Irradiance sensor alarms

Last modified: 02 Jul 2025

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:

• G_M[0..999]

• G_H[0..999]

• G_M_CALC[0..999]

Sensors:

• SRAD

• SRAD[0..999]

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Example

Based on the screenshot below:

• 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.

• The alarm will only be triggered if the incident persists for 60 minutes.