Blew up my VFD; need advice
- kenthompson
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						28 Dec 2023 01:43				#289212
		by kenthompson
	
	
		
			
	
			
			 		
													
	
				Blew up my VFD; need advice was created 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.
					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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- PCW
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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.
					connections, and that the phase to Ground resistance was infinite.
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						28 Dec 2023 03:10				#289223
		by kenthompson
	
	
		
			
	
			
			 		
													
	
				Replied by kenthompson on topic Blew up my VFD; need advice			
			
				Resistance same across pairs, and infinite from phase to ground.  Thank you!			
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