CN204131095U - The anti-shake electric installation of low voltage frequency converter - Google Patents
The anti-shake electric installation of low voltage frequency converter Download PDFInfo
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- CN204131095U CN204131095U CN201420383880.0U CN201420383880U CN204131095U CN 204131095 U CN204131095 U CN 204131095U CN 201420383880 U CN201420383880 U CN 201420383880U CN 204131095 U CN204131095 U CN 204131095U
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- frequency converter
- low voltage
- relay
- signal output
- electric installation
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- 238000009434 installation Methods 0.000 title claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Motor And Converter Starters (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The utility model relates to the anti-shake electric installation of a kind of low voltage frequency converter, relay restarted by the motor comprising frequency converter and be connected with described frequency converter, and described motor is restarted power connector end relay with voltage detecting function, the first relay signal output with deferred action function, had deferred action function second relay signal output, frequency converter run signal monitoring side and frequency converter run signal locking end.The anti-shake electric installation of this low voltage frequency converter can carry out simple improvement to common low voltage frequency converter and can realize, and the frequency converter that can effectively prevent voltage ripple of power network from causing shakes electric problem, automatically realizes the self-starting of low voltage frequency converter simultaneously.In addition, the anti-shake electric installation of this low voltage frequency converter can realize low voltage frequency converter and realize going DCS chain in rolling electric process, prevents owing to shaking chain the caused motor stopping problem of DCS that electricity causes.
Description
Technical field
The utility model relates to a kind of anti-shake electric installation, is specifically related to the anti-shake electric installation of a kind of low voltage frequency converter.
Background technology
The control of the low-tension motor in modern industrial enterprises is widely used fuse-contactor circuit, i.e. FC loop.Its advantage be circuit simple and reliable, to be swift in motion and can frequent operation, electrical endurance and mechanical endurance are extremely long, are that other any control modes are irreplaceable.But when power supply runs into instantaneous loss of pressure fault, will cause motor failure because of no-voltage trip, and then production process is forced to interrupt, the enterprise especially for automation continuous prodution causes very large economic loss.For this reason, such as petrochemical industry, chemical industry, chemical fibre, generating, smelt, etc. industry have employed various types of motor self-staring device, deal with this motor failure caused because of power supply instantaneous loss of pressure, ensure the automatic restart of some loads of the utmost importance.
Existing high voltage converter maintains DC bus-bar voltage mainly through dc-link capacitance and load free parking counter electromotive force of motor when loss of power, thus realize anti-shake Electricity Functional, but this function depends on part throttle characteristics, if load is heavy loads, during anti-shake electricity, compole is short.Meanwhile, high voltage converter input side has isolating transformer, so switch cubicle protection does not arrange under-voltage protection, when system Huang electricity Time breaker of switch cabinet is non-shut-brake, sends fault-signal tripping circuit breaker by frequency converter self.
In the industrial production, consider from energy-conservation and motor running secure context, the motor that some power are larger all can adopt frequency converter to carry out drive and protection control, but along with the looped network of main electrical network and the increase of medium voltage network supply line of enterprise, enterprise is for reducing the anti-isolated component of power consumption not handicapping, like this, instantaneous loss of pressure is caused when inevasible during adjacent lines fault in major network or enterprise's medium voltage network, thus cause the protection act of frequency converter self to cause low-tension motor to be shut down, and then cause continuous flow procedure disorderly, production accident and huge loss is caused to enterprise, if think again to allow motor running need manual intervention, failure reset is carried out to frequency converter and restarts the operation of motor.
Utility model content
Technical problem to be solved in the utility model be for above-mentioned prior art provide a kind of carry out on the basis of low voltage frequency converter frequency converter that improve, that can effectively prevent voltage ripple of power network from causing shake electric problem, automatically realize the anti-shake electric installation of low voltage frequency converter that frequency converter restarts.
The technical scheme in the invention for solving the above technical problem is: the anti-shake electric installation of a kind of low voltage frequency converter, comprise frequency converter, it is characterized in that: also comprise the motor be connected with described frequency converter and restart relay, described motor is restarted power connector end relay with voltage detecting function, the first relay signal output with deferred action function, is had deferred action function second relay signal output, frequency converter run signal monitoring side and frequency converter run signal locking end;
Wherein said power connector end is connected to power supply by fuse, described first relay signal output is connected to frequency converter and controls its opening and closing by the run signal of frequency converter, described second relay signal output is connected in parallel in frequency converter by the first contactor and by the incoming telephone signal controller opening and closing of power supply, described frequency converter run signal test side is connected to described first contactor, and described frequency converter run signal locking end is connected to the DCS interlocking signal control end of frequency converter by the second contactor.
Preferably, the time of described first relay signal output and the second relay signal output deferred action is 2s.
Compared with prior art, the utility model has the advantage of: the anti-shake electric installation of this low voltage frequency converter can carry out simple improvement to common low voltage frequency converter and can realize, the frequency converter that can effectively prevent voltage ripple of power network from causing shakes electric problem, automatically realizes the self-starting of low voltage frequency converter simultaneously.In addition, the anti-shake electric installation of this low voltage frequency converter can realize low voltage frequency converter and realize going DCS chain in rolling electric process, prevents owing to shaking chain the caused motor stopping problem of DCS that electricity causes.
Accompanying drawing explanation
Fig. 1 is the anti-shake electric installation sketch of the utility model embodiment mesolow frequency converter.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in Figure 1, the anti-shake electric installation of low voltage frequency converter in the present embodiment, relay 2 restarted by the motor comprising frequency converter 1 and be connected with described frequency converter 1, and described motor is restarted the power connector end 21 relay 2 with voltage detecting function, the first relay signal output 22 with deferred action function, had deferred action function second relay signal output 23, frequency converter run signal monitoring side 24 and frequency converter run signal locking end 25;
Wherein said power connector end 21 is connected to power supply by fuse 3, can realize the power supply of motor being restarted to relay 2 on the one hand, may be used for voltage detecting on the other hand.
Described first relay signal output 22 is connected to frequency converter 1 and controls its opening and closing by the run signal of frequency converter 1, and be namely only just triggered disconnection after frequency converter 1 normally runs.
Described second relay signal output 23 is connected in parallel in frequency converter 1 by the first contactor KM and by the incoming telephone signal controller opening and closing of power supply, namely only automatically resets after incoming call successful reclosing.
The time of described first relay signal output 22 and the second relay signal output 23 deferred action is 2s, namely automatically disconnects after 2s.
Described frequency converter run signal monitoring side 24 is connected to described first contactor KM, and described frequency converter run signal locking end 25 is connected to the DCS interlocking signal control end of frequency converter 1 by the second contactor KM2.
The anti-shake electric installation of this low voltage frequency converter in use, utilize power connector end 21 detection of grid voltage, frequency converter 1 run signal monitors the run signal of the electric situation low-converter 1 of rolling by the first contactor KM, the running status of record frequency converter 1, discharge immediately at non-rolling electricity, will not keep.Revise in frequency converter 1 relevant parameter such as self-starting, o-volt protection that powers on simultaneously, frequency converter 1 is set in driving pattern and uses, prevent when occurring shaking electricity, frequency converter 1 realizes stopping to the protection of motor.
When electric situation appears shaking in electrical network, power connector end 21 detects dead electricity information, now, motor is restarted relay 2 and is entered anti-shake power mode, then the first relay signal output 22 and the second relay signal output 23 closed is connected frequency converter 1 also time delay 2s open, meanwhile, the run signal of frequency converter 1 run signal record frequency converter 1.In the process, frequency converter run signal locking end 25 realizes the function of going DCS chain to frequency converter 1 by the second contactor KM2, ensures that frequency converter 1 works on, prevents motor stopping.After the electricity that shakes terminates, line voltage recovers, and now, the first relay signal output 22 resets after receiving the normal signal run of frequency converter 1, and the second relay signal output 23 resets after receiving incoming call coincidence signal, and frequency converter 1 controls motor and normally runs.
Claims (1)
1. the anti-shake electric installation of low voltage frequency converter, comprise frequency converter (1), it is characterized in that: also comprise the motor be connected with described frequency converter (1) and restart relay (2), described motor is restarted the power connector end (21) relay (2) with voltage detecting function, the first relay signal output (22) with deferred action function, is had deferred action function second relay signal output (23), frequency converter run signal monitoring side (24) and frequency converter run signal locking end (25);
Wherein said power connector end (21) is connected to power supply by fuse (3), described first relay signal output (22) is connected to frequency converter (1) and controls its opening and closing by the run signal of frequency converter (1), described second relay signal output (23) is connected in parallel in frequency converter (1) by the first contactor (KM) and passes through the incoming telephone signal controller opening and closing of power supply, described frequency converter run signal monitoring side (24) is connected to described first contactor (KM), described frequency converter run signal locking end (25) is connected to the DCS interlocking signal control end of frequency converter (1) by the second contactor (KM2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383880.0U CN204131095U (en) | 2014-07-11 | 2014-07-11 | The anti-shake electric installation of low voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383880.0U CN204131095U (en) | 2014-07-11 | 2014-07-11 | The anti-shake electric installation of low voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204131095U true CN204131095U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420383880.0U Expired - Lifetime CN204131095U (en) | 2014-07-11 | 2014-07-11 | The anti-shake electric installation of low voltage frequency converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN204131095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843126A (en) * | 2016-05-11 | 2016-08-10 | 江苏国网自控科技股份有限公司 | Intelligent type frequency converter DC support controller and control method thereof |
| CN113311798A (en) * | 2021-06-08 | 2021-08-27 | 深圳市倍通控制技术有限公司 | Remote control circuit based on DCS/PLC and control method thereof |
-
2014
- 2014-07-11 CN CN201420383880.0U patent/CN204131095U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843126A (en) * | 2016-05-11 | 2016-08-10 | 江苏国网自控科技股份有限公司 | Intelligent type frequency converter DC support controller and control method thereof |
| CN105843126B (en) * | 2016-05-11 | 2018-07-13 | 江苏国网自控科技股份有限公司 | A kind of intelligent type frequency-conversion device DC support controller and its control method |
| CN113311798A (en) * | 2021-06-08 | 2021-08-27 | 深圳市倍通控制技术有限公司 | Remote control circuit based on DCS/PLC and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 315803 No. 168 Hongyuan Road, Qijiashan Street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Golden Hair New Materials Co., Ltd. Address before: 315801 No. 168 Hongyuan Road, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO HAIYUE NEW MATERIAL CO., LTD. |
|
| CP03 | Change of name, title or address |