CN201039079Y - Frequency conversion control device for motor dragging system - Google Patents
Frequency conversion control device for motor dragging system Download PDFInfo
- Publication number
- CN201039079Y CN201039079Y CNU2007200315562U CN200720031556U CN201039079Y CN 201039079 Y CN201039079 Y CN 201039079Y CN U2007200315562 U CNU2007200315562 U CN U2007200315562U CN 200720031556 U CN200720031556 U CN 200720031556U CN 201039079 Y CN201039079 Y CN 201039079Y
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- contactor
- motor
- branch road
- secondary branch
- relay
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- Control Of Ac Motors In General (AREA)
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Abstract
A variable frequency control device of the motor dragging system comprises a breaker, a transducer, a motor and an AC contacting apparatus connected between the breaker and the transducer. The utility model is characterized in that a first AC contacting apparatus is connected in series between the output end of the transducer and the motor. The input end of the motor is connected with a heat relay in series, a standby self coupling reducing pressure starting loop constituted by a second AC contacting apparatus, a third AC contacting apparatus, a forth AC contacting apparatus, an autotransformer, a time relay, a middle relay, a control button and the periphery control circuit is arranged between the breaker and the relay by parallel connection. When the motor needs to be repaired, the insulation measurement and maintenance of the motor can be directly carried out only by releasing the AC contacting apparatus; after the maintenance, the AC contacting apparatus is directly closed, and the motor can resume the normal work, thus the working intensity of the maintenance staff can be reduced; when the faults of the transducer occur, the standby self coupling reducing pressure loop is started, which provides the reliable continuous production control mode.
Description
Technical field the utility model belongs to the electric control cabinet technical field, relates in particular to a kind of motor drive system frequency-converting control device.
In the start-up circuit of the existing motor drive system of background technology, inverter output terminal is connected directly to motor, as the frequency converter FRENIC 5000G11S/P11S 400V of Fuji series operational manual.Because of inverter output terminal is connected directly to motor, cause in the maintenance motor procedure, can not directly carry out insulation measurement to motor, and to dismantle frequency converter and motor line, thoroughly just energy measurement and maintenance behind the disconnection frequency converter, rewiring installation has again strengthened maintenance personal's workload after having keeped in repair.In addition, when frequency converter breaks down, do not cause motor to shut down because of there being back-up circuit, productive life is affected.
The summary of the invention the purpose of this utility model is to provide a kind of motor drive system frequency-converting control device that can alleviate maintenance personal's working strength.
For achieving the above object, the technical scheme taked of the utility model is:
A kind of motor drive system frequency-converting control device, comprise the A.C. contactor that is connected between circuit breaker, frequency converter, motor and circuit breaker and the frequency converter input, it is characterized in that one first A.C. contactor of between the output of described frequency converter and motor, connecting.
Further perfect as technique scheme, when frequency converter breaks down, for production control pattern continuously can be provided reliably, at the input of the described motor thermal relay of connecting, the standby self coupling reduced-voltage starting loop of forming by second A.C. contactor, the 3rd A.C. contactor, the 4th A.C. contactor, autotransformer, the time relay, auxiliary relay, control button and peripheral control circuit thereof also in parallel between described circuit breaker and thermal relay.
The above-mentioned motor drive system frequency-converting control device that the utility model provides, since between inverter output terminal and motor first A.C. contactor of connecting, when motor needs repairing, only need to discharge first A.C. contactor, can disconnect the line between frequency converter and the motor, just can directly carry out insulation measurement and maintenance motor, after maintenance finishes, direct closed first A.C. contactor, motor recovers operate as normal, has alleviated maintenance personal's working strength; Because standby self coupling reduced-voltage starting loop in parallel between circuit breaker and thermal relay, when frequency converter broke down, standby self coupling reduction voltage loop started, and production control pattern continuously is provided reliably, had improved production efficiency, and the living guarantee of high-quality is provided.
Appended drawings is the electrical schematic diagram of the utility model frequency-converting control device embodiment
Embodiment as shown in drawings, the first A.C. contactor KM1 and thermal relay KH connect between frequency converter FRN and motor M, the pull-in winding of the first A.C. contactor KM1 is connected with the break contact of the second A.C. contactor KM2, the 4th A.C. contactor KM4, and be serially connected on the 2. number binding post of change over switch SA, constitute the converting operation loop.
In addition, the standby self coupling reduced-voltage starting loop of forming by the second A.C. contactor KM2, the 3rd A.C. contactor KM3, the 4th A.C. contactor KM4, autotransformer QZB, time relay KT, auxiliary relay KA, the second stop button 2SBS, the second start button 2SB also in parallel between circuit breaker Q F and thermal relay KH.Wherein:
It is in parallel after the make contact of the 3rd A.C. contactor KM3 is connected with the pull-in winding of time relay KT with the pull-in winding of the 3rd, the 4th A.C. contactor KM3, KM4, connect with the break contact of auxiliary relay KA in back in parallel, connect with the circuit after the normally opened contact parallel connection of the make contact of the 3rd A.C. contactor KM3 and the second start button 2SB, the power frequency of forming standby self coupling reduced-voltage starting loop starts the secondary branch road again; Connect with the pull-in winding of auxiliary relay KA after the time-delay make contact of time relay KT and the make contact parallel connection of auxiliary relay KA, form the startup time limit secondary branch road in standby self coupling reduced-voltage starting loop; The pull-in winding of the make contact of the break contact of the 4th A.C. contactor KM4, auxiliary relay KA and the second A.C. contactor KM2 is connected, and forms the power frequency operation secondary branch road in standby self coupling reduced-voltage starting loop.
The power frequency in standby self coupling reduced-voltage starting loop starts the secondary branch road, start time limit secondary branch road, after the parallel connection of power frequency operation secondary branch road, break contact with the first A.C. contactor KM1, the normally-closed contact series connection back of the second stop button 2SBS is connected with the 4. number binding post of change over switch SA, its output is parallel on the pull-in winding of the converting operation loop first A.C. contactor KM1, connect with the break contact of thermal relay KH again, after the series connection again with frequency conversion send electric secondary branch road in parallel (frequency conversion send make contact that electric secondary props up route A.C. contactor KM0 and the normally opened contact of the first start button 1SB be in parallel after with the first stop button 1SBS, the pull-in winding of A.C. contactor KM0 is in series, belong to the prior art part), form the motor running control circuit.
The make contact of A.C. contactor KM0 and the first run signal lamp HR1 are composed in series the charged indication secondary of frequency converter branch road; The break contact of A.C. contactor KM0 and the first stop light HG1 are composed in series frequency converter outage indication secondary branch road; Be composed in series motor operation indication secondary branch road with the second run signal lamp HR2 after the make contact parallel connection of first, second A.C. contactor KM1, KM2; The break contact of first, second A.C. contactor KM1, KM2 and the second stop light HG2 are composed in series motor and stop to indicate the secondary branch road.After motor running control circuit, the charged indication secondary of frequency converter branch road, frequency converter outage indication secondary branch road, motor operation indication secondary branch road and motor stop to indicate the parallel connection of secondary branch road, its input is connected to the output of fuse FU, its output is connected to zero-power line, and the input of fuse FU is connected to the output of circuit breaker Q F.
During frequency converter FRN operate as normal, the circuit breaker Q of closing F presses the first start button 1SB, A.C. contactor KM0 coil gets electric adhesive, the self-insurance of A.C. contactor KM0 make contact, and the first stop light HG1 goes out simultaneously, the first run signal lamp HR1 is lighted, and frequency converter FRN is charged.Rotate change over switch SA then to 1 gear, change over switch SA 1., 2. number binding post is connected, the first A.C. contactor KM1 closure, the make contact closure of the first A.C. contactor KM1, frequency converter FRN is just changeing terminal FWD and CM connects, signal feeding device DFQ output 4-20mA electric current, frequency converter FRN starts, motor M converting operation, the second stop light HG2 goes out simultaneously, and the second run signal lamp HR2 is lighted.The break contact of the first A.C. contactor KM1 disconnects, and standby self coupling reduced-voltage starting loop does not start.
When frequency converter FRN breaks down, rotate change over switch SA to 2 gear, change over switch SA 1., 2. number terminal disconnects, the first A.C. contactor KM1 dead electricity discharges.Change over switch SA 3. simultaneously, 4. number terminal is connected, press second startup and meet button 2SB, the 3rd, the 4th A.C. contactor KM3, the KM4 coil gets, the 3rd, the 4th A.C. contactor KM3, the KM4 closure, start working in standby self coupling reduced-voltage starting loop, motor M power frequency reduced-voltage starting, the second stop light HG2 goes out, the make contact closure of while the 3rd A.C. contactor KM3, the pull-in winding of time relay KT gets electric adhesive, after setting time-delay, the time-delay make contact closure of time relay KT, auxiliary relay KA gets electric adhesive, the break contact of auxiliary relay KA disconnects, the 3rd, the 4th A.C. contactor KM3, KM4 and time relay K T dead electricity discharge, the make contact closure of while auxiliary relay KA, and it is closed that the break contact of the 4th A.C. contactor KM4 recovers, the second A.C. contactor KM2 gets electric closure, start-up course is finished, and the second run signal lamp HR2 is lighted, motor M power frequency operation.The second, the break contact of the 4th A.C. contactor KM2, KM4 disconnects, and the converting operation loop can not start.
Frequency converter failure is pressed the second stop button 2SBS in standby self coupling reduced-voltage starting loop after eliminating, and it is quit work.Meanwhile the break contact of the second, the 4th A.C. contactor KM2, KM4 recovers closed, restarts the converting operation loop, makes frequency converter FRN enter normal operating conditions.
Claims (3)
1. motor drive system frequency-converting control device, comprise the A.C. contactor (KM0) that is connected between circuit breaker (QF), frequency converter (FRN), motor (M) and circuit breaker (QF) and frequency converter (FRN) input, it is characterized in that one first A.C. contactor (KM1) of between the output of described frequency converter (FRN) and motor (M), connecting.
2. motor drive system frequency-converting control device according to claim 1, it is characterized in that at the input of described motor (M) thermal relay (KH) of connecting, also in parallel by second A.C. contactor (KM2) between described circuit breaker (QF) and thermal relay (KH), the 3rd A.C. contactor (KM3), the 4th A.C. contactor (KM4), autotransformer (QZB), the time relay (KT), auxiliary relay (KA), second stop button (2SBS), the standby self coupling reduced-voltage starting loop that second start button (2SB) and peripheral control circuit thereof are formed.
3. motor drive system frequency-converting control device according to claim 2, the make contact that it is characterized in that the 3rd A.C. contactor (KM3) in the described standby self coupling reduced-voltage starting loop is connected back with the 3rd with the pull-in winding of the time relay (KT), the 4th A.C. contactor (KM3, KM4) pull-in winding parallel connection, connect with the break contact of auxiliary relay (KA) in back in parallel, connect with the circuit after the normally opened contact parallel connection of the make contact of the 3rd A.C. contactor (KM3) and second start button (2SB), the power frequency of forming standby self coupling reduced-voltage starting loop starts the secondary branch road again; Connect with the pull-in winding of auxiliary relay (KA) after the make contact parallel connection of the time-delay make contact of the time relay (KT) and auxiliary relay (KA), form the startup time limit secondary branch road in standby self coupling reduced-voltage starting loop; The pull-in winding of the make contact of the break contact of the 4th A.C. contactor (KM4), auxiliary relay (KA) and second A.C. contactor (KM2) is connected, and forms the power frequency operation secondary branch road in standby self coupling reduced-voltage starting loop;
After the power frequency in standby self coupling reduced-voltage starting loop starts secondary branch road, startup time limit secondary branch road, the parallel connection of power frequency operation secondary branch road, be connected with the 4. number binding post of change over switch (SA) with the break contact of first A.C. contactor (KM1), the normally-closed contact series connection back of second stop button (2SBS), its output is parallel on the pull-in winding of converting operation loop first A.C. contactor (KM1), connect with the break contact of thermal relay (KH) again, send electric secondary branch road in parallel with frequency conversion again after the series connection, form the motor running control circuit;
The make contact of A.C. contactor (KM0) and the first run signal lamp (HR1) are composed in series the charged indication secondary of frequency converter branch road; The break contact of A.C. contactor (KM0) and first stop light (HG1) are composed in series frequency converter outage indication secondary branch road; Be composed in series motor operation indication secondary branch road with the second run signal lamp (HR2) after the make contact parallel connection of first, second A.C. contactor (KM1, KM2); Break contact of first, second A.C. contactor (KM1, KM2) and second stop light (HG2) are composed in series motor and stop to indicate the secondary branch road;
After motor running control circuit, the charged indication secondary of frequency converter branch road, frequency converter outage indication secondary branch road, motor operation indication secondary branch road and motor stop to indicate the parallel connection of secondary branch road, its input is connected to the output of fuse (FU), its output is connected to zero-power line, and the input of fuse (FU) is connected to the output of described circuit breaker (QF).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200315562U CN201039079Y (en) | 2007-04-09 | 2007-04-09 | Frequency conversion control device for motor dragging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200315562U CN201039079Y (en) | 2007-04-09 | 2007-04-09 | Frequency conversion control device for motor dragging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201039079Y true CN201039079Y (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200315562U Expired - Fee Related CN201039079Y (en) | 2007-04-09 | 2007-04-09 | Frequency conversion control device for motor dragging system |
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| CN (1) | CN201039079Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015073A (en) * | 2016-06-30 | 2016-10-12 | 冼毅 | Blower control method |
| CN106122064A (en) * | 2016-06-30 | 2016-11-16 | 冼毅 | Air compressor control circuit |
| CN106122063A (en) * | 2016-06-30 | 2016-11-16 | 冼毅 | Air compressor control device |
| CN106325197A (en) * | 2016-08-18 | 2017-01-11 | 山东九路泊车设备股份有限公司 | High safety three-dimensional garage frequency conversion intelligence control system |
| CN107959441A (en) * | 2017-12-31 | 2018-04-24 | 广州市大弘自动化科技有限公司 | A kind of multi-mode motor switching on/off circuit |
| CN108683382A (en) * | 2018-06-26 | 2018-10-19 | 河南森源电气股份有限公司 | A kind of control circuit and system of motor |
| CN107959441B (en) * | 2017-12-31 | 2024-05-31 | 永光鑫润(北京)电子有限责任公司 | Multi-mode motor power-on/off circuit |
-
2007
- 2007-04-09 CN CNU2007200315562U patent/CN201039079Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015073A (en) * | 2016-06-30 | 2016-10-12 | 冼毅 | Blower control method |
| CN106122064A (en) * | 2016-06-30 | 2016-11-16 | 冼毅 | Air compressor control circuit |
| CN106122063A (en) * | 2016-06-30 | 2016-11-16 | 冼毅 | Air compressor control device |
| CN106122063B (en) * | 2016-06-30 | 2018-05-01 | 冼毅 | Air compressor control device |
| CN106325197A (en) * | 2016-08-18 | 2017-01-11 | 山东九路泊车设备股份有限公司 | High safety three-dimensional garage frequency conversion intelligence control system |
| CN106325197B (en) * | 2016-08-18 | 2018-11-16 | 山东九路泊车设备股份有限公司 | A kind of stereo garage frequency conversion intelligent control system of high security |
| CN107959441A (en) * | 2017-12-31 | 2018-04-24 | 广州市大弘自动化科技有限公司 | A kind of multi-mode motor switching on/off circuit |
| CN107959441B (en) * | 2017-12-31 | 2024-05-31 | 永光鑫润(北京)电子有限责任公司 | Multi-mode motor power-on/off circuit |
| CN108683382A (en) * | 2018-06-26 | 2018-10-19 | 河南森源电气股份有限公司 | A kind of control circuit and system of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20110409 |