Cebro GX / Multiplus II 2x120 switch input label from shore to generator with transfer switch input

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joeleeper asked Feb 28, '24

Cebro GX / Multiplus II 2x120 switch input label from shore to generator with transfer switch input

So I found a few threads back in 2022 and prior on this topic and it was not really possible back then that i can tell...

I have a Cerbo GX and Multiplus II 2x120 in and RV with stock RV auto transfer switch.

I am interested in the Cerbo GX being able to tell if the AC input is coming from shore power or generator power so that the diplay on my 70 Touch shows the correct input label, whether shore power or generator power. Generator Start/stop wants the AC in labeled Generator to know if the generator is running, but then it would count shore power as generator run time also?.

Is there a solid way for the Cerbo (or the Multiplus II) to know which input is being used?

Thanks, Joe

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derrick thomas commented · Feb 28 at 03:35 PM

Yes this is possible using Kevin Windrem's guimods. ExtTransferSwitch mod has been incorporated into the recent version of guimods. It requires adding a relay at the ATS to trigger a digital input on the cerbo. Individual ac input current limits can then also be set for generator and shore inputs.

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Answer 1 · 2024-02-28T01:36:15Z

Justin Cook answered · Feb 28 at 01:36 AM

Nope, the Cerbo gets its information from the MultiPlus and the MultiPlus only knows if it has incoming power, it doesn't know where it's coming from. You'd need a Quattro to be able to see that information, since a Quattro has 2 AC source inputs and can report that out to the Cerbo.

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