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.
Summary of Contents for SI 5048
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