DVCC - Maximum charge voltage (while feed-in)

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kent2ben asked Apr 9, '23

DVCC - Maximum charge voltage (while feed-in)

Hi

I use "Maximum charge voltage" to override the BMS and set a lower charge voltage.

It works fine but...When I turn on "Feed-in" it adds 0.2 volt to the max charge voltage?!

As you can see here I have set it to 27.4v in DVCC.

skærmbillede-2023-04-09-kl-191534.png

But in the MPTT "Networked operation" the "Charge voltage" is set to 27.6v

skærmbillede-2023-04-09-kl-191547.png

I see the same pattern no matter what voltage I set in DVCC. It is alway 0.2v above DVCC.
If I turn off feed-in the voltage is spot on?!

Anyone who know what I am doing wrong ?

DVCC

skærmbillede-2023-04-09-kl-191534.png (111.9 KiB)

skærmbillede-2023-04-09-kl-191547.png (105.1 KiB)

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Answer 1 · 2023-04-09T20:14:09Z

baxter answered · Apr 09, 2023 at 08:14 PM

There is nothing wrong. To provide feedin the charge Controller are allowed to work on a higher voltage, up to 0.4V above CVL. This is also described in the DVCC Manual

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kent2ben commented · Apr 10, 2023 at 08:02 AM

Tanks!

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