Update: We fucked up. The threaded hole was without the bottom and was pointing directly to the coils... we over-tighten them and destoryed them. Nevermind xD
But still cant understand such a bad design. Who would do it like this??
Update: We fucked up. The threaded hole was without the bottom and was pointing directly to the coils... we over-tighten them and destoryed them. Nevermind xD
But still cant understand such a bad design. Who would do it like this??
Update: We fucked up. The threaded hole was without the bottom and was pointing directly to the coils... we over-tighten them and destoryed them. Nevermind xD
But still cant understand such a bad design. Who would do it like this??
@alankilian @o_lampe All right guys, we tore the stepper apart and found this surprise (pic below). Looks like someone (or something?) drilled a hole into the coil. Odd thing is that every one of them is like that. Must have been done by machine? The thing is that we shorten one shaft before we knew so Im not sure about a refund. What a great day :DD
Hello my friends,
Ive recieved new "bipolar" 4-wired stepper motors for my Z axis upgrade and it seems theyve got their inner coils all connected. My Duet 3 which im using cant drive them and prints out message "short-to-ground on drivers: xx".
Ive tried to connect only one coil (2 connected wires) and it did one step, but obviously cant continue without second stepper coil. So I looked up online and from what i found it seems the stepper might be unipolar cause of its all together connected coils. Circuit diagrams with bipolar steppers only appear to be connected between two wires = one coil. I dont have stepper grounded to main frame so im probably missing something. Or can it be that it really isnt bipolar as they have said me? I got 4 and they are all the same. Same resistance across any two wires.. around few to nothing ohms...
This is the motor:
https://www.omc-stepperonline.com/nema-24-stepper-motor/dual-shaft-nema-24-stepper-motor-42a-4nm-566-ozin-60x60x100mm-4-wires-24hs39-4204d.html