I'm having a little trouble understanding some things and how they should be configured.
I recently purchased a cheapo Chinese spindle to replace another spindle that failed (small HP high speed for wood carving). The old spindle was a 3hp 220v 8.5A 18000 RPM motor. The new one is 18000RPM 8.6A 220v but is rated for 3kw. When I try to run this new motor with the old VFD it takes significantly longer to spin up to speed than the old one. It also seems to bog down more on heavy carving, and if pushed too low may stall and takes a very long time to recover to full speed. The VFD involved is a Lenze AC Tech SCF230Y. By adjusting some of the drives parameters I was able to improve the startup time to almost as good as the old motors (increasing the Acceleration Boost made the most difference there). (This machine still has 3 of the old spindles for comparison.) But I'm still left with the bigger problem of the motor bogging down more and having a slower recovery than the older spindles. Anyone have any hints or suggestions for improving my situation? Is there any hope for this drive motor combination. Or is this Chinese piece of crap not up to what it's sticker says. (Considering it cost about 1/7th what the original spindle does it wouldn't be surprising.) -- ======================================== Todd Zuercher mailto:[email protected] ======================================== ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://makebettercode.com/inteldaal-eval _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
