F06207 — Infeed: Line currents asymmetrical

F06207 is issued by the infeed when the asymmetry of the line currents is continuously too high — the imbalance between the currents of the individual line phases persists instead of appearing only briefly. The most probable cause is the failure of a line phase. Depending on how the drive is configured, the same condition can also be output as an alarm (A) or with no reaction at all (N).

• The asymmetry of the line currents is continuously too high — the drive measures a persistent imbalance between the phase currents.
• The most probable cause is the failure of a line phase.

1. Check the preceding alarm A06206 and its alarm value.
2. Check the line supply, the terminals and the fuses.
3. Check the settings in p3462 and p3465 (see the parameter list below).
4. Check the connection and the size (rating) of the line filter and/or the line commutating reactor.

• The drive enters the fault value as a floating-point number in r2133.
• Digits to the left of the decimal point: highest rms phase current in amps.
• Decimal places: quotient of the lowest and highest rms phase current value.

• r2133 (fault value for float values) — holds the fault value of this message as a floating-point number; read it to see which phase current the monitoring recorded and how strongly the currents diverge (decoding above).
• p3462 (infeed phase failure detection times) — the remedy asks you to check these detection-time settings.
• p3465 (infeed current symmetry monitoring thresholds) — the remedy asks you to check the symmetry thresholds here.

The fault stops the drive with OFF1. Once the cause has been eliminated, the message is acknowledged immediately; a POWER ON also acknowledges it, and only then can the drive start again. If the condition is configured with reaction N, the drive takes no action and no acknowledgment is needed.