Thank you very much Azzuro for these investigations.

If you wish, it is possible to make a low pass filter at 3khz at the input of your oscilloscope by proceeding in this way:

- hypothesis: the input impedance of the oscilloscope or the probe is 10Mohms

- add a resistance of 10 Mohms between the measured signal and the oscilloscope (in this case, an X2 ratio will need to be added to your probe setting)

- add a 10pf capacitor in parallel with the oscilloscope (if the oscilloscope already has an equivalent capacity at the input, you can reduce the value of the capacitor to be added).

Do you want me to draw a figure?

To make things easier for you, I can send you these components by lettrer or even make a small test plate, and depending on your connections, I can also arrange BNC connectors. Don’t hesitate to take a photo of your oscillator or give me its model so I can check its input characteristics.

Thank you again for your patience and don’t hesitate to let me know if I’m asking too much...

Best regards,

Lionel

Merci beaucoup Azzuro !

Hello Azzuro,

I upgraded the software version of the MC from MCR2042-1 to MCR2042-4 but nothing changed in my problem.

Indeed, I’m missing some power, and the engine’s behavior makes me say that a phase is missing. Although the electrical signals recorded tell me otherwise.

I measured the resistances of the motor coils, motor disconnected. About 0.1 ohm for each coil.

By rotating the wheel by hand, I feel the positions of the magnets. I notice that:

- on a position I can accelerate

- on position + 1 I can accelerate

- on position + 2 nothing happens

- on position + 3 = the first position I can accelerate

- and so on...

Regarding the position sensor calibration, it also turns off in the middle of the procedure, which seems normal if a phase is missing: I made another video, 2.35 minutes, and I shared it from my drive.

Have a good evening,

Lionel

Hello Azzuro,

Yes, i sent you news link from my google drive.

Have a good evening,

Lionel

Hello Azzuro,

I’m sorry for the delay in my response.

All this time allowed me to better understand the operation of the position sensor.

https://docs.google.com/document/d/1hGfxLRdMFslErmc_yufb86nrYWMRoTVMPQI3SUXZKNI/edit?usp=drive_link

In my opinion, the sensor works well.
I also subsequently installed 3 oscilloscope probes on the power outputs that control motors A, B, and C.
As the controller builds the sinusoids from PWM commands, I used low pass filters at 3khz to visualize the control waves.
Here is the recorded video.

https://drive.google.com/file/d/1JQCNpny89uoLUOs7Mgi_NxsZC2arXu8t/view?usp=drive_link

For me, there is indeed a problem with the control of the motor controller. The PM300 seems to be working because I have the same signals on these inputs.
Shouldn’t I reload the controller’s code?

Thank you for your help.
Best regards,
Lionel

Thank you Azzuro,

I also have the 12 pages of electronic diagrams that help me understand part of the operation. I am still sending you my email address which could be used for the future...

Have a good day,

Lionel

Sylvain, 
Do you have a link for the VECTRIX WORDWIDE Whatsapp Group ?
Thanks

Hello Azzuro,

Via the J5 connector, I was able to control the signals coming from the encoder. I found square signals on the 2 inputs "Encoder Incremental Input". Those are signals whose frequency varies with the rotation speed. About 5Khz at 10km/h. As I don’t have differential oscilloscope probes, I couldn’t visualize signal A compared to signal B. So I don’t yet see how the processor measures the angle in degrees (but I will try soon with isolated probes).

No signals on the "Encoder Hall Sensor Input" inputs.

To control the signals at the input of the IGBT, would you please have the layout diagram of the components? I can send you my email if you want.

In advance thank you!

And especially thank you for your help and patience :) !

Thank you very much Azzuro,

I will try to take measurements this weekend.

- return signals from the encoder

- input and output of the IGBT (paying attention to the different GNDs)

Have a good weekend,

Lionel

Bonjour Azzuro, voici les dernières nouvelles : (en anglais plus bas)

J'ai remplacé le fusible en panne. Après remontage du contrôleur moteur, je n'ai plus les erreurs "CAPCur" "Vcellow" "Vcellmax" sur le tableau de bord.

J'ai fait votre diagtest et je n'ai rien relevé d'anormal, pas de "0" , pas de "nots".

Par contre je n'arrive toujours pas à étalonner l'offset du moteur et j'ai toujours des accélérations chaotiques.

J'ai utilisé un oscilloscope pour visualiser les tensions et courant moteur. (avec un filtre <3000Hz) Je vois bien les 3 tensions de phases. Je constate cependant qu'en fonction de la position de la roue (chaque cran doit correspondre à 1 aimant et 120° du capteur) il y a une position sur 3 ou je n'ai pas de tension et rien à l'accélération.

Je n'imagine pas que le moteur puisse être à l'origine de ce problème.

Est-ce que l'outil de diagnostique permet de visualiser la position du capteur en live ?

Je peux vous proposer un échange téléphonique ou par visio pour vous montrer la forme des signaux que j'ai enregistré si cela ne vous dérange pas trop.

Bonne journée et à bientôt,

Lionel

Hello Azzuro, here is the latest news: (in English below)

I replaced the broken fuse. After reassembling the engine controller, I no longer have the errors "CAPCur" "Vcellow" "Vcellmax" on the dashboard.
I did your diagtest and I didn’t notice anything abnormal, no "0", no "nots".
On the other hand, I still can’t calibrate the offset of the engine and I always have chaotic accelerations.
I used an oscilloscope to view the motor voltages or current. (with a <3000Hz filter) I can see the 3 phase voltages well. I notice however that depending on the position of the wheel (each notch must correspond to 1 magnet and 360° of the sensor) there is one position out of 3 where I have no tension and nothing at acceleration.
I can’t imagine that the engine could be the cause of this problem.
Does the diagnostic tool allow to visualize the sensor position live?
I can offer you a telephone or video exchange to show you the form of the signals that I have recorded if that doesn’t bother you too much.

Good day and see you soon,
Lionel