Hi,
Using a multi RS is there a better way switching the Relais when AC IC Power fails than using this NodeRed:
I Need this to switch an Solaredge Inverter to Alternate Power Mode when AC IN is not powered and switching to island mode.
BR
Power that relay from AC-In… 
Or you are talking about the Multi RS relay?
I need a dry contact switched when AC in is OFF. So yes i could use a 230V Relais connceting to AC IN but i wanted to use software and the internal relais when its fast enough and stable.
Replicate what Node-Red is doing, but in a script.
Monitor through a script the AC-IN voltage on dbus (/Ac/In/1/L1/V) and, when it’s below a certain level / value, use relay’s dbus path (/Relay/0/State) to switch the relay to your desired state.
Ok,
i found dbus_modbustcp/attributes.csv at master · victronenergy/dbus_modbustcp · GitHub
Would be /Ac/ActiveIn/ActiveInput perhaps the better choice? (0=AC Input 1;1=AC Input 2;240=Disconnected) So when not 0 grid is gone.
By script you mean a python script? Cause it has less overhead and therefore is more durable and faster?
@victron An assistant would be nice
Assistant in Multi RS?
Even a bash script, which is even quicker, as it doesn’t involve invoking the python interpreter.
That is a path specific to Cerbo (system).
I’ve recommended the /Ac/In/1/L1/V as it’s a path specific to Multi RS, just like /Relay/0/State.
So you don’t have to open two roots. You just use Multi RS base root.
This will imply using dbus or dbus-send utilities.
Or alternatively, even quicker and less resource consuming, you can use vreg utility to access directly the Multi RS registers for voltage and relay control.
But, as long as you have the Node-Red installed, why bother?
If you don’t want to use Node-Red at all, well, this is another matter and the above stand.
1 Like
Why not ?
I thought no ve configure, no assistants
I thought multi=multi ??
No, multi RS is very different. Its the next HF based Generation.
No VE.BUS, NO big transformer, NO ve.configure.
One step back…
from what i have seen absolutely not.
No assistants ?
They arent needed anymore. for example ESS is implemented in the core. Setup with bluetooth and smartphone is just straightforward.
at the moment i few things may be messing but victron is improving by time…
Its not KISS anymore, scripting and node-red is nothing for the basic customers, if i need to pay a specialist for every modification its worthless.
Just think that it is for the average (younger) people easier to create a mini nodered flow than handling victron assistants they never heard before…
Yeah, but the people with the money are all my age.
I agree the assistants are not the best, but for me ( as professional programmer) the hmi could have been developed to an even simpler solution.
If i constructed something like victron I’d be out of work.
Hi @Ludo
Talking from the perspective of a Multi RS owner…
I have the feeling that the things are a step by step evolution from a technology that started sometimes in the previous century.
The design of the PCB for the oldest inverters (that many are still out there), components used and so on, makes me remember of the old electronics from the 80’s or 90’s.
And I believe that Victron, being a family company, probably didn’t have the luxury (the funds and the manpower) to side research and develop something new from scratch and had many times to make adaption on the move on the existing hardware.
Of course, there were new things, but on small steps.
At least for me, the general feeling is, and I mean no offense here, that the hardware design is sometimes let down by the software design.
Maybe some day I would like to meet the brilliant hardware designers of some of the Victron devices.
But in the same time, boy, one can believe that the software is designed by some restless and rashly highschool hobbyists.
Again, no offense, but just take a look how many times the word “fix” is in the current Venus OS changelog… Over 500 times !! And since I’ve bough my system almost 70 times !
I, personally, settled on a couple of firmware versions that work for me and made myself any modification.
OK, rant over… I wonder how soon my post will be moderated because I had the audacity to speak in such words about Victron…