SMA SC 500HE-US - Manual (Page 54)

9 Grid Monitoring SMA America, LLC
54 SC500HEUS-eng-BE-BUS120320 Operating Manual
1. Start the Sunny WebBox user interface.
2. Enter the installer password in the appropriate field on the homepage and confirm with [Login].
3. If necessary, configure the first limiting value for the underfrequency in the parameter "HzCtllLim"
(see section 6.2 "Changing Parameters", page 34).
4. If necessary, configure the associated time period in the parameter "HzCtllLimTm"
(see section 6.2 "Changing Parameters", page 34).
5. Confirm the parameter entry with [Save].
9.4 Connecting to Grid After Rectifying a Fault
If a grid fault in the inverter has been rectified, the inverter will only switch on once the applicable
power distribution grid meets a set of conditions. For example, the line voltage and the power
frequency must remain within the configured limiting values for grid connection for the duration of the
grid monitoring period.