Multiplus system stop charging 95.5%

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harmodio asked Jan 30, '20

Multiplus system stop charging 95.5%

We have two MultiPlus 24/3000/70-50 120V the units are configured as split-phase

Both multiplus are updated at 2712469 firmware.

The problem is that after a discharge the system start charging but it goes into float. It should go to bulk them to absorption finally to float.

What can be the problem?

fig.1 here is the charger settings.

fig.2 here we can see the change at the input when restored after the AC blackout.

Here is the problem... system is not raising to 100%. the recharge only reach 95.5%.

This situation is not normal, the system is working since two months until now.

We can monitor system through venus device. firmware 2.33 in configuration battery monitor is set to automatic.: 24/3000/70-50 120V on VE bus.

thanks for your help.

Multiplus-II

charger-setting.jpg (100.9 KiB)

ac-input-failure.png (16.1 KiB)

recharge-problem.jpg (70.5 KiB)

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Modifications Space

Node Red Space

Answer 1 · 2020-01-31T03:26:16Z

mrt answered · Jan 31, 2020 at 03:26 AM

Hi @Harmodio, Look at the options under the Battery Charge Curve drop-down. ..... Battery Charge Curve: The standard setting is ‘Four-stage adaptive with BatterySafe mode’. A detailed description is in the User manual Section 2

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harmodio commented · Feb 04, 2020 at 01:33 PM

We have the same problem, we have several systems, sometime I use fixed and the system always make bulk absorption and float stages, now this is the first time we have problem with multiplus not charging 100%.

I tested this system with adaptive, but the problem is the same..

No problem still is active.

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Answer 2 · 2020-01-31T06:24:59Z

Matthias Lange - DE answered · Jan 31, 2020 at 06:24 AM

Ist the battery capacity set to the correct value?

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harmodio commented · Feb 03, 2020 at 03:36 PM

Hi Lange! Yes we have 5 strings of 24V 100Ah. Vision bateries CG12-100.

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