Orion XS + DC Energy Meter Issues

DIY
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1

I’m using a spare smart shunt in Energy Meter mode/alternator, to measure my non-isolated chargers. I added an Orion XS to the setup, and connected it to my Cerbo (for DVCC).

My issues is when the Orion is connected to Cerbo, it double reports the 700watts from the Orion, since Cerbo reports 700w and the energy meter shunt reports 700w. If i disconnect the Orion from Cerbo, its accurate, but i lose the DVCC which is why i went this route. Moving the OrionXS neg after the Energy Meter doesn’t make a difference.

I used a Klein clamp meter to confirm the outputs.

Ideally i want disable cerbo from reporting the 700w but keep dvcc.

Simple Energy
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2

Sorry, that wiring diagramm doesn’t make sense.

Too many busbars, two shunts in series ?

A smart-bms connected to the starter battery?

Either the diagramm is wrong or the setup .

3

I simplified the drawing.

The CL12 is using the resistor mod(victron told us how), so its just a bulk charger. The second shunt is setup as a DC Energy Meter. The setup worked for 2 years with out issues before adding the Orion XS.

The only issue is it double reports the Orion XS when i connect it to Cerbo for DVCC control.

IMG_3393
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4

Sorry, no idea

5

Except, maybe connect the xs minus to house battery minus ignoring the shunt.

Normally completely wrong, but with the xs the current is the ground line is almost zero, as the two sides of the xs work in opposite directions.

Probably won’t change anything, but its always worth a shot

6

The ground cables on non-isolated chargers are for failure and device operation.

Moving the ground has no effect since the current path is through the chassis ground to the alternator/starter battery.

Clamp on neg floats from 0.0a to 0.5a when pushing ~700w

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IMG_3397
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7

DC yes, AC / intermittent surely not.