question

roland1 avatar image
roland1 asked

firmware compatibility three phase system MultiGrid-II and MultiPlus-II

according the manual "VE.bus firmware version explained", it should be no problem, to match

https://www.victronenergy.nl/upload/documents/manual-VE.Bus-firmware-versions-explained-EN.pdf

2x MultiPlus-II: (software 2629481)

1x MultiGrid-II: (software 2625481)


together to a three phase system.

I use the latest VE-configuration tools, but it is not possible to do this.

An error messages in VE-Bus Quick configure tells:

Only Multis of same kind and with same firmware version are allowed!

Procedure will be restarted

Switch all devices off and press OK

What is the probleme?


Best regards


Roland

Multiplus-IIEasySolar All-in-One3 phase
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2 Answers
Volker avatar image
Volker answered ·

Hello - digging out this old thread.

Are those really devices really different types? The Info on the Victron MultiPlus-II site says

"Note: for a short period of time this product was called MultiGrid-II."

=> This suggests that this is just a labelling issue. In case those are really different types: what is the difference bethween the two?

=> if this is true, does it mean that 1-P MultiGrid-II systems would not be upgradeable to 3-Phase systems as the MultiGrid-II is no longer sold?

Thanks and kind regards - Volker


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yann avatar image yann commented ·

There was some hardware changes in multiplus II since the early models. Victron recommends to keep close serial numbers on devices when making 3 phases or // systems, to be sure the hardware version are identical.

So yes, today multiplus II hardware is a little different from multigrid models. So you may not be able to upgrade your system without replacing the device.

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Alexandra avatar image
Alexandra answered ·

@Roland1

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

The manual states:-

All units in one system must be the same type and firmware version, this includes same size, system voltage, and feature set.

The multigrid and the multiplus are different types.

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