SMA SSM16-11 - Manual (Page 36)

6 Electrical Connection SMA Solar Technology AG
36 SSM16-24-IA-IEN105120 Installation Guide
6. Ground the grounding cable in the vicinity of the Sunny String-Monitor, for example, with a
ground rod.
6.5 Connecting the Data Cable
6.5.1 Selecting the Data Cable
The data cable of the RS485 communication and the power supply connects the Sunny String-
Monitor to the Sunny Central.
• Use a shared cable of type Li2YCYv (TP) 4 x 2 x 0.5 mm for the data cable of the RS485
communication and the +55 V
DC
voltage supply.
6.5.2 Connecting the Data Cable Shield Contact
1. Remove the filler-plugs from the cable gland.
2. Guide the data cables through the cable gland into the enclosure interior.
3. Remove the data cable cover.
4. Loosen the thumbscrew on the shield clamp and
pull the cable through. Lay the cable shield on the
shield rails as you do so.
5. Only tighten the shield clamps hand-tight. This prevents any damage to the insulation.
6. Tighten the cable gland.
/05*$&
Damage to the electronics due to wrong cable installation.
In order for the Sunny String-Monitor and Sunny Central to work properly, EMC guidelines must be
observed.
• Lay the AC/DC main cable and the data cable separately and at a distance greater than
400 mm from one another.
• Lay the data cable shield in the Sunny Central and in the Sunny String-Monitor.
Maximum shield diameter 8 mm