SMA SI 4548-US - Manual (Page 144)

16 Multicluster Operation SMA America, LLC
144 SI4548-6048-US-BE-en-20 Operating Manual
16.2 Commissioning the Multicluster System
1. Perform steps 1 to 3 of the QCG start (see Section 8.2 "Starting the Quick Configuration Guide
(QCG)", page 68).
2. The following parameters must be set when "New Battery" is selected:
– Device type (master, slave 1, slave 2, slave 3)
– System configuration (3Phase, 1Phase 1, 1Phase 2, 1Phase 3, 2Phase 2, 2Phase 4,
MC-Box), for multicluster operation choose "MC-Box". Default setting: "1Phase 1"
– Multicluster configuration (MainCluster, ExtensionClst1, ExtensionClst2, ExtensionClst3),
default setting: "MainCluster"
– Device type of the Multicluster Box (MC-Box-12), default setting: "MC-Box-12"
3. For further settings, follow the QCG instructions (see Section 8.2 "Starting the Quick
Configuration Guide (QCG)", page 68).
Possible load shedding during initial start-up of a multicluster system
Unwanted load shedding can occur during the initial start-up of a multicluster system. The
possible causes of this can be a too-low state of charge of the battery or a still too inaccurate
charge level calculation in the Sunny Island.
• Disconnect all loads before the initial start-up of a multicluster system.
• After initial start-up, observe the SOC on the master of the main cluster via the parameter
"120.01 BatSoc". As soon as the SOC has risen above 50%, connect the loads.