... VDE0660, IEC947-5-1 (1990), GB14048.5 standards, multi-control functions with small size, light weight, durable, resistant to ... and other industries. A. the contactless controller is suitable for DC 50V, below 300mA current, the loop controlled by ... PC / PLC C. the contactless analog controller is suitable for Frequency Control, DC Speed, reversible main transmission and auxiliary transmission of ...