SMA SC 100 Indoor - Manual (Page 2)

SMA Solar Technology AG
2/4 SC100_NSM-BXX102611
This document applies to the Sunny Central 100 Indoor / 100 Outdoor with a Sunny Central Control,
firmware version 8.50 or higher. It supplements the user manual for the Sunny Central 100 Indoor /
100 Outdoor.
Active power limitation according to grid operator specification
The Sunny Central 100 Indoor / 100 Outdoor is capable of limiting active power output according
to the specification of the grid operator. Up to now, this function has been a requirement in Germany
and France only. The factory setting on the Sunny Central is for feeding in 100 % of nominal power
into the public electricity grid.
The grid operator communicates his requirement for current active power limitation to an external
control unit, e.g., a Power Reducer Box. This control unit transfers the active power limitation
requirement to the Sunny WebBox. The Sunny WebBox then transmits the command to the
Sunny Central 100 Indoor / 100 Outdoor. The Sunny Central limits its active power output or
disconnects from the grid.
Display of active power limitation on Sunny Central Control
You can retrieve the current rate of active power limitation of the Sunny Central in Sunny Central
Control by opening the menu "Spot Values > Other" and selecting the parameter "PwrAtLimAct". Sunny
Central Control displays the current rate of active power limitation.
Further Information
For detailed information on active power limitation via the Power Reducer Box, see the technical
description of the Power Reducer Box in the download area under www.SMA.de/en.
Active Power Limitation