Encoder Fault

What does 43 mean?

This fault indicates a problem with the encoder signals, with subcodes specifying whether channel A (1), channel B (2), or both channels (3) of Encoder 1 are missing. Other causes include reversed encoder direction (4) or a missing encoder board (5). This directly impacts speed and position feedback for the drive.

• The motor encoder is not providing valid feedback signals.
• Encoder cable disconnected or damaged.
• Encoder internal failure or misalignment.

Click steps to track your progress.

1. 1

   Inspect the encoder cabling for damage, proper shielding, and ensure all connections to the drive or option board are secure.

2. 2

   Verify the encoder board is correctly installed in its slot and free from damage.

3. 3

   Check the encoder frequency output in open-loop mode to confirm signal presence and integrity, comparing it against expected values for motor speed.