Multiplus Ignore AC in split phase

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djpollock asked May 03 2020 at 11:40 PM

Multiplus Ignore AC in split phase

I have (2) Multiplus compact 2000 units in split-phase configuration and "switched as group" is unchecked. I can only get the Mulitplus on line 1 to work with "ignore AC" and successfully switch over to AC when the load is above the set limit. The other Multiplus will always ignore the AC and never connect even when the load is beyond the set limit. Both inverters have the exact same settings. What am I doing wrong?

split phase

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Answer 1 · 2020-05-04T06:51:34Z

Daniël Boekel (Victron Energy Staff) answered · May 04 2020 at 6:51 AM

Hi @djpollock

can you share the assistant summery of both inverters?

Answer 2 · 2020-05-05T02:54:11Z

djpollock answered · May 05 2020 at 2:54 AM

I did not use the assistant. I used the "dedicated ignore AC" option with the virtual switch. It is set to connect to AC at 1600w, disconnect at 1400w, and connect at 12v, disconnect at 13.2v.

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djpollock commented · May 05 2020 at 2:55 AM

Both inverters have the exact same settings. Except, only the inverter on Line 1 connects to AC under these conditions and disconnects accordingly. The inverter on Line 2 stays disconnected.

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Daniël Boekel (Victron Energy Staff) ♦♦ commented · May 05 2020 at 10:33 AM

Hi @djpollock

as the inverters don't know the load on the other inverter, it will only switch the inverter where the load state is met.

I'd advice to use an assistant on the inverters, use them to switch relay outputs, and wire the relais to an open input, use another assistant to ignore AC when that input is open / closed.

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djpollock Daniël Boekel (Victron Energy Staff) ♦♦ commented · May 05 2020 at 2:22 PM

I see. I understand the inverters don't know the load on the other inverter. But, the inverter on Line 2 doesn't reconnect when the load on Line 2 is above the setting; that's why I am confused. Is there a fix for this? I understand your work-around, but it seems like you shouldn't have to do that if the appropriate settings are selected for the virtual switch. Am I missing something?

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Daniël Boekel (Victron Energy Staff) ♦♦ djpollock commented · May 05 2020 at 8:22 PM

Hi @djpollock

I'm sorry that I can't give more detailed answers, because.... I don't know ;)

I can only give you the advice I gave earlier...

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djpollock Daniël Boekel (Victron Energy Staff) ♦♦ commented · May 05 2020 at 10:16 PM

Ok thank you. Is there anyone else on staff that would know how to make this work as intended?

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djpollock djpollock commented · May 06 2020 at 7:00 PM

Is there anyone else on staff who can help me?

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Daniël Boekel (Victron Energy Staff) ♦♦ djpollock commented · May 06 2020 at 10:12 PM

Hi @djpollock

My advice is still:

-use assistants

and then start building step-by-step, switch an output relay to see if your settings work, then extend to the next function.

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Multiplus Ignore AC in split phase

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