I have got my multiplus up and running, the battery 16kWh with JK BMS connected, all seems to be working well. Obnly when I drop the mains switch, the Multiplus switches of and I found in the VE config: RoCoF too high.
Connected cables are very short. I cannot change the gridcode, the password fr changing it I do not know. I assume it has something to do with the Hz/s related to the grid code selected Europe EN50549-1 2019?
Any suggestions?
New kid Arjan, thanks in advance for your help and time
That is the right european code, i have my system on german grid code because at the time there was no NL gridcode avaliable, so you could try that
these are my ve config settings:
(Setup in my case for pylontech batterys!)
General:
Input current limit: 18A
Check the âEnable battery monitorâ function
Set the battery capacity to the total capacity of the battery: 400Ah
The other parameters (âState of charge when bulk finishedâ and âCharge efficiencyâ) can be left to their default setting: They are ignored for a Pylontech installation.
Grid tab:
Gridcode: VDE ARN 4105 int NS
Whether or not âWeak LOMâ is used > plus LOM B
Hi LX, yes my Mutlitiplus has a built in GX. With later attempts I did not get RoCoF failure.
What i found strange is that all AC loads are connected to AC out 1 (checked 10 times), on the remote console it is showing the load as non essential while nothing is connected to the non essential out.
Mistake, I looked at the wrong place. In the VEconfig under GRID, there is NS protection log showing: twice under voltage (last two times) and once RoCoF too high. Any tips advise? Arjan
I have all my AC loads connected to AC out 1 (nothing on 2), if I trip the main switch all gets dark, but no alarms. I am not sure if (and if so how) the UPS functionality need to be acitvated.
The remote console shows 194W on the non essential and 5 on the essential group.
It should automatically switch to inverting when the power is cut.
This however if everything else is ok, will only happen if the physical switch is switched to the on position. (It is a three position switch and often a user will have it in the wrong position)
If the switch is on and it doesnât switch to inverting, then the battery is not providing power to the inverter when it switches over. So either a fuse has blown or something else between the battery and inverter is not right.
Is everything on your system uo to date in firmware?
How is it programmed?
Do you havea grid meter?
This is the reason if the system thinks or is set to look for or support loads on both sides of the inverter.
Essential loads are on the output of the inverter.
Non essential before.
I donât understand, I made following configuration below. The bypass isn fed by AC out 1 and in postion II, fr testing I flip the Mains (hoofdschakelaar)
LX, you where right! The by pass switch was labelled wrong. I made the UPS test while it was in bypass, position I. What caused the RoCoF is unclear to me.
However, with the switch in postion II, cutting the mains give the slightest flicker, POWER stays on.
