Control technology has revolutionized crane performance

While technological advancements have significantly improved the structural and mechanical portions of an overhead crane, the process has been more evolutionary than revolutionary. What has changed dramatically, however, is how overhead cranes and hoists are controlled

Control systems are the most important aspect of an overhead crane or hoist and without them, the machine would not function nor perform in a safe, reliable, efficient manner.

Many older cranes rely on contactors to switch regenerative load currents to resistor banks to dissipate energy. Depending upon the duty, costly contactor tips must be replaced frequently, increasing labor expense. Switching is best done with state-of-the-art AC or DC electronic controls, designed to meet current operational needs. Even owners of cranes with early versions of electronic control may have difficulty obtaining parts such as original printed circuit boards, or the manufacturer may no longer support their particular product.

The present trend toward precision handling of materials has created a demand for simple, dependable, high-performance controls capable of communicating with computers and various other operator interfaces. Demand is also increasing for crane diagnostic capabilities, which provide remote monitoring of drive performance

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