F07913 — Excitation current outside the tolerance range

F07913 tells you that the excitation current is no longer being held within its tolerated range: the difference between the actual value (r1641) and the setpoint (r1626) has grown larger than the threshold p3201 plus the hysteresis p3202, i.e. abs(r1641 - r1626) > p3201 + p3202. As soon as the deviation falls back below p3201, the underlying condition resets itself in the background — but a fault that has tripped must still be acknowledged before the drive will run again.

• The excitation current actual value r1641 and the setpoint r1626 have drifted apart beyond the tolerated band: abs(r1641 - r1626) > p3201 + p3202.
• The fault condition is considered cleared again as soon as abs(r1641 - r1626) drops below p3201.

1. Check the parameterization this monitoring works with: p1640 (signal source of the excitation current actual value), p3201 (tolerance threshold) and p3202 (hysteresis).
2. Check the interfaces to the excitation equipment — the setpoint at r1626 and the actual-value path configured in p1640.
3. Check the excitation equipment itself.

• r1641 — excitation current actual value: shows what the drive currently measures, for comparison against the setpoint.
• r1626 — CO: excitation current setpoint: the value the excitation current should reach; compare it with r1641 while the fault is present.
• p3201 — excitation current tolerance threshold: the fault trips above p3201 + p3202, and the condition releases again below this threshold.
• p3202 — excitation current tolerance hysteresis: the amount added to p3201 at which the fault trips.
• p1640 — CI: signal source of the excitation current actual value: defines where the drive reads the measured excitation current from; check it when the interface to the excitation equipment is suspect.

The drive coasts down (OFF2) when this fault trips. Acknowledge it immediately; the drive can then be restarted. Note that the monitored deviation already clears itself once abs(r1641 - r1626) is below p3201 — acknowledging removes the latched fault message from the drive.