As a world-class steel power, the metallurgical industry is one of the most important traditional pillar industries in China. Metallurgical automation is playing an increasingly important role as the structural adjustment of steel grades is accelerating at an effective pace. Due to historical reasons, the frequency converters used in the metallurgical industry are mostly international brands that are compatible with equipment. In recent years, domestic products have gradually stepped in, but they are mainly used in auxiliary equipment such as fans and pumps.
Recently, the world's leading industrial automation brand Delta Electronics Group, the high-end magnetic field vector control universal C2000 series inverter for high-end application market demand, with its high-speed, pulse positioning, dual rated load and other functions and good dynamic response performance The rapid acceleration and deceleration characteristics and high cost performance have been successfully applied to the roller table control of a rolling mill, which has improved the reliability and stability of the equipment and has been recognized by customers.
At present, the roller conveyor is basically driven by a single inverter to drive multiple motors . Each motor directly drives a single roller. The difficulty of frequency conversion is that: because the same group of rollers is driven by a frequency converter, each The performance of the motor cannot be completely consistent. In addition, the different degrees of wear of the work rolls will result in inconsistent load of the same group of motors, which may result in the motor voltage of the load being light may exceed the rated value, resulting in insulation degradation of the motor, especially causing AC communication. The magnetic circuit of the motor is saturated; the roller motor is generally far away from the speed regulating device, the cable is long, and the field environment is rather harsh, and the insulation of the cable and the motor is lowered due to high temperature and humidity. In addition, the output voltage of the inverter is a PWM waveform. When the impedance at both ends of the cable does not match, traveling wave reflection will occur, and the peak voltage of the motor will also cause deterioration of the motor and cable insulation.
The C2000 series uses magnetic field-oriented vector control, which not only can be used for speed control but also can be used as servo position control. At the same time, position control can achieve point-to-point positioning and unique dynamic response performance, which can well meet the above control requirements. In addition, C2000 series inverters have the following performance advantages:
ï¬ Excellent speed/torque/position control mode, dual rated design (ND general load/HD heavy load);
ï¬ Excellent four-quadrant torque control and torque limit;
ï¬ Induction motor and synchronous motor control are integrated into one machine;
ï¬ Built-in Delta PLC function, safe parking function, brake braking unit;
ï¬ Drive system networking;
ï¬ Synchronous positioning control function;
ï¬ Long life design and life detection of important parts;
ï¬ Enhanced environmental tolerance and protection;
ï¬ Global safety regulations are compatible with CE/UL/CUL;
ï¬ Modular design is easy to maintain and expand;
ï¬ High-speed communication interface with built-in CANopen and MODBUS and optional PROFIBUS-DP, DeviceNet, MODBUS TCP, EtherNet/IP Cards.
With the continuous improvement of the degree of automation, the inverter transformation technology will be widely used in various processes in the metallurgical industry. Whether it is energy-saving transformation or process modification, the frequency conversion speed regulation technology plays an increasingly important role. The excellent performance of C2000 inverter in the metallurgical industry is deeply loved by users. With the wider application of the market, C2000 inverter will have more room for development.
About Delta Electronics Group
Founded in 1971, Delta Electronics has become the world's largest supplier of ODM power supplies and a major supplier of DC fans, consumer electronics components, video, communications networks and industrial automation. In 2008, the group's revenue exceeded $5.3 billion.
With the mission of "environmental protection, energy saving, and love of the earth", Delta is committed to improving product efficiency and developing alternative energy products, and implementing the concept of green design and production. Since 2006, the new global factory has adopted the concept of green building. The Tainan Tainan Plant is the first factory building in Taiwan to receive the "Diamond Grade" Green Building Mark certification, saving 30% energy and 40% than ordinary buildings. % of water resources.
In the field of industrial automation, Delta has accumulated professional experience in power electronics and control technology. Since the production of inverters in 1995, the product line has expanded continuously. Now it has three series of drive, control and motion, complete and reliable. The automation products, and with the infinite innovation, make the world automation technology continue to advance.
About Zhongda Dentsu
Founded in Shanghai in 1992, Zhongda Dentsu Co., Ltd. shoulders the mission of environmental protection, energy saving and love of the earth. It is committed to the perfect combination of high-efficiency energy-saving technology and application engineering to provide high-quality, environmentally-friendly power energy and video display for industrial users. , industrial automation integration solutions and services.
Zhongda Dentsu has passed ISO9001, ISO14001 and other international certifications. It has also taken the lead in implementing the EU RoHS Directive and established a supplier evaluation system to ensure that the raw materials are in compliance with relevant environmental regulations and provide high-quality, environmentally-friendly technology products for industrial users. The 35 branches and service outlets throughout the country can respond to customer needs in a timely manner and create competitive advantages.
In the field of industrial automation, Zhongda Dentsu relies on the high-quality products of the parent company Delta to provide high-quality products, in-depth understanding of the industry's process to provide tailor-made integration solutions and global warranty services, to pay tribute to the majority of industry customers, customer areas Through textiles, machine tools, printing, packaging, building, machinery and many other industries.
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