Yaskawa GA500 AC Drive
Yaskawa GA500 AC Drive code bb: Baseblock
An external baseblock command was received by the system, which immediately stopped the drive output to the motor.
- Code
- bb
- Name
- Baseblock
- Controller
- Yaskawa GA500 AC Drive
- Type
- Safety interlock
- 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 Yaskawa GA500 AC Drive code bb mean?
An external baseblock command was received by the system, which immediately stopped the drive output to the motor.
Is Yaskawa GA500 AC Drive code bb dangerous?
It is graded green: in a working tech's wheelhouse with standard tools and low risk.
How do I fix Yaskawa GA500 AC Drive code bb?
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.