... parameter autotuning function 3,The inverter is much 220V 380V fan type inverter1,0.25-2.2KW,220V; 0.4-400KW ... ,380V2,The fan inverter positive/negative logic switch input signal for option3,45KW ... ,ISO certification approved5,Built-in simple PLC,Built-in PID regulator 220V 380V fan type inverter