Hi @lm2292, 

Can you please share a screen shot from the Motion Terminal ( performance monitoring) of the Speed and Iq ? -- we need this to understand how much is the current that is injected into the motor.

Thanks

Milad

Hi @milad, 

see below 

I am going up to 15000 RPM in the speed reference and 10% power reference. 

Hi @lm2292,

It seems that you are using the "Open-loop" topology. is that right (The current shape is not good at all)? if yes, actually the open-loop is not efficient for high current motor controlling, so why don't you switch to closed-loop sensorless speed controlling? 

For that, you need to only put properly the number of your Motor's poles, and using only the speed reference you should be able to control the speed.

- to start experimenting with Sensorless, please use a power supply with limited current till you feel confident that all the parameters are under control.

in any case, to have the highest performance in Torque and speed controlling we recommend using sensors ( like Hall sensors or Incremental encoders).

Let me know if you have any other questions.

Milad

Hi @milad, 

thank you for the suggestions. I will try the sensorless closed loop. 

Would you be able to recommend a hall sensor/ encoder that you have experience works well (has the correct interface) with the SOLO UNO v2? 

Thanks.

@lm2292;

Regarding the Incremental Encoders for SOLO UNO, you need to choose an encoder with RS422 output leveled at +5V, for such an encoder, the presence of A,B, and Index outputs are required, and the Index output must occur only once per mechanical turn.

for the choice of the encoder, you will have many options from industrial models like this one (powered at +5V and using only A+,B+ and Z+ for Index) or from less expensive ones like AMT102-V.

The last point about the Encoders, is related to the mounting, so basically, the Encoder's stator has to be mechanically rigid and fixed with respect to the stator of the motor, this is important since it will define the values for the Encoder calibration.

Milad