ABB ACS380-042S-12A2-1 machinery drive. ABB ACS380-042S-12A2-1 is an ACS380 machinery drive rated 200-240 V AC, single-phase. This 042S version provides high filtering: emc category c2 and is the standard bmio-01 i/o and modbus variant. It supports compact OEM machinery, conveyors, mixers, packaging equipment and material handling applications.