Hello, I’m changing the board to an Ortur Master 2 S2 machine and I’m calibrating the drives and I have a question, could someone tell me the amperage that the motor has both x, y, if you could give me that information or the technical sheet or the manual I would really appreciate it.
The motors should have a serial number, search for that one. Most Nema motors have quite similar specs, so you can also use the most common setting of 1-2A. Just start with 1A and if the motor is too weak, increase the current.
The problem is that I am calibrating the voltage of the a4988 drivers that it delivers and I use the amperage of the motor if I calculate it at 1 amp it heats up and the voltage that I put in according to the calculation is 0.6v, but if I put the voltage at 0.3v it works well but when it draws a circle it does not close it I suppose that is why, in addition to the fact that I am working on the drivers in 1/16 steps, or if you could tell me how to solve the problem that it does not close the circle well when I order it to cut I think that steps are lost
What does heat up? The drivers or the motors? The motors run perfectly fine at 60-100°C, no need to care about that. Only if it exceeds 100°C, then reduce the current 
Ok, personally, I don’t run them above 80°C, but my 3D printer reaches 60°C easily for each motor and runs fine for many years now.
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