Recently we supplied two DP6970Ti-H POWERMaXX Fire engines with complete Variable Speed Control (VSD) combined with our industry leading FireGuard Control Panel. These engines are designed to maintain a system pressure by simply entered a duty pressure into the ComAp control module. High function, accurate function. Option available on all POWERMaXX engines
Where process conditions demand adjustment of flow from a pump or fan, varying the speed of the drive may save energy compared with other techniques for flow control.
Where speeds may be selected from several different pre-set ranges, usually the drive is said to be adjustable speed. If the output speed can be changed without steps over a range, the drive is usually referred to as variable speed (VSD)