VPPX valve increases process quality

Written by: Tom Austin-Morgan | Published:

Festo has launched the VPPX, a proportional valve with an external sensor input that offers users improved performance, flexibility and process quality. The valve is a proportional integral derivative controller suited for use in industrial control systems found in process, packaging and water and wastewater applications.

The incorporation of an external sensor, means friction, hysteresis and leakage are effectively cancelled out which enables engineers to build faster and more accurate machines and systems, while enhancing the quality and efficiency of their processes. Time savings can also be made with the sensor integrated into the system.

The VPPX valve can be programmed using Festo Configuration Tools (FCT) and the user can select the control circuit (internal/external), the control behaviour (direct/inverted), the setpoint value, actual value and sensor signals (current/voltage).Previously, users had to specify whether the control signals were provided as current or voltage when designing the system.Now, users can decide at the last minute how the signal should be transferred to the control system.

The setpoint value, initial pressure and external sensor's signal can be viewed in real time on the oscilloscope, and parameters can be adjusted for the optimum control characteristics, with set values recorded for future use.

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