SMA SSM8-21-BS - Manual (Page 16)

4 Product Description SMA Solar Technology AG
16 SSMxx-21-IA-BS-JP-en-20 Installation Manual
The integrated surge arrester for the DC main cable can be monitored via the Sunny String-Monitor.
4.6 LEDs on the String-Monitor Unit
The LEDs are installed on the String-Monitor Unit. You can determine the status of the communication, voltage supply or
surge arresters via the LEDs.
Figure 6: LEDs on the String-Monitor Unit
4.7 Type Label
The type label clearly identifies the Sunny String-Monitor. There are two type labels attached to the Sunny String-Monitor.
The type labels are located inside the right-hand door and on the right-hand outside panel of the Sunny String-Monitor.
You will find the following information on the type label:
• Device type and option code
• Serial number
• Production version
• Device-specific characteristics
You will require the information on the type label to use the product safely and when seeking customer support from the
SMA Service Line. The type label must remain permanently attached to the product.
Voltage supply to the Sunny String-Monitor ✖ ✓
Designation Name of LED Status Explanation
A DIN1 glowing green The surge arrester is active.
off The surge arrester has tripped.
B RS485 off No data is being exchanged via the
RS485 interface.
glowing yellow Data is being transmitted via the RS485
interface.
C Error off The String-Monitor Unit is functioning
correctly.
glowing red The String-Monitor Unit is defective.
Components to be protected SSMxx-21-BS SSMxx-21-BS-JP