Using VFD for speed regulating has many advantages. Many small power motors adopt single phase power supply. How to use VFD to regulate speed for single phase motors? ATO will provide the following methods.
The wire drawing machine is one of the main equipment of the metal wire processing as well as the cable and wire industry. It is mainly used to process the metal wires into the fine lines of various specifications. It usually constitutes the paying off, water cooling, winding up, winding displacement and other components. Its electric drive part is mainly realized by paying-off motor, winding-up motor and winding displacement motor. The wire drawing machine belongs to the constant-torque load. Its characteristics require that the VFD has a big start-up torque and can satisfy the full-load output in low speed. Meanwhile, it requires realizing the coordinated control of several motors in high precision percentage.
At present, different processing means and processing technologies constantly emerge. Although the traditional technical approach is also refining, it still can't satisfy the present processing demand. Laser drilling is the earliest practical laser processing technology. It is also one of the main application fields of the laser processing. The materials with high rigidity and melting point can't realize some of their technological requirements through the traditional processing means. However, it is totally not difficult to achieve through laser drilling.
When the roots blower has went through improvement by VFD, the system can realize soft starting and soft stopping, so as to reduce the shock of the system to the power grid in start-up, thus reducing the system start-up times and ensuring a stable operation. What's more, because of the deceleration of the revolving speed in roots blower operation, it can reduce the mechanical wear and prolong the operating life of both the motor and the roots blower. If the system employs pressure closed-loop control improvement, the fully automatic control and unattended operation can be realized.
In recent years, as the increasing drastic market competition and the improving of the electromechanical integration technology in textile machinery, the textile machines at home and abroad generally enter into the era of frequency control and drive. The frequency control of the speed regulating replaces the traditional machine structure. It has been widely adopted to the shuttleless loom and basic textile equipment, such as blowing, cotton carding, lap forming, roving, spinning, spooling, warping, slashing, and the other main technological processes. What is more, the newly developed textile machines have adopted VFD to control motor speed without an exception, which has greatly improved the reliability of the textile machine, textile quality and automation degree.
Here ATO will take the application of high-performance vector VFD in a CNC machine factory as an example, to discuss about the frequency conversion control technique of CNC machine.
The advantages of VFD controls plastic extrusion machine
Except laser cutting, laser welding and laser marking technology, laser drilling is also one of the most important processing technologies in the mobile phone manufacturing. Because the laser can concentrate the energy in a very small area and it is controlled through the computer, it is very convenient to satisfy the processing requirement accurately.
It can be concluded that the nanosecond fiber laser has a bigger processing thermal influence to the soft materials like the battery electrode. Its laser beam is easy to cause big damage to the processing area and the surrounding area in processing. However, the picosecond fiber laser will bring fewer damages to the close areas in processing. It is feasible to employ the picosecond fiber laser to replace the traditional processing mean and the nanosecond laser in processing the electrode of the lithium-ion battery.
The automobile manufacturers adopt the advanced steel to weld the on-line laser welding system and employ the fiber laser cutting device to conduct deep processing of the auto sheet. The laser welding equipment of tailored blanks has the full-automatic feeding and blanking mechanical arm as well as the full-automatic workpiece matching organism. Coordinated with the fiber welding connection and welding seam tracking system, it is mainly used to process the metal material products and the sheet workblank of the inner and outer surface of the automobile.
The traditional cutting technology includes flame cutting, plasma cutting, water jet cutter cutting, linear cutting, punch processing and so on. As an emerging technology in the recent years, laser cutting irradiates the laser beam with very high energy density to the workpiece ready to be processed, so that the locality will be heated and melted. Then high-pressure gas is used to blow away the slag and form the cutting seam.
In industrial manufacturing, laser is one of the most preferred marking technologies. Metal, plastic, ceramic and other materials can all be marked by the laser in wave length 1064nm (infrared ray), 532nm (green ray) and 355nm (ultraviolet ray). As a high-tech tool, the laser can be appropriate to mark numbers, texts, bar code and matrix code. For example in the figure below, laser marking on plastic bottle, adapter, container seal and ear tags.
The active carbon filter can absorb the gas, peculiar smell and pollutant inhalable in the air, including the potential dangerous and carcinogenic chemical products and so on. The indoor air will be filtered and cycled through the active carbon filter and then be returned to the surrounding environment or discharged to the outside. This air filtering mean has been certified by the environmental protection agency (EPA). It has become the first choice because of the outstanding adsorptive property of the active carbon, thus being widely used. With the increasing demand to the quality of the indoor air, the manufacturer of the air filtering product can manufacture the standard and customized-designed active carbon filter through the fiber laser technology, so as to reach the requirements of OEM customers. Through using the fiber laser cutting system, the processing speed of most components of these OEM customers has promoted for 60%.
The glasses are widely used in the architecture, daily product, medical, chemical, home furnishing, electronic product, instrument, nuclear engineering and other fields. The glass is fragile. Therefore, it has a high technology to engrave on the surface of the glass products. The laser marking machine adopts non-contact processing, with short processing time and refined marking line. It can be used to make refined marking on the glass, such as any complicated character, image, pattern, trademark, LOGO, bar code, matrix code, batch number, signature and so on. All these can be completed with the laser marking machine. The following are the laser marking processes of glass products.
The laser marking technology is one of the biggest application fields in laser processing. The laser marking can print out various characters, symbols and patterns. The character size can be ranged from the millimeter to micron dimension. This is of special significance to the refined processing of the product. As a modern precise processing mean, the laser marking technology has significant advantages compared with the traditional means of corrosion, electrosparking, mechanical carving, and printing processing.
Compared with the traditional processing technology, the advantage of the fiber laser cutter in the food machinery manufacturing is extremely outstanding. The traditional processing mean requires die sinking, punching, shearing, bending and several other links. It has low working efficiency, big mold consumption and high operation cost. All these have hindered the steps of the food machinery industry to conduct innovative development.
At present, most electronic products, such as the main board of the mobile phone, computer and other key elements have identifications of traceable information. At the present stage, it is commonly adopted the ink label paper to stick on the product. However, such a mean has many problems, big amount of consumables, high pollution, high labor cost, the marks are easy to be eliminated and so on. Aimed at such condition, replacing the label paper by the laser marking code has become a tendency of the industry. With the automatic PCB laser marking machine, bar code, two-dimension code and character, pattern and other information can be marked on the printing circuit board and the relevant components.
Compared with the surface processing technology of the traditional metal nameplate, the appearance of the fiber laser marking machine succeeds in solving a series of difficult problems. Its characteristics lie in the high marking precision, fast speed and stable performance. Printing ink and other mediums are not required to cover the metal surface. Marks will be made on the surface of the nameplate directly with the laser. In addition, it is controlled through computer. It has easy operation and can print various kinds of complicated patters, characters, QR codes and other contents.
The aesthetic appreciation is the nature of every woman. Jewelry is an indispensable decoration of females. In purchasing the jewelry
, the texture, color, appearance, workmanship and the peculiarity are elements must be considered in purchasing. Since most of the jewelry is made of gold, silver, Pt, diamond or other expensive raw materials, the requirements to the workmanship are also very high. As an advanced processing equipment, the fiber laser marking machine has become the first choice of numerous jewelry processing manufacturers because of its exclusive advantage.
The variable frequency drive has the following ten protections on the motor:
Over-voltage protection: The variable frequency drive output has automatic voltage regulator function to control the external overtop power input to be not exceed the motor rated voltage.
