Top VFD brands

Such a programme ensures that any components likely to degrade by their very nature, such as the capacitors used within VFDs, are replaced at regular intervals. And here lies our first definition – replacement. It is widely accepted that component parts of an VFD (such as the capacitors) or a motor (such as the bearings) will need replacement during their lifetime and this is the role of an effective preventive maintenance programme.
However, a replacement programme can extend beyond the component level. At some stage, the cost of maintaining the old installation, such as hydraulic coupling or throttle control, is out-weighed by the potential energy savings offered by an VFD. In some cases it is more cost-effective to replace the old VFD with a new one that, not only is more efficient but uses, among other things, the very latest motor control method, communications and user interfaces. The warranty that comes with the new VFD will also play a part in this equation, as it ensures low service costs for the first years.