SMA SI 3.0-11 Installation - Manual (Page 90)

8 Commissioning SMA Solar Technology AG
90 SI30M-44M-60H-80H-IA-en-30 Installation Manual
3. To set timer 2, set the start date, start time, duration and repetition cycle:
• Select the parameter 243.05 RlyTmr2StrDt and set it to the desired start date.
• Select the parameter 243.06 RlyTmr2StrTm and set it to the desired start time.
• Select the parameter 243.07 RlyTmr2Dur and set it to the desired duration.
• Select the parameter 243.08 RlyTmr2Cyc and set it to the desired repetition cycle.
• Ensure that the multifunction relay used for control is set to Tm2 (see Section 8.1.5 "Setting the Functions of the
Multifunction Relays", page 66).
8.6 Changing Thresholds for Systems for Increased Self-Consumption
The Sunny Island meets the requirements of the application rule "VDE-AR-N 4105:2011-08 - Power
generation systems connected to the low-voltage distribution network - Technical minimum requirements for the
connection to and parallel operation with low-voltage distribution networks". In the Sunny Island, the application rule is
defined as standard country data set VDE-AR-4105.
In certain countries, the settings may need to be modified for connection of the Sunny Island inverter to the utility grid.
Procedure:
• If the operation of the Sunny Island connected to the utility grid is allowed and an adjustment is necessary, change
the Sunny Island according to the documentation (see www.SMA-Solar.com).
8.7 Changing the Automatic Frequency Synchronization in Off-Grid
Systems
Automatic frequency synchronization enables the use of clocks which use the power frequency as a timer. The
power frequency determines the accuracy of the clock. For power frequencies with constant frequency deviations from
the rated frequency, the time indications will become more and more inaccurate.
Continuous frequency deviations occur, e.g. in off-grid systems with generators. If the automatic frequency
synchronization is activated, the Sunny Island regulates the frequency deviations over time. As a result, the accuracy of
clocks that use the power frequency as timers is increased.
Procedure:
1. Switch to expert mode on the Sunny Remote Control (see the Sunny Island inverter operating manual).
2. To deactivate automatic frequency synchronization, select the parameter 250.11 AfraEna and set it to Disable.
3. To activate automatic frequency synchronization, select the parameter 250.11 AfraEna and set it to Enable.