On Saturday 10 October 2009, Jon Elson wrote: >Hubert Bahr wrote: >> I am talking about a spindle on the X3 Seig Mill. I am planning to >> convert the current gear drive to a two range belt drive, and since the >> current controller appears to use a pot to adjust the speed and a switch >> to change direction I believe I could use some type of control voltage >> and a relay to replace the pot and switch. > >Warning! The spindle speed controller on these machines is NOT isolated >from the >line. So, you need to provide some sort of isolation for and speed >controller interface >to the computer. PWM and optocouplers sounds like a good idea. > >Jon > The PMDX-106 takes care of that Jon, isolating all the VSD controller stuff.
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