question

Nope. A parallel set is logically one inverter and reports as such.

The master MP2 creates the PWM for the slave MP2. The slave is just an extension of the DC to AC circuitry.
There will be discrepancies in internal resistance between the MP2's. In order to cope with this inbalance the following must be true: the AC-OUT as wel as the AC-IN should not be connected with the thickest cable ever seen from distribution point. Compared to the MP2 internal resistance these wires must have a "significant" resistance compared to the MP2, and this significant resistance must be the same as much as possible (the cables must be equal length up to the join bar). So on the AC side from the distribution point to the MP2 needs to be a "thin" cable in order to have enough resistance.

These are just the default suggestions. I don't know what exactly is considered the right thickness..

Because your jet starts when you are trying to do topup in the morning I assume the inbalance is on AC-IN and the battery...

I did not really answer your question though. So excuse me for that.
Also having a GX inside the same box might add enough to the heat to go superturbo. I assume the GX part adds about 5..10W. The SoC itself is very energy friendly, but it also needs to feed drivers etc. .

This is what clampmeters are for, vital for parallel setups. Any imbalance will be shown.

Mucking around with swapping feeds etc isn't just time consuming, it is a good way to break something expensive.

@graham Willsher

I haven't looked so I don't know for sure but I read somewhere that under device list, you see the parameters of one inverter? If that is the case, you can derive the parameters of the the other inverter by subtracting these from those shown on the main VRM page.

F.

Re Fans. Don't fit the retrokit to an already modified system.

At full taps, they will be loud, mine are the same at full charge.

The modifications only reduced noise at lower Fan RPM, it made zero difference to the full speed noise.

Also.

Recently, some new systems would make a lot more noise again at lower RPM. I experienced this after replacing one of the pair and immediately assumed the system was unbalanced.

My meter showed it wasn't, so I just lived with it, until 5.08 firmware was released with an improvement for this behaviour.

They are now more uniform again, but one is a bit louder.

With changing hardware revisions that is bound to occur.

And definitely make the newest one master, if there is a big difference in manufacture date, that will never help either, more so if one has "lived" more than the other.

Thanks all for your replies.

I will be speaking with my installer re the best way to move forward with this. Having the never inveter to be the Master will be one thing to do and using clampmeters to figure out (and hopefully fix) any imbalance on the inverters.

The last resort (if all else fails) would be to replace the 2 inverters and just install a single large multiplus II 48/10000 which would be the capacity of my exiting 2 parallel multiplus's. I would also need to purchase a seperate GX device so that I can program it as currently. Not the ideal solution, but if I can't get this resolved it might have to be an option.

Thanks,

Graham.

In answer to my own original question re getting data from the individual inverters, @nickdb helped me out with this by sharing a MQTT nodered flow with me, where all of the data held in the inverters is available.

With a little investigation (getting the correct settings for my system) I was able to get all the necessary data from the inverters, and can now see that my system is not balanced.

So now onto the balancing of the system. :)

Graham.