question

carterkemppel avatar image
carterkemppel asked

Smart bmv only showing voltage, current and power is 0

e4b48e95-d380-4360-92f1-888351c3c537.pngI am having difficulties getting the current and power to show, I am in able to get my batteries charged. Or show that they are. To my understanding I have everything wired correctly. Here is the diagram I sent off of and here it is wired up.

BMV Battery Monitor
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7 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

If it is wired ad shown in the diagram it should work.

Please check the wiring again, if everything is correct contact the seller from whom you bought the SmartShunt.

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carterkemppel avatar image carterkemppel commented ·
I attached another photo of my wiring if you would like to see as well
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carterkemppel avatar image
carterkemppel answered ·

Yes everything is wired just like that, I’ve checked it at least 3 times.

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carterkemppel avatar image
carterkemppel answered ·

0ebff250-bf7e-4b1a-be7e-594f9b3a5246.jpeg

Here’s my wiring


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carterkemppel avatar image
carterkemppel answered ·

e45e024a-9914-4291-989b-97f914ee8e68.pngthis is what it’s showing on the app


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carterkemppel avatar image
carterkemppel answered ·

If I disconnect the shunt will everything work?

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snoobler avatar image
snoobler answered ·

Please indicate where wires 1 and 2 go:


1639426657856.png


1639426657856.png (2.5 MiB)
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carterkemppel avatar image carterkemppel commented ·
1 goes to the batteries, and 2 goes to the chassis
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snoobler avatar image
snoobler answered ·

Is it set for the 500A/50mV shunt?

Are you using the aux input? If so, for what?

If everything appears to be in order, I would disconnect the load side of the shunt and conduct a zero current calibration.

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carterkemppel avatar image carterkemppel commented ·
It is set for 500A/50A

What is the aux for? On the shunt? And how do you perform a zero current calibration test


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seb71 avatar image seb71 carterkemppel commented ·
It's not a test. It's a calibration.

To perform a zero current calibration, disconnect the PV array, turn off all loads, then remove that small copper bar you have between the shunt "Load" bolt and the Lynx Distributor. The purpose of this is to have only the shunt connected to the battery.

Then you connect to the BMV with VictronConnect and in the Settings you have a button for zero current calibration (Note: never perform a BMV/SmartShunt zero current calibration when you have other things connected to the battery).

Without anything else connected to the battery, the BMV should show 0 current.

This might or might not fix your issue.


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Matthias Lange - DE avatar image Matthias Lange - DE ♦ seb71 commented ·

A bad zero current calibration would cause false readings not 0 all the time.
I don't think this will solve the problem.

@carterkemppel@gmail.com

Did you use the original RJ12 cable? Can you test another cable?

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seb71 avatar image seb71 Matthias Lange - DE ♦ commented ·
Yeah, probably. I just explained how to do zero current calibration.
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