Internal Measurement Comparison Error
SMA · SUNNY BOY 5000US-8000US Solar Inverter
¿Qué significa MSD-FAC/MSD-Idif ?
An internal measurement comparison error has occurred in the Sunny Boy SB50US-80US-IUS094030, indicating a significant discrepancy between the values measured by the BFR (Betriebsführungsrechner) and SRR (Stromregelungsrechner) processors. This suggests an inconsistency in internal data acquisition related to frequency (FAC) or differential current (Idif).
Causas comunes
- Discrepancy between BFR and SRR measured values for frequency (FAC).
- Discrepancy between BFR and SRR measured values for differential current (Idif).
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Measure AC grid voltage and frequency at the inverter's AC input terminals to confirm stability and compliance with specifications.
- 2
Inspect all DC input and AC output wiring, including ground connections, for proper termination, damage, or corrosion.
- 3
Verify all grid-related and safety-relevant parameters (e.g., frequency limits, voltage thresholds, ground fault settings) in the inverter's configuration.
- 4
Perform a controlled power cycle of the inverter (disconnect AC and DC, wait 5 min, reconnect) to clear potential transient errors.
- 5
Check the inverter's diagnostic logs and real-time data for specific measurement discrepancies between internal processors (BFR/SRR) if accessible via the user interface or service tool.