... the overplay function for all kinds of given source, And the frequency control mode is very flexible. 6.Abundant function ... different clients. 7.Customization function design :program running, wobble frequency running, PID control operation , timing function ,counter function ect ... : <0.5G Scope of application: ZVF9V-G series frequency inverter applied at the metallurgy, plastomer,textile, food-stuff ...