Multi RS 48/6000/100
Grid limit set to 40A, but when charging batteries by setting gridsetpoint to 12000 the grid is limited to 25A. As soon as the minimum SOC is higher than the current SOC then the grid is increased to the limit of 40A.
I can’t find a setting that restricts the 25A grid, somebody has an idea?
DESS is disabled.
Thanks, Marc
Hi Marc,
You’ve made me curios since I have the MultiRS running at my home and never actually needed to increase the “Current limit at AC input”. The reason is that the installation is limited to ~25A with a fuse and never wanted to go above that current.
However, I did a little test now increasing that limit to 50A and started a few bunch of consumers summing up to ~7KW (30A). The result is actually what I expected and the entire energy is “forwarded” from the AC input towards the house. The battery current is kept at 0A.
As soon as I reduced the AC input limit (to 25A), the battery current starts to increase contributing with the power difference.
I’m using the ESS mode “Optimized without battery life” by the way. No PV power at the moment of testing.
I hope you can get it working.
Later edit:
I also tried for the condition you mentioned (minimum SOC > SOC) and it behaves the same:
Regards,
Mihai
Thanks for the research!
In your case, if the AC input is fused at 25A, why don’t you set set the "Current limit at AC input"at 25A? This would prevent the fuse from tripping? Didn’t the fuse of 25A trip while testing the consumers at 30A?
Regards, Marc
This is how I use it, with 25A set point limit. I only increased that for this test and fortunately the breaker did not trip 
For clarification, some pictures/screenshots underneath:
“A” in picture: this is the AC-IN, limited at 40A in the connect app (settings - general - current limit at AC input)
“B” in picture: the batteries connected to the Multi-RS, metered by a Victon SmartShunt
"C"in picture: this is the AC-OUT-1 where the consumers are connected to. Special is the SunSynk inverter with batteries.
In this example the SunSynk is discharging, and the Multi RS is discharging, both instructed at max power. But the Multi RS is reducing its discharge power to the level that the AC-IN is 21A. If the power of the SunSynk is reduced, the power of the Multi-RS is increased with the same amount, but never more than the AC-IN 25A.
In the second screenshot the SunSynk is charging, and the Multi RS is charging, both instructed at max power. But the Multi RS is reducing its charge power to the level that the AC-IN is 25A. Again, if the power of the SunSynk is reduced, the power of the Multi-RS is increased with the same amount, but never more than the AC-IN 25A.
I expect that when the transferswitch is in, and that the AC-IN would be capped at 40A instead of 25A.
Additional edit: if Victron DESS is used to control the Multi-RS, the Multi-RS is charging to the AC-IN limit of 40A, but discharging is limited to 21A. In both situations the SunSynk is doing the same action as the Multi-RS.
Hopefully this clarifies the situation and somebody has an idea what causes this.
Thanks in advance, Marc
Which Grid-Code are you using?
I’m not using any… I’m not feeding into the grid because in my country there’s a lot of struggle to get anything back for the energy you send back.
Version v1.20 of firmware is installed, according to release notes the issue i am experiencing could be solved in v1.18.
Would The mentioned fix still be present? Maybe @mpvader knows this?
Unless there was a regression, previous changes should all be in newer code.
No solution yet, Victron development is racking their brains on the specs probably. Paperware is easier than hardware and software.
