From: Steve B. <st...@pi...> - 2009-10-12 00:38:52
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On Sun, 11 Oct 2009 10:16:46 -0400, you wrote: >So in short, it should be called a VSD, not a VFD. A >VFD would need a 3 phase motor, and made to run synchronous if it is to have >usable torque at low speeds. Minor nit picking to be sure but there is a >world of difference in the actual hardware. As I said, there are several different boards, the latest designs use 3 phase motors, with an encoder on the motor shaft, giving feedback to a VFD. Steve Blackmore -- |