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5 Electrical Connection
5.7 Connecting the Data Cable
5.7.1 Data Cable Properties
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 RS 485
communication and the +55 V
• Observe the component identification sign (CIS) inside the device.
5.7.2 Connect the Data Cable Shield Contact
1. Remove the filler-plugs from the cable glands.
2. Guide the data cables through the cable glands into the enclosure interior.
3. Remove the data cable cover.
4. Fit the cable shield on the shield rails. The shield rails are underneath the connection terminals.
5. Set down the shield clamps until they click into place,
and tighten by hand.
6. Tighten the cable glands.
5.7.3 Connecting the Data Cable in the Sunny String-Monitor
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 DC main cable and the data cable separately and at a distance greater than 400 mm
from one another.
• Lay the data cable shield on both sides - in the Sunny Central and in the Sunny String-Monitor.
Limited number of Piggy-Backs for data processing per hub
• Connect a maximum of 10 Piggy-Backs for data processing per hub.
28
SSM-TEN103132
voltage supply.
DC
SMA Solar Technology AG
Technical Description
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