SMA SSM16-11 - Manual (Page 37)

SMA Solar Technology AG 6 Electrical Connection
Installation Guide SSM16-24-IA-IEN105120 37
6.5.3 Connecting the Data Cable in the Sunny String-Monitor
You can use the Sunny String-Monitor SSM as well as the Sunny String-Monitor SSM16-11 and the
Sunny String-Monitor SSM24-11 for string monitoring. These have various numbers of Piggy-Backs
for data processing.
• Sunny String-Monitor SSM: 1 Piggy-Back for data processing.
• Sunny String‑Monitor SSM16-11: 2 Piggy-Backs for data processing.
• Sunny String-Monitor 24-11: 3 Piggy-Backs for data processing.
Parallel Connection of the Data Cables
• If you are using several Sunny String-Monitors, connect them in parallel. This way there
will be an incoming and an outgoing data cable at every Sunny String-Monitor. Only
one incoming data cable is connected to the last Sunny String-Monitor.
Limited Number of Piggy-Backs for Data Processing per Hub
The voltage supply to the measuring boards via the communication cables limits the number
of Sunny String-Monitors that can be connected.
• Connect a maximum of 10 Piggy-Backs for data processing per hub.