I intend to use my MP2 as pure inverter with remotely controlled setpoint. By now I don’t care anymore if setpoint control via Modbus TCP or MQTT or if necessary even dbus (most dbus paths are avaiable with MQTT anyway). How to accomplish, what needs to be configured? I disabled the charger funct…

I set this in the console: [grafik] now it looks as if I can command a power output by [grafik] in MQTT. Modbus code does currently not work (I think because of negative value) The same state I had yesterday evening, don’t ask me how it disappeared over night… now I would like to set to feedin…

unfortunately I can not check if my surplus (MPP op mode) based control still works since the sun has gone now… ok. now same situation now as ~20 hours ago, but at least not back behind like 12 hours ago :wink:

oh, I just realized that today is Friday, 13th… the control loop performance of the MP2 is horrible. setpoint constantly -131 - this ist what MP2 puts out (according to it’s own sensor, and according to the the grid meter it seems to be true) [grafik] ok, that’s enough for Friday 13th. why haven’…

This is the over-all closed loop zero control (setpoint -10 Watts) performance using the Lumentree: [grafik] measured by the gauged(!) grid meter including the jitter of domestic consumption… how should I ever achieve ‘zero’ feedin with an inverter scattering +30/-50 Watts at a setpoint of 130???…

does anybody know what this is? [grafik] may this help?

Good morning everybody! during the night I solved the output jitter problem by setting the MP2 output ‘stepwise’, so with small loads it does not interfere with my zero control. But now the sun is back and the next problem comes back, too: As soon as I switch on the MP2, the ESS Assi sets the targ…

oh men, I could cry! I simply want to control the power output of an inverter. To do that I have to connect the inverter to the system and activate an oversophisticated ‘assistant’ to make the most basic functionality of an inverter available. But this ‘assistant’ takes contol over my system and des…

After what I read here you are much better informed in this matter than I am, but I control and monitor the installation with Node-Red. It can’t get any easier than that, I think?

hi @Diederik , thank you! I think Node-Red (Venus large) is no solution since there are proprietary components with proprietary communication (no adapter) in the system required in time ‘critical’ closed-loop control. I did not try with Node-Red, but with Home Assistant (java script) it was dead end…

How to use MultiPlus 2 as pure inverter, setpoint remotely controlled? (2nd try)

DIY

Philippoo 13 September 2024 22:18 25

does not help. but reducing the frequency of refreshing setpoint seem to help: 3s → 10s:

38033-grafik

38034-grafik

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How to use MultiPlus 2 as pure inverter, setpoint remotely controlled? (2nd try)

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