ESS system Power ON / Active AC input - disabled

Q&A and troubleshooting
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1

Just finished my first install of Victron ESS + Fronius PV.

The system is as simple as possible:
Multiplus II GX 5000
Dyness DL5.0C battery 5.12kWh
Fronius Primo 3kW on AC output 1
AC input 1 from grid, AC output 1 for all consumers and Fronius.

Upon swithing ON the main fuse, the MP / GX started but no output on AC OUT 1.
The remote console in Settings-Devices-MultiPlus-II was showing “Active AC input - disabled” despite the correct values shown on AC In 230V / 50.1 Hz.

After 5-6 minutes of searching the community, the MP switched relays and, finally, got power in the house.

Is there a delayed Power ON function, in order to test/sync with the grid ?
Fronius have such a “grid test delay” but I have not found any mention in Victron / MP documentation.

2

I haven’t experienced a 5 minute start up.

Di you switch on the batteries wait for th GX to boot then switch on the inverters?

Myabe your batteries were tripping and reatarting untill finally there was enough precharge in the inveeter power banks to start up?

3

The actual time is 15 minutes, measured during last grid switch off.

The GX within MP is up and running, given the battery is ON. The 15 minutes is the time MP waits between AC in 1 ON to activate AC out 1.

Kind of strage, given that MP is not grid-tied inverter.

4

For Romania grid code settings, there is a reconnect time of 900 seconds.

That time is adjustable in the VE Configure 3 - Grid - Romania grid code settings - Reconnection time

5

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