Relay - SMA Sunny Island 5048 Installation Instructions Manual

SMA
Technologie AG

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
Off
On
AutoGn Auto Generator
AutoLodExt Auto LoadShedding Extern
AutoLodSoc Auto LoadShedding Soc
Tm1 Timer 1
Tm2 Timer 2
Apt-Phs Absorption phase is active
GnRn Generator Run
ExtVfOk External voltage and frequency is OK
GdOn Grid On
Alm Alarm
Rn Run
BatFan Battery Fan
AcdCir 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.
Technical Description
Meaning Functional description
relay is permanently switched off
(deactivated)
relay is permanently switched on (e.g. relay
function test during commissioning)
automatic generator connection
automatic load disconnection
load is connected if sufficient battery
charging current flows (by external supplier,
e.g. generator)
automatic load disconnection
load is only connected if SOC has exceeded
the set value again
programmable timer (once, daily, weekly)
with duty cycle
programmable timer (once, daily, weekly)
with duty cycle
battery charge is in the absorption phase
generator is running (generator is
connected)
external voltage and frequency are within
the valid range for connection
external grid is connected
Sunny Island 5048 has a fault, in case of
fault, contact is open (relay is deactivated)
Sunny Island 5048 is in operation, contact is
closed (relay is activated) if the device is
running in inverter operation
switches the battery room fan on
activates the electrolyte pump (acid
circulation)
SI5048-11:EE4206
Relay
Page 115