Display - Array Low
Low irradiance detection.
This is detected when DC Power is less than 7.5 kW or DC Voltage is under minimum PV Vdc for >10 msec.
Resolution-Normal Operation (No Action Required)
■ Evening transition from power-export to sleep states due to waning irradiance
■ Common in early morning when low irradiance can’t support power-export Abnormal Operation (typically when solar irradiance > 200 W/m2)
■ Verify solar array modules for damage and source and output ckts wiring defects
■ Verify inverter re-combiner, input OCPDs and bus-bar connections