MP2 ESS Three Phase Programmable Relay ACOut 2

Q&A and troubleshooting
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1

Good evening,
within VE.BUS System Config / VEConfig I created two assistants to either turn off or turn on ACOut2 depending on Aux 1 input.

Apparently, this is not synced:
If I close Aux 1 on the L1 MultiPlus 2, only ACOut2 of that MultiPlus is turning off (and not ACOut 2 of the L2 or L3 MultiPlus).

Is there an easy way to “syncronize” that behavior across all three MP? Or do I have to tweak around with the Cerbo input and Node-Red?

Many thanks and best,
Udo

2

You wire all the aux inputs as you have to L1 and program each inverter the same way.

3

Thanks for the quick reply.
So I connect all three + of Aux 1 together and all three - of Aux 1 together, right?

If so, is there no need for any additional gear like diodes, pull-ups, etc.?

4

No need for anything extra, it is just signal. Open or closed. And they aren’t carrying current.

I think you can daisy chain them.

5

Thanks. Let me try it out and I will come back with insights.

1 Like
6

So I wired all AUX 1 inputs together as suggested by @lxonline and it works flawlessly - all three ACOut 2 are working at the same time. If anybody is curious to know why I need it: I want to shut down a “stupid” inverter when the network operator sends a non-feed-in signal here in Austria.

Thanks a lot!

7

Nice application. Thanks for sharing the use case.