question

dewitpj avatar image
dewitpj asked

Quattro not lifting DC voltage to pre-charge

Hi Guys,


As you know by now, we have Quattros connected to ZCell. The batteries has run flat now and they are awaiting pre-charge. The pre-charge voltage of 55v is being set by the BMS but the Quattro seems to ignore this. Can anyone please advise how we can get this fixed ?


Thanks,


Pieter

MultiPlus Quattro Inverter Chargerbattery chargingESSRedFlow ZCell Flow Battery
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2 Answers
Johannes Boonstra (Victron Energy Staff) avatar image
Johannes Boonstra (Victron Energy Staff) answered ·

Hello, At flat batteries on a Quattro the AC input 1 must be used. (On AC input 2 the charger will not start without sufficient battery voltage). Beside this the BMS (if connected) need to give the ATC signal.

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dewitpj avatar image dewitpj commented ·

Hi,


We have had ZCell check out the config and it is sending the ATC signal.AC Input 1 is connected and feeding in power.


Thanks,

Pieter

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Simon Hackett avatar image
Simon Hackett answered ·

As per the other thread you open on this topic - upgrade your firmware on the Quattro for a start. Anything earlier than 430 is worth upgrading to at least version 430.


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