Hi:
. With the fault wires
changed to the breakout board when the buffer reaches 100% I see
all Axis stop, till the buffer goes down. My Question is, The buffer causing
the lost steps and if so How can I increase it capacity?
Im not sure I get this one. What did you feed trhe fault back to? No matter what you hook a gecko fault line to I cant see any effect on the buffer. The buffer shoudl not hit 100% excepot at the beginning or end of a particular movement. If it does, then its a sign the computer is too slow, but thats pretty rare.
The Ball screws have no bind when turn by hand so I don't think there a bind
I was just cutting air. I can try to stop the head from moving it over power
me so it seems they have good power
That sounds normal..
Also X axis seem to dither when stopped not all the time I tried adjusting
it clears up and comes back the Y axis sings a little not bad like a pig
Singing is quite normal, dithering visable is not. Its a sign the gain or damping is misadjusted.
squeal turning down counter clockwise the limit on the current stops this.
Thats turning off you power or torque. You shoudlnt do that. As I understand it , after settign the gain and damping, the last step is turnign thatone pretty mcuh CW, and it shoudlnt dither at that point. That pot is the max current, and it shoudl be good almost anywhere. Id see abotu adjusting the gain and damping as per Mariss's specifications to stop the dithering, and I woudlnt worry about singing. My servos sing a bit, but cut great.
I'm using Gecko 320. Are the trim adjustment clockwise for the limit or
counter clockwise?
CCW is off, or lowest setting. CW is highest. I start max CCW myself and turn CW , but again, best to read Mariss's white papers on that, Id hate to pass you my bad habits..
I turned the limit adjustment clockwise to max and still
loosing steps I believe it has to be in the adjustment of the motor causing
some of the problem. it still machinea a good period before it acts up .I
think the buffer has to do with this and the tuning.
Thanks Randy
Losing steps on a servo usually means noise on encoder lines, or on the step lines, not much else can cause lost steps on a servo. They correct quite well under almost all circumstances. But if the gain is off, they can look like they lost tspes, then pick the back up on next move. Sounds lieka proper adjustment is required..
Art
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