Sorry if this is a recurrent topic (I did not find something similar in my searches) but I am having issues with my semi - DIY board and I don’t know what can be the issue
I have custom made battery 10s5p - 18650 Mh1 - 50 cells - 16 000 mah in total (someone made it for me) and BMS attached to it
this one from Flipsky
Flipsky BMS 8S-14S LiFepo4 Li-ion 24V 36V 48V Battery Pack Protection 150A for ESK8 / Electric Scooter
and also I have Vesc 4.20 from Flipsky
Dual FSESC4.20 Plus (Based on VESC ) with Anodized Aluminum Heatsink
and the v4 remote (although I don’t think the remote is the problem…)
I tried setting it up using the Vesc tool based on the ESC video example provided on the ESC
But the power just cuts off randomly. The ESC does not disconnect or anything like that; it just cuts off. The remote vibrates for a second, and it just goes back to normal.
the motors are the only wild horse here as they are direct drives from an old revel kit (that I no longer have any details on but I considered them to be 750 g motors in the VESC setup) I also tried with the smaller motor option when programing vesc but the issue was the same…
Am I doing something wrong in the VESC setup? I do the same as in the video only that I put on the options 10S and 16.000 mah which might be wrong as I saw a lot of 10S5P batteries with less than that, but that’s what the guy told me it has…
Cut out could be motor wire shortage. Check the wires that come from the motors. Make sure the sleeves are not damaged. If so. The wire could be arcing to another wire or the metal trucks and causing cut out. This will also cause your esc to glitch and your remote to loose connection
Another thing to look for Is cracks in your solder joints. If somebody used the wrong solder… The solder will get hot and crack Causing a disconnect. I use silver solder.
It happens under load (me on it) and when testing I was looking in my hand at the remote to see what it does and it just turns read somewhere up in the display but does not shut down or filkr just a read symbol in the far top right corner for 1 sec then it comes to normal and I can accelerate again…
Is your esc set to not hit that limit though? Your battery and esc may be able to deliver higher amps than the bms is allowing and cutting off momentarily.
Had similar issues when I was making a battery dyno, my fix was battery cutoff voltage (I previously had it set wayyy to high since I would change from 12s to 10s and sag would cut it off), so sanity check that.
Also, I see you’re on a vesc4. This is older hardware, I highly recommend you upgrade to a vesc6 based board if you’re able. They’re more stable and reliable than vesc4’s, and can more reliably run FOC. Would also probbaly solve your issue here. Makerx dv6 might be a good fit.
Also, the motors act a little bit Strange and it seems that the ESC is receiving commands when I’m at already 15% throttle, and if by any chance hover around that dead spot the motors struggle to work…
on the bench is more evident, while riding I did not feel it tho, only the cut in power, will set the above-mentioned parameters and test it in the parking lot
Is there a way to save in VESC tool after I set the above-mentioned parameters?
I connected, changed the values as mentioned in the advanced and current tab, then clicked DIsconect and checked again if they were saved by connecting again and I saw that the paraments were reset, is this normal?
