CN201623689U - Frequency-conversion control cabinet - Google Patents
Frequency-conversion control cabinet Download PDFInfo
- Publication number
- CN201623689U CN201623689U CN201020174122XU CN201020174122U CN201623689U CN 201623689 U CN201623689 U CN 201623689U CN 201020174122X U CN201020174122X U CN 201020174122XU CN 201020174122 U CN201020174122 U CN 201020174122U CN 201623689 U CN201623689 U CN 201623689U
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- Prior art keywords
- frequency
- circuit
- cabinet
- power
- conversion control
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- Expired - Fee Related
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Abstract
The utility model discloses a frequency-conversion control cabinet. The frequency-conversion control cabinet comprises a cabinet body and an electric element and a frequency converter which are respectively arranged in the cabinet body, wherein an air inlet is formed at the lower part of the cabinet body; and a voltmeter, an ammeter, a frequency-conversion running indicating lamp, a power-frequency running indicating lamp, a running stop lamp, a failure indicating lamp, a variable-frequency/0/power-frequency button, an operating button, a stopping button and a voltage change-over switch for a frequency converter control board are respectively arranged on a panel of the cabinet body; the frequency converter comprises a main frequency-conversion control circuit and a frequency-conversion control circuit, wherein the main frequency-conversion control circuit is connected to a motor M through an air switch QF, a circuit breaker QF1 and a contactor KM1 and via a power supply circuit; and a power-frequency control circuit is connected to the motor M through a circuit breaker QF2, a contactor KM2 and a thermorelay RF. The frequency-conversion control cabinet has the advantages of simple installation, convenient operation, saved electric energy, improved device efficiency and the like.
Description
Technical field
The utility model relates to a kind of frequency converter.
Background technology
Fast development along with electronic technology, variable-frequency control technique increasingly mature, the relative decline of frequency converter price, frequency converter has obtained use more and more widely, but its professional carries out on-the-spot design, installation, debugging and must train the user of service, and the cycle is long and loaded down with trivial details.
Summary of the invention
The utility model is intended to overcome the deficiencies in the prior art, one variable frequency control cabinet is provided, solved above-mentioned problem, it is that an ABB is the group control unit of core with the frequency converter, and on-the-spot only the needs inserted input power supply, input signal and output cable and simply be provided with as required and can conveniently use.
A kind of variable frequency control cabinet of the present utility model, by cabinet be arranged in the cabinet electric elements and frequency converter and form, bottom at cabinet is provided with air inlet, and the panel of cabinet is provided with voltmeter, ammeter, converting operation indicator light, power frequency operation indicator light, operation stopping light, malfunction indicator lamp, frequency conversion/0/ power frequency button, operation button, stop button and Frequency Converter Control dish voltage change-over switch.
As further improvement of the utility model, described frequency converter is to be made of variable frequency control main circuit and frequency conversion control circuit, and the variable frequency control main circuit is through air switch QF, circuit breaker Q F by power circuit
1, contactor KM
1To motor M; The power frequency control circuit is through circuit breaker Q F
2, contactor KM
2,Thermal relay RF is to motor M.
As further improvement of the utility model, frequency conversion control circuit selects circuit, status display circuit and power frequency protection circuit to form by the power frequency frequency conversion.
It is the group control unit of core with the ABB frequency converter that variable frequency control cabinet of the present utility model is one, and the scene only need be inserted input power supply and output cable and simply be provided with as required and can conveniently use, and its installation is simple, easy to operate.And this variable frequency control cabinet possess variable frequency control must all advantages, that is:
(1) energy-saving and frequency-variable: the variable frequency control cabinet is energy-conservation mainly to be shown in the application of blower fan, water pump.For the reliability that guarantees to produce, various manufacturing machines all leave certain surplus capacity when the power drive of design adapted.When motor can not move under full load, except that reaching the power drive requirement, unnecessary moment had increased the consumption of active power, causes waste of electric energy.When using frequency control, if traffic requirement reduces, can meet the demands, thereby realize the effect of saves energy by the rotating speed that reduces pump or fan;
(2) power factor compensation: reactive power not only increases the heating of line loss and equipment, the reduction of power factor that main is causes the reduction of electric network active power, a large amount of reactive energy consumption are in the middle of circuit, the equipment service efficiency is low, waste is serious, after the use RHVC, because the effect of the inner filter capacitor of variable frequency control cabinet, thereby reduced reactive loss, increased the active power of electrical network
(3) soft start: when motor passed through the direct hard reboot of power frequency, it will produce 5 to 7 times motor rated current.This current value will increase the electric stress of motor windings greatly and produce heat, thereby reduce the life-span of motor.Frequency control then can start (also can suitably add torque magnification) in the zero-speed no-voltage.In case the relation of frequency and voltage is set up, the variable frequency control cabinet just can drive load according to V/F or vector control mode and carry out work.Use frequency control can fully reduce starting current, 1.5 times, improve the winding holding capacity, the most direct benefit of user is exactly that the maintenance cost of motor will further reduce, the starting current of the motor of motor is generally less than the then corresponding increase of life-span of rated current.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic diagram of the utility model variable frequency control main circuit;
Fig. 3 is the schematic diagram of the utility model frequency conversion control circuit.
Embodiment
A kind of variable frequency control cabinet of the present utility model, by cabinet be arranged in the cabinet electric elements and frequency converter and form, be provided with air inlet 2 in the bottom of cabinet 1, the panel of cabinet is provided with voltmeter 3, ammeter 4, converting operation indicator light 5, power frequency operation indicator light 6, operation stopping light 7, malfunction indicator lamp 8, frequency conversion/0/ power frequency button 9, operation button 10, stop button 11 and Frequency Converter Control dish 12 voltage change-over switchs, as shown in Figure 1.
Frequency converter is to be made of variable frequency control main circuit and frequency conversion control circuit, and the variable frequency control main circuit is through air switch QF, circuit breaker Q F by power circuit
1, contactor KM
1To motor M; The power frequency control circuit is through circuit breaker Q F
2, contactor KM
2,Thermal relay RF is to motor M.The variable frequency control main circuit mainly is that the break-make of power supply is controlled; physical circuit as shown in Figure 2; the 380V power supply input variable frequency control cabinet main switch of outside input; end opening comes out to insert respectively work frequency circuit and frequency changer circuit then; work frequency circuit is protected by thermal relay, and frequency changer circuit then carries protection by frequency converter self.
Frequency conversion control circuit selects circuit 13, status display circuit 14 and power frequency protection circuit 15 to form by the power frequency frequency conversion, and as shown in Figure 3, frequency conversion control circuit mainly is to the selection of power frequency and variable frequency control and demonstration effect.
Claims (3)
1. variable frequency control cabinet, by cabinet be arranged in the cabinet electric elements and frequency converter and form, it is characterized in that being provided with air inlet (2) in the bottom of cabinet (1), the panel of cabinet is provided with voltmeter (3), ammeter (4), converting operation indicator light (5), power frequency operation indicator light (6), operation stopping light (7), malfunction indicator lamp (8), frequency conversion/0/ power frequency button (9), operation button (10), stop button (11) and Frequency Converter Control dish (12) voltage change-over switch.
2. a kind of variable frequency control cabinet as claimed in claim 1 is characterized in that frequency converter is to be made of variable frequency control main circuit and frequency conversion control circuit, and the variable frequency control main circuit is through air switch QF, circuit breaker Q F by power circuit
1, contactor KM
1To motor M; The power frequency control circuit is through circuit breaker Q F
2, contactor KM
2,Thermal relay RF is to motor M.
3. a kind of variable frequency control cabinet as claimed in claim 2 is characterized in that frequency conversion control circuit selects circuit (13), status display circuit (14) and power frequency protection circuit (15) to form by the power frequency frequency conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020174122XU CN201623689U (en) | 2010-04-29 | 2010-04-29 | Frequency-conversion control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020174122XU CN201623689U (en) | 2010-04-29 | 2010-04-29 | Frequency-conversion control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201623689U true CN201623689U (en) | 2010-11-03 |
Family
ID=43027143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020174122XU Expired - Fee Related CN201623689U (en) | 2010-04-29 | 2010-04-29 | Frequency-conversion control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201623689U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744020A (en) * | 2013-12-23 | 2014-04-23 | 大连佳林设备制造有限公司 | Multifunctional incoming motor detection testing stand |
| CN106452274A (en) * | 2016-06-29 | 2017-02-22 | 南京中船绿洲机器有限公司 | Frequency conversion-power frequency-frequency conversion control method based on separator |
| CN110645196A (en) * | 2018-06-27 | 2020-01-03 | 宜兴市创联自动化设备有限公司 | Fan measurement and control intelligent control cabinet |
-
2010
- 2010-04-29 CN CN201020174122XU patent/CN201623689U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744020A (en) * | 2013-12-23 | 2014-04-23 | 大连佳林设备制造有限公司 | Multifunctional incoming motor detection testing stand |
| CN106452274A (en) * | 2016-06-29 | 2017-02-22 | 南京中船绿洲机器有限公司 | Frequency conversion-power frequency-frequency conversion control method based on separator |
| CN110645196A (en) * | 2018-06-27 | 2020-01-03 | 宜兴市创联自动化设备有限公司 | Fan measurement and control intelligent control cabinet |
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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 |
Granted publication date: 20101103 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |