Technical Specifications Instrument air supply pressure 1.4‑7 bar. Pneumatic output pressure matches standard actuator requirement. Operating temperature ‑40 ℃ to +85 ℃. Weight approximately 0.24 kilogram.
Functional Features Converts electrical control signal into proportional pneumatic output pressure. Realizes air pressure amplification for actuator driving. Built‑in air channel filtering structure. Compact integrated pneumatic channel layout.
Application Scenarios Pneumatic spare‑part for ABB intelligent valve positioners. Used for field maintenance and component replacement of industrial control valves.
Performance Parameters Fast pneumatic response speed. Stable proportional pressure output. Resists pollution from minor impurities in instrument air.
Material Composition High‑strength aluminum alloy valve block body. Precision pneumatic relay components, sealing rubber parts, filter element assembly.
Structural Characteristics Integrated block‑type structure. Equips air supply inlet and pneumatic output ports. Mechanical fixing holes for installation inside positioner.
Working Principle Electrical drive signal from positioner control board acts on internal pneumatic relay. Instrument air passes through internal air channel and pressure adjustment components. Corresponding proportional pneumatic pressure is output to pneumatic valve actuator to push valve stem movement.
Installation Requirements Cut off instrument air supply before replacement. Mount VBS01 valve block module inside positioner housing and fasten fixing screws. Ensure pneumatic interface sealing condition. Restore instrument air supply. Execute positioner auto‑calibration after assembly.
Usage Notes Keep instrument air supply clean and dry. Inspect pneumatic sealing surface during replacement. Perform auto‑calibration after every component replacement. Avoid mechanical impact on precision pneumatic relay parts.
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