SMA Sunny Boy Control Light - Manual (Page 72)

Sunny Boy Control Light Chapter 7: Appendix
SUNBCL-11:NE
- 72 -
SMA Regelsysteme GmbH
the following you will find an overview on how to manage problems you might have
with Powerline Communication.
7.2.1 Transmission Errors
Reasons for communication interference can be:
•
Strong damping of the transmission signal
−
The transmission line is too long
−
The cabling layout is not suitable
•
Damping by other connected electrical devices
- e.g. capacitors in fluorescent lamps
•
Insufficient phase coupling
−
The Sunny Boy Control Light and the Sunny Boy Inverters are
connected to different phases
−
Interference by other communication signals
−
Babyphone etc. in neighboring households
•
Failures due to different signals
−
Babyphone
−
Interphone
Each of the mentioned failure sources has effect on the quality of the transmission
line. However, this must not necessarily prevent Powerline Communication. In one
household mains the data transmission is possible without any problem via several
phases with 100 m total transmission distance, and in another installation there is a
strong interference on one line with 30 m on the same phase.