Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: DEM engineering on February 26, 2017, 06:20:43 AM
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Hi all, great forum u guys have going
I have built a couple of small cnc tables before, now this one is bigger and running duel x axis motor and one single y axis
Anyway have couple of issues. When I turn on Mach 3 on computer and turn on power to the power supply for drivers, no green led is lit on drivers, which is normal, when I hit reset on Mach3 drivers power up and green leds on and motors lock but within 5 sec drivers switch off or loose power.
Then when I move any axis, drivers power up again for another short while
Only way round it is to keep moving axis for about a minute and then drivers will stay powered, it's not a big problem but am afraid of maybe doing long term damage
Regards
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Can you tell us the make / model of the breakout board and the motor drivers you are using ?
Tweakie.
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Hi, the drivers are mirco stepping CW 885
and the break out board is CPO -10V
both brought from www CNC4 you.
regards
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Could you carry out a measurement ?
Use a multimeter across your power supply to make sure the Voltage stays up when your drives go into low power (standby) mode.
Does setting SW4 to 0 on your drives remove the problem ?
Tweakie.
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Ok will do,
So I guess when leds goes out Does that mean they go into low power mode ?
Regards
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Yes.
The 'half current' mode is overridden by the switch SW4.
Tweakie.
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ok just heading to work now
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My luck,,
forgot to say this problem always happens nearly everytime I switch on in mornings, the very odd morning its ok, and this is one of them,
so checked power on supply end, power is staying the same 48.1 v,
but I suppose can not check for sure now when problem is not there today
but I would be happy if I have to leave switch 4 to off, for it to work ok,
when I walk away from machine I always hit reset button on mach 3 anyway.
would you be the man to ask this,
could I send a rough break down on what I have ,ie what rack/pinion, pinion size, tooth belt reduction size, what steps I have drivers set to, etc
just to make sure I am running the motors as smooth as I can,
regards.
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That's always the way - things never seem to misbehave on demand. :)
Try with SW4 to off for a while and see if that helps but check motors do not get too hot - they should be hot to the touch but not too hot that you cannot hold your hand on them for a while.
By all means post the details of your set-up, the hive mind will almost certainly spot anything that can be improved.
Also perhaps post your <profile>.xml file from your Mach3 folder then your Mach3 settings can be checked. Copy and rename this file to DEM.xml before posting (using the Reply tab and Additional Options...).
Tweakie.