F31117: Encoder TTL pulse fault

What does F31117 mean?

This fault indicates an issue with the encoder's TTL pulse signal, typically due to a problem with the cabling or the encoder itself.

• Incorrect connection of the encoder cable between the motor and the drive
• Faulty internal cable connections or poor cable shielding
• Incorrectly connected shielded ground cable
• Damaged motor encoder

Click steps to track your progress.

1. 1

   Check the signal cable between the motor and the drive (encoder cable) for correct connection, faulty internal contacts, poor shielding, or incorrect shielded ground connection.

2. 2

   Power on the system again and observe whether the fault still exists after verification.

3. 3

   If the fault persists, check the connection of the encoder interface.

4. 4

   If the fault still exists after these operations, professional replacement and maintenance are necessary as the motor encoder is likely damaged.