question

Trevor Bird avatar image
Trevor Bird asked

VRM software better if shows separate input current limits

If a Cerbo GX is connected to a Quattro, and both inputs on the Quattro have input current limits, the VRM shows the addition of both current limits which is misleading. For instance, if the generator input to the Quattro is 40 Amps and the shore power input current limit is 13 Amps, the VRM shows input current limit as 53 Amps.

This is not a big deal but it is a software anomoly which can cause some confusion. Better to have both input current limits listed separately.

VRM
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3 Answers
mvader (Victron Energy) avatar image
mvader (Victron Energy) answered ·

Indeed. We’ll look into that. Thank you!

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harold avatar image
harold answered ·

On mine I see the current limit of the active AC IN

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Trevor Bird avatar image
Trevor Bird answered ·

Apologies and thank you to Harold for making his comment which made me think more carefully. We have an unusual configuration.

1. Two Quattros working independently ( not parallel or split phase)

2. One Cerbo GX with Touch 50.

3. One Quattro connected to Cerbo via VE. Bus. The other connected through Mk3 interface from Quattro BE.Bus to Cerbo USB.

One Quattro has shore power current limit of 13 Amps. The other Quattro has current limit of 40 Amps ( coincidently the same as the generator input current limit on the first Quattro - that’s why I was tricked). I think the Cerbo is adding both shore power current limits to give a total. Each Quattro is fed with a different phase of shore power so adding them doesn’t make sense but our use case is pretty specialised so we accept the software cannot cover every single possibility. It would be better if the current limits could be shown separately but maybe our use case is quite rare.

Thanks to Matthijs for the response but I thought I should correct my previous explanatory error rather than waste programmers time.

Trevor

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mvader (Victron Energy) avatar image mvader (Victron Energy) ♦♦ commented ·
Ok thank you for the update, appreciated
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