APV400 Intelligent Valve Positioner

Product Description

APV400 Intelligent Valve Positioner operates on the principle of piezoelectric valves and is equipped with HART communication protocol. It effectively converts a 2-wire 4 to 20 mA control signal into pneumatic output for the actuator, making it suitable for both pneumatic linear actuators and rotary actuators. This functionality enables precise positioning of the valve according to predetermined settings. The positioner features a compact and modular design that offers high cost-effectiveness. Its self-tuning capability for control parameters, combined with excellent adaptability, significantly reduces setup time while ensur ing optimal control performance.

Product Catalogue

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Features

Adaptive predictive control algorithm for faster response and more precise control
Automatic detection of valve lower and upper limits, optimizing valve control parameters to enhance accuracy
Dot matrix LCD display with multi-language support, ro tatable by 180° for easy observation. Equipped with four configuration buttons for local valve control and settings adjustments
Supporting parameter configuration for split range, characteristic curves, stroke range and direction, tight closure, dead zone, control parameters, digital input, alarm and fault outputs, and more
Diagnostic capabilities include leakage detection, partial stroke testing, upper and lower limit monitoring, pressure and temperature diagnostics, stroke accumulation, directional change counts, and piezoelectric operation monitoring
IDM software allows setup and calibration of valve accessories, with status monitoring and alarm tracking
Compatible with HART 5 and HART 7 communication protocols
Including 1 isolated digital input and 2 dry contact inputs
Digital output with electric isolation provides alarm or fault notifications
Electrically isolated position feedback block outputs 4 to 20 mA position feedback
Optional "fail last" function ensures operational stability during power, gas, or signal failure
Equipped with surge protection for enhanced reliability

Technical Data

Type

Piezoelectric
Signal

2-wire 4 to 20 mA DC input, optional HART 5 and HART 7, 4 to 20 mA feedback output
Protection Grade

IP66
Explosion-proof

Exia IIC T4 … T6 Ga, Exdb IIC T4 … T6 Gb
Three-break Fail Last

Optional valve manifolds can make valve fail last in case of power failure, gas failure, and signal failure
Surge

Surge protection function
Diagnostic Function

Leakage detection, partial stroke test, upper limit and lower limit monitoring, pressure detection diagnostic, temperature diagnostic, stroke accumulation, direction change times, piezoelectric operation times, etc.