Program error
Lenze · SHB4800/4900
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.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Check for external influences: Look for unusual electrical noise, voltage fluctuations, or environmental stress.
- 4
Consider a firmware update: If a newer firmware version is available, updating it might resolve known program bugs.
- 5
Contact manufacturer support: If the error persists, it likely indicates a fundamental internal drive issue requiring expert diagnosis or replacement.