question

marekp avatar image
marekp asked

Strange VRM look with external power meter

I have a problem with the way VRM is displaying dashboard.

When I select "external grid power meter" (EM24) dashboard looks as follows.

screen-shot-2021-06-04-at-104625-pm.png

When I select Inverter/Charger as a grid power meter dashboard look as follows.

screen-shot-2021-06-04-at-104448-pm.png

Someone told me that it is correct behavior (the layout not the numbers), but my system looks like below:

setup.jpg

There is no load between grid_power_meter and MP-II so why I have power going to AC-loads?

All my loads are on the Essential AC loads.

Any suggestions?


VRM
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2 Answers
markus avatar image
markus answered ·

Double check your EM24 wiring. BR

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marekp avatar image marekp commented ·

Hi Markus,

Can you explain why this numbers are more or less ok?

Here EM24 is wired the same and is used as a grid power meter.

screen-shot-2021-06-04-at-20512-pm.png

Here only 16W are "missing in action".

3633 - 390 - 3051 - (195*0.9) = 16


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marekp avatar image
marekp answered ·

Just to update.

There was a simple reason for the wrong numbers.

Problem was fixed by swapping phases L1 and L3 on the LM24 power meter.

Below the numbers after fixing this problem.

screen-shot-2021-06-05-at-92850-pm.png


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