Tesla Small Drive Unit Support Thread

[PoloLbricolo]

Thanks a lot guys, it worked !
It appears that the bug with 'speedkp' is not fixed. I did put it to 1 and it worked perfectly. The car is totaly different now.

[Jack Bauer]

Excellent Even I didn't know about that.

[tom91]

A gotya Johannes found out after at Zero-EV we had the same issue and went to the source for help.

[Jack-Lee]

Hi,
i have a SDU and installed a Controller von Damien.
Sadly the documentation is not realy "Noob-Friendly". Is there a Parameter-Setup for the "first Start" ? I dont want to kill the Inverter on first try.

Thx

[PoloLbricolo]

Hi,
I think there is a parameter file on the SDU repository on Damian github. It's called driftparams.json if i'm not mistaken.
https://github.com/damienmaguire

Furthermore, can ask my boss if he is willing to share the parameters that we use.

[Jack Bauer]

Firstly, if you purchased the board from me it will come with parameters loaded. If not here is the set I use :
https://github.com/damienmaguire/Tesla- ... s_SDU.json

[Jack-Lee]

Hi,
Patrick Hagemann here
About two months ago I bought a board from you (built up and tested).
The values for maximum current etc. are set to 5000A, so I was careful if the other parameters are correct.

Thx for the help.

[Jack Bauer]

The current sensor used on the small drive unit is the Melexis MLX91209.
https://www.mouser.ie/ProductDetail/Mel ... 4jl%2Fc%3D

The 7.3mV/mT version.

[Evtorque]

Hi Guys
New here and not sure if there is diagram for the front and rear small drive controller plug wires.

Thanks in advance Conrad

[Kevin Sharpe]

New here and not sure if there is diagram for the front and rear small drive controller plug wires.

Does this help?

https://github.com/damienmaguire/Tesla-Front-Drive-Unit

[Lee Malo]

When replacing a current sensor does it need to be programed ? The manufacturer states the sensor is programmable . Is the current sensor a drop in and solder or does it need to be programed ? Here is a link to Mouser stating it is programable - https://www.mouser.com/ProductDetail/Me ... DN4jl%2Fc=

[PoloLbricolo]

I'ts drop in, just make sure you have it in the correct orientation.

[Lee Malo]

Are both current sensors oriented the same way ?

[Jack Bauer]

They do not need programming and yes they both go in the same way.

[Evtorque]

Cheers mate

What contactor and pre are everyone using?

Cheers Conrad

[Evtorque]

Thanks mate

[Evtorque]

Does anyone have a link for a contactor and fuse supplier for one of these.

Cheers CG

[Jack Bauer]

So a quick announcement on board pricing and lead times. Of late I have been experiencing untold problems with delays and quality from my pcb builder. Some customers have been waiting months for boards which is unacceptable. I have been working to resolve this and am pleased to announce that I have a new pcb maker signed up. Boards will be machine assembled and undergo AOI. This will let me have boards in stock almost all the time reducing lead times to a matter of days and resolving a lot of quality problems. Bad news is a slight price increase on drive unit boards from 500 to 600 euros for built and tested. Bare pcb pricing remains the same.

[ViktorT]

I wonder if anyone knows the size of bolts for the small driveunits to fit each of the motorbrackets?

[Kevin Sharpe]

We've been running some tests on the VW Bus project (here) using a ~200V Toyota Prius battery. The integrated contactors, pre-charge components, and safety disconnect make this a recommended test tool for anyone using the SDU in a project

[tom91]

We've been ... in a project

Mind sharing the parameters you have been using?

[Jack Bauer]

Same as in the parameter thread.

[tom91]

No compensation for the voltage? Makes the drive unit quite laggy down low.

[iak78612]

Just busted my current sensor and if you can't tell from my question then I'll say it explicitly. I'm a noob.

My replacement current sensors will be getting here in a couple of days. Do I just pull out the old sensors from the "goo" and drop the new ones in? or is there something more involved?

Thanks!

[Jack Bauer]

Yes they go back into the goo. Just be aware of the orientation mark on the device.