SMA S Technical Description page 159

SMA Solar Technology AG
3. Operation
Can I also operate the Sunny Backup 2200 without an external display (Sunny Remote
Control 1)?
The Sunny Backup 2200 can be operated without Sunny Remote Control 1.
1. The Sunny Backup 2200 can be started without Sunny Remote Control 1, however, subsequent
operation is limited (standard settings only). Set the coded rotary switch on the Sunny Backup
2200 to "4".
2. You can start the Sunny Backup 2200 using the Sunny Remote Control 1 and set the
parameters. You then no longer require the Sunny Remote Control 1 for operation. You can
remove the external display.
How can a failure of the public grid be signaled?
A light indicator can be controlled via one of the two internal relays of the Sunny Backup 2200 in
such a manner that e.g. the light indicator is only activated in the event of a grid failure. For instance,
relay 1 can be set to "GdOn" via parameter "241.01 Rly1Op". In turn, an indicator light is switched
via the floating contact.
How can it be signaled that the battery's charge level is low?
A light indicator, or similar device, can be controlled via one of the two internal relays of the Sunny
Backup 2200 in such a manner that the light indicator is only activated when the battery's charge
level is low. For instance, relay 2 can be set to "AutoLodSoc1" via parameter "241.02 Rly2Op". With
the parameter "242.01 Lod1SocTmStr", the activation value can be set to 30 %, for example, and
with the parameter "242.02 Lod1SocTmStp" the deactivation value can be set to 50 %, for example.
How can I determine whether my Sunny Backup system is operating correctly?
The display on the Sunny Remote Control 1 clearly indicates the system status (see section
12.1.1 „Home Screen" (100)). In addition, the battery's charge level should be between 95 % and
100 %. If a warning is indicated (exclamation mark "!" in the lower right-hand corner of the display),
the status of the Sunny Backup System S must be analyzed in more detail.
How can I determine whether the Sunny Backup system is operating in stand-alone
operation?
The display indicates that a grid failure has occurred (see section 12.1.1 „Home Screen" (100)).
How can I test whether my Sunny Backup system will "jump in" if the grid fails?
The functionality of the Sunny Backup system can be tested at any time with the "Test Backup System"
function (see section 19.4 „Function Testing" (137)).
I have discovered that if I simply switch off the Sunny Backup 2200 while the grid is
available, my loads are still powered. But why does my PV system not begin to feed?
In the Sunny Backup System S, grid monitoring is preformed by the Automatic Switch Box S according
to the standard applicable in the installation country and not by the Sunny Boy. The Sunny Boy is
automatically connected to the Automatic Switch Box S (see section 8.2 „AC Connection" (71)).
Once you switch off the Sunny Backup 2200, you also switch off the Automatic Switch Box S, thus
disconnecting your PV system from the public grid.
Technical Description
Troubleshooting/Problem Solving
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