Sunny Island 4500
Installation & Operating Instructions
BWRI45-13-EE0304
- 169 -
SMA Regelsysteme GmbH
11.6.2 Three-Phase System
Up to two three-phase Sunny Island clusters can be connected in parallel. In order to
be able to control a generator, the clusters have to communicate their energy states.
A communication cable is therefore required (in addition to the synchronization ca-
bling on COM1). This cable has to be attached to the COM2-ports of the Slave2’s
resp. the Slave3’s of each cluster as shown in Fig. 11.8.
It is also visible that in this configuration each cluster needs its own battery.
The recommendations given for the parameter settings refer to a system including a
generator. For systems without a generator please refer to Chapter 11.7.2.
The parameter „603_GenSet Interf“ has to be set equally for each Mas-
ter. This means, that the corresponding relays of all Masters in the sys-
tem are not available anymore for any other purposes, even though the
generator is controlled by the relays of the „Super Master“ only.
Fig. 11.8:
Two three-phase clusters in parallel w/ data interchange