Hello,
I wanted to know if there is a way to change the settings of all the Quattros in a solar installation. Let me explain. In Node-RED, I developed a power ramp system for starting and stopping a generator. Everything works well except for an installation with Quattros in parallel, as modifying the AC limit does not affect the Quattros in parallel. I tried listing the Quattros via Modbus, but I am not sure about my approach.
Thank you in advance for your help.
What specific setting are you adjusting?
The system (GX) setting for input current definitely works on a parallel set.
I change the AC limit, and it seems that it does not affect the Quattros in parallel and causes an imbalance on the phases.
You need to change the remote, grid current limit which is a GX setting and applies to both systems.
Don’t try to change the individual units.
You can use the vebus system control node and set the active input current limit.
This is also accessible via a custom node, just need to track the path down.
Have you tried the dynamic current limiter on the inverter? System will ramp itself with this enabled.
There is a difference between using the “ve.bus system” node and “custom input” node or is it the same thing?
I’ve not tried the dynamic current limiter. This produce a ramp system for the generator ? i’m curious about that. Can you explain me how i can do that or send me a link to learn this technic
No difference, does the same thing. The custom node just allows you to configure the many settings that weren’t included in each specific node directly as well as all the ones that were.
It is a setting on the inverter, have a look at the generator FAQ:
https://www.victronenergy.com/live/multiplus_faq
Plenty of posts on the subject that can be found via search.
ok i explain to you my system.
The system check the batteries SOC to start/stop generator if off-grid.
When batteries is low, the system close the relay, change AC limit , start generator, check tension on generator and increase AC limit on each ramp (40% → 60% → 80% optimal). The system do the reverse to stop generator.