HFB
High Feedback
Yaskawa · iQpump1000 AC Drive
What does HFB mean?
The feedback signal has risen above the level set in P1-11 (High Feedback Level) for the time set in P1-12 (High Feedback Level Fault Delay Time). This fault is effective only when P1-13 (High Feedback Selection) is set to 0 (Fault and digital output).
Common Causes
- Feedback signal has risen above the threshold P1-11 for longer than the delay time P1-12.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Set the High Feedback fault characteristics using parameters P1-11 and P1-12.
- 2
Control drive response to this condition using P1-13 (High Feedback Selection).
- 3
Control auto-restart of this fault using L5-41 (High Feedback Fault Retry Selection).
Verified technical data. Last updated: March 2026
Related Faults
Source: Yaskawa iQpump1000 AC Drive