In this episode I talk about failure modes in Tesla Model S and X large and small drive units when used with openinverter board. I also demonstrate how to safely test your drive unit and debug any faults.

Openinverter Wiki Start page: https://openinverter.org/wiki/Main_Page

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00:00:00 Intro
00:08:22 Test main busbars (H.V. in) on DU with multimeter
00:10:10 Flip multimeter polarity and test busbars again
00:11:07 What do we NOT want to see?
00:11:48 More multimeter tests
00:14:21 Explanation of tests
00:15:25 12v test logic board
00:16:00 12v power in
00:16:51 Application of 12v power
00:17:43 Soldering the board connectors
00:19:73 Flux application
00:21:50 Soldering starts
00:28:37 Checking solder
00:30:29 Second 12v test to ensure proper function
00:33:22 Installation of logic board in drive unit
00:35:46 Encoder test intro
00:36:39 Parameters check
00:39:03 Getting into RunMode
00:40:23 Plotting speed values
00:42:55 Spot value check
00:44:52 Spin test setup
00:48:24 Power supply startup
00:50:33 Spinning the drive unit/mistake
00:52:08 What’s inside a drive unit/how does it work?
00:59:12 How an OVERCURRENT error happens
01:11:46 How to prevent OVERCURRENT during testing
01:16:23 How to prevent OVERCURRENT during driving
01:22:45 Outro