Look at the problem, I think it might just be a bad connection over the PPM connector, It migt be that the pin are a little bit shorter, or it could be some oxydation, creating a bad connection inside the connector.
The only time I got these kind of behaviour was cause by a cheap cervo cable, the connector was to tall to reach the pins for a good connection.
What is erpm vs. Rpm ? I run a 270kv motor on 6s. How many erpmās is that ? I have the default max erpm value 100.000 in bldc, should i change that ?
You can estimate your ERPM w/ a calculator like esk8.it
Also see: http://www.electric-skateboard.builders/search?q=ERPM
TONS of info on this - good to know before you fry a VESC.
And if you donāt have a VESC/FOCBOX/ etc. - the 60k erpm limit should not apply.
I have a vesc from esk8.de
Thanks 
Planning to run foc on 12s belt drive with 190kv using FOCBOX safe? or better to just run bldc
That is a little risky, but it can be done. You will be very close to 60k ermp after inefficiences, and maybe over tooā¦
ahh screw it, Iām staying with bldc.
I thought the focbox had a mechanical measure to protect the drv chip from frying?
@Enrico this has been discussed a few times bro, try doing a search & a bit more research, thing is most of the time the motor you buy is not the kv you think, it will be underā¦ so the reality of practice is that even going over erpm by a small amount will not cause any problem. So again I suggest you do a bit more research before you give up to make a informed decision.
Been on the same VESC-Xs since before all the focbox nonsense. We haul ass all over. 12S, 190KV.
Also Weāve been running 13S on them on 190kv motors on MBS 100mm wheels for about a month and a half using an old Tronik sled. That clunky shit is killing it at over 40mph. Not dead yet.
They seem legit. just sayinā
I think my FOXBOX croaked the other day while running 190kv at 12s in FOC. I had done well over 200 miles on it so I thought it was solid. I went on a medium hilly 7 mile ride with no problems but got all sorts of weird data from it with crazy high current readings.
When I went to use it in the morning this is all it did. When I pull the throttle the motor clicks and the VESC resets because of an over current fault (using metr). Its not showing up in BLDC_Tool but I can access and change settings with perimetr.
Yes it protect the drv against some things, but not If you Go far over 60k on the erpm
Now Iāve been runing FOCBoxes on 12S for 1 month with no issues.
Whatās the kv limit using focbox?
That depends on voltage, but I think the Erpm limit is still 60k
What are thevalues of the battery in the BLDC tool. I will have soon a 12S battery and I donāt wanāt to do a stupid mistake.
What cells do you have? What cell count? What KV motors do you have? these are important questions to give you current limits
I have 12S5P 30Q pack carvon v3 so 114 i think
You could raise the battery max current up to 50A, 37.5A if you want to be inside manufacturer specs, but the 30Qs have proven to be a very good 20A cell.
Full disclosure, I donāt use FOC, i use BLDC in Ssnsored Hybrid mode. I may have accidentally something in this thread.
Ive run 70, 80, 110, 130, 149, and 170kv motors/hubs/direct drives at 12S and FOC on the FOC box(some were VESC-X) without any issues I believe were related to the voltage or FOC mode over the last year.
Ive had 1 FOC failure at 12S on a TB VESC but to be fair I had very high motor Amp settings on that VESC (120A).