Blew up my VFD; need advice

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28 Dec 2023 01:43 #289212 by kenthompson
A short occurred in my spindle wiring (my fault, bad solder joint) and my VFD produced a large 'snap' before dying (power light blinking on and off).  Looked inside the VFD and some physical interconnects blew out.

I am concerned that my spindle may be damaged and potentially introducing a short.  Ordered a new VFD, but I want to confirm my Spindle isn't going to damage the new one once hooked up.

How can I test the spindle to confirm?  I have a multi meter.. should I test for shorts across pins? Please help.

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28 Dec 2023 02:44 #289216 by PCW
Replied by PCW on topic Blew up my VFD; need advice
You could verify that the phase-phase resistance was the same for all
connections, and that the phase to Ground resistance was infinite.
The following user(s) said Thank You: kenthompson

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28 Dec 2023 03:10 #289223 by kenthompson
Resistance same across pairs, and infinite from phase to ground. Thank you!

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