Interface between simscape op-amp and simscape power systems

Hi there,

I am searching for the correct interface between the op-amp from simscape electrical elements and the surrounding from simscape power systems.

The interface blocks which I used below give an error of the kind: Initial conditions solve failed to converge.

Equations of one or more components may be dependent or inconsistent, ...

mentioning equations in the V-I interface block and the op-amp block.

Can you help me in this regard? Are the interface blocks OK or do I need other interfaces?

Thanks very much! -- Heinz