13 Cleaning and Maintenance
SMA Solar Technology AG
Operating manual
SI44M-80H-13-BE-en-15
134
Disconnect the generator from connection AC1
1. Ensure that the generator is stopped permanently.
2.
WARNING
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
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
Phase assignment
Serial number of the master
Line conductor L1
Serial number slave 1
Line conductor L2
Serial number slave 2
Line conductor L3
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
4. Start the installation assistant.
5. Select [
Save and next
] for each step up to the step
System setup
.
