SMA WB 3000-21 - Manual (Page 17)

SMA Solar Technology AG 3 Product Description
User Manual WB3-5TL-21-BA-en-10 17
3.6 Slot for Multi-Function Interface
The inverter is equipped with a slot for multi-function interfaces. This slot is designed to connect a
simple multi-function relay, an SMA Power Control Module or a fan retrofit kit. The multi-function
interface can either be retrofitted or installed ex works according to a specific order.
Multi-Function Relay
The multi-function relay can activate and deactivate error messages, for example.
SMA Power Control Module
The SMA Power Control Module enables the inverter to implement grid management and is also
equipped with a multi-function relay.
Fan Retrofit Kit
The fan retrofit kit provides additional cooling of the inverter in the event of high ambient temperatures
and is likewise equipped with a multi-function relay. The fan retrofit kit and the SMA Power Control
Module cannot be operated in parallel.