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Foundation Fieldbus digital valve positioner

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article image Fast, easy and accurate calibration.

FLOWSERVE has introduced the Logix 3400IQ Foundation Fieldbus digital valve positioner featuring a new FISCO-compliant user interface board, improved potentiometer, piezoelectric technology, and host interoperability to provide fast, easy and accurate calibration.

Compatible with any HART or Foundation Fieldbus distributed control system (DCS), the Logix 3400IQ controls the position of both single and double-acting valve actuators with linear or rotary mountings, and is suitable for a wide variety of applications, including oil and gas and chemical processing.

The Logix 3400IQ offers fast commissioning, calibration, tuning, and setup in about two minutes from the local user interface. All parameters from the user interface are automatically updated in the Transducer Block, eliminating the need to enter Function Blocks to perform a simple stroke calibration.

Local setup and calibration does not require a link to a host controller, PC, or handheld device. With a low 9V dc supply current and 45psi (min) air supply for any valve/actuator platform, the 3400IQ makes Foundation Fieldbus installation easy and straightforward.

An onboard QUICK-CAL button, DIP switches, Jog buttons, and a variable gain selector configure the valve and positioner. A blink code list displays valve status updates and confirms calibration at a glance using highly visible LEDs, enabling users to easily determine a valve or actuator is functioning properly so they can quickly diagnose any problems.

Tuning can be changed without re-calibrating the positioner, which saves time and increases ease-of-use. An improved potentiometer allows for wider control of valve position by adding 30 degrees of rotation and code. Self-adjustment from 30 to 130 degrees of rotation and automatic scaling provide accurate, automated positioning with optimal resolution.

The 3400IQ's new driver module takes advantage of piezoelectric technology for low power and air consumption. With only one moving part and proportional valve action - not just on and off - piezoelectric technology gives the 3400IQ excellent reliability, easy assembly, faster response, and a compliance voltage below 10V.

The Flowserve Logix 3400IQ is certified to meet many current operating standards, including FM, CSA, ATEX, FISCO, and the latest Foundation Fieldbus interoperability testing, ITK4.6. The positioner is compatible with most DCSs, including those from Honeywell, Emerson, Invensys, Yokogawa and Rockwell. Others, such as ABB, are also currently being tested.

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