High Feedback Fault

What does HFB mean?

The iQpump has detected that the feedback signal level has risen above the programmed threshold (P1-09) and remained above this level for the duration specified in parameter P1-10. This condition triggers a fault, causing the iQpump to coast to a stop for system protection. This fault function is active during running in all operation modes.

• Feedback signal level rising above the P1-09 (High Feedback Level) threshold.
• Sustained high feedback level for a period exceeding P1-10 (High Feedback Level Fault Delay Time).
• Actual high process variable (e.g., system overpressure) in the system.
• A faulty feedback transducer providing a continuously high signal.

Click steps to track your progress.

1. 1

   Verify parameter P1-09 (High Feedback Level) is set to the correct maximum allowable feedback value for the system.

2. 2

   Verify parameter P1-10 (High Feedback Level Fault Delay Time) is set appropriately to detect sustained issues without nuisance tripping.

3. 3

   Measure the actual process variable (e.g., pressure) and compare it to the feedback signal reported by the iQpump.

4. 4

   Check the feedback transducer for proper operation and inspect its wiring and connections for integrity.