Program error

What does PER mean?

This fault indicates an internal error within the drive's operating program or firmware. This is a critical internal software issue. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. A program error can lead to unpredictable drive behavior and potential system instability or damage.

• Corrupted firmware image due to an interrupted update process or power fluctuation during write operation.
• Internal hardware malfunction (e.g., faulty memory chip) preventing proper firmware execution.
• Software bug within the drive's operating system, potentially triggered by a specific sequence of operations.
• Electromagnetic interference (EMI) disrupting internal data buses or memory access.
• Overheating of internal components leading to unstable operation.

Click steps to track your progress.

1. 1

   Cycle power to the drive (turn off and on) and observe if the fault persists.

2. 2

   Backup all user parameters (P0-01 to P9-99) to an external tool if possible.

3. 3

   Attempt to re-flash the drive's firmware using the latest version provided by the manufacturer.

4. 4

   Perform a factory reset of all parameters (e.g., P9-97 = 1) and then reload a known good parameter set.

5. 5

   Check the drive's internal temperature (e.g., parameter P0-15) and verify proper cooling fan operation.