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10027 Internal Warning IDSP GRID UNBL Inverter Grid Unbalance Fault System Severity Level 2 The software declares a Grid Unbalance warning fault when either the current or voltage control loops have been deemed out of control for longer than the Grid Unbalance Time-out period. If two warning faults are received within the period given by Warning to Error time-out, a grid/load fault will be declared. Symptom Probable Cause Analysis Repair Solution Either the current or voltage control loops have been deemed out of control for longer than the Grid Unbalance Timeout period. This fault exists only in the con- trol software with ver- sion number less than 4.20. The control software version of the Inverter DSP does not match that of the Main CPU. Check software version infor- mation of both the Inverter DSP and the Main CPU. Reload the right con- trol software to both the Inverter DSP and the Main CPU. The parameters used to detect this fault are not set properly. Make sure that the frame PM is programmed properly, and it is supported by the installed control software. Re-program the frame PM or reset the limits. Open/Loose Connec- tion Check the connection of the cables between the DPC con- trol board and power board. Tighten cable connec- tions Debris or water in package Inspect the DPC power board, control board and the cables connecting them for any material that could short connections. Clean DPC Faulty DPC Control Board DPC Control Board needs replacing. Replace DPC Control Board Faulty DPC Power Board DPC Power Board needs replacing. Replace DPC Power Board Observe Safety Precautions - Refer to Important Safety Instructions for Details 511521-002 171 Troubleshooting Guide This information is confidential and proprietary to Capstone. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered.PDF Image | Overview SERIES 10000 FAULT CODES Inverter Faults
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