Infeed: Failure of One or Several Line Phases
Siemens · DAsl Diagnostics and Alarms
What does F06200 mean?
One or more line supply phases have failed, or an overvoltage condition has occurred. This fault can manifest during power-on due to incorrect phase assignment between a VSM and the power unit, or during operation due to a voltage dip, prolonged overvoltage, severe overload, or a missing line reactor. This immediate OFF2 reaction halts operation and indicates a serious power supply instability or hardware misconfiguration that requires immediate attention to prevent damage.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Inspect and correct the phase assignment at the VSM (X521 or X522) and the power unit if they differ.
- 4
Evaluate the load on the system; reduce current peaks if an overload condition is suspected.
- 5
If the fault occurred during operation, carefully review previous alarm messages, particularly A06205, for clues regarding the line supply issue.