9 Technical Data
9.6 Technical Data of the
Communication Interface
Interface
Parameters
Ethernet
Cable
RJ45 connector: 2 pcs. RJ45
for Ethernet
Galvanic interface insulation
Direct protection against
contact
Short-circuit protection
Communication
Cable
Max. number of inverters
1)
(see Section 5.10 "Ethernet Connections", page 29)
9.7 Ethernet Connections
Figure 33: Pin assignment of the RJ45 plug for Ethernet
50
SHP75-10-STP60-10-IA-xx-19
Parameter details
Cable sheath diameter ( ⌀ ) 2 x 5 to 7 mm
Cable typ
Cable characteristic
impedance
Wire size
Cable shield termination
Double/reinforced
insulation
Network topology
Max. cable length between
inverters
Per SMA Inverter Manager 42
Pin
assignment
Ethernet
1. RX+
2. RX
3. TX+
4.
5.
6. TX-
7.
8.
SMA Solar Technology AG
Specifcation
STP cable (Shielded Twisted
Pair, CAT 5e or SFTP CAT 5e)
100 Ω to 120 Ω
0.14 to 0.25 mm² (depending
on the design of the RJ45 plug)
Via RJ45 plug
Yes, 500 Vrms
Yes
Yes
Star connection, ring
connection and daisy chain
100 m
Color standard
Cat. 5
Cat. 5
T-568A
T-568B
Green/white
Orange/white
Green
Orange
Orange/white
Green/white
Blue
Blue
Blue/white
Blue/white
Orange,
Green
Brown/white
Brown/white
Brown
Brown
1)
Installation Guide