CAD CAM EDM DRO - Yahoo Group Archive

RE: [CAD_CAM_EDM_DRO] close loop and stalling

Posted by Tim Goldstein
on 2003-05-23 17:12:08 UTC
EMC will add additional pulses to the motor that is lagging. My thinking
is this will only make your stalling stepper stall even more and EMC
will "correct" by trying to step the stalled motor faster. Once you get
enough steps off from commanded you get a fault.

Tim
[Denver, CO]
Sherline products at Deep Discount
Mach1 & DeskCNC with credit card ordering
www.KTMarketing.com/Sherline


> -----Original Message-----
>
>
> I have a question regarding "close loop" systems using stepper motors
> with encoders. The software is EMC. What happens when the motors
> accelerate to fast and stalls using the above setup? Does it stop
> all the motors when it stalls? Or, does it try to correct the motors
> until it arrives at the determined position? I read somewhere that
> with a close loop system you can run the motors as fast as you can
> and let the encoders compensate for slow motors and it will do the
> routing correctly. Can someone explain some of these things?
>
> Thanks,
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html

Discussion Thread

george_barr 2003-05-23 16:28:46 UTC close loop and stalling Tim Goldstein 2003-05-23 17:12:08 UTC RE: [CAD_CAM_EDM_DRO] close loop and stalling William Scalione 2003-05-23 19:20:11 UTC Re: [CAD_CAM_EDM_DRO] close loop and stalling Jon Elson 2003-05-23 20:45:31 UTC Re: [CAD_CAM_EDM_DRO] close loop and stalling Dan Mauch 2003-05-24 06:25:21 UTC RE: [CAD_CAM_EDM_DRO] close loop and stalling kdoney_63021 2003-05-24 08:41:57 UTC Re: close loop and stalling