Relay - SMA Sunny Island 2012 Technical Description

Relay

14 Relay
The Sunny Island offers you several options for the control of internal and external processes. For
this purpose, there are two relays integrated into the device to which you can assign functions using
the "241.01 Rly1Op" and "241.02 Rly2Op" parameters. Information on connecting the relays is
provided in section 7.6.3 "Multi-function Relays 1 and 2" (Page 63). The different settings are
explained as follows:
Function/
Meaning
Settings
Off Off
On On
AutoLodExt Automatic load shedding subject to an exter-
nal source
AutoLodSoc1 Auto LoadShedding Soc1
AutoLodSoc2 Auto LoadShedding Soc2
Tm 1 Timer 1 (time-controlled switching of relay1) Programmable timer 1 (once, daily, weekly)
Tm 2 Timer 2 (time-controlled switching of relay2) Programmable timer 2 (once, daily, weekly)
Apt-Phs Absorption phase active
ExtVfOk External voltage and frequency OK
GdOn Public grid
Alm Alarm
Rn Run
BatFan Battery Fan
AcdCir Acid Circulation
152 SI2012_2224-TEN082311
SMA Solar Technology AG
Function Desctription
relay remains permanently switched off
(deactivated)
Relay is permanently on (e.g., test of relay
function when commissioning)
Automatic connection / disconnection of
loads Connection takes place only if the
device is connected to an external source
(e.g., generator) or absorption phase is
active
Automatic connection / disconnection of
loads load is only connected if SOC limit 1
has exceeded the set value again
Automatic disconnection of loads load is
only connected if SOC limit 2 has exceeded
the set value again
with duty cycle
with duty cycle
Relay switching when battery charge is in
absorption phase
Extrernal voltage and frequency are in valid
range for connection
Relay is switched if public grid is available
and connected
Sunny Island has a fault; contact is open if
there is a fault (relay is deactivated)
Sunny Island is in operation, contact is
closed (relay is activated) if the device is run-
ning in inverter operation
relay is used for automatic battery room ven-
tilation (switching the fan)
relay is used for automatic acid circulation
(switching the electrolyte pump)
Technical Description