Answer
Valve position oscillation is usually caused by one or more of the following factors:
- Unstable air supply pressure
- Pipeline or valve vibration
- Dead zone setting too small
- Excessive actuator friction
- Control gain set too high
We recommend performing automatic tuning again and checking the air supply quality and mechanical condition of the actuator.
If the issue continues, please contact our technical support team with valve and actuator details for further analysis.