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smartdiy asked

Why does turning off the charger in the Multiplus affect the mppt regulator?

Hi. I have a problem with the MPPT RS 450 charger. I have two identical strings connected to it, pointing in exactly the same direction. I want to charge the battery only from the DC charger, so I have the charger built into the Multiplus turned off via ESS Control Node.

From time to time one of the mppt trackers cuts production. When I turn on the AC charger for a couple of seconds, it starts producing at full power again even when the AC charger is turned off again. See in the video how it looks exactly.

https://youtu.be/50McF5JKw8A

There is also problem with mppt to even start after the night, when the MP charger is off. Look at the picture below.

1683010727099.png


My goal is to charge the battery only from dc mppt when there is a grid and export as much as I can to the grid from ac coupled inverter.


MPPT ControllersMultiPlus Quattro Inverter ChargerESSNode-RED
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1 Answer
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smartdiy answered ·

Anyone got any idea?

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