Abstract
Hoist the main blast furnace control system is the guarantee for the normal production of one of the key equipment. Blast furnace in the production of the main winch controller is the core of the most critical control equipment, once the main winch on the expected failure of maintenance and adjustment is very troublesome, will lead directly to the blast furnace production of stagnation, resulting in BF Feeding disruption to the production of iron-smelting result in major economic loss. Iron making blast furnace production process of high and low degree of automation， molten iron directly restrict the quantity and quality. So the main blast furnace blast furnace iron making winch is one of the important links. BF expected winch system is the key to the production of iron-smelting equipment, primary role is to iron-smelting of raw materials required to continue to blast furnace, the blast furnace iron making guarantee the normal needs， taking into account the expected rate, Equipment reserve requirements and other factors, generally selected Dandong double-double motor vehicle winch system. This article will conduct analysis and discussion.
On the PLC in a blast furnace and converter to achieve the main winch control of conventional cars expected on the basis of a rotating encoder pulse a position feedback, expected to achieve the precise control of the displacement of the main controller of the smart application. LK used to change the original series of mechanical contact with the main shortcomings of the high failure rate. PLC program designed to achieve through the expected slowdown for cars and speed signals, the digital control signals in place and improve system reliability and location accuracy control. The design is based on the PLC control, configuration software monitoring display, Drives governor of BF ingredients automatic control system, and PLC control system as the core. The four kinds of raw materials for the design of the batching system, PLC, Siemens converter for the S7-300, SchneiderATV71.Feeding the AC drive system using the Siemens 6 SE70 vector-type converter and PLC combination to achieve. PLC program to the development of the Siemens Step7 as a software platform, using the object-oriented programming techniques, modular design, so that the system has good portability and maintainability.
