User Manual

25
WARNING! An electrical shock can be fatal. Danger from DC
voltage from solar modules.
- Make sure that the input and output sides in front of the
device are not charged before connecting anything.
- Any and all connections should only be carried out by quali-
fied electricians.
- Follow the safety rules in these operating instructions.
Safety
Connecting Data Communication Cables to the
Fronius String Control 250/25
There are two options for connecting the Fronius String Control 250/25 to
Solar Net:
- Via connection-ready data communication cables with RJ 45 plugs
Recommended cable size: CAT 5
- Via unterminated multi-core data communication cables
Max. cable cross section 2.5 mm²
Connection
Options
(1) Terminals for unterminated
multi-core data communication
cables
(2) RJ 45 connections
Additional
Insulation for
Data Commu-
nication Ca-
bles
Important! A silicone tube is included with the Fronius String Control 250/
25 for additional data communication cable insulation.
When laying the data communication cables on the inside of the Fronius
(1)
(2)
String Control 250/25, the data communication cables must be fed
through the silicone tube.