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dzurikmiroslav / esp32-evse

ESP32 EVSE firmware
GNU General Public License v3.0
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Pilot fault after power outage #71

Closed redonebebu closed 1 month ago

redonebebu commented 1 month ago

Is it normal that after a power outage when the power comes back on again in I get a pilot fault and have to plug out the car first. I expected the car continued with charging. When I simulate this with resistors and diode I get the same result.

This is with the ESP32DevkitC EVSE and v0.10.1

dzurikmiroslav commented 1 month ago

I would be interested to know exactly what kind of car it is? Yes, charging takes place in the C/D state, it cannot jump directly to the C state. I have implemented this state diagram: image

If the EV is connected before the EVSE is turned on, it should go to state B, not C.

redonebebu commented 1 month ago

The car is a Tesla model Y but maybe I did not wait long enough. I just cut the power while charging and then turned it back on again and the error led immediately turned on. Maybe the car does a reset after some time. I will check it again later.

When I connect the car with the Tesla Mobile connector and pull the plug out while charging and then plug it back in the car continues charging. When doing this with diode and resistance connected between PE and CP it goes back to charging state after 50 seconds.

The next time I test with ESP32-evse I will wait at least 5 minutes to see what is happening.

redonebebu commented 1 month ago

Ok tested it again but the first time I also noticed the Amperes set by ESP32-EVSE did not corresponded with the vehicle. So I replaced the Chinese TL081 with one from a trusted shop and now everything is working correct.

If I cycle the main power the car starts charging again immediatly. Lesson learned: don't trust Chinese parts.