WEST FARGO, N.D. – Midland Door Solutions, a full-service door manufacturer for agricultural, aviation and commercial buildings, introduces a variable speed drive operating system for its bi-fold doors. The system contains a variable frequency drive and programmable logic control, which provide smooth, quiet operation throughout the door’s cycle.
With a variable speed drive system the cycle time decreases as much as 33 percent, depending on the door’s size, which helps owners reduce heat loss when opening and closing the door. In addition, the variable frequency drive converts single-phase power into three-phase power, leading to cost savings as three-phase power components are less expensive.