question

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edvanz asked

Gx Cerbo auto start works but Quattro8000 doesn't take the power available

Cerbo GX latest standard firmware, 2x Quattro's in parallel latest firmware. Auto start works based on SOC 30% start and 70% stop and a Skylla-i starts as soon as it sees power from the generator. The problem is that since updating the firmware I noticed (not saying it caused it) that the generator starts as required but the Quattro's don't see the power generated by the generator. But the Skylla-i sees the power and starts charging. Could this be a negative side effect of "sustain voltage" by limiting internal charge voltage to prioritize other charge sources? Which is a setting I never used before. Even if the Quattro's see the charge voltage on the busbar from the Skylla-i it should at least supply the 230v load in passthrough if I am not mistaken. When manually switching off and on both Quattro's the charging starts again.

MultiPlus Quattro Inverter Charger
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1 Answer
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edvanz answered ·

The problem has been resolved. For whatever reason the high voltage reconnect was set below the generator voltage which was a bit high set when the AVR got replaced ie 236v starting the generator up on auto start with a big load, after warm-up. It meant a voltage spike above the max voltage and the disconnect happened but the reconnect never happened as the reconnect voltage was below the 236v the AVR was set to. So now the AVR is set to 230V the high voltage disconnect and reconnect are back to Victrons default settings and peace has returned, I will leave the post up for reference for others dealing with a similar problem

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