Loosing steps on Y-axis
Hi! I just installed my new MG in my K40D 400x400 and all works well but it seems like the Y-axis motor has a too weak power. It is missing steps and if i move it fast by jogging it makes brrr noices. Same noice when i push the gantry by hand to test the holding power, x is pretty stiff but y is easy make it loos its grip. Do i need to adjust the power on the driver? As it is now i cant go faster than 50mm/sec without a big jump (10mm) when loosing steps.
Hi, it might be possible that the step stick driver is set to a low current value. We set these default to a low working value since the k40 power supply is not that powerful. You can tweak it a little bit to give it a bit more power. Don't open it full since that will too much for the power supply. Normally a quarter turn should be enough.
Thank you! I have three power supplies in mine, one for laser, one 24V for controll board and a small one 5V for the red laser pointer. I guess i just have to check so the driver doesnt over heat.
Hi Henric, you can actually measure the voltage on the miniature pot on the step stick with a multimeter. GND/Negative test lead on GND and the Positive test lead on the whisker of the miniature pot. See https://www.pololu.com/product/1182
You can derive from the voltage the actual current. The K40 motors run on max 350mA. The K40 power supply can max. deliver 1A . If you have an external power supply (one that does not combine the High Voltage for the laser tube and 24V/5v) then you have less an issue with giving the stepper motors more power. They just become very hot when driving them hard.