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.
