question

jgy67 avatar image
jgy67 asked

Two different models of Multiplus in parallell

Is there a way to Connect two different models of Multiplus in parallell in the same system?
My system contains of Venus GX, two MPPT charge controllers .
its all BMS controlled (REC Q-bms 16s)

multiplus in parallel
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2 Answers
Guy Stewart (Victron Community Manager) avatar image
Guy Stewart (Victron Community Manager) answered ·

Hi @Jgy67

No, this is not possible for 2 different models to synchronise their AC output waveforms in sync.

Limitations are explained a bit here:

https://www.victronenergy.com/live/ve.bus:manual_parallel_and_three_phase_systems

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jgy67 avatar image
jgy67 answered ·

Hi , and thanks for the reply.

If you dont require the wave forms to sync, but simply regard them as two separate 230V courses electrically separate on the the AC side. (dc side would be common) Would they co exist properly , with regards to VensusGX and the DVCC setup.
Would these to units be able to charge the batteries simultaneously and in a proper way?

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That is closer to being possible - but still not supported.

The VE.Bus connection is limited to a single inverter set (accomodating multiple units synced in parallel or 3 phase), but will not accept unsynchronised units.

It is possible to connect 1 inverter via the VE.Bus, and then another inverter via the USB port of the GX device with an MK3-USB adapter.

But that other USB connected inverter is quite limited to only reporting its data for viewing on the GX and VRM, and will not receive DVCC instructions.

So no, that is not supported either in the way you describe;

https://www.victronenergy.com/media/pg/Cerbo_GX/en/installation.html#UUID-af034207-a194-e323-86e1-8b7dae646576


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jgy67 avatar image jgy67 commented ·

Thanks for the quick reply:-)

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