3 interfaces and functions, Interfaces and functions – SMA 20000TL User Manual
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LED
Status
Explanation
Red LED
glowing
Error
An error has occurred. The error must be rectified by a
qualified person (for troubleshooting, see the service man-
ual at
Blue LED
-
No function
4.3
Interfaces and Functions
The inverter can be equipped or retrofitted with the following interfaces and functions:
SMA Speedwire/Webconnect
The inverter is equipped with SMA Speedwire/Webconnect as standard. SMA Speedwire/
Webconnect is a type of communication based on the Ethernet standard. This enables inverter-
optimized 10/100 Mbit data transmission between Speedwire devices in PV systems and the
software Sunny Explorer. The Webconnect function enables direct data transmission between the
inverters of a small-scale system and the Internet portal Sunny Portal without any additional
communication device and for a maximum of 4 inverters per Sunny Portal system. In large-scale PV
power plants, data transmission to the Internet portal Sunny Portal is carried out via the
SMA Cluster Controller. You can access your Sunny Portal system from any computer with an
Internet connection.
Webconnect enables - for PV systems operated in Italy - the connection or disconnection of the
inverter to or from the utility grid and the specifying of the frequency limits to be used via
IEC61850-GOOSE messages.
RS485 Interface
The inverter can communicate via cables with special SMA communication products via the RS485
interface (information on supported SMA products at can be retrofitted and can be used in place of the SMA Speedwire/Webconnect interface in the
inverter.
Grid Management Services
The inverter is equipped with service functions for grid management.
Depending on the requirements of the grid operator, you can activate and configure the functions
(e.g. active power limitation) via operating parameters.
SMA Power Control Module
The SMA Power Control Module enables the inverter to implement grid management services and
is equipped with an additional multifunction relay (for information on installation and configuration,
see the installation manual of the SMA Power Control Module). The SMA Power Control Module
can be retrofitted.
4 Product Description
SMA Solar Technology AG
Operating Manual
STP20-25TL-BE-en-12
14