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10018 Internal Fault IDSP UNDER FREQ Inverter Underfrequency System Severity Level 4 In the Grid Connect mode, the AC underfrequency indicates that the grid is operating under some fault condition or that a local island has formed. In the Stand Alone mode, the AC underfrequency may damage the customer load. In either case, it is important that the inverter be shut down. The software declares an AC underfrequency fault when the estimate of AC frequency falls below AC Minimum Frequency Limit, for a period of time greater than the AC Underfrequency Time-out. Symptom Probable Cause Analysis Repair Solution The estimated AC frequency exceeds AC Min Frequency Limit for a period of time greater than the AC Underfrequency Time- out setting. The AC Minimum Frequency Limit is wrongly set. Make sure that the power board PM is programmed properly, and it is supported by the control software being used. Re-program the power board PM. The AC Under- Frequency Time- out is wrongly set. Make sure that the power board PM is programmed properly, and it is supported by the control software being used. Re-program the power board PM. The grid is in fault condition Check the quality of the grid and make sure that no local island has formed. Clear the fault condition of the grid. Faulty DPC Control Board DPC Control Board needs replacing. Replace DPC Control Board (See Document 513176) Faulty DPC Power Board DPC Power Board needs replacing. Replace DPC Power Board Observe Safety Precautions - Refer to Important Safety Instructions for Details 430001-001 Rev A (Apr 2002) 170 Troubleshooting Guide Capstone Turbine Corporation reserves the right to change or modify without notice the design, the equipment specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | Overview SERIES 8000 FAULT CODES Solenoid Faults
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