The failure of the valve positioner

The valve positioner failures of the deterioration of the characteristics of the Cascade vice ring. Positioner in a vice ring of the cascade control system, therefore, have a certain ability to adapt. The valve positioner fault performance for the control system instability, stuck.high pressure hydraulic fittings
The positioner cam inappropriate failure caused
The valve positioner cam failure phenomenon caused by improper control valve flow characteristics caused by improper failure phenomenon is similar to the control system unstable or slow-moving phenomenon in different operating point. The Troubleshooting method is according to the controlled object properties and control valve flow characteristics to choose the right the valve positioner cam, cam is installed need to debug.hose adapters