Not successful to make it working

[dariusz737]

What is authorization?
I have such errors
All meters are off in board.config. Fixed cable.
Please help.

[dzurikmiroslav]

In your log I see "Error bits 2" which has value https://github.com/dzurikmiroslav/esp32-evse/blob/master/components/evse/include/evse.h#L12
Diode short mean problem of diode in EV side, are you testing with car? or have EV simulator circuit like this?

Do you have a oscilloscope ? Check if CP go to -12V.

[dariusz737]

Thank you Miroslav for prompt answer. I did everything described in wiki, (with simulator), all values are correct. After connecting car when charging is not "enabled", green diode starts to blink. But after I switched "enabled", it shows error. I have direct connection, no socket. Is there (should be) any resistor build in charging cable? Is there an option to have "disable" charging by default after restart? I don't have oscilloscope :( Please explain me what is "authorisation" and what is expected behaviour when sen to ON or OFF.

[dzurikmiroslav]

When Authorization is ON, you always need to click Authorize button after connecting EV to start charging process.

Set in settings System / Charging available -> OFF and connect EV simulator in state A (diode + 2k72 resistor only).
CP should do only negative signal, measure voltage on CP.

[nagyrobi]

2k72 resistor

Was about to ask: the drawing shows a resistor of 2k74, here you mention 2k72, but I assume these are just mistypes, I guess we're talking just standard 2.7k resistors... (1% maybe).

[dzurikmiroslav]

Sorry, yes I mean 2k74. I think 2k7 should be suitable, I can see these being used on the internet...

[dariusz737]

Problem was with TL081, I have changed it and started working. But, if I chose cur_vlt, there is an error with reading current, and immediately disconnect with Error bits 1. Most probably reading much to much current. When CT is noc connected, shows 0.32A, and correct voltage reading, allowing to charge. Any chance to see current reading without charging, for example from some test circuit. CT is 2000/1 ...

[nagyrobi]

I plan to integrate it with ESPHome via ModBUS.

[nagyrobi]

I make new version 0.9.0, which has three phases option in energy meter settings.

Does this change Modbus register 315? And the description on Connection examples?

[dariusz737]

I see option to switch 3 phases now in settings. The point is that when 1 phase metering selected, it should multiply power by 3 assuming balanced load on 3 phases. Please add such option. Where are you from exactly in Slovakia, maybe not so far so we can meet for a big beer :D

[dzurikmiroslav]

I make new version 0.9.0, which has three phases option in energy meter settings.

Does this change Modbus register 315? And the description on Connection examples?

Yes, register 315 values are now different, I will update docs...

[dzurikmiroslav]

I see option to switch 3 phases now in settings. The point is that when 1 phase metering selected, it should multiply power by 3 assuming balanced load on 3 phases. Please add such option. Where are you from exactly in Slovakia, maybe not so far so we can meet for a big beer :D

Yes, when you have board config with single phase energy meter, and in EVSE / Energy meter settings three phases are true, L2&L3 voltages and currents is copy of L1. I am from central Slovakia ;-)