Brazilian steel maker Companhia Siderúrgica Nacional and steel technology supplier Russula have completed the first phase of the complete automation and drives modernization for the two-strand slab continuous caster 4 in Volta Redonda in Brazil. The main objective was to replace obsolete APC cards, which have been discontinued and no longer supported by the manufacturer. Fifty-eight DCV 700 drives were replaced with new ABB DCS880 drives. The switchover occurred in a record time of six days during a shutdown in January 2022.58 Drives Retrofitted in 6 DAYS at CSN 2 Strand Slab CasterDAY 1 - Replacement of 29 drives for slab strand GDAY 2 - Replacement of 29 drives for slab strand HDAY 3 - Drives' installation check and commissioningDAY 4 - Network and cold testing of the slab strands G and H\\DAY 5 - Hot testing of the complete systemDAY 6 - Slab production restarts
Brazilian steel maker Companhia Siderúrgica Nacional and steel technology supplier Russula have completed the first phase of the complete automation and drives modernization for the two-strand slab continuous caster 4 in Volta Redonda in Brazil. The main objective was to replace obsolete APC cards, which have been discontinued and no longer supported by the manufacturer. Fifty-eight DCV 700 drives were replaced with new ABB DCS880 drives. The switchover occurred in a record time of six days during a shutdown in January 2022.58 Drives Retrofitted in 6 DAYS at CSN 2 Strand Slab CasterDAY 1 - Replacement of 29 drives for slab strand GDAY 2 - Replacement of 29 drives for slab strand HDAY 3 - Drives' installation check and commissioningDAY 4 - Network and cold testing of the slab strands G and H\\DAY 5 - Hot testing of the complete systemDAY 6 - Slab production restarts
