SMA SI 3.0-11 - Manual (Page 72)

9 Troubleshooting SMA Solar Technology AG
72 SI30M-44M-60H-80H-BE-en-30 Operating Manual
9.6 Charging the Battery After Automatic Shutdown in Off-Grid Systems
When a battery undergoes a deep discharge, the Sunny Island shuts down automatically and you cannot restart the
Sunny Island. In order to start the Sunny Island again after an automatic shutdown, you must charge the battery in
emergency charge mode.
In emergency charge mode, the Sunny Island does not form a separate stand-alone grid, and you can charge the battery
using a generator. Battery management is active in emergency charge mode and the Sunny Island charges the battery
in accordance with the parameter settings. In standby mode or in the QCG, you can adjust the parameters for the battery,
e.g., the battery nominal voltage, if a battery cell fails.
Requirement:
☐ The Sunny Remote Control must be connected to the master.
☐ The system must be an off-grid system.
☐ Lead-acid batteries must be connected.
Procedure
• Connect the generator to connection AC1.
• Charge the battery.
• Disconnect the generator from connection AC1.
• Start the off-grid system.
Connecting the generator to connection AC1
2. If a generator is installed permanently in the off-grid system, bridge the connections AC1 and AC2.
3. If a mobile generator is used, connect the generator to connection AC1 (see the Sunny Island inverter installation
manual).
4. Close the Sunny Island (see Commissioning section in the Sunny Island inverter installation manual).
Charging the battery
1. Switch off all loads.
2. Connect or close all circuit breakers and fuse switch-disconnectors for energy sources.
3. Quickly connect the load-break switch of the BatFuse and close the BatFuse (see BatFuse installation manual).
4. Start the generator.
5. Switch the Sunny Island on (see Section 4.1, page 18).
Restricted management functions in emergency charge mode
In emergency charge mode, the generator management is not active. The limits for voltage, current and frequency
are not monitored. Set the maximum current consumption of the Sunny Island inverter for charging the battery in
emergency charge mode. The Sunny Island does not record additional strain on the generator due to loads.
1. :$51,1*
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 parts can result in death
or serious injury due to electric shock.
• Disconnect the Sunny Island from voltage sources (see Section 8, page 40).