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

SMA Solar Technology AG
Disconnecting the generator from connection AC1
1. Switch the Sunny Island off (see Section 10.4 "Switching Off the Sunny Island", page 125).
2. Ensure that the generator is stopped permanently.
3.
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 Sunny Island from voltage sources (see Section 13, page 132).
4. If the connections AC1 and AC2 are bridged, remove the bridge.
5. If a mobile generator is used, disconnect the generator from connection AC1.
6. If the system is a single-cluster system (single-phase or three-phase) or a multicluster system, restore the system-
specific connection (see quick reference guide of the used system).
7. Close the Sunny Island (see Section 14.11, page 142).
Starting the Off-Grid System
• Recommission the inverter (see Section 14.12, page 143).
14.8

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.
Procedure:
1. Switch the slaves on first, and then the master (see Section 10.1, page 124).
2. Activate the user interface of the inverter (see Section 8.1, page 110).
3. Log in as Installer (see Section 8.2, page 112).
4. Start the installation assistant.
5. Select [Save and next] for each step up to the step System setup.
6. For a single-phase system, set the parameter Type to Single phase.
7. For a three-phase system, set the parameter Type to Three phase.
8. Under System devices, set the parameters Serial number and Phase assignment as follows.
Serial number
Serial number of the master
Serial number slave 1
Serial number slave 2
9. Select [Save and next] until the installation assistant closes.
10. Start the system (see Section 10.1, page 124).
Operating Manual
Phase assignment
Line conductor L1
Line conductor L2
Line conductor L3
SI44M-80H-12-BE-en-10
14 Cleaning and Maintenance
139