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4 Product OverviewSMA Solar Technology AG <br />Installation Manual SBxx-1SP-US-41-IA-xx-12 21 <br />event will be reported at the latest one day after the detection of the defective string. This prevents <br />partial failures of the PV array from being undetected for a long time and which will result in yield <br />losses. The self-learning string failure detections automatically identifies if a string has been repaired <br />and resets the event. If the defective string should no longer be connected, the event must be reset <br />manually. <br />Arc-Fault Circuit Interrupter (AFCI) <br />In accordance with the National Electrical Code®, the inverter has a system for DC arc fault <br />detection and interruption. The arc-fault circuit interrupter is listed in accordance with UL 1699B <br />Ed. 1. A detected electric arc causes the inverter to interrupt feed-in operation for a short time and <br />to resume the feed-in operation automatically. If the installation conditions allow it, you can <br />deactivate the arc-fault circuit interrupter. <br />SMA Smart Connected <br />SMA Smart Connected is the free monitoring of the product via the SMA Sunny Portal. Thanks to <br />SMA Smart Connected, the operator and qualified person will be informed automatically and <br />proactively about product events that occur. <br />SMA Smart Connected is activated during registration in Sunny Portal. In order to use SMA Smart <br />Connected, it is necessary that the product is permanently connected to Sunny Portal and the data <br />of the operator and qualified person is stored in Sunny Portal and up-to-date. <br />4.4 LED Signals <br />The LEDs indicate the operating state of the inverter. <br />LED signal Explanation <br />The green LED is flashing <br />(two seconds on and <br />two seconds off) <br />Waiting for feed-in conditions <br />The conditions for feed-in operation are not yet met. As soon as the <br />conditions are met, the inverter will start feed-in operation. <br />The green LED is flashing <br />(1.5 s on and 0.5 s off) <br />Secure power supply operation <br />The secure power supply operation is enabled and the inverter sup- <br />plies the outlet with current from the PV system. <br />The green LED flashes <br />quickly <br />Update of central processing unit <br />The central processing unit of the inverter is being updated. <br />The green LED is glowing Feed-in operation <br />The inverter feeds in with a power of at least 90%. <br />The green LED is pulsing Feed-in operation <br />The inverter is equipped with a dynamic power display via the green <br />LED. Depending on the power, the green LED pulses fast or slow. If <br />necessary, you can switch off the dynamic power display via the <br />green LED. <br />The green LED is off The inverter is not feeding into the utility grid. <br />EN <br />G <br />L <br />I <br />S <br />H <br />534 S Sycamore St <br />- 10110979707/01/22