, 2, the Continuity signal of single-chip microcomputer 1 output connects running A.C. contactor 3 by controllable silicon 2, this running A.C. contactor 3 is also controlled by the running switching signal of single-chip microcomputer 1 output, the automatic adhesive KAZ of running switching signal auxiliary relay 7, the peripheral motor 6 of pulling running A.C. contactor 3 controls, get through the soft start current channel, realize soft startup of forward of motor 6.The brake signal of described single-chip microcomputer 1 output connects brake A.C. contactor 5 by IGBT pipe 4, the brake switch signal controlling that this brake A.C. contactor 5 is also exported by single-chip microcomputer 1, the automatic adhesive KAS of brake switch signal auxiliary relay 8, the peripheral motor 6 of pulling brake A.C. contactor 5 controls is realized level brake or pulse brake.Be provided with mechanical or electric or locking device between running A.C. contactor 3 and the brake A.C. contactor 5, prevent electric misoperation initiating failure.
The present invention also can adopt another structure, shown in Fig. 1,3, described IGBT pipe 4 is replaced by controlled silicon full-bridge 10, the Continuity signal of described single-chip microcomputer 1 output also connects antiport A.C. contactor 11 by controllable silicon 2, this antiport A.C. contactor 11 is also controlled by the antiport switching signal of single-chip microcomputer 1 output, the automatic adhesive KAF of running switching signal auxiliary relay 9, pulling backward rotation A.C. contactor is controlled peripheral motor 6, get through reverse soft start passage, realize reverse soft startup of motor 6.
The present invention is arranged in the support housing of being made up of the base and the body of backing up.
During use, be example to be applied to the CS6140 engine lathe.Three-phase alternating-current supply provides power supply by circuit breaker, obtains the 220V power supply through the lathe transformer, gives the power supply of this machine.During lathe work, single-chip microcomputer 1 receives enabling signal, and sends Continuity signal, by the adhesive of KAZ auxiliary relay 7, pulling running A.C. contactor 3 is got through the soft start current channel, motor 6 reaches rated speed from static by certain climb curve, the lathe operate as normal.When lathe stopped, single-chip microcomputer 1 received stop signal, and sends brake signal, and by the adhesive of KAS auxiliary relay 8, pulling brake A.C. contactor 5 sends into the brake electric current for motor 6, realizes the brake of pulse brake or level.
Claims (6)
1. soft starter/brake for three-phase motor, mainly comprise the single-chip microcomputer (1) that links to each other with three-phase alternating-current supply, it is characterized in that: the Continuity signal of described single-chip microcomputer (1) output passes through controllable silicon (2) and connects running A.C. contactor (3), and this running A.C. contactor (3) is also controlled by the running switching signal of single-chip microcomputer (1) output; The brake signal that described single-chip microcomputer (1) is exported connects brake A.C. contactor (5) by IGBT pipe (4), the brake switch signal controlling that this brake A.C. contactor (5) is also exported by single-chip microcomputer (1); Described running A.C. contactor (3) and brake A.C. contactor (5) are controlled peripheral motor (6), and described single-chip microcomputer (1) is by control signal input control.
2. soft starter/brake for three-phase motor according to claim 1 is characterized in that: be provided with mechanical or electric or locking device between described running A.C. contactor (3) and the brake A.C. contactor (5).
3. soft starter/brake for three-phase motor according to claim 1 and 2 is characterized in that: described single-chip microcomputer (1) adopts the TUD23D6321BE chip.
4. soft starter/brake for three-phase motor according to claim 3 is characterized in that: described single-chip microcomputer (1) is respectively by auxiliary relay output running switching signal and brake switch signal.
5. soft starter/brake for three-phase motor according to claim 4 is characterized in that: described IGBT pipe (4) can adopt controlled silicon full-bridge (10) to replace.
6. soft starter/brake for three-phase motor according to claim 5, it is characterized in that: the Continuity signal of described single-chip microcomputer (1) output also connects antiport A.C. contactor (11) by controllable silicon (2), antiport A.C. contactor (11) is also controlled peripheral motor (6), and described antiport A.C. contactor (11) is also controlled by the antiport switching signal of single-chip microcomputer (1) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010238450 CN101917144A (en) | 2010-07-23 | 2010-07-23 | Soft starter/brake for three-phase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010238450 CN101917144A (en) | 2010-07-23 | 2010-07-23 | Soft starter/brake for three-phase motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101917144A true CN101917144A (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010238450 Pending CN101917144A (en) | 2010-07-23 | 2010-07-23 | Soft starter/brake for three-phase motor |
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| Country | Link |
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| CN (1) | CN101917144A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993458A (en) * | 2015-07-13 | 2015-10-21 | 中能世华(北京)节能科技有限公司 | Intelligent asynchronous motor starting protection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2574297Y (en) * | 2002-09-24 | 2003-09-17 | 劼元（厦门）电子有限公司 | Energy-saving control device |
| CN201290087Y (en) * | 2008-08-01 | 2009-08-12 | 索肯（上海）工控成套设备有限公司 | Standby soft starter device for motor |
| CN201355797Y (en) * | 2008-11-09 | 2009-12-02 | 山东优尼特电气科技有限公司 | Electronic brake for three-phase alternating-current electromotor |
-
2010
- 2010-07-23 CN CN 201010238450 patent/CN101917144A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2574297Y (en) * | 2002-09-24 | 2003-09-17 | 劼元（厦门）电子有限公司 | Energy-saving control device |
| CN201290087Y (en) * | 2008-08-01 | 2009-08-12 | 索肯（上海）工控成套设备有限公司 | Standby soft starter device for motor |
| CN201355797Y (en) * | 2008-11-09 | 2009-12-02 | 山东优尼特电气科技有限公司 | Electronic brake for three-phase alternating-current electromotor |
Non-Patent Citations (1)
| Title |
|---|
| 《三相交流电动机用UniTech-DS-1系列电子刹车器，UniTech-DR-1系列电子软启动器，UniTech-RS-1系列电子软启动刹车器使用说明书》 20090916 中美合资山东优尼特电气科技有限公司 UniTche-DS 电子刹车器工作原理，UniTech-RS 电子软启动器工作原理，UniTech-RS 电子软启动刹车器的接线端子 8-10，19-22 1-6 , 1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993458A (en) * | 2015-07-13 | 2015-10-21 | 中能世华(北京)节能科技有限公司 | Intelligent asynchronous motor starting protection device |
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Open date: 20101215 |