SMA SUNNY ISLAND 5048-US - Relays

Relays SMA America, LLC
136 SI5048U-TUS121440 Technical Description
15 Relays
The Sunny Island offers you several options for the control of internal and external processes. For this
purpose, two relays are integrated into the device with which you can assign functions using the
parameters ”241.01 Rly1Op” and ”241.02 Rly2Op”.
You can find more information on both relays in section 6.4.4”Multi-function Relay 1 and 2”
(page55). The different settings have the following meanings:
Function/Setting Meaning 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120)).
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
Lod1Soc limits are exceeded (see
section 12.1”Load Shedding”
(page101)).
AutoLodSoc1 Auto LoadShedding Soc1 Automatic connection / disconnection
of loads. Connection if Lod1Soc limits
are exceeded (see section 12.1”Load
Shedding” (page101)).
AutoLodSoc2 Auto LoadShedding Soc2 Automatic load disconnection.
Connection if Lod2Soc limits are
exceeded (see section 12.1”Load
Shedding” (page101)).
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 is 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.