SHAPOKO 4XL
This morning I fired up the CNC and after a few minutes the spindle start up on its own at about 12k. M05 did not stop it.
I’ve cycled the power on both the CNC and the VFD and the problem. Usually turns on about 6o seconds after powering up the VFD. persists.
I’m not sure what to try next. Any suggestions would be appreciated.
Don’t change bits until the problem is resolved! That sounds very dangerous.
Do you have a ground wire between the VFD and CM board to put them on the same electrical ground level?
You might try disconnecting the signal cable that connects the Shapeoko PCB to the VFD at the VFD. If the spindle still starts on its own it’s likely a problem in the VFD. Either way you should contact support@carbide3d
Whatever you do, don’t work on the signal cable without powering down both the VFD and the controller.
I fried my controller just connecting the signal cable.
Not sure how to accurately answer that. The VFD is grounded through a standard 3-prong plug.
Likewise the controller is grounded via it’s 3 prong plug. I tested for continuity between the outside frame of the VFD in the ground wire on the controller and I find no signal. I don’t know if that means that they’re they aren’t grounded together or not. If that’s not the case, I’m not sure how to go about solving it. I can easily run a wire from the ground to the outside frame of the VFD, but I can’t get inside the VFD (carbide 3D supporty)
Short answer: I don’t know, and I’m not sure how to find out for sure. Because I’m not sure if the metal on the outside of the VFD should be grouded
Not sure how to accurately answer that. The VFD is grounded through a standard 3-prong plug.
Likewise the controller is grounded via it’s 3 prong plug. I tested for continuity between the outside frame of the VFD in the ground wire on the controller and I find no signal. I don’t know if that means that they’re they aren’t grounded together or not. If that’s not the case, I’m not sure how to go about solving it. I can easily run a wire from the ground to the outside frame of the VFD, but I can’t get inside the VFD (carbide 3D supporty)
Short answer: I don’t know, and I’m not sure how to find out for sure. Because I’m not sure if the metal on the outside of the VFD should be grouded
I also check for continuity between the ground plugs of the two units and there was none. Of course any diode on either one of those power lines could prevent me from seeing connectivity through the ground plug so this is probably just a net illustration of how little I know.
I tried unplugging The six-pin plug on the side of the VFD. When I do that the round button goes off and appears that there’s no connection between the controller and the VFD, and The light on the round button on the VFD goes out. At that point the spindle does not start but that doesn’t really tell me much, because I don’t know if that breaks the circuit between the two which would make sense if it did.
This is way above my head.
I also noticed that the TX light on the USB on the controlled is on solid red whenever they the CNC is powered on. It stays on even when the USB cable is unplugged. I don’t remember seeing that before.
I would expect the red round button light to go off when separating the Shapeoko from the VFD. The fact that the VFD did not start by itself after disconnecting the 6 pin is definitely a clue to the problem. The VFD guys at support will be the ones to contact for further troubleshooting.
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