Originally Posted by
nateman_doo
OK, I am happy to report the machine is back up and running. I was cheap, and I bought a new G201X instead of the "indestructible" G203V. I also bought a new motor. I installed the 201X and ITS LIKE A NEW MACHINE. Well, that axis is. Its SO MUCH quieter then the X & Z axis. It makes me wonder.
Remember a while back I built those rattler's to attach to the motors because they resonated so bad?? I wonder if that is the first sign that the driver is going. They have been going almost 2 years. While I leave them on 24/7 they aren't running but a few hours a few days a week. I can probably take the rattler off the Y axis. Can someone explain why a direct replacement (touching no settings on either driver) makes a world of difference?? with the SAME OLD MOTOR?
Geckos are supposed to be GOOD at handling resonance. It sounds like that isn't your experience until now. I did some looking at the Gecko site and saw these two options for the G201X:
3.) NEMA-34 and NEMA-42 Motor
Use this option if the drive is to be used with NEMA-34 and NEMA-42 size motors. This option adjusts the midband compensation circuit for optimum performance when using a NEMA-34 and NEMA-42 motors. SW10 enables this function when “OFF” and disables this function when “ON”. SW10 should be “ON” when used with NEMA-17 and NEMA-23 motors.
LOW SPEED SMOOTHNESS ADJUST TRIMPOT
This trimpot adjusts the motor for the smoothest possible low-speed operation. Set the motor speed to about 1/2 revolution per second, and then turn the trimpot until a distinct null is noted in the motor’s vibration. This will result in the most even microstep placement for a given motor and power supply voltage
I see the the 203V also has the trimpot, but I can't find anything in the manual equivalent to dip switch 10.
I think SOMETHING on the 201X is adjusted better than the 203V for your motors. Have you tried the trimpot adjustment on the 203V's?
I have some experience with trying to cut down resonance on my brother's large 3D printer. We switched to KL-4042 drivers and ran the built-in tuning function. That helped quite a bit. They also had (VERY hard to find) software that would allow you to make tuning changes. I'm thinking that Gecko's equivalent is the trim pot and dip switch 10.
Regards
Steve