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Post by Hommer Woods on Nov 14, 2018 15:32:06 GMT
Seem to have problems with the stepper motors on the Y Axis. They have always made more noise that the others but now seem to be affecting cuts. I have noticed lately that when I do round profiles they are not always round after the cut. The videos below show some of what I am seeing. In the motor videos I had loosened the motors from the drive screws so the machine is not involved. The right one makes more noise but the left one seems to also not run smoothly all the time and makes a tapping sound too. I also noticed that I can turn the left motor by hand even when it is under power. Right Motor VideoLeft Motor VideoMachine VideoLooking for advice on anything I need to do or if I need to replace the motors. |
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Post by joebob296 on Nov 14, 2018 18:07:16 GMT
Could it possibly be a bad driver? What happens if you swap Y with X? Do you still get the same issue?
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Post by Hommer Woods on Nov 14, 2018 18:11:16 GMT
Could it possibly be a bad driver? What happens if you swap Y with X? Do you still get the same issue? Tried swapping the cables and nothing changed. |
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Post by joebob296 on Nov 14, 2018 18:46:56 GMT
Can you still turn the left motor by hand when the cables are swapped? Do the drivers still have the correct voltage on them? Voltage on the output of the power supply?
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Post by Hommer Woods on Nov 14, 2018 18:57:57 GMT
Can you still turn the left motor by hand when the cables are swapped? Do the drivers still have the correct voltage on them? Voltage on the output of the power supply? Drivers and power supply voltages check out. Can still turn the left motor by hand under power after cable swap. |
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Post by joebob296 on Nov 14, 2018 19:30:35 GMT
Is the Z driver and motor the same type? Have you tried them on the Z driver?(If its the same)
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Post by Hommer Woods on Nov 14, 2018 20:06:16 GMT
Is the Z driver and motor the same type? Have you tried them on the Z driver?(If its the same) Doesn't seem to change no matter what driver they are plugged into. |
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Post by Hommer Woods on Nov 14, 2018 20:18:13 GMT
I also notice when I have the couplers loose on both Y motors and no power the right one feels smooth when turned but the left one feels a bit rough like a worn bearing or something. Seems that may be where the problem is.
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Post by joebob296 on Nov 14, 2018 21:48:24 GMT
When I turned my motors by hand with the coupling loose, it had an indent feeling. As in it would rotate a small amount, then "indent" or "click" into place. Even with the indent the turning of the shaft was smooth. If its rough, I'd say there is the problem. If its turns smooth maybe there is a short in the coils somewhere, could you possibly ohm them out?
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Post by Hommer Woods on Nov 14, 2018 21:57:47 GMT
When I turned my motors by hand with the coupling loose, it had an indent feeling. As in it would rotate a small amount, then "indent" or "click" into place. Even with the indent the turning of the shaft was smooth. If its rough, I'd say there is the problem. If its turns smooth maybe there is a short in the coils somewhere, could you possibly ohm them out? I notice a small indent kind of feel in all the motors but the one is more severe. I also notice that side of the gantry seems to jerk a bit when moving under power. Afraid your last question is getting outside my understanding of electronics, my thing is working with wood.  |
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Post by joebob296 on Nov 14, 2018 22:24:11 GMT
If the gantry appears to jerk, I would assume that the two motors are not working together. As in one is moving faster or the other is moving slower, or some combination thereof. If the driver and power supply check out, I would replace the motors.
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Post by Hommer Woods on Nov 14, 2018 22:37:29 GMT
If the gantry appears to jerk, I would assume that the two motors are not working together. As in one is moving faster or the other is moving slower, or some combination thereof. If the driver and power supply check out, I would replace the motors. Since everything works smoothly when the motors are uncouple I keep coming back to the motor on the left side acting up a bit so I am where you are. Thanks for the input. |
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Post by joebob296 on Nov 14, 2018 22:41:35 GMT
What if you were to swap the left and right motors? Does the gantry jerk in the opposite direction?
EDIT: Not necessarily in the opposite direction, but what side, for lack of better terms, gets left behind if you swap motors.
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Post by Derek the Admin on Nov 14, 2018 23:30:44 GMT
Hat tip to joebob for helping another member. I appreciate it.
It's very rare that a motor conks out. Count on one hand kind of rare. Despite the rarity, I think we are seeing that here.
I'll get one sent to you Stephen.
Regards
Derek
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Post by Hommer Woods on Nov 14, 2018 23:36:25 GMT
Thanks Derek. You may recall the electronics we're damaged in shipping. I am thinking since it has always been noisy and occasionally moved erratically this motor might have been damaged too.
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