Hello,
since my pv inverters are > 30kVA i need to controll all my inverters using a Ziehl UFR1001E safety relais. How can i connect all my 6 Multiplus II 6k5 to the Ziehl the easiest way?
BR
you don’t have to connect the mp2 to the ziehl …… the ziehl has to be installed directly behind your grid connection point ….. the ziehl has to disconnect all of your inverters and has to be the first device after the grid meter.
i am aware of this, but do i need to disconnect the ac to the multiplus using 2 heavy coupling switching actors or can i use a dry contact from ziel to MP to switch them off without physically disconnecting the ac? If possible, do i need to connect this dry contact signal to every MP or is one sufficient
Are you wanting it to shut down the system? Or just disconnect the incoming primary relays to disconnect from grid (switch to inverting?)
What are you using the Ziehl? Grid compliance?
It is designed to drive an external contactor to add a second disconnect to the system.
Its not possible to use the internal relays of the MP2 for disconnecting via the ziel relays …… if you really want to shut down the whole system, that is possbile by using the dry contact of the ziel to open the remote on/off contact of the mp2. This will shut down the MP2.