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damienmaguire / Tesla-Charger

Reverse Engineering of the Tesla 10Kw charger and development of an open source control board
GNU General Public License v3.0
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charger incorrectly reading cable current capacity via proximity pin #21

Closed KevinSharpe closed 4 years ago

KevinSharpe commented 4 years ago

The charger is attempting to use the Proximity pin to read the value of the cable current capacity resistor "RC" that is located in the EVSE connector (car end).

This may be a bug because the EVSE cable does not connect the two proximity pins at each end of the EVSE cable and some J1772 connectors do not include the cable current capacity resistor. See Open EVSE description of the Proximity pin;

https://openev.freshdesk.com/support/solutions/articles/6000052074-basics-of-sae-j1772

9018719465_9df5c4392e_b

And standard 61851;

61851_B5

KevinSharpe commented 4 years ago

One of my colleagues reminded me that in later versions of the standard resistor "RC" was included in connectors at both ends of the cable. When we get access to the workshop i'll check some cables and see whether we can safely assume "RC" is installed in the car connectors.