The Interface Module is an extension module to the PV Main Controller Module. It represents the interface between the
PV Main Controller Module and Sunny Tripower string inverters in decentralised PV plants. Due to the different
communication concept in Sunny Central inverters, the Interface Module is not required if this inverter type is installed.
The Interface Module includes the control unit for up to 75 Sunny Tripower inverters. It receives the setpoints for the
defined inverter power output from the PV Main Controller Module and sets the power adjustments accordingly. For
monitoring purposes, the Interface Module sends the inverter status and the relevant performance data to the PV Main
Controller Module. The Interface Module, however, implements its own data-logging functions, including the registration
of the SMA PV inverters in Sunny Portal.