D RIVE MAINTENANCE: BETTER TO PRESERVE THAN REPLACE

摘要

Even with the rigorous demands placed on most industrial ac, dc and servo drives, you can expect them to survive for 40,000 hours, or five years of continuous operation. However, environmental factors such as poor heat dissipation can significantly reduce the operational life of these devices - and by as much as 50% in some cases. Conventional wisdom is simply to replace a drive unit when it starts to go wrong, but there is an alternative, more economical approach. We tend to think of drives as commodities these days, but in reality they remain relatively high cost pieces of equipment. Moreover, when taking the replacement route, there are potential issues concerning the interfacing of new technology into an older control system. It really does makes sense to consider repair rather than replacement.