SMA Technologie AG Relay
Technical Description SI5048-11:EE4206 Page 115
15 Relay
The Sunny Island 5048 provides you with many options to control internal and external
operations. For this purpose, two relays are integrated into the device with which you
can assign functions using the "#261.01 Rly1Op" and "#261.02 Rly2Op" parameters.
Information on the connection of both relays is provided in section 6.4.4 "Multi-function
Relay 1 and 2" (Page 47). The different settings have the following meanings:
Function/
Settings
Meaning Functional description
Off relay is permanently switched off
(deactivated)
On relay is permanently switched on (e.g. relay
function test during commissioning)
AutoGn Auto Generator automatic generator connection
AutoLodExt Auto LoadShedding Extern automatic load disconnection
load is connected if sufficient battery
charging current flows (by external supplier,
e.g. generator)
AutoLodSoc Auto LoadShedding Soc automatic load disconnection
load is only connected if SOC has exceeded
the set value again
Tm1 Timer 1 programmable timer (once, daily, weekly)
with duty cycle
Tm2 Timer 2 programmable timer (once, daily, weekly)
with duty cycle
Apt-Phs Absorption phase is active battery charge is in the absorption phase
GnRn Generator Run generator is running (generator is
connected)
ExtVfOk External voltage and frequency is OK external voltage and frequency are within
the valid range for connection
GdOn Grid On external grid is connected
Alm Alarm Sunny Island 5048 has a fault, in case of
fault, contact is open (relay is deactivated)
Rn Run Sunny Island 5048 is in operation, contact is
closed (relay is activated) if the device is
running in inverter operation
BatFan Battery Fan switches the battery room fan on
AcdCir Acid Circulation activates the electrolyte pump (acid
circulation)
You can only assign one function to each relay. If the devices are connected in
parallel, the relays of the slaves can also be used. They are set using the master.
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