DC/DC charger reduces charge current when I enable Engine shutdown detection

DIY
,
1

Morning,

I noticed recently that my DC/DC 12/30 only charges my Aux battery at max 10Amp. I have a standard alternator. By chance I disabled the Engine shutdown detection and my charging current jumped up to around 27Amps. What am I doing wrong, and will I drain my start battery If I leave this setting disabled?

Screenshot_20250721_082739
Screenshot_20250721_0827391080×2340 118 KB

Screenshot_20250721_082449
Screenshot_20250721_0824491080×2340 116 KB

2

You need to tinker with the voltage setpoints of the engine shutdown detection. If the orion derates then it is operating inbetween point 2 and 3 of the diagriam

image
image1771×713 129 KB

Input voltage might be a tad low, so the input current gets reduced