Signal level monitoring
SEW Eurodrive · MOVIDRIVE system
What does F13.8 mean?
An error occurred while monitoring the signal level from Encoder 1, where the signal vector exceeded its permitted limit. This could indicate an issue with the encoder's physical mounting position affecting its signal output or data integrity.
Common Causes
- Incorrect mechanical mounting or loose coupling of Encoder 1 to the motor shaft, causing unstable signal generation.
- Vibration or shock impacting Encoder 1 beyond its specified operating limits, leading to signal instability.
- Intermittent electrical connection or poor shielding on Encoder 1 cable leading to brief signal excursions outside limits.
- Faulty Encoder 1 sensor element (e.g., resolver windings, optical disc) causing inconsistent signal output.
- Parameter misconfiguration in the drive's encoder monitoring block (e.g., P6-10 Signal monitoring window) set too strictly.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect Encoder 1's mechanical mounting for tightness, alignment, and absence of excessive vibration.
- 2
Monitor Encoder 1's raw signal output (e.g., sine/cosine) on an oscilloscope to detect vector anomalies.
- 3
Check all Encoder 1 cable connections (e.g., X11) for secure termination and verify shield integrity.
- 4
Review the drive's encoder monitoring parameters (e.g., P6-10) to ensure appropriate limits are set for the application.
- 5
If using a resolver, check the resistance values of the primary and secondary windings against the manufacturer's specifications.