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Author Topic: motor tuning - pulse setting relation to kernel speed  (Read 6098 times)

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Re: motor tuning - pulse setting relation to kernel speed
« Reply #10 on: June 26, 2013, 01:45:22 PM »
Sorry for the delay, I had some issues getting back on the forum.

My router has been running just perfectly for such a long time with the current settings I thought that even though everything moved freely, it wouldn't hurt to take it all apart and clean it.   Well, along the way I discovered that one of  the set screws that locks my X axis to the shaft was loose.    It was the one that tightens against the flats.   So, under load the pulley would slip, but under normal operation the other set screw held it tight enough that there was no slack.

Still it wouldn't hurt to have you look over my config and see if there is anything you see out of wack.

Mach 3.043.063
XBox Plugin
MSM Professional 2.0

Dell Optiplex 755 (Two Cores, 2Gb ram)
     Onboard video
     Onboard Parallel Port
     
PMDX-126 MultiMode Breakout Board

PMDX-133 Gecko Motherboard

Gecko 203V Drivers (current limited to 5amps, 117.5K resistor)

Kepco 350W power supply (48V, 7.5Amps)

Z-Axis 20000 steps per inch, 160 Velocity, 30 Acceleration
       Standard .1 pitch lead screw, direct drive
       Xylotec 2.8A, 269oz 
X-Axis 15875 steps per inch, 120 Velocity, 40 Acceleration
       Metric 10 Pitch, 2/3 belt drive,
       Xylotec 2.8A, 269oz   
Y-Axis 7620 steps per inch, 180 Velocity, 40 Acceleration
       Metric 20 Pitch, 2/3 belt drive
       425az, 4.2v, 3A Stepper from HobbyCNC

Re: motor tuning - pulse setting relation to kernel speed
« Reply #11 on: December 27, 2013, 09:03:49 PM »
@SkyMoCo...
Curious what ever happened? you never posted what your solution was.
I am having similar issues and am hoping perhaps your solution could be mine too.
TIA.
Sam
Re: motor tuning - pulse setting relation to kernel speed
« Reply #12 on: December 28, 2013, 10:15:20 AM »
Gecko 540 and 210's should be set to active high and 3us or 4 us pulse width. So in Mach do not check the "active low" boxes for motor setup. I was running mine at 2us (Gecko recommended setting) and intermittently had missing step problems. It cleared up at 3us...  :)
Re: motor tuning - pulse setting relation to kernel speed
« Reply #13 on: December 28, 2013, 12:03:38 PM »
Hmm funny thing SkyMo claimed to have Gecko 203V's...
they require Active High and 2us. So are you saying your response was the solution?