V3.64 - V3.70 beta - can't set peak shaving with internal grid meter

Beta testing Venus OS beta testing
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expected behaviour; enable and disable both limit system AC import and export current when using the internal grid meter

how it doesn’t work; both switches are greyed out and can’t be set. When switching to external grid meter (even when none are present) the switches do work. When set to internal grid meter after enabling a switch i can set the current limit but switches are greyed out again.

details on the system; DESS system with cerbo and multiplus 2 48/5000/70, 2x MPPT150/45, 1x SMA SB5.0AV41 AC PV inverter. All loads and PV inverter on AC out. Only using the internal grid meter, no other meters connected. All firmware up to date. Happens both on v3.64 en v3.70 beta.

Unable to set Peak Shave Current Limits
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Thanks for the report @mac ; is being looked into

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Update on this, both on 3.7~32 beta and 3.65 official the bug is still present.

Also with peak shaving enabled i can set a max import current but peak shaving does not work.

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Did some more testing, with a grid meter installed the peak shaving function works as intended. Without a grid meter the limit AC input current in the inverter settings can be used.

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Facing the same issue, has there been any update to this?

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As i’ve stated above, for single phase installations without a grid meter the limit AC input current can be used. This is functionally the same.

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Hi Mac, thank you for your response.

I have a 3 phase system.

In my view limiting the AC input and peak shaving are totally different things, even if that might be a workaround in your case.

Ive currently made a node red flow to implementent the peak shaving logic but it has downsides too.

Its weird that its not working as its a feature on every invertor Ive worked with and pretty basic functionality. I hope its fixed soon, cant recommend victron until its fixed.

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As Victron doesn’t seem to do anything about this nasty bug, i’ve made a node-red script that checks the amps on the 3 phases and changes the limit AC (for example three phase 6A limit means 1phase can use 17A when the others are around 0A, when the total sum of the three phase together exceed 18A it will switch the AC limit to 6A, else 18A). Dirty workaround and a shame that Victron doesn’t seem to support this very basic functionality but it is what it is I guess.

Without this you get nasty issues like the battery needing to jump in just because 1 phase is above 6A while the other two phases are 0A or negative.