Thread: Warco Major CNC build log
Good idea, but then I'd have had to clean off the RTD and I was rather enjoying putting it together :naughty:
If I take it off I promise to Loctite it
Kip, I don't know how it compares to driving the handwheel because I've never tried that. If I had to guess I'd probably plump somewhere between amazing and freakin' miraculous
I wound up the feed rate on that hybrid stepper and it would do 18mm/s but clacked out at 20 mm/s
I disconnected the Y axis to get some spare Amps then switched the hybrid peak current from 1.9A to 4.2A peak.
Wouldn't do 18 mm/s anymore :nope:
The cable on the Z is altogether too long and it's having problems controlling the current.
The stepper driver can't actually cope when you increase the current.
I imagined it :heehee:
So, any ideas what driver/PSU combination I need to shop for?
However, 18mm/s is a lot better than I had before so I made new plates to fit them on the X and Y. Stuck a fanciful strain relief bracket on the X so I can bolt the flexy trunking to it.
Speed is a factor of voltage, not amperage, try it at 440 volts and see how fast it goes.John S -
The cable goes from the front of the cabinet, out the back, up by the column and then forward again.
I'm using the MSD542 driver at 40 Volts.
18mm/s is top whack, would never dare run it at top whack, 10-12mm/s is probably credible for the G00 though.
It's a bit cluttered at the top, but I could probably mount a driver and PSU within 6-10" of the motor if I had to :naughty:
Cable length is going to make little difference unless its so thin as to be dropping considerable volts.
What size/spec of motor are you running?
Did you saturate the motor?
06-07-2009 #59Visit Us: www.zappautomation.com
06-07-2009 #60If I knew what "hybrid" meant it could explain it...
If you are connecting it is parallel and only giving it 4.2A, you are under powering it.
I wonder if it's a resonance (force/mass) issue - extra current = extra force. Might be worth trying a mass damper on the motor (i.e. I would stick a large/heavy washer to the motor pulley with a bit of double sided tape and re-test)
 ISTR you have a spare pulley, try sticking that on top of the existing one (use DS tape or blu-tack something with a bit of 'give')
Last edited by BillTodd; 06-07-2009 at 01:26 PM.
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