Shutdown AC2 when there is load on phase

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question

mattvictron2022 asked Jun 28, '24

I have 3x Multiplus 5000 with Cerbo GX.

On phase3 i have connected boiler 2,4kW on AC2 which starts when SOC is above 97%.

I have connected also Whirlpool 2,4kW on phase3 but I want to disable boiler when Whirlpool is running to avoid taking energy from grid.

Is there any functionality, which can stop AC2 (boiler) when there is load more then 500W on the phase3 ?

Multiplus-II cerbo gx

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Answer 1 · 2024-06-29T07:19:00Z

sharpener answered · Jun 29 at 07:19 AM

You can use the Relay Assistant to turn the AC2-Out relay on and off based on AC power consumption.

Best to have some hysteresis to avoid it chattering, so have the off threshold significantly higher than the on threshold.

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Answer 2 · 2024-07-01T04:16:12Z

mattvictron2022 answered · Jul 01 at 04:16 AM

Can you give me please screenshot how it should be setup?

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Answer 3 · 2024-07-02T07:00:49Z

sharpener answered · Jul 02 at 07:00 AM

Then set Relay On, AC Load, skip Extra Drive Option, set power level.

Repeat with a second Assistant for Relay Off.

1719903369524.png (56.3 KiB)

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