What causes fault code AB-F006 (PowerFlex Fault Code F33 - Auto Rstrt Tries)?

Underlying fault keeps recurring — drive restarts then faults again. Intermittent motor short — works briefly then trips on ground fault or overcurrent. Power quality issue — voltage sags cause repeated UV faults. Mechanical load cycling between free and jammed states. Auto restart parameters too aggressive

How do I fix fault code AB-F006?

Check fault log/queue on drive — the fault BEFORE F33 is the real problem. Fix the underlying recurring fault (usually OC, OV, UV, or GF). Check motor and cables for intermittent problems. Review auto restart settings: number of tries, delay between tries. If power quality issue, add line reactor or investigate facility power. Manual reset required after F33 — clearing the root cause is mandatory

PowerFlex Fault Code F33 - Auto Rstrt Tries

AB-F006

PowerFlex drive exhausted all automatic restart attempts. Drive faulted repeatedly and gave up trying to restart.

high allen-bradley vfd

allen-bradley powerflex auto restart recurring fault

Probable Causes (ranked)

Underlying fault keeps recurring — drive restarts then faults again
Intermittent motor short — works briefly then trips on ground fault or overcurrent
Power quality issue — voltage sags cause repeated UV faults
Mechanical load cycling between free and jammed states
Auto restart parameters too aggressive

Fix Steps

1 Check fault log/queue on drive — the fault BEFORE F33 is the real problem
2 Fix the underlying recurring fault (usually OC, OV, UV, or GF)
3 Check motor and cables for intermittent problems
4 Review auto restart settings: number of tries, delay between tries
5 If power quality issue, add line reactor or investigate facility power
6 Manual reset required after F33 — clearing the root cause is mandatory

Field Trick

F33 is never the real fault. Scroll back in the fault log — the fault right before it is what you need to fix.

Suggested Replacement Parts

Parts matched to fault category: Vfd Drive

Allen-Bradley PowerFlex 525 AC Drive 1HP P/N: 25B-D2P3N114 1HP, 480V, 3-phase, built-in EtherNet/IP, EMC filter

AutomationDirect $395.00 Amazon $450.00 Grainger $520.00

ABB ACS580 General Purpose Drive 2HP P/N: ACS580-01-05A7-4 2HP, 480V, built-in safe torque off, adaptive programming

AutomationDirect $425.00 Amazon $480.00 Grainger $550.00

GS20 AC Drive 1HP (Budget Option) P/N: GS20-20P5 1HP, 230V, sensorless vector, compact size — good replacement for testing

AutomationDirect $149.00 Amazon $175.00

Prices are estimates. Verify part numbers match your equipment before ordering.

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