I never do a repair of a Fanuc AC spindle without rebuilding the board, if you dont the IGTB will blow again - maybe not right away but soon. My megger outputs DC voltage - actually 1000vDC.
Thread: Fanuc spindle drive
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08-01-2006, 03:10 AM #21
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08-01-2006, 03:35 AM #22
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Yes its has the leads coming off it to the IGBT's.
Originally Posted by mrwhittle
Al.CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
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08-08-2006, 01:01 AM #23
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The field tech from the company that worked on the drive came over Friday (four hundred mile round trip) and checked the motor and spent a couple hours or so checking the drive. He said he had never seen one blow all three of the 100A fuses, but couldn't find any thing else wrong. When the fuses came in (UPS) he put them in and the machine booted up and ran fine.
Any thoughts why it blew three fuses and the panel breakers when I released the E-stop?
Martin
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08-08-2006, 01:27 AM #24
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Put it down to Murphy :violin: Originally Posted by mrwhittle
Al.CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
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08-08-2006, 02:04 AM #25
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Perverse nature of inanimate objects.
Besides, you can't see electrons therefore you can NOT trust them.
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03-29-2007, 11:28 PM #26
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That Megger from Grainger would do just fine to check for ground. However, it won't tell you if there is a coil to coil short, need a Millio-ohmeter for that. Best thing, have a local motor shop come over and test it for you.
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