The inverter is an essential accessory in industrial use, and its main function is to regulate the speed of the motor. It is widely used in various equipment such as production F-line and machine tools. Many engineering people have touches.
The functions of the inverter are many, the parameters are complex, and it is difficult to play without professionals. Even some electricians don't know how to debug the inverter. People who don't have any foundation will be even more confused when they get a frequency converter in the future. If you encounter a little problem, you have to call the inverter manufacturer. The function that the manufacturer has not taught, and basically does not know how to use it. Many of the very useful functions planned by engineers can only be wasted. For engineers who often touch the inverter, it is necessary to systematically learn the inverter. As for newbies, how should they learn more efficiently?
Reading
There are many books on frequency converters. For beginners, just learn how to use the inverter. As for the principle, I can leave it alone for the time being. With a certain foundation, it is possible to deepen the learning principle.
Learning anything is the same, as long as you understand the principle, you can use it sensitively. You can know it, and you can know why it is. For the study of the principle of inverter, reading books is the best way.
The advantage of reading books is that you can learn systematically. The content of the book is carefully organized by the author. It is more systematic and comprehensive than the articles on the Internet. Especially when it comes to formulas, diagrams, calculations, etc., books are a great way to show them.
Read the article
Web articles, although not as structured as books, are worth reading. Now the network is so developed and there is a lot of information. The overall level of online articles is definitely worse than that of books. And, many of the articles are cobbled.
The best way to read articles on the web is to look them up with questions. Find relevant content quickly. For example, if you want to understand the concept of "carrier frequency", you can find many articles.
Watch the video
Video learning is a great way to learn. Nowadays, people's moments are fragmented, and it is already a very luxurious thing to take out a large chunk of time to read quietly. Now that video is so developed, there are many experts who make video content. As long as you have the heart, you can find a lot of learning resources you want.
Discussion Statement
The clarification is a direct description of the specific product, and the description of the function is more precise than any other information. Once you have some understanding of some basic concepts, it is time to deepen the discussion and clarification book.
Whether it's reading books, reading articles, or watching videos, you can only learn some general knowledge. For the inverter in your own hand, you still have to study the book thoroughly.
Hands-on
Holding an inverter, I practiced on the clarification book and performed it one by one. See if the results are consistent with what you understand, and if they do, look up the relevant information or ask someone who understands.
This step is the most critical, no matter how much you learn the theory, you must also carry out practical operation in order to apply it sensitively. In the process of use, it is necessary to think more, combine with the actual use of the occasion, and choose the appropriate function, in order to play the largest role of the inverter.
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Control the hovering function operation and principle of the inverter - Sunland inverter
How does the hovering function of the inverter work?
When the speed of the asynchronous motor is 0, the encoder response is meaningless, and it needs to be converted to V/F control, and the frequency is set to 0; The voltage is set to 0 speed at which the motor promises to withstand the current at the moment ...
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At the physical level, the stable operation of the inverter is guaranteed-Senlan inverter
For the most popular electrical control equipment inverter (Variable-frequency Drive, VFD), as a precision electronic industrial control equipment, in order to run smoothly for a long time, we, as professional and technical personnel, need to be on the VFD device or before the operation.
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The difference between vector and general use of frequency converter
1. The control accuracy of the vector type is higher than that of the general type.
2. The vector type has a large output torque at low speed, which can make the motor get a larger starting torque, and is suitable for use in the occasion of heavy load starting, such as: high-power long belt, hoist, etc. If it is used in some of the more common fields ...
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Introduction of Sunland inverter
1. Obtain accurate motor parameters from low to high parameters at different frequencies, and establish motor models of corresponding frequency bands in different frequency segments, so that the inverter can control the motor from low to high.
2. V/F control
(1) It is possible to select 15 pre-set V/...
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Methods to reduce the maintenance cost of inverter - Senlan inverter
Frequency converter is a widely used equipment in modern factories. This is a very expensive new type of equipment, and the maintenance price of the inverter is also very expensive, so in the process of using the inverter, we should pay attention to the use of the inverter.
Thing...
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What are the peripheral equipment for inverter selection - Senlan inverter
After the inverter selection is completed, it is necessary to consider whether other peripheral equipment needs to be equipped according to the actual situation of the site. The peripheral equipment for frequency converter selection mainly includes circuit breakers, reactors, contactors, braking resistors, etc.
1. Circuit breaker
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Inverter remote control wiring method - Senlan
1. Connect X (switching input) drive terminal to control the inverter start-stop/forward and reverse rotation;
2. Connect to the AI (analog input) terminal to control the frequency of the inverter (perhaps made into PID closed-loop control active conditioning frequency)
3. Other DO (switching output) is used for transmission ...
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The control mode of low-voltage general-purpose inverter - Sunland inverter
Voltage Space Vector (SVPWM) Manipulation Method:
It is based on the premise of the overall generation effect of the three-phase waveform, with the intention of approximating the ideal circular rotating magnetic field trajectory of the motor air gap, generating the three-phase modulation waveform at one time, and controlling it by approaching the circle with inscribed polygons. In practice, ...
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Inverter dustproof method - Sunland inverter
1. Plan a special inverter room
When the power of the inverter is large or the number is large, a special inverter room can be planned. The doors, windows and cable holes in the room need to be sealed to avoid dust ingress; It is necessary to plan air filtration equipment and circulation channels to adhere to the normal indoor air ...
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The method of selecting the appropriate peripheral equipment for the inverter - Senland
When we have selected a suitable Variable-frequency Drive (VFD), we also need to consider whether we need to equip other peripheral equipment according to the actual situation of the site. The peripheral equipment selected by VFD mainly includes circuit breakers, reactors, contactors, braking resistors, etc.
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Inverter with no-load operation debugging steps - Sunland inverter
The following four steps are very important for the commissioning of the inverter with the machine (i.e., connected to the motor) and no-load (i.e., the motor without load).
(1) Set the power of the motor, the number of pole pairs, and determine the working current of the inverter.
（ ...
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Inverter line control mode - Senlan inverter
Each inverter (Variable-frequency Drive, VFD) is subject to different line control, and the methods of voltage control and current control can be divided into two categories, one is voltage type and the other is current type. The control mode can also be divided into voltage control and current type. The main circuit method and ...
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Motor encoder and rotor pole phase zero alignment repair - Sunland
1. Phase alignment method of incremental encoder
The alignment between the phase of the UVW electronic transmutation signal and the phase of the rotor pole, or the phase of the TV spot, of the incremental encoder with the signal exchange is as follows:
1) Use a DC power supply to pass the UV winding of the motor to less than the amount of ...
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Sunland inverters are designed for environmental requirements
1. The ambient temperature ---- is generally "-10-+40°C"; Derating between 40 and 50°C, the additional output current must be reduced by 1% for every 1°C increase. If the ambient temperature is too high and the temperature changes greatly, the insulation of the inverter will be greatly reduced, which will affect the life of the inverter.
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Common brand inverter modification power method - Senlan inverter
What are the advantages of inverter power correction? Many brands of inverter power boards, driver boards, and motherboards can be universal, as long as the type, volume, and hardware are the same, and the desired power and voltage value can be obtained by correcting the manufacturer's parameters.
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The selection of the speed control mode of the universal inverter - Senland
How to choose the speed control form of the general inverter: the general inverter is also known as the high-performance inverter, the PG-free vector inverter, and the torque control inverter, why? Originally, the main speed control form is different, so how to choose the speed control form of the inverter?
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Inverter heat dissipation treatment in use - Sunland inverter
If you want to make the inverter last a long time, you must seriously consider the problem of heat dissipation. Because the failure rate of the inverter increases exponentially with the increase of temperature, the service life decreases exponentially with the increase of temperature. A 10 degree increase in ambient temperature halves the service life of the inverter. Thus...
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The difference between Sunland inverter and soft starter
What is a frequency converter?
The inverter is a converter that converts the communication electricity with fixed voltage and frequency into the communication electricity with variable voltage and frequency, which is called the inverter. It is mainly used in the local demand for speed regulation, and its output not only changes the voltage but also changes the frequency together; The soft engine is really ...
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The difference between a voltage signal and a current signal
The general voltage in industry is 0... 5(10)V or current 0(4)... 20mA is used as an analog signal transmission method, and it is also a method often used by program control machines. So what is the difference between the transmission method of voltage and current, and when to choose what method, the following will be briefly introduced.
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Inverter maintenance method - hope sunland
1. Look
After taking over a faulty inverter, remove the inverter shell and clean it up, and carefully investigate the appearance, shape, and integrity of the relevant components on the circuit board with both eyes according to the type of inverter fault. This method is about charging resistors, filter electrolytic capacitors, IG ...
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