The Extensive adoption and popularity of VFD and Servo drives in multiple and diverse applications have contributed to strong growth and production efficiency in recent years. The Commitment of the manufacturer towards end-user reliability is to offer a good design that is inherently reliable and efficient, manufactured to the highest quality. As reliable as the electronic components are, they are susceptible to all sorts of problems – from incoming power disturbances to environmental hazards or wrong operation. End users’ expectations that manufacturers have a responsibility to support their variable frequency drives indefinitely are clearly not sustainable and are counter-productive in terms of maintaining high levels of reliability over the duration of their plant’s life.