Metso NELES ND9000 INTELLIGENT VALVE CONTROLLER

Metso NELES® ND9000 INTELLIGENT VALVE CONTROLLER

Metso's Neles ND9000 is a top class intelligent valve controller designed to operate on all control valve actuators and in all industry areas. It guarantees end product quality in all operating conditions with unique diagnostics and incomparable performance features. ND9000 is a reliable and future-proof investment with Metso FieldCare™ life-time support

KEY FEATURES

□ Benchmark control performance on rotary and linear valves 

 □ Reliable and robust design 

 □ Easy commissioning and operation 

 □ Safety; IEC 61508 compliant up to and including SIL 2 by TUV 

 □ Language selection: English, German and French 

 □ Local / remote operation □ Expandable architecture 

 □ Advanced device diagnostics including 

 □ Self-diagnostics 

 □ Online diagnostics □ Performance diagnostics 

 □ Communication diagnostics 

 □ Extended off-line tests □ Performance view 

 □ Online Valve Signature

Options

□ Interchangeable communication options: 

 □ HART 6 or 7 (H) □ FOUNDATION fieldbus 

 □ Profibus PA 

 □ Limit switches 

 □ Position transmitter (in HART only) 

 □ Full stainless steel enclosure 

 □ Exhaust adapter □ Remote mounting 

 □ Arctic version (up to -53 °C / -64 °F)

Total cost of ownership

□ Low energy and air consumption □ Future proof design allows further options at a reduced cost □ Optimized spares program minimizes spare part inventory □ Retro-fit to existing installations (Neles or 3rd party valves)

Minimized process variability

□ Linearisation of the valve flow characteristics □ Excellent dynamic and static control performance □ Fast response to control signal change □ Accurate internal measurements

Easy installation and configuration

□ Same device can be used for linear and rotary valves, double and single-acting actuators □ Simple fast calibration and configuration □ using Local User Interface (LUI) □ using FieldCare software in a remote location □ using Distributed Control System (DCS) asset man agement tools □ Extensive selection of mounting kits for 3rd party actuators □ Low power comsumption enables installation to all common control systems

Open solution

□ Metso is committed to delivering products that freely interface with software and hardware from a variety of manufacturers; ND9000 is no exception. This open architecture allows the ND9000 to be integrated with other field devices to give an unprecedented level of controllability. □ FDT and EDD based multi-vendor support configuration □ Support files for ND9000 are available from our internet pages, at www.metso.com/valves - choose the link: download center

Neles ND9000 in fieldbus networks

□ Approved interoperability □ Host interoperability ensured □ FOUNDATION fieldbus ITK version 6.1.2 certified □ Profibus PA profile version 3.0 PNO certified □ Easy to upgrade; by replacing the HART communication board with a fieldbus communication board □ Excellent maintainability with firmware download feature □ Advanced communication diagnostics □ Digital communication via the fieldbus includes not only the set point, but also the position feedback signal from the position sensor. No special supplementary modules for analog or digital position feedback are needed when using the fieldbus valve controller. □ Back up LAS functionality available in FOUNDATION fieldbus envi roment □ Input selector and output splitter blocks available in FOUNDATION fieldbus devices allowing advanced distributed control □ Standard function blocks enables the freedom to use the ND9000 intelligent valve controller in either continuous or on off control applications □ Open and close information is directly available via the fieldbus □ Open and close detection is based on either position measure ment (soft limit switch) or mechanical limit switch information

ND9000 mounting on actuators and valves

□ Mounted on single and double acting actuators □ Both rotary and linear valves □ Ability to attach options to electronics and mechanics later □ 1-point calibration feature enables mounting without disturb ing the process

Product reliability

□ Designed to operate in harsh environmental conditions □ Rugged modular design □ Excellent temperature characteristics □ Vibration and impact tolerant □ IP66 enclosure □ Stainless steel enclosure (ND9300 and ND9400) □ Protected against humidity □ Maintenance free operation □ Resistant to dirty air □ Wear resistant and sealed components □ Contactless position measurement

Predictive maintenance

□ Easy access to collected data with Metso FieldCare software □ Unique Online Valve Signature to detect valve friction even more accurately. □ Performance view with report, which gives guidelines for rec ommended actions. □ Logical trend and histogram collection □ Information collected during process uptime □ Extensive set of off-line tests with accurate key figure calcula tions □ Fast notifications with on-line alarms □ Condition monitoring tool available □ Real time monitoring of valve control parameters

TECHNICAL DESCRIPTION

The ND9000 is a 4–20 mA or fieldbus powered microcontroller based intelligent valve controller. The device contains a Local User Interface (LUI) enabling local configuration. A PC with Field Care software can be connected to the ND9000 itself or to the control loop. The powerful 32-bit microcontroller controls the valve position. The measurements include: □ Input signal □ Valve position with contactless sensor □ Actuator pressures, 2 independent measurements □ Supply pressure □ Spool valve position □ Device temperature Advanced self-diagnostics guarantees that all measurements operate correctly. After connections of electric signal and pneu matic supply, the micro controller (μC) reads the input signal, position sensor (α), pressure sensors (Ps, P1, P2) and spool posi tion sensor (SPS). A difference between input signal and position sensor (α) measurement is detected by control algorithm inside the μC. The μC calculates a new value for prestage (PR) coil cur rent based on the information from the input signal and from the sensors. The changed current to the PR changes the pilot pres sure to the spool valve. Reduced pilot pressure moves the spool and the actuator pressures change accordingly. The spool opens the flow to the driving side of the double diaphragm actuator and opens the flow out from the other side of the actuator. The increasing pressure will move the diaphragm piston. The actuator and feedback shaft rotate. The position sensor (α) measures the rotation for the μC. The μC using control algorithm modulates the PR-current from the steady state value until the new position of the actuator, according to the input signal, is reached