Chosinthira ma frequency a ship vector cha VFD6900C chogwira ntchito bwino kwambiri ndi chosinthira ma frequency a ventor champhamvu chomwe chimagwira ntchito bwino kwambiri. Chokhala ndi mphamvu yoyambira yamphamvu, mphamvu yochulukirapo, komanso chithandizo chowongolera ma current ndi voltage, chili ndi ntchito zoteteza zonse monga overcurrent, overvoltage, undervoltage, block faults, electronic thermal appliances, overheating, short circuit, input and output phase loss, normal motor parameter tuning, ndi internal energy storage failure.