S7- 300 a fully automated control of curved continuous caster in wuxi

S7- 300 full automatic control application in wuxi a curved continuous caster newmaker welcome to e exhibition hall 1 furnaces/metallurgical machinery exhibition hall continuous casting machine, rolling mill, melting furnace, water-cooled, electric iron core,. 。 。 Process overview of low head slab continuous caster in recent years, due to the improvement of the pure steel production technology, continuous casting machine for small radius production without large inclusions arc partial poly slab have created favorable conditions, due to the development of the multipoint straightening and continuous straightening technique, has made the past must be the coagulation of straightening crack sensitive steel can take heart in straightening, radius of continuous casting machine is no longer a factor of the limit speed. Under the background of this technique, a kind of small radius ( R = 3。 5 - - 8 meters) Multipoint straightening of arc slab continuous caster is regarded as a new slab continuous casting machine model of the more attractive. Because this model equipment highly relatively general arc slab continuous casting machine, R = 8 - - 12. 5 meters) Overview of Siemens PLC controller control in industry, metallurgy industry, in particular, has a mature control technology. On the low-end products and high-end products, on the basis of their control system stable performance, easy to extend the network architecture, full compatibility between devices and moderate prices by widespread application in each domain, has the very high cost performance. Arc continuous caster control unit, involving machine, electricity, instrument, fluid, automation. This article from the system of the reasonable area and control, reasonable control technology specification and reliable control method on system configuration and software design. Control system design of the continuous casting machine including control system designed by the ma on shan Custer engineering technology co. , LTD. , the debugging, the practice proved that the system has high stability, strong operability, easy maintenance, and improve the degree of automation control idea, the system can be from the three aspects to introduce the hardware design thought. Control system is introduced the system design of the I/O point around 1000, PLC centralized control, do not use the remote control unit in a way that configuration. On the design of the control mode is divided into local and remote control, remote and have hands on, automatic control, the realization of automation. Design fully into the I/O points on the PLC system, it simplifies the electrical design, but for the stability of the control system configuration and software design, higher requirements are put forward. Independent PLC control points area, single area, each with peer-to-peer network connection between PLC and profibus-dp communication interface, FDL protocol for data exchange. Two HMI terminals and a touch screen at the scene. The hardware configuration of PLC adopts high performance - 315 2 dp, PLC controller is 314 pcu mould. Crystallizer is an independent system, with the main system of PLC controller, FDL protocol for exchanging data with peer-to-peer network connections, and mold control itself has two 200 PLC, through the MPI interface constitute the MPI network. This configuration extension module is IM360/361 architecture, configuration used in the special 8 channel pulse meter FM350 - da 2, used to track length of flow line production, in order to achieve the goal of automatic tracking control. Touch screen USES the south Korean M2I company 5 sad 7 series. 5 inch screen. Area on the basis of process control, reasonable control areas: the secondary cooling in the distribution of water distribution, automatic interlock control, the control of the hydraulic pressure station and streamline tracking and synchronization control, cutting area table, dummy bar control, control and auxiliary control mould. Interlock control 1) A unit of interlock alarm control thought: by running the signal feedback through application processing judge of the unit circuit. 2) Unit between the interlocking control thought: must be from the personal safety and equipment life and safety consideration, a comprehensive collection of interlocking signal, to classify the important and not important signal can realize the function of emergency treatment or emergency stop, the maximum to meet production needs. 3) Interlocking system information classification: to realize the automation of production safety, must be comprehensive classified the direct and indirect information of the whole system, achieve operability, integrity of the system. 4) Tracking and interlock control: by encoder feedback quantity into instant speed and accumulative total casting length, then through calculation for different roller diameter roller synchronous operation. Casting length to realize the dummy bar follow up and roller interlocking action, including two tracking response of the cold water valve and cut off valve. 1) data transmission Data transmission design used in four ways: MPI, DP, RS232, IM360/361; The touch screen is accept RS232 interface, through 315 integration under the DP interface of PC adapter adapter, which used to extend the communication distance 85 signal amplifier. 2) Peer DP network data communication: sending data function block FC5 AG_SEND function block and accept data FC6 AG_RECV, configuration in NET_PRO connection, connection type is FDL agreements. 4. Humanized design, operability of HMI. In the main interface design effect and the aspect in the cold water control idea are being geared to international general pattern. Conclusion the company to undertake designing and debugging of the system of mechanical design, SanDian and process a full range of engineering design work, with the optimal investment, mature control system and service well received by party a.
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