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Tune your acceleration wayyydown. Start with a velocity of 10 and acc. of like 2. From there you should be able to creep it on up and find top speed and then back off at least 20%.
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I have recently installed 3 keling 270 oz steppers (4 wires) using a Gecko 540 when I try to turn the motors they vibrate and sound like their turning but their not rotating. I was told that I need to tune the motors in Mach3. I have read the manual and I understand how you can tweak the motors to get more speed and such, but I think this is all based on the fact that the motors turn to begin with. Mine don't move at all. I have changed all the settings in motor tuning and nothing changes, still no turn at all. Could someone explain how to get the motors to turn so that I can eventually figure out how far they move the axis when I get that far. If I can't figure this out, I'll never be able to make chips.
Thanks
JOHN
Tune your acceleration wayyydown. Start with a velocity of 10 and acc. of like 2. From there you should be able to creep it on up and find top speed and then back off at least 20%.
Thanks for the reply, I tried setting as you suggested and still no go, although it did vibrate much slower. I must have something else wrong but I sure don't know what it could be, I am a complete beginner. I don't have any faults (red Light) showing on the Geck0 540. Motors are not yet hooked up to the mill yet as this is a new conversion of my HF Mini Mill. Any other suggestions of what to try?
Jack
You can try swapping the step or dir pins to active high or low depending on where they are now. Just try one pin at a time and start with one motor at a time and swap the direction setting. This is under motor pins in ports and pins.
Check your wiring. you'll need a+ and a- on step and b+and b- on dir. also check your resistor. it needs to be the same as the motor coil. if that does not work, in mach adjust the us from 0 to 1 to allow enough time for the signal to pass through the drive into the motor before trying to advance to the next step.
Unless you bought premade DB9 cables I'd take the covers off your plugs and check for shorts and bad soldered wires. There should almost be a note in the manual as I've red of a few with this problem including myself. Due to loose wire I had a Z axis that would sometimes buzz, sometimes go up, sometimes go down, and the same button was pressed every time. That problem caused me no end in grief until I found it. I also had a problem with a broken wire under heat shrink that touched intermittently on another axis. I doubt yur
Unless you bought premade DB9 cables I'd take the covers off your plugs and check for shorts and bad soldered wires. There should almost be a note in the manual as I've red of a few with this problem including myself. Due to loose wire I had a Z axis that would sometimes buzz, sometimes go up, sometimes go down, and the same button was pressed every time. That problem caused me no end in grief until I found it. I also had a problem with a broken wire under heat shrink that touched intermittently on another axis. I doubt your problem is acceleration, speed or tuning. You will still need to tune, but that isn't your buzzing problem. The good thing about a G540 is you can wire it bad and not kill it.
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