Changing Slave Addresses In A Cluster - SMA SUNNY ISLAND 4.4M Operating Manual

13 Cleaning and Maintenance
Disconnect the generator from connection AC1
1. Ensure that the generator is stopped permanently.
2.
Danger to life from electric shock due to high voltages
High voltages are present on the AC power cables and on the control cables. Touching live components can
result in death or serious injury due to electric shock.
• Disconnect the battery inverter from all voltage sources (see Section 12, page 126).
3. Remove the bridge between the connections AC1 Loads/SunnyBoys L and AC2 Gen/Grid L.
4. If a mobile generator is connected, disconnect the generator from connection AC2.
5. Restore the system-specific connection (see quick reference guide of the used system).
6. Close the battery inverter (see Section 13.10, page 138).
7. Connect the circuit breakers and fuse switch-disconnectors for the energy sources.
Restore the original system configuration (not required for single-phase off-grid system)
1. Switch the battery inverter on (see Section 9.1, page 118).
2. Activate the user interface of the inverter (see Section 8.1, page 104).
3. Log in as Installer (see Section 8.2, page 107).
4. Transfer the original system configuration from the saved file (see Section 10.7, page 123).
Starting the System
1. Start the system (see Section 9.2, page 118).
2. Connect the circuit breakers and fuse switch-disconnectors for the loads.
13.7

Changing Slave Addresses in a Cluster

If you want to change slave addresses (e.g. after replacing a Sunny Island inverter), you can assign the slaves a new
address via the user interface. Only the address is changed; all other configurations remain as they were, e.g.,
assignment of the clusters in a multicluster system. When replacing a master, you must reconfigure the cluster (see the
quick reference guide for the relevant system for configuring single-cluster operation or multicluster operation).
Requirements:
☐ All Sunny Island inverters must be switched off.
Serial numbers of the inverters and assignment of line conductors:
Serial number
Serial number of the master
Serial number slave 1
Serial number slave 2
Procedure:
1. Switch the slaves on first, and then the master (see Section 9.1, page 118).
2. Activate the user interface of the inverter (see Section 8.1, page 104).
3. Log in as Installer (see Section 8.2, page 107).
4. Start the installation assistant.
5. Select [Save and next] for each step up to the step System setup.
134 SI44M-80H-13-BE-en-15
WARNING
Phase assignment
Line conductor L1
Line conductor L2
Line conductor L3
SMA Solar Technology AG
Operating manual