SMA SI 3.0-11 Installation - Manual (Page 38)

7 Electrical Connection SMA Solar Technology AG
38 SI30M-44M-60H-80H-IA-en-30 Installation Manual
Plug assignment:
Figure 12: RJ45 plug assignment
Figure 13: Design of the SI-COMSMA.BGx
Cable requirements:
☐ Classification: CAT5e
☐ Maximum cable length: 1,200 m
Procedure:
1. If an SI-COMSMA.BGx is not installed in the Sunny Island, install an SI-COMSMA.BGx in the Sunny Island
(see SI-COMSMA-NR mounting instructions):
• In single systems, install an SI-COMSMA.BGx in the Sunny Island.
• In a single-cluster system, install an SI-COMSMA.BGx in the master.
• In a multicluster system, install an SI-COMSMA.BGx in each master.
2. Connect the white data cable with open wires to the communication device (see installation manual of the
communication device).
Contact pin Signal Color coding of the insulated conductors
2 GND Orange with white stripes
3 Data+ (A) White with green stripes
6 Data − (B) Green with white stripes
Position Designation
A Mounting hole
B Type label
C ComSmaIn pin connector
D ComSmaOut pin connector