openinverter forum

Looks like I might be investing in a long steel bar to do some experiments

Romale wrote: ↑Tue Aug 13, 2024 10:04 am item "a".

Hm... i am thinking of connecting to my other inverter and sensing unknown wires for transient signal when putting it in short. Of course i would be doing this with 48Vdc power supply...

In Volt inverter i see fault signal as a weak pullup with NMOS pulling it down when inverter is active. If something would happen control would release the pullup and stop the logic. A failsafe design.
If control is any similar the signal would look as a pullup to Va when powering up. Then when you start the PWM you should see that signal drop and if you provide any 3V to that line you should see a stop to PWM.
I think that would be best tested with OEM wiring intact, since inverter already requires 12V signal to operate. If you remove that signal you stop PWM completely.

@Romale: I put general info of Outlander inverter OI lobotomy to wiki. Feel free to input more data.
https://openinverter.org/wiki/OEM_Inver ... dification

Hi. Yes, there is one significant edit. The HV signal must go through a divider of two 3.3 kOhm resistors. Otherwise, the level becomes too high after about 330 volts and the v3 board is not able to fully measure.
I soldered two resistors directly at the input of the measurement wire, through one signal itself, and the second from the entry point to the ground.

Ok i put the latest comment in there as well...