SMA SI 5048 - Relays

SMA Solar Technology AG Relays
Technical Description SI5048-TEN093630 123
15 Relays
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
"261.01 Rly1Op" and "261.02 Rly2Op" parameters.
You can find more information on both relays in chapter 6.4.4”Multi-function Relays 1 and 2”
(page44). The different settings have the following meanings:
Function/Setting Purpose Function description
Off Off Relay remains permanently switched
off (deactivated).
On On relay remains permanently switched on
(e.g. relay function test during
commissioning)
AutoGn Automatic generator request the generator is automatically
activated due to set criteria
(see section 14.1.5”Automatic
Generator Operation” (page109)).
AutoLodExt automatic load shedding dependent
on an external source
Automatic connection/disconnection
of loads. Connection only occurs if the
device is connected to an external
source (e.g. generator), or if the
absorption phase is active.
AutoLodSoc1 Auto LoadShedding Soc1 Automatic connection/disconnection
of loads. Load is only connected if
SOC limit 1 has exceeded the set
value again.
Auto LoadShedding Soc2 Automatic disconnection of loads;
connection occurs only if SOC limit 2
has exceeded the value set again.
Tm1 Timer 1
(time-controlled switching of relay 1)
programmable timer
(once, daily, weekly) with duty cycle.
Tm2 Timer 2
(time-controlled switching of relay 2)
programmable timer
(once, daily, weekly) with duty cycle.
AptPhs Absorption phase active Relay switching when battery charge is
in absorption phase.
GnRn Generator active Relay switching when generator is in
operation and connected.
ExtVfOk External voltage and frequency is OK External voltage and frequency are
within the valid range for connection.
GdOn Public grid Relay switching when public grid is
available and connected.