question

wirehead avatar image
wirehead asked

Bug: Multiplus II State shows External Control insted of Bulk/Absorbtion

Hi,


Since i updated two installations from 2.85 to 2.90-10 they are showing in the remote console and in VRM "external control" as state of the Multiplus II insted of Bulk or Absorbtion.

1653660118777.pngInstallation Updated on 22.05.22

1653660294696.pngInstallation 2 Updated on 27.05.22

1653660399058.pngCan someone confirm the behavior or provide a solution?

Installation:

- Cebo GX; 3x Multiplus 2 48/3000; Pylontech US2000C; some PV inverter, EM24 powermeter

Multiplus-IIESSVE.Bus
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1653660399058.png (28.2 KiB)
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3 Answers
Stefanie (Victron Energy Staff) avatar image
Stefanie (Victron Energy Staff) answered ·

Hi @wirehead

This is not a bug. It is probably rather a matter of a correction because your Multis are BMS controlled (keyword is CVL, CCL and DCL) and lithiums don't know about bulk, absorption and float.

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robertodbh avatar image
robertodbh answered ·

v2.90 – September 12th 2022:

  • Inverter/chargers: show state as "Ext. control"; instead of Bulk or Absorption, when controlled by a BMS/DVCC. When controlled by a BMS the inverter/charger would never show float, which caused questions. Now it just shows externally controlled, simpler, and more accurate: there is no bulk -> absorption -> float charge algorithm when controlled by BMS.
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useeling avatar image
useeling answered ·

Might be interesting for you too, but I just noticed after installing the large-OS and implicitly upgrading to 2.93, the old "bulk" etc behaviour for the State returned (and the Ext. Control is gone).


The release notes for 2.93 are stating:

• Restore Modbus-TCP register 31, VE.Bus State. Per a recent version, that register returned "Ext. control" which broke customer implementations. Now the register will return the usual status (Bulk, Absorption, Float, etc) again, when the inverter/charger is in fact externally controlled by a smart battery.



4 comments
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carel-burger avatar image carel-burger commented ·
Upgrading to 2.93 fix this issue for me.
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luupus avatar image luupus carel-burger commented ·

This is interesting, as I upgraded to 2.93, large image, and in VRM it still states:

external controlvrm-external-control.pngvictron-version.png

Any idea?

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