ABB ACS580 VFD
ABB ACS580 VFD code A7C1: FBA A communication
Communication between the drive, PLC, and fieldbus adapter module is lost, causing the drive to stop.
- Code
- A7C1
- Name
- FBA A communication
- Controller
- ABB ACS580 VFD
- Type
- Communication
- 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
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- What to do next, in plain words
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Questions about this code
What does ABB ACS580 VFD code A7C1 mean?
Communication between the drive, PLC, and fieldbus adapter module is lost, causing the drive to stop.
Is ABB ACS580 VFD code A7C1 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 A7C1?
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.