SMA Off-Grid Systems - Manual (Page 34)

6 Multicluster System SMA Solar Technology AG
34 Off-Grid-IS-en-30 Installation - Quick Reference Guide
6 Multicluster System
6.1 Circuitry Overview and Connection of the Sunny Island Inverters
You can find a circuitry overview in the Multicluster Box documentation.
6.2 Basic Configuration
Requirements:
☐ The off-grid system must be installed according to the circuitry (see Multicluster Box documentation).
☐ In the Multicluster Box, all Sunny Island circuit breakers must be open. As a result, the Sunny Island inverters are not
connected to an AC source.
☐ The Sunny Remote Control must be connected to the master of each cluster. This determines which Sunny Island is
the master during the basic configuration.
Procedure:
Required device types for multicluster systems
In multicluster systems, the Sunny Island inverters must be device type SI6.0H-11 or SI8.0H-11.
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Damage to the battery due to incorrect settings
The battery parameters influence the charging behavior of the Sunny Island inverter. The battery can be damaged by
incorrect settings of the parameters for battery type, nominal voltage, and capacity.
• Ensure that the values recommended by the battery manufacturer are set for the battery during basic configuration
(for the battery technical data, see the documentation of the battery manufacturer).
• In the basic configuration, configure the battery capacity for a ten-hour electric discharge (C10). The battery
manufacturer specifies the battery capacity in relation to discharge time.
Check the wiring
(see the Sunny Island inverter installation manual).
Close all devices except the BatFuse.
This protects all live components from being touched.
Close the BatFuse and press and hold the "On" button on each
master until you hear an acoustic signal.