Hecht equis 3000W electric scooter, replacing the controller with a Votol EM100SP

[rollex]

Hi

I installed a 72V 30Ah 24S LiFepo4 battery in my scooter. The scooter has a factory speed limit of 45 km/h, so it can be adjusted a bit. I bought a Votol EM100SP and started tweaking it. I only connected the power supply, throttle, and Hall sensors. I set all the parameters in the software (EM-V3-EMsport), and everything froze. The scooter isn't working properly. I manually tested all 36 phase switches, Hall sensors, and angle changes, but to no avail. With some scooter settings, the wheel spins on the kickstand when I accelerate. On page 3 of the software, in the window during acceleration, the value goes from -0.4 to a maximum of 2.7, and then drops to 1.4. However, when I turn the scooter on the ground, it has no power and stalls. The auto-learning function is only available via cables (there's no auto-learning button in the software) and cannot be activated from the device with a combination. All brakes, pedals, etc., are off.

I checked the Hall sensors with a multimeter and they're closed. I have no idea what I'm doing wrong. Can you advise me? I'm using Google Translate, so please translate for any errors. If you need diagnostics, please let me know and then report them.

 

[bananu7]

Your post got sent in Polish, might want to correct that.

To enable autolearn, you need to temporarily assign the input to one of the connectors; by default it's not exposed.

If the wheel turns that indicates the three-phase connection and throttle setup might be good, but if it cuts out with resistance it might be voltage limits or the bms cutting off for some reason. Is your battery full? Are your voltage limits set correctly?

Also might be a good idea to post complete screenshots from your current settings.

 

[rollex]

Hi, I probably had the phase current set too low. I ran the auto-learn according to the instructions on YouTube and it finally worked. It found an angle at which the wheel rotates at full power, but when it reaches maximum, it makes a noise like it's rubbing against brake discs. I'm not entirely sure how many pole pairs I have. I slowly turned the wheel and counted how many times a meter connected to the Hall signal read 3.3V. I got about 30. Does that mean I have 30 pole pairs or 15?

 

[bananu7]

but when it reaches maximum, it makes a noise like it's rubbing against brake discs

Glad that you got it to work. If it starts shaking at max speed that might indicate a wrong value of the Ki param or too aggressive FW. Read the programming manual again, it should cover fine-tuning of those values.

 

[rollex]

I'm trying different settings and pole pairs. When I set it to 14 pairs, it works a little better, but it also spins the wheel slower. I'll add a few screenshots; maybe you'll notice something that might be the problem. I'm a novice at these things and thought it wouldn't be that complicated. I might have to go back to the old controller, which I regret. I will also give you the engine code I found on the wheel :ZN72V3000WP3200086.
When I turned the throttle all the way up, the rpms reached 1500, and then it would rattle and surge. In third gear, I had to lower it to 35%. Only then did the rpms reach 1200 at maximum, the noise stopped, and the wheel turned relatively steadily. I set the other gears to 10 and 20%. In those gears, it also revs up to 1200 rpm, but accelerates more slowly.