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In my Remote Console I see info that my Fronius has status "Running (Throttled)".
My Fronius is connected at AC-in side of MP-II so there is no need to use FQ throttling when battery is full and no grid.
If Fronius is throttled, how it is done and why?
The frequency shifting will work the same way as it does on AC out through the Comms.
And if there is no grid, it has to be throttled where does the excess PV go?
When Fronius is connected to AC-in and grid is gone, Fronius just switches off, as normal ON-grid inverter should. No FQ shifting is necessary.
I stll do not know why in my Remote Console I see info that my Fronius Status is: "Running (Throttled)"?
@MarekP Do you have an export limit?
Throttled to keep within export limit.?
Can also have power op reduced due to high ac voltages.
Ah so they should be off entirely.
I have never used them on AC in. So i could not say for sure.
i have the same: I have one Symo on AC-in and one on AC-Out. Both are "Running (Throttled)", even though they produce full power.
I have noticed the same behaviour, but it is completely unrelated to all comments so far…….
Updating Venus OS to v2.91 is when my Fronius started showing “Running throttled” rather than “Running MPPT”.
Previously, it would only show throttled when it actually was being ramped down and limiting output. Now it shows all the time!
Perhaps related - my MultiPlus II now shows a “Bulk Protect” message too.
I have the same problem. I have two Fronius Symo 10, one conected to AC-IN and one to AC-OUT of a 3 phase Victron Multiplus 5000 system + a Victron 150/85 MPPT. My export limit is at 11kW. Each Fronius has 9kw of panels connected, one using both mppts with two strings, one oriented east and one west, and the 2nd Fronius has only one mppt active with one set of panels facing south. So normally, mid-day, the 2nd one should reach close to 9k production. Instead is running throttled after the other one, matchig his production which is never above 5-6k. The result is even if I have a high consumption (charging the car, etc), still the system is not increasing the production and there are cases when is taking power from the grid. Could it be a bug in the ESS assistant, as I have defined that there is a PV inverter connected on AC-OUT of just 9kW (as it actually is)? I will try to modify it and see if there is any change.
Short update: I have modified the inverter power and pv panel levels in the ess assistant (from 10000w to 15000w as maximum accepted by a 3 phase Multiplus 5000), and no change. Still both Fronius have a matching (almost identical) instant production level, even if they have different strings with different orientations. I will open up a ticket to Victron.
Hey,
any news how to fix it? I have nearly the same thing going on.
Thanks
