F06850 — Infeed: Short-circuit prevailing for too long

F06850 is the fault the manual calls Infeed: Short-circuit prevailing for too long. The infeed raises it when a short-circuit lasts longer than the maximum permissible duration configured in p5458[1] and p5528[1] — the short-circuit could not be cleared within this time. The infeed then trips with OFF2 and cannot run again until the fault has been acknowledged.

• The maximum permissible duration for the short-circuit, set in p5458[1] and p5528[1], has been exceeded.
• The short-circuit could not be cleared within this time.

1. Check the minimum time parameter setting in p5458[1] and p5528[1].
2. Check the line supply and the fuses.

• p5458[1] — Current hysteresis controller minimum time operating state: one of the two times that define the maximum permissible short-circuit duration; check this setting when F06850 occurs.
• p5528[1] — Dynamic grid control operating state times: the second time that limits how long the short-circuit may prevail; check it together with p5458[1].
• p5509 — Dynamic grid support scaling values: the manual cross-references this parameter from the cause of this fault.

Remove the cause first: verify the minimum time settings in p5458[1] and p5528[1], and check the line supply and its fuses. Then acknowledge the fault immediately — the drive expects acknowledgment with POWER ON. Because the infeed tripped with OFF2, it stays shut down until the acknowledgment is made and can then be restarted.