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2. Normal Operation mode is the default indication interface for normal
operation. In this mode, the inverter is converting the DC power from the
array to AC power, feeding it continuously to the grid.
3. Standby mode is active when the output voltage and power of PV
modules do not meet the startup conditions or PV voltage and input power
are lower than the set value. The inverter will check automatically whether
it meets the startup conditions in this mode until it turns back to Normal
Operation mode.
4. Fault mode is displayed when the inverter disconnects from the grid due
to a fault in the inverter or grid. Check the Fault log under Current Errors
and reference the “Troubleshooting” table in section 7 to determine the
cause of the error.
6.9 Grid-tied Power Generation
The CPS SCA25KTL-DO/US-208 series inverters have an automatic grid-tied
power generation process. It will check constantly whether AC power grid
meets the conditions for grid-tied power generation, and test whether the PV
array has adequate energy. After all conditions are met, the inverter will enter
Normal Operation mode and export power to the grid. While generating power,
the inverter can detect the power grid at all times, supply current, matching
voltage and frequency of the grid and keep the photovoltaic array output at the
maximum power point.
In case of any abnormality, the inverter will enter the protection program
immediately. In low light conditions when power generation is not enough to
keep the inverter in operation, the inverter will enter standby mode. When the
voltage of PV array changes, becomes stable and higher than the required
start value, the inverter will attempt to start grid-tied power generation again.
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