CN207265915U - A kind of 15kW frequency-conversion control cabinets - Google Patents
A kind of 15kW frequency-conversion control cabinets Download PDFInfo
- Publication number
- CN207265915U CN207265915U CN201721054524.4U CN201721054524U CN207265915U CN 207265915 U CN207265915 U CN 207265915U CN 201721054524 U CN201721054524 U CN 201721054524U CN 207265915 U CN207265915 U CN 207265915U
- Authority
- CN
- China
- Prior art keywords
- frequency
- conversion
- electrically connected
- motor
- control circuit
- 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.)
- Active
Links
Landscapes
- Motor And Converter Starters (AREA)
Abstract
It the utility model is related to a kind of 15kW frequency-conversion control cabinets, including frequency converter, frequency conversion main circuit and linear quadratic control circuit, frequency conversion main circuit is in parallel with motor main circuit and is electrically connected with motor, linear quadratic control circuit includes frequency conversion/power frequency switching circuit and signal control circuit, frequency conversion/power frequency switching circuit includes change-over switch, change-over switch is electrically connected with frequency conversion contactor and power frequency contactor for controlling electric motor starting, signal control circuit includes start button, stop key and starting relay, the normally opened contact of starting relay and the normally opened contact of frequency conversion contactor are connected between the startup input terminal of frequency converter and common port.The utility model can control by Frequency Converter Control soft starter for motor and detect the rotating speed of motor frequency conversion startup, control accuracy is high, enables motor smooth starting, and the utility model can realize the soft start to multiple electric motors, improves the efficiency of motor control.
Description
Technical field
It the utility model is related to converter technology field, more particularly to a kind of 15kW frequency-conversion control cabinets.
Background technology
In the prior art, during electric motor starting, to avoid motor from directly initiating, mechanical shock is caused to motor, influences motor
Performance and used life, generally using soft start by the way of, the mode of common electric soft start is typically reduced-voltage starting,
The soft starting circuit of special one relay control of design in motor controlling cabinet, this soft starting circuit control accuracy is relatively low, opens
Dynamic voltage and motor speed cannot be controlled flexibly, be unfavorable for controlling and grasp the operating status of motor, therefore, this soft start side
Formula cannot meet the needs of motor control.
Utility model content
Technical problem to be solved in the utility model, which is to provide, a kind of avoids that motor directly initiates and control accuracy is high
15kW frequency-conversion control cabinets.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of 15kW frequency-conversion control cabinets, including frequency conversion
Device, frequency conversion main circuit and linear quadratic control circuit, the frequency conversion main circuit is in parallel with motor main circuit and is electrically connected with motor, institute
Stating linear quadratic control circuit includes frequency conversion/power frequency switching circuit and signal control circuit, and the frequency conversion/power frequency switching circuit includes turning
Switch is changed, the change-over switch is electrically connected with frequency conversion contactor and power frequency contactor for controlling the electric motor starting, described
Signal control circuit includes start button, stops key and starting relay, the normally opened contact of the starting relay and described
The normally opened contact of frequency conversion contactor is connected between the startup input terminal of the frequency converter and common port.
As preferable technical solution, the start button includes rotating forward start button and reversion start button, described to open
Motor type relay includes rotating forward starting relay and reversion starting relay, and the rotating forward start button starts relay with described rotate forward
Device is electrically connected to form forward control circuit, and the reversion start button and the reversion starting relay are electrically connected to form reversion control
Circuit processed, the forward control circuit is in parallel with reverse turn control circuit, described to stop key and the forward control circuit and anti-
Turn control circuit electrical connection.
As preferable technical solution, the rotating forward starting relay is electrically connected with motor and rotates forward indicator light, the reversion
Starting relay is electrically connected with motor reversal indicator light.
As preferable technical solution, described stop key also is electrically connected with shutdown indicating circuit, described to shut down instruction electricity
Road includes halt indicator, and starting relay and the normally-closed contact for inverting starting relay of rotating forward refers to the shutdown
Show that lamp string joins.
As preferable technical solution, the frequency conversion contactor and power frequency contactor be electrically connected frequency conversion indicator light and
Power frequency indicator light.
As preferable technical solution, the linear quadratic control circuit further includes buzzer circuit, the buzzer circuit bag
Frequency converter relay and buzzer are included, the frequency converter relay is connected in the frequency converter failure with the buzzer.
As preferable technical solution, the number of motors of the Frequency Converter Control be one and more than, the frequency converter electricity
At least one frequency conversion main circuit is connected with, the linear quadratic control circuit includes at least a frequency conversion/power frequency switching circuit.
As preferable technical solution, voltage detector component and electricity are also electrically connected with the input main electrical scheme of the frequency converter
Flow detecting element.
As preferable technical solution, the frequency converter is also electrically connected with speed probe.
By adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model passes through frequency converter control
Soft starter for motor processed, can control and detect the rotating speed of motor frequency conversion startup, and control accuracy is high, enables motor smooth starting,
The utility model can realize the soft start to multiple electric motors, improve the efficiency of motor control.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the circuit diagram of the utility model embodiment.
Embodiment
As shown in Figure 1, a kind of 15kW frequency-conversion control cabinets, including frequency converter, frequency conversion main circuit and linear quadratic control circuit, frequency conversion
Main circuit is in parallel with motor main circuit and is electrically connected with motor, and linear quadratic control circuit includes frequency conversion/power frequency switching circuit and letter
Number control circuit, it is preferred that the number of motors of Frequency Converter Control be one and more than, frequency converter is electrically connected with least one frequency conversion
Main circuit, linear quadratic control circuit include at least a frequency conversion/power frequency switching circuit.
Frequency conversion/power frequency switching circuit includes change-over switch, and change-over switch is electrically connected with the frequency conversion for controlling electric motor starting
Contactor and power frequency contactor, signal control circuit include start button, stop key and starting relay, starting relay
The normally opened contact of normally opened contact and frequency conversion contactor is connected between the startup input terminal of frequency converter and common port.
Start button include rotate forward start button and reversion start button, starting relay include rotate forward starting relay and
Starting relay is inverted, start button is rotated forward and is electrically connected to form forward control circuit with rotating forward starting relay, reversion startup is pressed
Key is electrically connected to form reverse turn control circuit with reversion starting relay, and forward control circuit is in parallel with reverse turn control circuit, stopping
Button is electrically connected with forward control circuit and reverse turn control circuit.
Rotate forward starting relay and be electrically connected with motor rotating forward indicator light, reversion starting relay is electrically connected with motor reversal and refers to
Show lamp.
Stop key and be also electrically connected with shutdown indicating circuit, shutting down indicating circuit includes halt indicator, rotate forward startup after
The normally-closed contact of electric appliance and reversion starting relay is connected with halt indicator.
Frequency conversion contactor and power frequency contactor have been electrically connected frequency conversion indicator light and power frequency indicator light.
Linear quadratic control circuit further includes buzzer circuit, and buzzer circuit includes frequency converter relay and buzzer, frequency conversion
Device relay is connected in frequency converter failure with buzzer.
Voltage detector component and current measuring element are also electrically connected with the input main electrical scheme of frequency converter.
Frequency converter is also electrically connected with speed probe.
In the present embodiment, the number of motors of Frequency Converter Control is 2, i.e. No. 1 motor and No. 2 motors, and frequency converter is electrically connected
There are 2 frequency conversion main circuits, linear quadratic control circuit includes 2 frequency conversions/power frequency switching circuit and is respectively used to switching No. 1 motor and 2
Frequency conversion/power frequency operation of number motor.
Change-over switch SQ1 is used to switch No. 1 motor power frequency/converting operation, No. 1 electric motor starting of change-over switch SQ1 and control
Frequency conversion contactor KM2 and power frequency contactor KM1 be electrically connected, power frequency contactor KM1 is parallel with No. 1 power frequency indicator light HL1, frequency conversion
Contactor KM2 is parallel with No. 1 frequency conversion indicator light HL2, power frequency contactor KM1 and is interlocked with frequency conversion contactor KM2；Change-over switch SQ2
Frequency conversion contactor KM4 and power frequency contactor KM3 with controlling No. 2 electric motor startings are electrically connected, and power frequency contactor KM3 is parallel with No. 2
Power frequency indicator light HL3, frequency conversion contactor KM4 are parallel with No. 2 frequency conversion indicator light HL4.
SB1 is off button, and SB2 is to rotate forward start button, and KA1 is that motor rotates forward starting relay, and KA1 is parallel with electricity
Machine rotates forward indicator light HL5；SB3 is reversion start button, and KA2 is motor reversal starting relay, and KA2 is parallel with motor reversal
Indicator light HL6, motor rotate forward starting relay KA1 and motor reversal starting relay KA2 and interlock；Motor rotates forward starting relay
The normally-closed contact of KA1 and motor reversal starting relay KA2 is electrically connected with halt indicator HL7.
The rotating forward of frequency converter starts the normally opened contact and KM2 that KA1 is electrically connected between input terminal X1 and common port COM
Normally opened contact, the reversion of frequency converter start the normally opened contact and KM4 that KA2 is electrically connected between input terminal X2 and common port COM
Normally opened contact.
Frequency converter relay is electrically connected with buzzer, during frequency converter failure, between the RA ends and RB ends of frequency converter relay
There is voltage output, start buzzer.
By taking No. 1 motor as an example, when starting motor, change-over switch SQ1 is pushed into frequency conversion position, presses rotating forward start button
SB2, motor rotate forward starting relay KA1 and obtain electric, and motor rotates forward that indicator light HL5 is bright, and frequency conversion contactor KM2 obtains electric, frequency conversion contact
The normally opened contact closure of device KM2, No. 1 frequency conversion indicator light HL2 is bright, and the rotating forward of frequency converter, which starts input terminal X1, signal input, becomes
Frequency main circuit is connected, and motor frequency conversion starts, and the rotating speed of motor is adjusted by the potentiometer on frequency converter, is examined by speed probe
Measured motor rotating speed, shows motor speed on frequency converter；When motor reaches setting speed, change-over switch SQ1 is pushed into power frequency
Position, power frequency contactor KM1 obtain it is electric, its normally opened contact closure, No. 1 power frequency indicator light HL1 is bright, frequency conversion contactor KM2 dead electricity,
Normally opened contact disconnects, and No. 1 frequency conversion indicator light HL2 goes out, and motor is changed to power frequency operation, presses stop button SB1, makes signal control
Circuit dead electricity, starts No. 2 motors in the same way.
The step of No. 1 motor reversal operation of control, is same as above.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (9)
1. a kind of 15kW frequency-conversion control cabinets, including frequency converter, frequency conversion main circuit and linear quadratic control circuit, it is characterised in that：It is described
Frequency conversion main circuit is in parallel with motor main circuit and is electrically connected with motor, and the linear quadratic control circuit includes frequency conversion/power frequency switching
Circuit and signal control circuit, the frequency conversion/power frequency switching circuit include change-over switch, and the change-over switch, which is electrically connected with, to be used for
The frequency conversion contactor and power frequency contactor of the electric motor starting are controlled, the signal control circuit includes start button, stops pressing
The normally opened contact of key and starting relay, the normally opened contact of the starting relay and the frequency conversion contactor is connected on the change
Between the startup input terminal and common port of frequency device.
A kind of 2. 15kW frequency-conversion control cabinets as claimed in claim 1, it is characterised in that：The start button, which includes rotating forward, to be started
Button and reversion start button, the starting relay include rotating forward starting relay and reversion starting relay, the rotating forward
Start button is electrically connected to form forward control circuit with the rotating forward starting relay, the reversion start button and the reversion
Starting relay is electrically connected to form reverse turn control circuit, and the forward control circuit is in parallel with reverse turn control circuit, the stopping
Button is electrically connected with the forward control circuit and reverse turn control circuit.
A kind of 3. 15kW frequency-conversion control cabinets as claimed in claim 2, it is characterised in that：The rotating forward starting relay is electrically connected
There is motor to rotate forward indicator light, the reversion starting relay is electrically connected with motor reversal indicator light.
A kind of 4. 15kW frequency-conversion control cabinets as claimed in claim 2, it is characterised in that：It is described stop key also to be electrically connected with stop
Machine indicating circuit, the shutdown indicating circuit include halt indicator, the rotating forward starting relay and the reversion startup after
The normally-closed contact of electric appliance is connected with the halt indicator.
A kind of 5. 15kW frequency-conversion control cabinets as claimed in claim 1, it is characterised in that：The frequency conversion contactor and power frequency contact
Device has been electrically connected frequency conversion indicator light and power frequency indicator light.
A kind of 6. 15kW frequency-conversion control cabinets as claimed in claim 1, it is characterised in that：The linear quadratic control circuit further includes bee
Ring device circuit, and the buzzer circuit includes frequency converter relay and buzzer, and the frequency converter relay is in the frequency converter
Connected during failure with the buzzer.
A kind of 7. 15kW frequency-conversion control cabinets as claimed in claim 1, it is characterised in that：The number of motors of the Frequency Converter Control
Be one and more than, the frequency converter is electrically connected with least one frequency conversion main circuit, and the linear quadratic control circuit includes at least one
A frequency conversion/power frequency switching circuit.
A kind of 8. 15kW frequency-conversion control cabinets as claimed in claim 1, it is characterised in that：On the input main electrical scheme of the frequency converter
Also it is electrically connected with voltage detector component and current measuring element.
A kind of 9. 15kW frequency-conversion control cabinets as claimed in claim 1, it is characterised in that：The frequency converter is also electrically connected with rotating speed
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721054524.4U CN207265915U (en) | 2017-08-22 | 2017-08-22 | A kind of 15kW frequency-conversion control cabinets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721054524.4U CN207265915U (en) | 2017-08-22 | 2017-08-22 | A kind of 15kW frequency-conversion control cabinets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207265915U true CN207265915U (en) | 2018-04-20 |
Family
ID=61925732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721054524.4U Active CN207265915U (en) | 2017-08-22 | 2017-08-22 | A kind of 15kW frequency-conversion control cabinets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207265915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293593A (en) * | 2020-02-21 | 2020-06-16 | 海南中谨润城环境绿化工程有限公司 | Power control cabinet |
| CN112737423A (en) * | 2020-12-23 | 2021-04-30 | 安徽新诺精工股份有限公司 | Motor control circuit and control method of numerical control machine tool |
-
2017
- 2017-08-22 CN CN201721054524.4U patent/CN207265915U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293593A (en) * | 2020-02-21 | 2020-06-16 | 海南中谨润城环境绿化工程有限公司 | Power control cabinet |
| CN112737423A (en) * | 2020-12-23 | 2021-04-30 | 安徽新诺精工股份有限公司 | Motor control circuit and control method of numerical control machine tool |
| CN112737423B (en) * | 2020-12-23 | 2024-05-03 | 安徽卓朴智能装备股份有限公司 | Motor control circuit and control method of numerical control machine tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207265915U (en) | A kind of 15kW frequency-conversion control cabinets | |
| CN205407654U (en) | Food preparation machine circuit and food preparation machine | |
| CN102120072A (en) | Control and polling inspection integrated electrical system of fire pump group | |
| CA2690691C (en) | Starting circuit for single-phase ac motor and method for starting single-phase ac motor | |
| CN111935352B (en) | BLDC remote control system of wide-bandgap semiconductor device based on mobile phone APP Bluetooth | |
| CN203340016U (en) | Energy-saving controller for three-phase alternating-current asynchronous motor | |
| US20170223903A1 (en) | Method of controlling speed change of a pruning machine | |
| CN202009263U (en) | Three-way power supply automatic switching module | |
| CN202177688U (en) | Integrated test system for airplane electric accessory motor-type test | |
| CN109141177A (en) | A kind of displacement sensor for digital output modul | |
| CN215186518U (en) | Position-sensorless control system for brushless direct current motor | |
| CN201664638U (en) | Centrifuge automatic control system | |
| CN203645590U (en) | Driving device of stepping motor | |
| CN104236895A (en) | Mechanical characteristic detection circuit of high-voltage circuit breaker | |
| CN204349840U (en) | Liquid resistance starting cabinet resistance automatic preparing device and the starting cabinet with this device | |
| CN203071851U (en) | Starting cabinet for variable-frequency drive | |
| CN203399041U (en) | Frequency conversion speed regulating device of high-power alternating-current winding motor | |
| CN206099822U (en) | Dc motor soft start device based on AT89C51 singlechip | |
| CN204334387U (en) | Digester mixing plant static frequency converter | |
| CN209642576U (en) | A kind of horizontal lathe electric control circuit | |
| CN109761463A (en) | Digester mixing plant static frequency converter | |
| CN204179969U (en) | A kind of motor start circuit of medical centrifuge | |
| RU101751U1 (en) | PUMP BLADE CONTROL AND POSITION DEVICE | |
| CN201160267Y (en) | AC single-phase electric motor speed governing and steadying circuit | |
| CN203434896U (en) | Motor positive and negative rotation constant power and constant speed control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |