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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

bAT

Keypad Battery Low Voltage

Yaskawa · GA500 Maintenance and Troubleshooting

What does bAT mean?

The internal battery providing backup power to the keypad has dropped to a low voltage level. This condition compromises the keypad's ability to retain parameter settings or maintain its display, potentially leading to loss of drive configuration or operational instability from the keypad if not addressed promptly.

Common Causes

  • Voltage of the keypad's internal battery is too low (P10-01).
  • Battery requires replacement to maintain settings.
  • Keypad lost power and is relying on backup cell.
  • Low voltage detected on the keypad's power circuit.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace the keypad battery with a new, compatible battery to restore proper voltage.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

CECommunication Data ErrorCFControl FaultCP1Comparator 1 Limit Error
Source: Yaskawa GA500 Maintenance and Troubleshooting
View Official PDFSearch more codes in this manual