SMA SI 5048 - Multi-Function Relays 1 and 2

Electrical Connection SMA Solar Technology AG
44 SI5048-TEN093630 Technical Description
6.4.4 Multi-function Relays 1 and 2
The Sunny Island offers you several options for the control of internal and external processes.
For this purpose, two multi-function relays are integrated into the Sunny Island to which you can assign
functions via the using the "241.01 Rly1Op" and "241.02 Rly2Op" parameters (see chapter
15”Relays” (page123)).
We recommend connecting the load shedding and generator request functions to the master, since,
if a failure occurs, the slave may be waiting for a confirmation, but the master continues to operate
and the device can at least operate in a limited capacity.
Operating principles of the relays
The relays are changeover contacts; they can be used as normally closed contacts (NCC)
or as normally open contacts (NOC).
You can only assign one function to each relay!