Industry 4.0 is one of the ten future projects proposed in the German government's "High Technology Strategy 2020". It is divided into three themes: "Smart Factory", which means that equipment can communicate with each other and operate independently in a smart networked production process; "Smart Production", which means the production logistics management and human-machine interaction of enterprises; and "Smart Logistics", which mainly integrates logistics resources through the Internet, the Internet of Things, and the logistics network to fully realize the effective allocation of resources. From this, we can basically understand several key words of Industry 4.0: digitalization, intelligence, and personalization.
With Germany proposing Industry 4.0 and my country also promoting the transformation of its traditional manufacturing industry, the definition of frequency converters, especially high-end frequency converters, has changed against this backdrop. Xiaoying believes the main trends are as follows:
Precise control
Since the first AC frequency converter was introduced, frequency converter control has undergone four major revolutions, from simple speed regulation to torque control, and even to position control. Frequency converters are no longer limited to fan and pump drives. In motor drives in printing and packaging and more sophisticated equipment, the market has put forward more refined requirements for frequency converter control.
So, how can we achieve more precise control? As we all know, most high-end frequency converters currently use vector control technology. Vector control relies on accurate motor parameters to achieve the desired control effect in the equivalent DC motor control process. Therefore, obtaining accurate motor parameters is the foundation of precise frequency converter control. Only on this basis can we achieve stable speed control, precise torque control, and high-precision position control, enabling us to handle various high-end applications with ease.
In the motor self-learning process, INVT takes into account various dynamic factors of the motor, such as the influence of the skin effect of the stator, which effectively improves the accuracy of motor learning.
In terms of torque control, a new type of phase-locked loop was designed, which effectively improved the stability and accuracy of torque output.
In high-precision closed-loop control, multi-isolation digital filtering technology is adopted, which can effectively remove interference signals even under harsh conditions of near-field coupling at 100 meters, and achieve high-precision speed control and position control with an error of no more than 1 pulse.
Personalization
"Technology for people" means that the most advanced technologies often achieve complex functions with simple operations. Industry 4.0's personalized requirements also create a demand for customized frequency converters. Under the national requirements of "reducing inventory, reducing overcapacity, deleveraging, lowering costs, and addressing weaknesses," frequency converter users, from inventory preparation to use, all hope to have a set of baseline modules that allow them to customize the functions of their frequency converters; or, they need a product that can be integrated on demand, providing full-drive and all-around functionality, reducing management costs on the one hand, and facilitating secondary development by users on the other.
The INVT Goodrive350 is such a product. Simply add a PLC card to the GD350 frequency converter to program the PLC program according to your needs and achieve the target control. If the customer's equipment is installed high, or if it is inconvenient to open the cabinet door or otherwise operate the frequency converter, you can choose wireless commissioning. Just add a Bluetooth/WIFI card to control the frequency converter via your mobile phone, achieving local or remote monitoring. Its powerful expandability can meet various needs simultaneously. "Simplicity is the ultimate sophistication" is one of the fundamental design principles of the Goodrive350.
Digitalization
Li Yizhong, vice chairman of the Economic Committee of the National Committee of the Chinese People's Political Consultative Conference, former minister of the Ministry of Industry and Information Technology, and president of the China Federation of Industrial Economics, said that intelligent manufacturing is a very broad and extensive concept, and it should start with building automated production lines, digital workshops, and smart factories.
Five key areas to focus on include: first, digital R&D and design; second, integrating electronic information technology into products to improve their quality, functionality, and added value; third, CNC-based manufacturing equipment, with extensive use of high-end CNC machine tools and industrial robots; fourth, intelligent manufacturing processes, upgrading production lines from automation to intelligence; and fifth, building upon the aforementioned material foundations, establishing a new set of manufacturing service technical standards and procedures, along with an intelligent management system, to achieve scientific organization of work processes and precise control of various key indicators.
It is evident that the digitalization of Industry 4.0 ultimately cannot bypass high-speed and secure data exchange. As a key component in industry, frequency converters must also be able to meet the needs of various mainstream communication methods. The GD350 is a frequency converter that supports multiple mainstream communication methods, such as CAN, PROFINET, and PROFIBUS-DP. At the same time, the GD350 also supports IoT access, enabling interconnection and intelligent manufacturing.
