Electrical Connection SMA Solar Technology AG
52 SMC9-11TLRP-IEN100640 Installation Guide
5.9.3 Grid Safety Management via External Active Power Limitation
The "P-WMod" parameter allows you to select the active power process. 3 settings can be selected.
The maximum possible AC active power can be set externally for Sunny Mini Central inverters via
communication (WebBox with Power Reducer Box) (e.g. via a ripple control signal). This process is
activated for all devices on delivery. The active power is restricted via the Power Reducer Box (Mode 1).
A fixed limitation of the active power of an individual inverter can also be set, however external
specification via the Power Reducer Box is then no longer possible.
Procedures and Configuration Parameters
Configuration Options for "WCnst"
Default settings
In the table below, default settings are marked with *.
Procedure Setting Description
P-WMod Off The process is deactivated.
WCnst Limitation of the maximum active power of the inverter
(Mode 2).
WCtlCom* Limitation of the maximum active power via
communication with a Power Reducer Box (Mode 1).
Setting Parameters Description Value range Default
WCnst P-W Limitation of the maximum active
power.
0 ... 11110 11000
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