... is used in close loop control systemsSimple PLC which can achieve multi-speed, quasi winding and unwinding function ... variable speed drives (VSD), Frequency Invert(AC Drives), Soft Starters, Electrical AC Motor, Induction motor, Brake Units, EMI ... , SYCOTEC, KB ELECTRONICS, TDE MACNO SPA, GEFRAN, CONTROL TECHNIQUES, PEPPERL FUCHS, GRUNDFOS, VEM MOTORS, BR INDUSTRIE ... V/F PLC simple function speed control