Motor issue….but why?
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This is a link to a video I recorded rather than attempt to explain.
https://drive.google.com/file/d/0B4OT2OphLgFva3lCWHVyWFdNd2c/view?usp=drivesdk
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Sounds/looks like a motor not connected right, maybe a plug only connecting 3 pins of a 4 pin connector?
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yep agree
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Hmm that's interesting. I'll check the wiring.
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How to you check which wires are which coil? Continuity?? Resistence? What should I check on a multimeter?
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Each pair should have a low resistance, there should be.no connection between the coils
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Each motor appears to be wired the same as the others, black green blue red…black being the side with the power mosfets. Each coil is 1.9 ohms, with the exception of just one coil that was 2.9 ohms.
I disconnected the cables and the previous motors ran perfectly, swapping the motors out would be extremely inconvenient, is there anything I can change to make the motors not vibrate when they move?
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And which colour wires do you get continuity between?
The 2.9 ohms reading is not right if the other coil on the same motor reads 1.9 ohms.
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If the motor is a "20160631169" then I have no idea, could not find that on the internet. If its a "SL42STH40-1684A" that is a fairly standard stepper motor with 4 wires, so there should be only two coils, both of which should read the same resistance in the region of 1.65R your meter will also have the lead resistance so 1.9R would be in the right region).
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I swapped out the motor with the bad coil, calibrated and printing. Note to self: check motors before installing!
Thank you very much!
