Evse Testing - Error No Ground

[Birol Öcal]

Hi, I finally built my openEvse but before connecting the plug output i built openEvse test circuit to the openEvse pilot output.

I test the openEvse in state B with 2.74k resistance and in in state D with 246 resistance, the lcd display shows the “Ev Connected” and “Ventilation Required”. Thats okay, no problem.

But when i test the State C charging, the lcd display shows “Charging” a few seconds but then it shows “Evse Error No Ground”. Whats the problem? I used the 1N4004 diode in test circuit? Wrong diode model or something else?

Birol

[Nicholas Sayer]

What this means is that the ADVPWR test circuitry is not detecting AC on either of the hot lines.

There are a number of possibilities.

What board are you using? It's conceivable that you're using a board that entirely lacks the ADVPWR test circuits, but that's less likely.

If you built a DIY board, then it's possible that you installed the opto-isolators incorrectly.

Did you hook up the AC Test connections? Did you hook them up correctly? Depending on which board you have there could be two AC Test points or three. If there are two, then they connect to the relay(s) load pins (the ones that connect to the J1772 cable hot lines). If there is a third, then it must connect to the ground bar. Missing any of these could explain your results.

[Birol Öcal]

Power supply is 220V single phase and neutral and i connected the AC inputs relay input. I did the ac ground and openevse ground.

No i did not hook up the Ac test connections to the relay output and not connected the J1772 yet. I wanted to know if the openevse is running or not so i built up the test circuit and connect the pilot output(12V) to it. 

Like i said state B and State D are okay but in state C "charging" i got a ground error after a few seconds.

this is the rest circuit i used

https://code.google.com/p/open-evse/wiki/EVSE_TESTING

Do i have to AC test points(two) to the relay output to do this test circuit? And J1772 cable? 

 

8 Ekim 2013 Salı 17:22:24 UTC+3 tarihinde Nicholas Sayer yazdı:

[Nick Sayer]

Not having AC test connected to the load side of the relay explains your results. 

Sent from my iPhone

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[Chris]

Do i have to AC test points(two) to the relay output to do this test circuit? And J1772 cable?

 

Yes, you must connect the AC test points to the the output of the relay. For testing the J1772 cable does not need to be attached.

 

Beacuse you are usnig single phase, you may also want to disable L1/L2 auto detect in the menu. Change the setting from Auto to L2.

To enter the menu press and hold the button. short presses to scroll through options. Long press to select.

 

 

 

 

 

[Birol Öcal]

8 Ekim 2013 Salı 18:58:34 UTC+3 tarihinde Chris yazdı:

Nicholas Sayer and Chris, thank you for your helping, it works perfectly.