PWM variable frequency drive

for the textile industryfor water treatmentfor the cement industry

STEP, a Chinese famous brand of VFD manufacture, has more than 25 years experience in this VFD field, provide the high quality products for different applications. With the advanced technology and strong R&D team, STEP have a very good reputation in the automation industry. STEP VFD ‘s high efficiency, energy saving, fast response, high reliability help customers realized their value in the automation of the variety of industries.  Features and Advantages 1.High –efficient & energy saving operation STEP low voltage variable frequency drive with High –efficient & energy saving operation and new PWM dead zone compensation technology, motor consumption can be effietivly reduced, achieving maximum power saving rate.  2.Fast dynamic response STEP VFD advanced motor mode control can also quickly response to load change without PG card. 3.Smooth tracking start At any time, mooth start can be perfectly achieved without impacting the rotating motor. 4.Powerful grid adaptability Automatic voltage adjustment function: when the grid voltage changes, the output voltage can be automatically kept constant. In the case of sussden loss of electricty, unqie non-blockour function can keep VFD running. 5.Stable operation with low frequency and high torque. Dynamic calcultion of IGBT internal temperature ensures that the IGBT module operates with the temperture limits, improving reliablity of the module. 6.Positive-reverse switch When positive-reserve motor switch to the zero-speed, the phase of current has no change or oscillation, and speed has no ripple. 7. Rapid acceleration 0.1s full load acclleration with fast torque response and low speed overshoot.