Starting from scratch (again) - need help (apparently a lot)

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6 years 10 months ago #152083 by PCW
By far the most common reason I see for no response to step signals is that the
steptime is set too short ( 5000 ns is a good starting point)

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6 years 10 months ago #152125 by mooser
Played around more tonight, still can't get any motion from the steppers
Tried setting the steptime to 5000, nothing
Tried using the built in Gecko 201 settings (apparently that's what these drives were copied off of) which uses a step time of 500, nothing.

I set one of the pins on the 7i76 as a limit and another as the e-stop, both of those seem to work properly so it's definitely talking to the card.

I need to find another way of testing the drives and the steppers to make sure they do work (worked when put away....)
Thanks again for the help

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6 years 10 months ago #152126 by Leon82
Do those drives have the current resistor or the dip switches?

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6 years 10 months ago #152127 by mooser
Resistor, both motors are rated at around 6 and i've set the resistance for close to that but under.
I do hear one "twitch" when power is turned on.
I've got an old 3 axis xlotex driver board here and matching steppers from a desktop engraving mill, maybe i'll have to dig up those
~
M

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6 years 10 months ago #152128 by Leon82
My 201x I get a clunk when I turn them on also.

When I had mine on a parallel port I had to invert the step pin to get more than gurgling sounds.

So on my 7i96 I hooked them up to the step and dir minus pins.

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6 years 10 months ago #152146 by mooser
Thanks for the suggestion, tried reversing one of them with no change. I'm going to swap over to the other drive / motors and try again, maybe this power supply / drive / motor combo just isn't good (but it seems to me this was the same issue I was having back before adding the 7i76 and was using the "real" PS and motors on the lathe
M

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