Solution for not working Gen2Chargers with replacement boards

[kendo]

There have been various reports in this forum about Gen2Chargers not working with the replacement boards.
I just had two like that.

My solution:

The internal CAN bus must be terminated with a total of 60 ohms!
Since there is no termination on the three charger modules themselves,
there must be a termination of 60 ohms on the controller board.
As is the case with the original board!

Unfortunately I found on the schematic of all Gen2TeslaChargerV1 - 5 a termination of 120 ohms.
Or I had prunes on my eyes during the investigation?

Either way, many thanks to everyone who pushed the development of this board forward.

[P.S.Mangelsdorf]

There have been various reports in this forum about Gen2Chargers not working with the replacement boards.
I just had two like that.

My solution:

The internal CAN bus must be terminated with a total of 60 ohms!
Since there is no termination on the three charger modules themselves,
there must be a termination of 60 ohms on the controller board.
As is the case with the original board!

Unfortunately I found on the schematic of all Gen2TeslaChargerV1 - 5 a termination of 120 ohms.
Or I had prunes on my eyes during the investigation?

Either way, many thanks to everyone who pushed the development of this board forward.

CAN bus termination should measure 60 ohms, which is achieved via a 120 ohm resistor on each end of the bus. Since they're in parallel, that results in the 60 ohm total. Hence the board has one 120 ohm resistor.

It sounds like, from what you've seen, perhaps there are some versions where the internal bus does not have its own 120 ohm resistor.

[johu]

Very short CAN buses mostly work with 1k termination or something.

Is this proven to be the culprit? I.e. 120 - doesn't work, 60 - does work?

[kendo]

YES! it was