F06211 — Infeed: Summation current impermissibly high

F06211 (Infeed: Summation current impermissibly high) means that the power unit has measured a smoothed sum of the phase currents (i1 + i2 + i3) above the threshold parameterized for the ground fault monitoring (p0287). The manual describes the fault in two variants: one for the infeed drive objects A_INF, R_INF and S_INF, one for the vector drive objects VECTOR, VECTOR_AC, VECTOR_I_AC and VECTOR_G. The drive trips and coasts down, and it does not restart until the fault is acknowledged.

• A ground fault that results in a high summation current — the manual anchors this condition to signal r0069.6. For the infeed drive objects it warns: The DC component in the line currents can damage/destroy the power unit, line reactor or line filter! On the vector drive objects (VECTOR, VECTOR_AC, VECTOR_I_AC, VECTOR_G) the same warning names the power unit, reactor, filter — and additionally the motor.
• Only on the infeed drive objects A_INF, R_INF and S_INF: the zero point calibration of the current measurement was not carried out (the manual references p3491 and alarm A06602 here).
• The current measurement in the power unit is defective.

1. Check the line supply for ground faults and remove any that are present; signal r0069.6 shows whether the drive is detecting a ground fault.
2. Check the set threshold for the ground fault monitoring (p0287).
3. If required, replace the power unit.

• The message value is a placeholder; the drive stores the fault value in r0949 as a floating-point number.
• For this fault, r0949 contains the smoothed total of the phase currents — the value that exceeded the p0287 threshold.
• On the infeed drive objects (A_INF, R_INF, S_INF) this total is specified as the peak value.

• p0287 — shutdown threshold of the ground fault monitoring: the trip occurs when the smoothed phase-current sum exceeds the value set here, so check this threshold.
• r0069 — bit r0069.6 is where the manual anchors the ground-fault cause; read this bit to confirm or rule out a ground fault.
• p3491 — monitoring time of the infeed I-offset measurement; cited for the missing zero point calibration of the current measurement (together with alarm A06602), infeed drive objects only.
• r0949 — fault value: for this code it holds the smoothed total of the phase currents as a floating-point value (peak value on the infeed drive objects).

Acknowledge the fault immediately. The manual's entry additionally requires a power-on cycle: the fault is only completely cleared once the power supply has been switched off and on again. So remove the cause first — ground fault eliminated, p0287 threshold checked, power unit replaced if required — then switch the supply off and on, acknowledge, and restart the drive.