Electrical Connection
SMA America, LLC
60
SI5048U-TUS121440
Technical Description
6.5 Interface for External Communication
You can connect communication devices from SMA Solar Technology (e.g., Sunny Boy Control,
Sunny WebBox) or a PC with the appropriate software to a communication interface. A detailed
wiring diagram can be found in the communication device manual, of the software or on the Internet
at www.SMA-America.com.
You can incorporate an RS485 communication interface into the Sunny Island.
6.5.1 Connection of the Interface for External Communication
Connect the Interface for External Communication
1. Remove the right plug from the cable insert.
Powerline Modem (NLM)
Communication via Powerline/Powerline modem (NLM) is not possible in off-grid power
systems.
Communication in a cluster
Fitting of a communication interface in a cluster is only necessary on the master.
NOTICE
Destruction of the communication interface through electrostatic discharge.
Internal components of the Sunny Island can be irreparably damaged by static discharge.
• Ground yourself before touching components.
