The Bray Series 6A smart electro-pneumatic valve positioner is designed for rotary single-acting or double-acting pneumatic actuators. It uses a 4-20 mA control signal and supports HART, Profibus PA, and FOUNDATION Fieldbus communication. The product is mounted in accordance with VDI/VDE 3845 (NAMUR), has a supply pressure range of 1.4-7 bar, and is suitable for valve position control and supply failure monitoring of pneumatic valves in hazardous locations, high-vibration environments, and outdoor applications.
Series 6A Smart Positioner Product Image
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Bray Series 6A Intelligent Electro-Pneumatic Valve Positioner (Rotary Pneumatic Actuators)
Intelligent electro-pneumatic valve positioner for valve position control of rotary pneumatic actuators, with HART communication support.
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After-sales support
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Specifications
- Port Connection
- 1/4" NPT or G1/4
- Communication Protocols
- HART, Profibus PA, Foundation Fieldbus
- Control Signal
- 4-20 mA
- Protection Rating
- NEMA 4, 4X, IP66
- Explosion Protection Rating
- ATEX/FM/CSA EEx ia/ib, ATEX/FM EEx d
- Operating Temperature Range
- -22°F (-30°C) to +176°F (+80°C)
- Mounting Standard
- VDI/VDE 3845 (NAMUR)
- Supply Pressure Range
- 20-102psi (1.4-7 bar)
- Enclosure Material
- Glass-fiber-reinforced polymer, aluminum, stainless steel
- Supply Medium
- Clean, dry gas
- Product Certifications
- ATEX, BV, CCC, CSA, FM, IECEx, InMetro, TR CU, UA.TR.089
Application scenarios
Valve Position Control for Rotary Pneumatic Actuators in Hazardous Areas
Used for valve position control of rotary single-acting or double-acting pneumatic actuators in process areas with hazardous-area requirements. The 6A series offers intrinsically safe and explosion-proof configurations, with support for ATEX, FM, CSA, IECEx, and corresponding hazardous-area protection ratings.
Pneumatic Valve Positioning Control Under High-Vibration Conditions
Used for pneumatic valve actuators subject to significant vibration. The 6A series is equipped as standard with a friction clutch locking mechanism for high-vibration applications, providing stable positioning control for rotary single-acting or double-acting actuators.
Pneumatic Valve Nodes Requiring Diagnostics and Supply Air Failure Alarms
Used for pneumatic valves and actuators requiring continuous diagnostics and maintenance monitoring. The 6A series provides corrective and preventive maintenance self-diagnostics and can monitor supply air failures and issue local or remote alarms.
Outdoor-Protected Pneumatic Valve Actuators
Used for pneumatically actuated valves installed outdoors. The 6A series offers NEMA 4, NEMA 4X, and IP66 protected models for valve positioning control requiring protection against weather, water vapor, and dust.
Selection points
Online Adaptive Control
The positioner continuously optimizes control behavior and response time during operation to adapt to changes in pipeline media pressure.
Continuous Self-Diagnostics and Air Supply Failure Alarm
The positioner provides continuous self-diagnostics for corrective and preventive maintenance and monitors air supply failures. Fault alarms can be displayed on the local LCD and sent to a remote control panel.
Support for Multiple Field Communication Protocols
In addition to the 4-20 mA control signal, the product supports HART, Profibus PA, and Foundation Fieldbus communication protocols.
Compatibility with Rotary Single- and Double-Acting Pneumatic Actuators
The positioner is suitable for rotary single- and double-acting pneumatic actuators, supports direct and reverse applications, and uses the VDI/VDE 3845(NAMUR) mounting standard.
Installation & maintenance notes
Install Rotary Actuators in Accordance with the NAMUR Standard
This positioner is designed for rotary single- and double-acting pneumatic actuators. Installation must comply with the VDI/VDE 3845(NAMUR) standard, with the mounting interface and drive connection between the positioner and actuator correctly matched.
Use Clean, Dry Gas Within the Specified Pressure Range
The supply medium must be clean, dry gas, and the supply pressure must remain within the range of 20-102psi(1.4-7bar).
Match the Hazardous-Area and Protection Certification Configuration
Before installation, confirm that the site conditions or hazardous-area requirements match the protection rating and explosion-proof certification configuration of the actual 6A positioner.
FAQ
What is the operating principle of the Series 6A Smart Positioner?
Series 6A achieves precise valve positioning through online adaptive control, minimizing power consumption while automatically optimizing travel time and control parameters according to changes in pipeline media pressure.
What are the key technical selection considerations for this positioner?
Consider port specifications, communication protocols (such as HART, Profibus PA, and Foundation Fieldbus), control signal type (4-20 mA/digital communication), explosion protection rating, and mounting standards (VDI/VDE 3845/NAMUR) to meet site requirements.
What diagnostic and maintenance functions does Series 6A provide?
It provides corrective and preventive self-diagnostics, continuously performs and records diagnostics, and includes an internal air supply monitor that alarms on supply failures and displays status on the local LCD or remote control panel.
What advantages does this positioner offer in extreme environments?
Its explosion-proof/waterproof enclosure complies with multiple international and industry certifications, making it suitable for hazardous locations and harsh environments. An integrated vibration-resistant locking mechanism supports high-vibration applications.
How are local position adjustment and remote command override performed?
After removing the enclosure cover, local manual position adjustment can be performed. Buttons can then override the remote command signal, ensuring on-site valve position control when required.
Documents
Product Brochure - Series 92/93 Pneumatic Actuators and AccessoriesProduct information · EnglishProduct Brochure - Actuators and ControlsProduct information · EnglishProduct Brochure - Valve Automation Center (VAC)Product information · EnglishIOM Manual - Series 6A PositionersManual · EnglishQuick Start Guide - Series 6A Electrical Positioner Quick Start GuideProduct information · ChineseQuick Start Guide - Series 6A Posicionador Electroneumático Guía De Inicio RápidoProduct information · EnglishQuick Start Guide - Posicionador Digital 6A Inteligente Guia De Início RápidoProduct information · EnglishQuick Start Guide - Series 6A Smart PositionerProduct information · EnglishReference Guide - Intrinsic Safety Reference GuideProduct information · EnglishTechnical Sales Manual - Series 6A Smart PositionerManual · EnglishSales Data Sheet - elektropneumatické pozicionéry typ 6AProduct information · EnglishSales Data Sheet - Series 6A Electro-Pneumatic PositionerProduct information · EnglishSales Data Sheet - Hazardous Area Control DevicesProduct information · EnglishSales Data Sheet - Posicionadores Electroneumáticos Serie 6AProduct information · EnglishRecommended Specification - Series 6A PositionersProduct information · English