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james-marsh asked

First time setup - unsure of correct settings

I am trying to setup my equipment to achieve what I thought was not unique, however, we either get stuck in passthru, the PV charger stops or the AC input is not accepted.

I and looking to achieve:

Sun rises - PV charger start supplementing the AC in to the AC out at the same time

Once the PV charger exceeds the required AC out demand, the surplus goes to the batteries

The batteries charge and once the AC out exceeds the PV charger, it draws from the batteries

Once the batteries are discharged to a set point (i.e 49v) the AC in has 100% of the load to the AC out

The batteries will never charge from the AC in.

Should the AC in be lost, then the inverter carries on to another set-point before shutting down (i.e 48v)

I've added ESS, removed it, added hub1, removed it. No configuration I seem to work with achieves my desired result.

Has anyone got this setup and what settings do I need? I have selected NZ as the grid and am now unable to alter the grid code as I don't have the password. This also means I cannot go to default settings as that requires the same password.


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Alexandra avatar image Alexandra ♦ commented ·

@James Marsh

What pv charger do you have? And does it have comms with the Victron system?

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snoobler avatar image snoobler Alexandra ♦ commented ·
Does the 381W for the "PV Charger" from the VRM dashboard indicate comms with the Victron system?



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Alexandra avatar image
Alexandra answered ·

With ESS installed what is your grid input limit on the GX device?

And what is the grid set point as well?

What us the minimum SOC set and do you have battery life enabled?

How large is the solar array? And is it large enough to cover loads and charge the battery?

What type of battery do you have, is it communicating with the gx (pass through is very often related to battery management over CAN)

If you ran through the linked FAQ did you see anything there that may be related to the system you have installed?

Everything you need to know is in the ESS manual.

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james-marsh avatar image james-marsh commented ·

1. No limit

2. 50w

3. 30% - have tried with and without BE enabled

4. 3.3kw - yes, general use is about 800w most of the day

5. Lead acid batteries (440ah bank 48v), no communication. Only internal victron comms for battery status

6. Only the "charging is not allowed" the system goes to passthru

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