SMA Solar Technology AG
Communication connector
Technical Description
SSMUS-TUS094511
35
6.3 Communication Connector Sunny Central
6.3.1 Connecting the Data Cable in the Sunny Central
The data cable is attached with a plug to the 485 RJ45
clamp in the Sunny Central.
1. Open the Sunny Central as described in the Sunny
Central installation guide.
2. Prepare the data cable as described in section
6.1 "Preparing the Data Cable" (page 30).
Data+, Data– and GND must be connected to the
same wire as the last Sunny Central String-Montior
in the communication bus.
3. Draw the data cable into the Sunny Central as
described in the Sunny Central installation guide.
4. Plug the plug to the 485 RJ45 clamp.
☑ The data cables are attached in the Sunny Central.
NOTICE
Disregarding the proper order when connecting the communication bus.
Damage to the communication bus.
• Only connect the data cable in the Sunny Central after all Sunny Central String-
Monitors are connected to the communication bus (see section 6.2 "Communication
Connector Sunny Central String-Monitor" (page 32)).
SUNNY CENTRAL
485HUB
SUNNY CENTRAL
STRING MONITOR CONTROLLER
SUNNY WEBBOX
U
SB
C
O
M
N
ET
C
O
M
SM
A
CO
M
M
EM
O
RY
RE
PO
RT
SY
ST
EM
PO
W
ER
SUNNY CENTRAL
485HUB
SUNNY CENTRAL
485HUB
SUNNY CENTRAL
STRING MONITOR CONTROLLER
SUNNY WEBBOX
U
SB
C
O
M
N
ET
C
O
M
SM
A
CO
M
M
EM
O
RY
RE
PO
RT
SY
ST
EM
PO
W
ER
SUNNY CENTRAL
485HUB
