countryguy
Hot Rolled
- Joined
- Jul 29, 2014
- Location
- Mich, USA
Had our first little fire-drill event! As a thriller novel - The son came crashing into the room. "Something's burning" he shouted! Instantly he retreated back out the door he flew in from. Just as I clear the threshold into the Shop with my nose in the air, the the VF console pushes it's 'Regen overheat' and Alarm. Bang- Eyes to the top rear... It's like in slow motion for me even after 2 days. Sort of even funny now. I looked up to see the Regen resistors cage glowing that aggressive apocalyptic red glow of the toaster-oven on broil. You just don't forget that cage and that much red light! Now we know what's up. The Haas is suffering from regen-itis! Smoke is also pouring out the top with some pretty good flame. bang-zoom, I'm up the rear ladder already while the kid was grabbing the extinguisher. He has the hose in his hand about to yank the pin. I will also never forget the wildest look in his eyes which told me instantly he was milli-seconds from yelling "Duck" while blowing that Sh%t all over my restored VF. OMG moment... flashback for many here possibly; I recall the time we teenagers discovered how much sheer excitement and overwhelming mess you can make with a dry chemical FE in a room. right? you know you did it too.
OK Drama done. There is a serious part to this. What he did not know or realize yet is that I keep the big bag of Baking Soda on the bench for more than just my battery clean ups and mild cleaning grit... A small handful of the soda put out the on-fire thermal sensor instantly. Cutting the electric instantly stopped the current flowing to the regen pack. Now he knows. Whew!
I still cannot locate the correct thermal sensor equivalent. They are made by PEPI, were labeled 19+100F The Co is still around but has not returned my calls or emails yet. Something from this page I suspect Products - Portage Electric Products, Inc. If anyone knows a source for an direct replacement... all ears!
The IGBT's are IXGN 60N60 obsolete but thousands out there from sources. ebay and UT I just bought 4. $13 per.
60N60 IGBT Datasheet pdf - IGBT. Equivalent, Catalog
And the root cause, another lesson learned for me- Recommended replacement vs direct equivalent, When I asked a component supplier to 'spec' a substitute Vector drive regen IGBT for the obsolete one a few years back the OEM 'suggestion' for new designs was a 60amp unit. This is a 100amp device. Putting in replacement electronic parts should be carefully selected. I trusted someone else and but never verified it as a direct equivalent. The IGBT failed when under high-rpm braking. shorted to ground, which sends the current to the regen pack. Ta-da- fire.
Never a dull moment in the shop.
Just something on a catch-up eve.
OK Drama done. There is a serious part to this. What he did not know or realize yet is that I keep the big bag of Baking Soda on the bench for more than just my battery clean ups and mild cleaning grit... A small handful of the soda put out the on-fire thermal sensor instantly. Cutting the electric instantly stopped the current flowing to the regen pack. Now he knows. Whew!
I still cannot locate the correct thermal sensor equivalent. They are made by PEPI, were labeled 19+100F The Co is still around but has not returned my calls or emails yet. Something from this page I suspect Products - Portage Electric Products, Inc. If anyone knows a source for an direct replacement... all ears!
The IGBT's are IXGN 60N60 obsolete but thousands out there from sources. ebay and UT I just bought 4. $13 per.
60N60 IGBT Datasheet pdf - IGBT. Equivalent, Catalog
And the root cause, another lesson learned for me- Recommended replacement vs direct equivalent, When I asked a component supplier to 'spec' a substitute Vector drive regen IGBT for the obsolete one a few years back the OEM 'suggestion' for new designs was a 60amp unit. This is a 100amp device. Putting in replacement electronic parts should be carefully selected. I trusted someone else and but never verified it as a direct equivalent. The IGBT failed when under high-rpm braking. shorted to ground, which sends the current to the regen pack. Ta-da- fire.
Never a dull moment in the shop.
Just something on a catch-up eve.