Altivar ATV212 Variable Speed Drive The Altivar ATV212 inverter is an updated version of the earlier ATV21 variable speed motors from Schneider Electric Frequency controllers for three-phase squirrel-cage motors Available as standard IP21 and IP55 protection Less than 35% THDi harmonics due to Innovative C-less technology Embedded Building management communication protocols Output control frequency: 0.5 to 200Hz Incorporates 3 logic inputs, 2 analogue inputs, 2 logic outputs and one configurable analogue output Specific applications: building, heating, ventilation, air conditioning