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Warning - DCF4

Display - Vdc Over


Description-

Software DC Overvoltage Detection.Detected when the primary DC voltage exceeds 1080 Vdc for 60 seconds


Resolution-

Typical extreme cold condition: array Voc exceeds 1,000 V when inverter is in sleep mode.


1. Verify ambient temperatures and array or string open-circuitvoltage (Voc)


2. Check possible miss-wiring in the array … exceeding design-limit of modules/string


3. Check HMI Monitors, Main menu; 'DC Voltage


4. Check Main VTB4 sensor in DC cabinet section

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