Enginer 3KW Converter Adjustment

Similar to my other recent thread (Enginer Charger Adjustment), I'm trying to adjust my Enginer converter. I found Johnny D's extremely helpful thread showing the adjustment for the 5kw converter, but unfortunately the trimpots are not in the same place on the 3KW converter.

Anyway, if anyone happens to know the functions of the various trimpots on the 3KW converter, I'd be extremely grateful if you could help me identify them. I'm adapting the converter to a Lexus ES 300h (Avalon Hybrid platform), so I need to get the voltage up to about 290 and drop the current to around 5-7 amps. I've played with all of the trimpots while monitoring output voltage, input current, and output current, but so far I've only determined that either A or B are voltage adjustment trimpots. Using those two, I was able to raise the voltage to 285 but the current kept creeping up along with the voltage so I stopped in order to avoid overloading the converter by exceeding 3000 watts.

D might be the low-voltage cutoff, because when the red lights were flashing and I turned D, the red lights stopped flashing. Not entirely sure though because it's not easy to test that one since you need to be working with a dead pack.



Here is my full setup. It's obviously in "test mode" now- I am taking the 12v signal directly from the 12v battery and everything it pretty messy overall. I did get the output wires on the converter hooked up to the Lexus hybrid battery in what appears to be the correct place (hot when in ready mode, 0v when the car is off). I'll clean it all up once I get it adjusted all the way.



Thanks all!

 

I'm going to go experiment some more this afternoon so I just wanted to bump the thread one last time to see if I could be lucky enough to connect one of the experts on this forum who might happen to know this info. I'll post my results if I make any further discoveries. Thanks again everyone!

Update: I had a successful day of testing but have more work to do. A seems to be voltage (counterclockwise increase), B seems to be current (counterclockwise increase), C makes no difference whichever way I turn it, and D is low voltage cutoff (counterclockwise decreases the voltage at which the red lights flash).

Still not confident enough to drive around on it without more experimentation, but I was able to raise my hybrid battery from 41.8% to 61.2% as reported by an el-cheapo OBD tool while holding the current to 20amps on the lithium batteries, which is about 1000 watts and somewhere under 3 amps to the hybrid system at 290 volts factoring in converter efficiency. I will turn the power up once I'm confident in my voltage and current settings, but it's encouraging to finally make some headway on this project that I started almost 3 months ago.

 

THANK YOU!!!! HUGE THANK YOU!!!!

I'm not surprised that I had it wrong about A and B- I was adjusting everything while the car was running and the converter was on, so I was probably very close to the max voltage and open voltage set points at the same time so B had the effect of limiting current when in reality it was limiting voltage. I'll need to play with the current (C) some more- it's the one I'm most concerned with because I don't want my converter to go poof if it was set for 3000w at 241v since I'm now running it at 290v.

It looks like I have a counterclockwise unit; glad to hear that some units had them reversed and that I'm not losing my mind

I made this thread and my other thread at different dates but ended up having both go active recently; I'll confine my updates to this one so that the other one falls down on the list.

Again, HUGE THANKS!