... power is unsteady ,it can output regulator voltage)3)PID control and frequency wobbulatefunction4) 8 sorts ... featuresControl mode1.Sensorless vector control2.V/F control 3.high torque control Speed precision±0.5% ... 10sCommunictaionRS485 interfaceProtectionoverload, overvoltage,undervoltage, open phase,Short-circuit,over temperature,motor overload,AI openedAdjustable range1/100SizeOutline Dimension275* ...