Identification Run Failure

What does 57 mean?

The motor identification run failed to complete successfully. This can occur if the motor is not properly connected, if there's mechanical load on the shaft during the run, or if the start command is prematurely removed. An incomplete identification run means the drive may not have optimal motor parameters.

• Mechanical load connected to the motor shaft during the identification run (the motor must be uncoupled or free-spinning).
• Incorrect motor nameplate parameters (e.g., P2.4.1.1 for rated power, P2.4.1.2 for rated frequency, P2.4.1.3 for rated speed, P2.4.1.4 for rated voltage) entered into the drive.
• Motor not connected properly to the drive's output terminals (U, V, W) or an open phase condition exists in the motor cabling.
• Insufficient motor capacity or incorrect drive sizing for the motor being identified.
• Internal motor fault such as a winding short or open circuit preventing proper identification.

Click steps to track your progress.

1. 1

   1. Ensure the motor is completely uncoupled from any mechanical load or is free to rotate without resistance before initiating the identification run.

2. 2

   2. Verify all motor nameplate data (rated power, current, voltage, frequency, speed - P2.4.1.1 to P2.4.1.5) is accurately entered into the drive's parameters.

3. 3

   3. Check the motor cabling from the drive's output terminals (U, V, W) to the motor connection box, ensuring all phases are connected and secure.

4. 4

   4. Perform a motor winding resistance test across phases U-V, V-W, and W-U using a multimeter to detect open circuits or significant imbalances.

5. 5

   5. Ensure the drive's output current limit (e.g., P3.2.1.1) is sufficient for the motor's rated current during the identification sequence.

6. 6

   6. Confirm the motor's temperature is within operating limits, as excessive temperature can affect winding resistance readings.