ToolCat
Aluminum
- Joined
- Dec 20, 2005
- Location
- Kearney, NE
Spindle intermittent - Fanuc 11T with FUJI drive
Sometimes the spindle starts and sometimes not. No alarms. For testing I mdi s400 m3 and then switch to rapid mode so I can use the spindle on/off buttons. Sometimes it will start but most of the time it won't. Sometimes starts and then stops in a few seconds. In fact a few times if it doesn't start and you just let sit that way for a few minutes it might start on its own. Watching relays the only one that changes when this happens is one called SUP. While in M3 and the spindle is not spinning if the SUP relay is off, and it will be on if the spindle is turning.
I was hoping it would be a bad contact and spent much time removing 70 some relays, cleaning contacts, and ohm checking before reinstalling. Unfortunately that was not it because the machine behaves just the same. Looking through the electrical drawings in the manual to see what turns on the SUP relay. See attachment. Wire 500 and wire 421 I can see on the machine do attach to the coil of the SUP relay. Now trying to follow that wire back. Line 421 connects to the spindle drive through connector CN1(19) I have found that connector on the drive but I do not see 14C 14X or 14A. I wonder if 14X is an IC?
Any ideas? Does this problem even sound like a spindle drive problem? The spindle is fine when it is working.
Sometimes the spindle starts and sometimes not. No alarms. For testing I mdi s400 m3 and then switch to rapid mode so I can use the spindle on/off buttons. Sometimes it will start but most of the time it won't. Sometimes starts and then stops in a few seconds. In fact a few times if it doesn't start and you just let sit that way for a few minutes it might start on its own. Watching relays the only one that changes when this happens is one called SUP. While in M3 and the spindle is not spinning if the SUP relay is off, and it will be on if the spindle is turning.
I was hoping it would be a bad contact and spent much time removing 70 some relays, cleaning contacts, and ohm checking before reinstalling. Unfortunately that was not it because the machine behaves just the same. Looking through the electrical drawings in the manual to see what turns on the SUP relay. See attachment. Wire 500 and wire 421 I can see on the machine do attach to the coil of the SUP relay. Now trying to follow that wire back. Line 421 connects to the spindle drive through connector CN1(19) I have found that connector on the drive but I do not see 14C 14X or 14A. I wonder if 14X is an IC?
Any ideas? Does this problem even sound like a spindle drive problem? The spindle is fine when it is working.
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