AC Out active in charger mode

DIY
1

That’s how it works. “Charger-only” never switched off the output and it isn’t even possible from hardware design.
Just take a look at the block diagram:

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As soon as the relays at the input are closed the AC IN and AC OUT are connected together.
There isn’t an extra charger inside, it uses the same electronics for charging and inverting.

3

second thoughs
The charger can only be supplied from the AC Bus supplies on either side of the inverter. ( input or output )

Control state of the inverter or charger will not effect the AC supply state. Meaning that the AC output must be live whenever The charger is working.

Inverter and charger states are switched but their outputs go in different directions

sorry for my brain fad

4

So what is the point of Charger Mode? I’ve been trying to create a way to disable loads when battery gets low thus giving a weak grid or generator input some time to recharge the batteries. I’d hate to use a contactor and relay but I may need to. I thought this was the point of Charger Only mode but it seems to be incorrect unfortunately. So it begs the question, what is the point - and how would you solve this problem?

5

In charger only mode, the unit will never go into inverter mode when the ac is off or insuficient to drive the loads(boost mode).
This is a very usefull function for boats left unattended at marinas for example. This insure that the AC loads will not drain the batteries.

They are no direct option to disable some loads based on battery level. By design the quattro and multi give priority to the AC Loads. It is possible to control an external relay using the Aux output of the unit and virtual switch or assistants. This would be the only way.