A PLC BASED CONTROL SYSTEM FOR MULTIPLE STAND TANDEM FINISHING MILL OF HOT STRIP MILL.

摘要

A PLC based speed control system for multiple stand tandem finishing mill of hot strip mill (HSM), such as a six stand tandem finishing mill of Hot Strip Mill to facilitate data entry related to the process parameters with ease and with reliability of flexible and adaptable automation in functioning of the system. The system of the invention involves a distributed control system comprising Controllers, Human Machine Interface (HMI) systems, communication controllers and the like whereby the sub-systems can be effectively and beneficially integrated for better user friendly purposes to the operator of the system. The present invention is adapted to favour data entry in WinCC, calculations in WinCC as well as PLC with adaptability for switchover to and from existing system to ensure minimal shut down and maximum plant output. The system is capable to improve uptime and better diagnostic facility and favour stabilization of finishing mill controls on cobbles arising out of failure of computer systems.