SmartSolar not working in my ESS setup

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ralphie asked Aug 31, '22

SmartSolar not working in my ESS setup

Hi,

I have an MP2 48/5000 with inverter on the input (EM24 is on the way...). Also 4x12 V batteries on SmartShunt setup. The ESS is a 'self-consumption' system.

I've added a SmartSolar 250/70 and connected 2 panels of 375 Wp each. I cannot get the SmartSolar to work. It say 'charging' and 'External control' but only 2 Watt is displayed:

The panels are 78 V and the batteries 51.5 V, so +5 V is met.

Can anyone confirm this not to work? DC feed-in is enabled and the solar power should also be used to power the loads.

Another thing is the SmartSolar is second hand, so maybe it is just broken. How to test that in an easy way?

Kind regards and thanks for any help.

Ralph.

ESS charger

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Answer 1 · 2022-08-31T20:16:26Z

Alexandra answered · Aug 31, 2022 at 08:16 PM

@Ralphie

Unplug it from the GX device. Reset it and uodate it if necessary.

Reprogram battery type and voltages.

Switch on connected PV and see what it does.

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Answer 2 · 2022-08-31T21:48:46Z

crash-override answered · Aug 31, 2022 at 09:48 PM

Check your charging voltages in your SmartShunt because I think it takes over control like a lithium BMS because your charger says external control.

You can check status of control in your GX device und er Settings - System Setup - System status.

With DVCC you can override Settings but not recommended, but you can test it there.

The solution Form @Ralphie works too, all settings in charger will be used instead of the given from your gx device.

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