I found only "GND Relay" when I have take a look inside the Multiplus 12/3000/120-16
Ist this relay programmable?
I have used the VE Software and add an assistant using "primary programmable relay"
In the software I get the information that the Aux1 Relay ist switched, but there is no effect on the GND Relay connector.
The "primary Relay" is in the upper right corner of the PCB.
You can also program the AC OUT 2 relay.
I mean this GND relay connector 
You can control the ac out/in relays not the ground relay which is enabled by grid code/ess.
The programmable relay assistant is required.
Alternatively the cerbo has relays which can be controlled.
Do you mean the Multipluss assistant can be programmed to command a Cerbo relay?
There is a Cerbo in our network.
What I want a relay to do is the following:
It should be closed when the Multiplus is charging the battery an open when it not charging.
But I do not know how to realize this.
