On 03/13/2016 08:47 AM, Gene Heskett wrote: > On Sunday 13 March 2016 09:30:30 John Thornton wrote: > >> I just used the the one for by the drive. I "think" not all drives >> would use the same resistor. Just looking at the GS2 and there are 12 >> different braking resistors. >> > All of which are $435 a copy & still need some sort of an extra, external > controller. AD thinks we are growing our own money on a tree in the back > yard? > > MOST VFDs have the switch transistor built into the power block. (6 rectifiers and 7 IGBTs). So, those only need the resistor added. The purpose-built braking resistors usually have a thermal overload sensor so the drive shuts down if the resistor overheats.
Jon ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
