Variable frequency drives, or VFDs, have long offered the opportunity to boost the energy efficiency of rotating equipment such as pumps and fans. But when VFDs are fully integrated into a plant’s control system architecture, new levels of plantwide optimization are possible. Control’s Keith Larson caught up with Chad White, leader of the North America sales organization for Danfoss, and Raj Nara Yanan, product manager for Honeywell Process Solutions, at the recent Honeywell Users Group meeting in San Antonio to discuss how Honeywell’s partnership with Danfoss is unlocking new possibilities.