... .2KW inverter VVVF control, constant,vairable torque mode VD4 series single phase, 220V AC 1.5~2.2KW inverter ... Running functionCommand modeOperated by three mode: digital panel, control terminal, serial portFrequency setting modeSetting modes can be selected ,including: ... code setting mode; serial port setting mode;UP/DOWN terminal setting mode;analog voltage setting;analog current setting; pulse ...