AVP703 Smart Valve Positioner 700 Series with FOUNDATION fieldbus Specification
■The model AVP703 is a FOUNDATION fieldbus equipped smart valve positioner.
■The model AVP703 controls and manages the valve through Fieldbus.
■It is equipped with a pressure sensor, along with PID, DI, and various other function blocks, which contribute to realizing better diagnosis of control valves, together with safer and more stable plant operation. The positioner's local user interface (LUI) makes setup and adjustment easier, resulting in more effective maintenance.
●FEATURES:
■Improved valve diagnosis
▲Because the pressure sensor measures positioner output air pressure, the following valve diagnostic functions have been improved.
◆Detection of abnormalities associated with valve closing, the actuator, and friction.
◆Valve Signature (based on the relationship between the valve travel and pressure of the actuator)
◆Positioner air circuit diagnosis
■Easy adjustment and setup
▲The following can be easily adjusted or set up using the local user interface (LUI), which consists of an LCD and operation buttons. Since the operation buttons are isolated from the positioner, the positioner can be used in an explosive atmosphere.
◆Auto-setup (auto-adjustment)
◆Zero/span adjustment
◆Supply bypass switching
◆Control parameter configuration
■Single model for multiple specifications
▲The model AVP703 settings can be changed without any replacement of changing of parts. A single model can be modified to suit any application without any parts change.
◆Flow characteristic: Linear, EQ%, Quick opening or user customized characteristics
◆Actuator type: Double or single acting actuator
■Easy maintenance
▲Because the electric circuits are completely separated from the pneumatic circuit, maintenance work on the pneumatic circuit at the work site is easy.
▲In addition, the pilot component has an auto/manual switch. Thus, even if there is no electrical signal, a valve operation check can be conducted.
▲(However, in the case of a double-acting actuator, the switch cannot be used.)
■Fieldbus Functions
▲Transducer Block
◆Positioner Transducer Block (FF-906 compliant)
▲Link master function
◆This device supports Link Active Schedule function for control of fieldbus communication. However, when the product is used with an ABB system, the link master function cannot be used. In that case use the product as a BASIC device.
▲Alarm function
◆Alarm functions specified by FOUNDATION fieldbus specifications are supported, such as various high or low alarms, block alarm notices, etc. Alarms are output in compliance with NAMUR NE107.
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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Aug. 2020 |
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12th edition |
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SS2-AVP703-0100 |
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1.7 MB |
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