... drive (VFD AC drives ) for AC motors as speed controller and energy saver 380Vac 3 PHASE vector control commodity: VFD ... frequency inverter = AC drives = varialble frequency drive(VFD) = speed controller = variable speed drive (VSD)KOC-P5 series made by KCLY electric Co ... 2 kinds of information meantime, like frequency, current, voltage, speed, time, and PID data. 2. Independent cooling channel design ...