5 Commissioning
SMA Solar Technology AG
System Description 27SI44M-80H-13-MC-IA-en-10
5 Commissioning
5.1 Commissioning Procedure
5.1.1 Commissioning Procedure for an Off-Grid System
The inverter supports different firmware versions that are suitable for different systems.
Inverters using firmware version ≤2.99.99.R are suitable for off-grid systems and systems that are not subject to
the European grid connection conditions in accordance with Regulation (EU) 2016/631 for establishing a
network code (also known as RfG). In addition, inverters with firmware version ≤2.99.99.R may be used in
systems that have been commissioned before April 27, 2019, and that are subject to the grid connection
conditions of VDE-AR-N 4105:2011-08.
Inverters using a firmware version ≥3.00.00.R are only suitable for systems that are operated in parallel with the
utility grid (e.g. SMAFlexibleStorageSystem). The firmware version ≥3.00.00.R complies with VDE-AR-N
4105-11:2018, EN50549-1:2018, C10/11:2018 and EREC G98:2018/G99:2018 of the European grid
connection conditions in accordance with Regulation (EU) 2016/631 for establishing a network code (also
known as RfG), valid from April 27, 2019 within the EU.
Inverters with a firmware version ≤2.99.99.R can be identified by the imprint 2:Off-Grid on the box label.
Invertes with a firmware version ≥3.00.00.R can be identified by the imprint 1:On-Grid on the box label.
• Ensure that the inverter is equipped with a firmware version that are suitable for the respective system.
Procedure See
1. Check the residual-current devices in the Multicluster-Box.* Operating manual for the Multi-
cluster-Box
2. If a Grid-Connect-Box has been installed, check residual-current de-
vices in the Grid-Connect-Box.
Operating manual for the Grid-
Connect-Box
3. Commission the inverter. SunnyIsland operating manual
4. Establish a connection to the user interface of the inverter. The follow-
ing connection options are available to choose from:
• Direct connection via WLAN
• Direct connection via Ethernet
• Connection via Ethernet in the local network
SunnyIsland operating manual
5. Log into the user interface. SunnyIsland operating manual
6. Perform basic configuration of the inverter. Please note, that the per-
sonal SMAGridGuard code for changing the grid-relevant parame-
ters must be available after completion of the first ten operating hours
(see "Application for the SMAGridGuard code" available at
www.SMA-Solar.com).
SunnyIsland operating manual
7. Set the functions of the multifunction relay via the user interface.
Tip: The multifunction relays are connected based on the default val-
ues of the SunnyIsland in the circuitry overviews.
SunnyIsland operating manual
8. Start the system. SunnyIsland operating manual
9. Test the communication in the multicluster system Section5.2, page29
10. Test the battery current sensor. System description "Off-Grid Sys-
tems" of the SunnyIsland