question

luka-renko avatar image
luka-renko asked

BlueSolar MPPT with DVCC control from BMS shortly switches to Float

I have BlueSolar MPPT 100/50 with Cerbo GX and REC-BMS on BMS-Can.
Have enabled DVCC so that BMS can control charging.
My MPPT normally jumps between Off (night) and Ext.control (while charging), but here it jumped to Float very shortly:

1708149141439.png

How is this possible if I use DVCC and external control?

I am concerned what kind of charge settings in uses when on "Float". Can I set these settings for LiFePo4?

MPPT ControllersDVCC
1708149141439.png (245.8 KiB)
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kevgermany avatar image kevgermany ♦♦ commented ·

Custom widgets in the advanced pages of VRM will show the values set by the BMS.

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1 Answer
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Alex Pescaru answered ·

I saw this kind of behavior, on my configuration, when the Cerbo is not being able to forward information between BMS to MPPT.

In those moments, the MPPT is switching to float for brief period of time, until the connection is resumed.

For example during Cerbo's restart or heavy CPU load.

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luka-renko avatar image luka-renko commented ·

Yes, Cerbo firmware upgrade happened then. Thanks for clarification.

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