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Author Topic: New to CNC cant get motors running  (Read 7226 times)

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Offline KTM

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Re: New to CNC cant get motors running
« Reply #20 on: December 15, 2007, 09:54:49 AM »
The 5V usually goes via the charge pump relay to the enable signal. This is to prevent the outputs from activating when Mach is not open.

KTM
Re: New to CNC cant get motors running
« Reply #21 on: December 15, 2007, 10:13:55 AM »
But I still cant get the motor to turn!

Offline KTM

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Re: New to CNC cant get motors running
« Reply #22 on: December 15, 2007, 11:19:43 AM »
Regarding the square waves - What is the amplitude and frequency - are they only active when you run the g-code.
you can also run the motors from the manual screen - press "tab" on your keyboard.
Try adjusting your feedrate - maybe it is far too slow(unlikely)

KTM
Re: New to CNC cant get motors running
« Reply #23 on: December 15, 2007, 12:33:42 PM »
Not having measured the amplitude and frequency I dont know, they are only there when I run G code and do start and stop. I did notice that it looked like 3 traces running in parallel, but I am not an accomplished oscilloscope driver.

I have gone back to basics, I have stripped a stepper driver out of the box, I have stripped the cable off of a motor, I have stripped the breakout board out of the box, completely rewired them and I will try it on a bench power supply tommorow.
Now I am going to have nice meal and a glass of wine.
Thanks very much for your help. I am sure we will turn over the correct stone in the morning.

My wife thinks I am a bit grumpy at the moment cant think why.

Clive