control system: VVVF Control, Quiet running, High efficient , Various design. ... 71504400×7150×250015004800195×2145×2140502025301660160050004554251. Using 32 bit high speed CPU, the most advanced VVVF system and full digital control, it runs ... promoting and controlling and is a powerful computer intelligent control system which integrate computer technology, automatic operation, Network reading, ...