bAT
Digital Operator Battery Voltage Low
Yaskawa · Drive Fault Codes
What does bAT mean?
The battery voltage within the digital operator (keypad) is critically low, impacting its ability to retain settings or operate correctly when disconnected from the drive. This indicates a potential data loss risk for parameters or logged data.
Common Causes
- Internal battery in the digital operator is depleted
- Battery is faulty or has reached its end of life
- Poor contact between the battery and its terminals.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Replace the battery in the digital operator following the manufacturer's instructions.
- 2
Clean the battery contacts in the digital operator to ensure good electrical connection.
- 3
Verify proper seating of the replacement battery and check for secure closure of the battery compartment.
Verified technical data. Last updated: March 2026
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Source: Yaskawa Drive Fault Codes