SMA SI 3324 Errata - Manual (Page 12)

SMA Solar Technology AG Electrical Connection
Installation Guide 12/16 SI3324_4248-E-IEN094410
1.5 Additional Connections
For installing the connections described below (battery temperature sensor, control relays,
communication, etc), either one cable with an external diameter between 7 mm and 14 mm, or two
cables with an external diameter of 6 mm each, may be used for each enclosure opening on the
underside of the enclosure.
The following diagram provides an overview of the connection terminals. The two terminal strips for
the connections are arranged offset above each other.
Position Description
A Control relays: "Start generator" (G_Req)
B Control relays: "Load shedding" (Load_S)
C Response signal: "Generator has been started" (G_Run)
D Battery temperature sensor (TBat)
E Device fans (FAN)
F Communication: RS232 or RS485