Speed Feedback Detected Without Directory for Operation

What does 15 mean?

This error indicates that the drive is receiving speed feedback signals from the motor, but there is no active command or 'directory' (run or direction command) for the motor to operate. This condition could signify unintended motor motion or a faulty control input causing spurious feedback.

• Drive receiving speed feedback despite no explicit run command being active.
• Faulty run command input circuit or a stuck contactor causing unintended motor activation.
• Unintended motor rotation due to external forces, mechanical issues, or leakage current.
• Faulty speed feedback device providing erroneous speed signals even at standstill.

Click steps to track your progress.

1. 1

   Verify that no run command signals are active at the drive input terminals (e.g., DI1, DI2) when the motor is commanded to be off.

2. 2

   Check for any external forces or mechanical conditions that could be causing the motor to rotate without command.

3. 3

   Inspect the speed feedback device (encoder) for proper operation and signal integrity, even when the motor is at standstill.

4. 4

   Review drive parameters related to zero speed detection and feedback monitoring thresholds.