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About irradiance sensor alarms
Irradiance sensor alarms reflect non-valid irradiance data during the normal operating mode of the system. The irradiance and nominal power thresholds are linked. Irradiance must not exceed 10 times the threshold percentage.
The alarms monitor the following:
Terms:
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G_M[0..999]
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G_H[0..999]
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G_M_CALC[0..999]
Sensors:
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SRAD
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SRAD[0..999]
Example
Based on the screenshot below:
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The monitoring period begins 30 minutes after sunrise and ends 30 minutes before sunset.
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The alarm with the severity “normal” is triggered when the measured irradiance drops below 10 W/m² and the actual (measured) power exceeds 2% of the nominal (installed) power during the same interval.
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The alarm will only be triggered if the incident persists for 60 minutes.
