Control system upgrade for cold rolling mill QUARTO-250 No.508.
Commissioning works on replacement of control system for Quarto mill 250 were completed at Kirov non-ferrous metal working plant.
The work performed resulted in replacement of mill control system that was built on basis of controllers OCTAGON and dedicated I/O boards and was brought into operation by “VNIIMETMASH” company in the early 2000s. A new control system is built on basis of automation equipment Siemens and distributed peripheral ODOT.
A new control system that was commissioned fulfills the following functions:
- • hydraulic roll screwdown control;
- • automatic gauge control;
- • roll on coiler and decoiler radius calculation system with electric motor field current regulation versus roll diameter;
- • HMI system;
- • roll passport generation.
The upgrade activities allowed reaching the following targets:
- • mill’s operational reliability improvement owing to the use of up-to-date hardware facilities;
- • improvement of system’s operational and maintenance conditions through the use of open-source software and recording of all system operating parameters to a long-term archive with possibility of further analysis;
- • improvement of quality of a rolled strip due to accurate strip gage control.