Drives & Controls Magazine May 2023

n TECHNOLOGY DELTA ELECTRONICS HAS launched a range of open-loop, variable-torque drives for fan, pump and compressor applications at the 2023 Hannover Messe. The VP3000 drives have been designed to make machinery more efficient and to reduce harmonic distortion in a wide range of fluid applications. By using a film cap technology instead of traditional electrolytic capacitors, Delta has lowered the drives’ harmonic distortion to 35% – below the level specified in the EN 61000-3-2 standard, which requires a THDi (total harmonic distortion) of less than 48%. The drives support a variety of highefficiency motors including induction, permanent magnet and synchronous reluctance types, in ratings from 0.75– 630kW. They comply with SIL3 safety requirements and support STO (safe torqueoff). Built-in EMC filters provide electromagnetic compatibility to C2/C3. According to Delta, the new drives’high power densities will allow cabinet volumes to be 23% smaller “on average”. In some cases, volumes could be reduced by as much as 55%. “For fluid machine operation, customers are now looking for high efficiency to reduce energy and CO2, lower harmonic distortion and user-friendly functions,” says Landers Yeh, a product manager in Delta’s Industrial Automation business group for the EMEA region. “By offering higher power density of 23%, a lower cabinet volume on average, and low harmonic distortion down to THDi 35%, the VP3000 is able to satisfy regulations across Europe, the Middle East and Asia. We’re confident this new variabletorque drive is going to be very competitive.” High-power versions of the drives can be mounted in durable, easy-tomaintain floor modules, which increase space utilisation and simplify assembly for easier, faster operation. The new drives have a built-in predictive maintenance functions for key components, helping users to schedule servicing procedures. Drives use film capacitors to cut harmonic distortion to 35% Delta’s new VP3000 drives save space and cut harmonic distortion