An issue is back with Y axis motor outputs. I had grinding issues in the past and it was cable related and may have been the issue I have now all along. These are the Nema 23 motors. At mid to low feed rate speeds I am getting some “audible jitter” in motor movement. It is not affecting carves whatsoever, but its irritating and feels wrong for lack of a better word. This is my second controller and complete 2nd cable set. I have replaced cables with no change. What I have found is that if I swap the Y and Y slave motor cables at the controller itself, the problem follows the controller output (m2), not the cable. Mechanically both rails are smooth as silk, just never at the same time; only when cabled to m1. I really don’t want to buy another controller and am looking for any suggestions, even if component level or a good price on a used controller. My intent is to elite upgrade at some point, but not in an effort to fix this issue and pass the problem on to someone else. Any help appreciated.
I can do that. Taking a quick look, is the expected voltage in each coil 3.2V with a max current of 2.8 A? I see that as maximum ratings so I’ll check it unloaded and under load if i can get the leads on it.
Not knowing that the BB was not a collaboration I posted this issue on the BB forum as well. One member suggested the following and I’m not sure that’s possible with the Z20 motor on the Z being different and the M2 port being slave?
<< First let me confirm that you actually do have a Buildbotics Controller. We do not supply controllers to OneFinity and never have. Please let me know whether you got your controller from OneFinity or directly from Buildbotics.
With that out of the way, it sounds like there is something wrong with the motor port. Here a few suggestions:
inspect the pins on the motor port to verify that they look good and are able to make good connections with the motor cable
Try reconfiguring your machine by swapping suspected bad port with the port serving your Z axis. Make sure to write down the configuration for the Z axis port first. Then, assign the z motor port to the motor that was serving the suspected bad port and move the Y motor cable to that port.