Upgrade of control system for double-side varnish coating machine.
The specialists of our company have finished start-up and commissioning activities on upgrade of control system for double-side varnish coating machine Е-3 at AO «RUSAL SAYANAL», the town of Sayanogorsk, as part of the eponymous project developed by CJSC «ASC».
10 thyristor converters for main machine drives were changed for Sinamics DMC converters; new incremental speed sensors were installed instead of existing tachogenerators. Automation system was executed on basis of S7-1500 controller by «Siemens». Control of auxiliary mechanisms of the machine and speed matching system for transport mechanisms of the machine were implemented too (earlier it functioned with analog control boards). The main control station was replaced; new operator panel TP1900 was installed.
The upgrade activities resulted in simplification of control and diagnostics of the machine. Usage of more reliable and state-of-the-art equipment allowed reducing the equipment downtimes significantly.