VESC v2.18
Torque Board 6374 190kv motor
9s battery (three 3s batteries in series), each has 20c-30c discharge and 5000mAh
VESC and motor from
My first question, to possibly rule out my other issue, how do I wire the motor to the VESC? I can’t seem to find anything about this online. I’ve watched a few videos (the one’s that diyelectricskateboard links to), and matched up the wiring to what I saw in the video.
However, my main issue is when I try to configure the VESC. When I go through the BLDC detect motor process to set the Integrator limit and BEMF coupling I get a “bad detection result received” error. I’ve tried a couple of things suggested elsewhere on the forum (changing the battery cutoffs a little, upping the amp from 6 to 8 amps) without any luck. So, what’s my next step to solve this problem?
That didn’t work, but definitely could have been contributing to the problem. After I loosened the motor on the motor mount a bit I was able to turn the motor more freely than I was able to before.
Not sure if this helps at all, but here’s how I have my VESC connected to my motor:
Hey, with your phase wires, you see that the heat shrink doesn’t cover the whole connection. It may not be the problem but make sure they aren’t contacting each other. With mine I just put extra electrical tape over them.
Also maybe try switching wires around? It won’t do any harm just switch direction of motor.
The problem isn’t them not being in properly. Some people have had detection problems cause the phase wires actually touch each other and short the motor. Just be weary of that
I don’t believe they were touching when I was trying to program the VESC, but I’ll definitely wrap them in electrical tape to prevent that from happening once I get everything sorted out.
Yeah still no luck. Unscrewed the motor screws a bit more. The motor is able to turn pretty freely when I turn it manually. Also wrapped the phase wires with electrical tape where they were exposed.
The VESC seems fine (being able to connect and read/write configurations to it), could it just be a bad motor? Any thing else I could try before going down the route of getting another motor?
When I powered everything up for the first time there was a quick sputter, but nothing since.
What about battery, right now my 3 x 3s setup has about 3.72 - 3.76v per cell. Should I charge them up and try again, or would this not change anything I’m seeing?
maybe youre hitting your low voltage cut offs. try charging. you’d be hitting at least the first. but if you crushed the motor wires that’s not good. you have a high precision multimeter that shows inductance or details resistance to test the motor?
Was able to test the resistance on the motor (I don’t have anything that tests induction), I’ve tested the connection between all three of the wires coming out of the motor (wire 1 to 2, wire 1 to 3, wire 2 - 3) and have a complete circuit without any resistance (at least none that registered on my multimeter).
Still haven’t gotten around to charging my batteries or changing the configuration of the cutoffs.
Bought another VESC and motor. Swapped the motor, no luck. Swapped the VESC everything worked fine. Swapped back the original motor I had and that worked as well! So, bad VESC was the culprit.
