Kmansker
Member
- Location
- kansas city, missouri
hello everybody,
so to start this off i will explain my understanding of why someone would use a vfd vs. a motor starter. and i could be wrong but i think the whole thing boils down to efficiency. lower the cost of running a motor while improving control. I have had some technical schooling and was under the impression that before the VFD became marketable (size and cost effective) that the way you controlled the the output of a motor was with the use of a variable drive gearbox. the reason i'm giving my theories are because i thought the VFD was the replacement for the motor starter, and i'm finding out that not everyone thinks the same....... the place where i work uses the VFD in series with a motor starter??? Either up stream or down stream, which doesn't make any sense to me. does anyone out there have any input on this or a similar experience??
thank you, keith
so to start this off i will explain my understanding of why someone would use a vfd vs. a motor starter. and i could be wrong but i think the whole thing boils down to efficiency. lower the cost of running a motor while improving control. I have had some technical schooling and was under the impression that before the VFD became marketable (size and cost effective) that the way you controlled the the output of a motor was with the use of a variable drive gearbox. the reason i'm giving my theories are because i thought the VFD was the replacement for the motor starter, and i'm finding out that not everyone thinks the same....... the place where i work uses the VFD in series with a motor starter??? Either up stream or down stream, which doesn't make any sense to me. does anyone out there have any input on this or a similar experience??
thank you, keith