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Kontronik Drives Jazz and Jive ESC's and other Kontronik equipment support |
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02-10-2013, 12:55 PM | #1 (permalink) |
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Join Date: Oct 2010
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Kosmik always need fully charged packs?
Ok so I finished my build last night and i setup my kosmik on a fully charged 12s setup. I went out and flew and the governor and BEC worked great. Granted I only flew for about 1.5 minutes so there is plenty of juice left in the packs. I went out again this morning to try to finish the packs and the esc would not initialize. So i went it to charge up again and then it initialized. Is this how it works?
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After every crash just remember .. “We can rebuild him. We have the technology. We can make him better than he was. Better..stronger..faster.” Intro from Six Million Dollar man RIP Roman Pirozek Jr. 1/11/94 - 9/5/2013 |
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02-10-2013, 02:15 PM | #2 (permalink) |
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Join Date: May 2011
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yes you cannot hook up partially discharged packs to it it needs to see the initial voltage of fully charged packs to correctly set its governing rpm.
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Richard Zappe Team Kontronik USA PeakAircraft |
02-10-2013, 04:32 PM | #3 (permalink) |
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Join Date: Mar 2012
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I also noticed somehting like this when doing some test flights over the weekend.
I did 2mins, landed, powered off, checked everything over. Packs were at 82%, so I connected them back up to do another few mins, the startup beeps were not the the 3 long tones for 12S, but 2 longs and 3 shorts, 11S. I still flew and it worked well.
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[B]TT E820 - Kosmik 200, Scorp 5035 TT G4.1(x2) - OS 91 3D Speed, Hatori MSH Brains + JETI DS-16 |
02-10-2013, 04:33 PM | #4 (permalink) |
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Join Date: May 2012
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I killed a set of packs, they were storage charge (3.83v) per cell when my flight started... sooo apparantly I can fly with low voltage at start of flight
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honey bee king II |
02-10-2013, 05:43 PM | #5 (permalink) |
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Join Date: Oct 2010
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is there a way to turn off this feature?
__________________
After every crash just remember .. “We can rebuild him. We have the technology. We can make him better than he was. Better..stronger..faster.” Intro from Six Million Dollar man RIP Roman Pirozek Jr. 1/11/94 - 9/5/2013 |
02-10-2013, 05:59 PM | #6 (permalink) |
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Join Date: Mar 2012
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Is setting gov store a way to get around it?
I was still able to fly, even tho it picked up 11S.
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[B]TT E820 - Kosmik 200, Scorp 5035 TT G4.1(x2) - OS 91 3D Speed, Hatori MSH Brains + JETI DS-16 |
02-11-2013, 01:20 AM | #7 (permalink) |
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I can't remember having a problem with the ESC initializing when I was setting it up on the bench.
The packs were connected and disconnected over a period of a few days and I even got as far as getting bleeps back for 11S as the pack voltage dropped. Always powered up.
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---- JR Vibe SGE12 Hiroki Ito Scorpion Tribunus 200A 4525 Ultimate Spirit FBL—-Minicopter Diabolo Pyro750-56 Kosmik200 Vbar v5.3 ----- T Rex 700N DFC OS105HZR Spirit FBL --- RJX Vector 700 Pyro750-56 Comp Kosmik 200 —— |
02-11-2013, 09:29 AM | #8 (permalink) |
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Join Date: Jul 2010
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Mine just powered up with a 6S 38% battery on the bench. No issues here.
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minicopter DIABOLO LOGO 550sx scorpion spirit futaba IISI |
02-11-2013, 09:57 AM | #9 (permalink) |
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Join Date: Jun 2008
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It is my understanding that the having a fully charged battery is just a requirement for programming only.
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02-11-2013, 10:40 AM | #10 (permalink) | |
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Join Date: May 2011
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Quote:
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Richard Zappe Team Kontronik USA PeakAircraft |
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02-14-2013, 08:22 PM | #11 (permalink) |
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Join Date: Apr 2004
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Governor store will allow the ESC to compensate for minor variations in peak pack voltage to allow consistent head speed from pack to pack, but per the manual, the ESC cannot compensate for larger voltage variations that would be defined by a different cell count at initialization. I suspect if you put a tach on the model that was initialized with fully charged packs and with those less than fully charged, you would see the difference in head speed in the latter case even if the ESC was in governor store. The difference is not dramatic; the ESC tries hard to achieve stored head speed. I once flew 1.5 times when I went brain dead and forgot to swap out packs between flight. In hindsight the head speed was off, but not enough to prevent me from unknowingly starting the second flight on the same packs.
Ben Minor |
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