Technical Specifications Instrument air supply pressure 1.4‑7 bar. High‑flow pneumatic output capacity. Operating temperature ‑40 ℃ to +85 ℃. Weight approximately 0.28 kilogram.
Functional Features Amplifies input pneumatic control signal flow capacity. Provides large‑flow pneumatic output for large‑size pneumatic actuators. Accelerates valve opening and closing movement speed. Integrated filter structure protects internal pneumatic components.
Application Scenarios Support spare‑part for ABB intelligent valve positioners matching large‑volume pneumatic actuators. Applied in petrochemical and chemical industry process control sites.
Performance Parameters High gas flow amplification capability. Fast pneumatic response shortens valve action time. Stable proportional pressure output characteristic.
Material Composition High‑strength aluminum alloy main body. Precision pneumatic valve components, wear‑resistant sealing rubber assemblies, built‑in filter element.
Structural Characteristics Modular block‑type structure. Equipped with pneumatic input port, air supply port and high‑flow output port. Reserved mechanical fixing holes.
Working Principle Low‑flow pneumatic control signal enters VBX01BA module. Internal pneumatic amplifier structure controls instrument air passage. High‑flow pneumatic pressure output is generated and transmitted to large‑volume pneumatic actuator to drive rapid valve movement.
Installation Requirements Shut off instrument air supply before replacement. Install VBX01BA module in designated mounting position and tighten fixing screws. Check sealing performance of each pneumatic connection port. Restore instrument air supply. Complete positioner automatic calibration procedure.
Usage Notes Instrument air supply must keep clean, dry and oil‑free. Inspect sealing parts condition during regular maintenance. Complete auto‑calibration after module replacement. Prevent mechanical collision to precision internal pneumatic parts.
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