ABB ACS580 VFD
ABB ACS580 VFD code A5EF: PU state feedback
The state feedback from the output phases does not match the control signals, causing the drive to stop.
- Code
- A5EF
- Name
- PU state feedback
- Controller
- ABB ACS580 VFD
- Type
- Internal fault
- What it does
- Warning: the equipment keeps running and flags a problem
- Risk
- GREEN In your wheelhouse
- Reset
- Clears on its own when the condition goes away
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated November 4, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- What the manual says to do, and the page it is on
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Questions about this code
What does ABB ACS580 VFD code A5EF mean?
The state feedback from the output phases does not match the control signals, causing the drive to stop.
Is ABB ACS580 VFD code A5EF dangerous?
It is graded green: in a working tech's wheelhouse with standard tools and low risk.
How do I fix ABB ACS580 VFD code A5EF?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.