14
4.4.1 Connection information
The large display panel is connected to the RS-485 terminal of the Suntrol on
termi-
nals 9 and 10
, in series with the inverters. A shielded cable must be used to connect
to the Suntrol. The size of the cable is not important.
Data+
of the large display panel (terminal 9) is connected to RS-485 pin 1 of the Suntrol.
Data-
of the large display panel (terminal 10) is connected to RS-485 pin 4 of the Suntrol.
With the STL800, RS-485 A or B can be used (except Fronius, see above).
The shield is connected only to 0V (terminal 2) of the large display panel and remains
open on the Suntrol side.
4.4.2 Connection diagram
Power
supply
Shield
Large display panel
RS-485 with
the inverters
Suntrol
Pin
1 3 1 4 1
6
1
2
3
