I think I reset via the CAN tool after it didnt work

Those parameters look like the generic default, not based on an LDU set.
Take these and go from there: https://openinverter.org/parameters/view.html?id=33



Yes this would make sense in most cases. Just recently someone ran a synchronous motor with an SDU inverter, for whatever reason. It's ...

Yes, a base tune will work in a sport/performance LDU. The sport version just allows you to turn up the power, which I've mostly done by raising fslipmax and lowering fweak. (I switched from a base to sport inverter)

There are two LDU tuning threads, on one of them Jon Volk has a good outline of ...

Be aware that not all parameters are shown (to keep you from changing them). Using the upload parameter function will apply them anyway. It means that trying to apply parameters manually will miss the most important ones.


I would have expected the hidden ones to be set by some flags in the ...

Some updates but no change in the issues:

I connected a scope to the encoder on the oi board, directly to the STM pins here is the image I captured at 12.8 RPM:
Image

I also swapped the A and B pins on the encoder again without a change in behaviour.


Any additional ideas reguarding the ...

The ones Johannes shared are a good starting point. I've also attached my old base tune. I've got to pull a more recent one off my workshop laptop at some point, but this one was a pretty good street tune with a base LDU.


I will also have a look at those. Let's hope they work on performance LDU ...

johu wrote: ↑Tue Apr 21, 2026 2:47 pm Those parameters look like the generic default, not based on an LDU set.
Take these and go from there: https://openinverter.org/parameters/view.html?id=33

I will try again using these parameters. Yes they are generic default. I assumed that they would work as a starting point for further tuning.

All default except UDCmin, throttle via CAN and disabled regen. The end of the video has a slow scroll through

Some updates but no change in the issues:

I connected a scope to the encoder on the oi board, directly to the STM pins here is the image I captured at 12.8 RPM:


I also swapped the A and B pins on the encoder again without a change in behaviour.

Before changing the encoder cable I did the pin swap and also had an oscilloscope attached to the data lines. I also tried a new encoder. Here are the results:

Cable swap to a properly shielded one: no change
Pin swap: no change
Encoder swap: no change
The oscilloscope had an incredibly noisy but ...

I'm currently working on a project in which I want to operate a LDU in a static test environment. Therefore the initial spinup test is basically my whole setup and I need it to work flawlessly. But I have issues:

The LDU won't spin faster than 12.8 RPM, except when alowing for more rotor slip ...

Example, you want to run a sweep? or a fixed rpm? ect.

I'm not quite sure right now. A sweep would corespond with many approaches of control theory but using PLL in my analysis would require several different fixed RPMs. In the end I want to capture vibrations to identify faulty bearings and ...

Ask questions with context please, what are you trying to achieve?

You want to tune an LDU, okay what is the base param set you are using and what does it not do that you want it to do?

I think I answered what I'm trying to acheive. I'm building a dynamic test stand to validate motor repairs ...

TLDR: There are a lot of parameters to configure / tune a motor. What do they do and how do I tune them?

Long version:
I recently started working on a dynamic test stand for repaired Tesla LDUs. The control is handled through an openinverter board.
My current testing motor is an LDU performance ...

I deleted the mapping and now things work better than before. I still don't know how they got there, epecially since the board was never used when I started.

After a reset of the stm via the oic-can-tool the webinterface shows the mapping of canspeed again. During the first use I deleted this mapping therefore it was not shown in the GUI.
I laso have some trouble with the web interface as I more often than not get "Communication problem between ESP and ...

TLDR: I'm quite new to this whole thing and I noticed my CAN mappings on ID 63 (0x3F) are not the same as in the wiki. What went wrong?

I recently started working on a projekt involving the openinverter board for the Tesla LDU and full CAN controll. naturally I looked up the CAN mapplings and found ...