System Monitoring And Diagnosis; Data Transmission Via Powerline - SMA Sunny Boy SWR 1800U Technical Description

Sunny Boy 1800U Technical Description

3 System Monitoring and Diagnosis

The monitoring and control of PV-systems is essential for the optimal energy yield,
the safety of your PV-system and the long life of your PV-components.
The Sunny Boy family inverters have various options for PV-system control and
monitoring. This chapter will try to cover all different possibilities for the data trans-
mission, the cabling circuits and how to eliminate and suppress any transmission fail-
ures.

3.1 Data Transmission via Powerline

Signal transmission between the Sunny Boy and the Sunny Boy Control or the PC is
done with the grid connection via powerline. This requires a minimum of installation
(see below). The Sunny Boy must be equipped with a powerline modem for data
transmission. The PC must be equipped with the socket modem (SWR-COM). This is
already integrated in the Sunny Boy Control, the specific controller for PV-systems.
The PC or the Sunny Boy Control can be positioned anywhere within the in-house
network as they acquire data directly from the AC circuit.
For trouble-free operation the Sunny Boys and the PC socket modem or the Sunny
Boy Control must be connected to the same phase of the in-house network. If the
communicating partners are connected to different phases the communication must
be established with a so-called phase coupling device. The phase coupling device is
available from SMA and must be installed by qualified personnel. It will make com-
munication within the entire in-house network possible.
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SB1800U-11:EE
SMA Regelsysteme GmbH