Warning - DCF4

Thomas Garcia

Modified on: Thu, 24 Jan, 2019 at 7:18 AM

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