On Saturday 07 January 2017 20:07:12 Gene Heskett wrote: > Starting the spindle of course makes the noise worse. I setup the > halscope to read, pulseA, pulseB, velocity and index. > > Triggered on the index, I had to reduce the velocity gain to about > 10,000volts per vertical division to get the velocity peaks caused by > the noise on screen with the motor running at 15Hz! > > But I'm out of #10 crimp-on ring lugs and almost out of bolt. Tomorrow > starts with a trip to advance auto and TSC, which are right next door > in the same shopping center at the far end of town. > > I _will_ whip this SOB if its the last thing I do. > > Cheers, Gene Heskett
Progress. Everything with power on it is now working, which means the vfd and the encoder, the noise is gone from the encoders velocity trace on the halscope. I ran the motor from 16 Hz up to 140Hz, which is about 2600 at the spindle according to a halmeter X 60. One thing I am noticing is that with the VFD set to shut down the motor at 15Hz, just to keep it from overheating, is that the stop is a very brutal DC braking, so I'll have to reduce that braking current even more. Or lower the minimum speed it will run at. What sort of settings are those using a vfd using for minimum speed, and how much braking current? 1 horse motor, 1.5 horse vfd. I made some changes in the amanda configuration and am hoping I can get a backup of the /boot dir tonight. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
