ABB PFTL101A0.5kN PFTL101A1.0kN Horizontal Force Measuring Sensor

Description

In the past 20 years, the construction of cold rolling mills in the steel industry has developed in two directions. – PFTL101A 0.5kN is a large-scale unit, continuous production, high-end control system, and networked information transmission, accompanied by the continuous production of five/six stand continuous cold rolling mill and pickling line; Correspondingly, the single stand cold rolling mill has small production scale, less one-time investment in equipment, flexible production organization, fast variety and specification transformation and small batch size. It is the so-called “small ship is easy to turn around”. Enterprises can respond to market demand sensitively and adjust production quickly. Therefore, the single stand cold rolling mill has not died out in the competition in the steel equipment market, but has won the broad market in small and medium-sized steel production enterprises.

In large cold rolling mills, PFTL101A 0.5kN, due to the continuity of production, the wide variety of process parameter setting data and the large amount of data transmitted, the secondary computer system and mathematical model are necessary tools and tools for production process management informatization and production process automation, and are indispensable standard configurations. For the single stand cold rolling mill with small production scale, the configuration of independent secondary computer system will increase the overall investment and weaken the important feature of low one-time investment threshold of equipment. In addition, the secondary computer system usually needs to be managed and maintained by computer professionals, which is also a restrictive condition for small and medium-sized private steel enterprises with large personnel mobility. Therefore, the single stand cold rolling mill of most existing private iron and steel enterprises is not equipped with a secondary computer system.
“Mathematical model embedded in AC 800PEC controller” developed by ABB
From the perspective of high-end electronic control system for small and medium-sized users, while maintaining the original small-scale and flexibility of the unit, ABB has purposefully invested and innovatively developed the solution of “mathematical model embedded in AC 800PEC controller”, making the mathematical model of preset calculation independent of the original secondary computer system and directly embedded in the core of the controller, It adds some bright colors to the original common single stand cold rolling mill electric control system, which has prominent advantages, mainly shown in: the investment in upgrading and transformation is minimized; Improve strip surface quality and shape; Reduce the out of tolerance length of strip steel thickness; Increase output; Reduce threading accidents; Improve the service life of rolls.
The AC 800PEC is a top ABB controller with superior performance. PFTL101A 0.5kN single AC 800PEC controller can realize all automation functions of a single stand cold rolling mill, including cold rolling mill process control (thickness control, roll gap control, work roll bending control), speed setting value generation, speed distribution, automatic speed reduction, tension control, single drive setting and control, coil tracking, system communication, as well as rolling in and out areas of the mill, coil unloading sequence control, roll change, Basic automatic sequence control such as rolling line adjustment; Auxiliary system control of process cooling, lubrication, hydraulic and other fluid media.
The AC 800PEC controller (three programmable levels for different applications) has the ability to seamlessly integrate Matlab models. This provides a unique advantage for the embedded controller of complex mathematical model with self-learning function. The rolling mill model has complete preset calculation and adaptive capability for different specifications and materials. Matlab models can be integrated without conversion, ensuring the accuracy of the model to the greatest extent. The adaptive optimization mathematical model embedded in the AC 800PEC eliminates the human intervention factors to the greatest extent, ensures the continuity and stability of the rolling process, and greatly improves the inconsistency of quality and output caused by the difference in the level of operators.
It is used in the core of the C language code layer of the AC 800PEC controller for pre setting at the first level, which is direct and efficient. The calculation results cover the following aspects: calculation of rolling pass table (reduction distribution calculation of each pass); Calculation of preset values of process parameters; Control loop gain calculation of actuator; Self learning modification of the model.
2. The concept contained in the “model-based” ABB single stand cold rolling mill system upgrade plan
Since the 2008 financial crisis, the global economy has entered a downward cycle and has been in a long-term downturn. The steel industry bears the brunt of the impact, which is increasingly severe; The price of steel has been at a low point in the past 10 years, and even the price of steel has been lower than that of cabbage; All steel companies face the same challenge of trying to maintain weak profitability. Accordingly, the main countermeasures for profitability and survival issued by the steel manufacturers are similar in three aspects:
◆ Optimize operation cost and reduce production consumption;
◆ Improve productivity;
◆ Improve product quality and maintain competitive vitality.
In order to promote the sales volume, try to maintain the market share in the market overcapacity, so as to improve the profitability of the enterprise itself, and improve the product quality will undoubtedly become the main driving force for users to make equipment investment choices.
Many single stand cold rolling mills invested and built in China have a history of 10-15 years, or even longer, and cannot compete with rolling mills that have been launched in the past five years, equipped with new electric control systems and more advanced automatic control means. These single stand cold rolling mills in stock are not outdated from the perspective of mechanical equipment. They do not need to completely replace the large transformation of the electric control system platform, but only need to upgrade the “small-scale” economic and customized version to improve their competitiveness and profitability. Such “private customized” electric control system transformation/upgrading/upgrading can maintain the youth and vitality of the rolling mill and keep the rolling mill at a high level. The investment scale and investment efficiency are the most important factors for decision-makers.

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