METSONELES® ND9000 INTELLIGENT VALVE CONTROLLER

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 pneumatic supply, the micro controller (μC) reads the input signal,

position sensor (α), pressure sensors (Ps, P1, P2) and spool position 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 current based on the information from the input signal and from the

sensors. The changed current to the PR changes the pilot pressure 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.

TECHNICAL SPECIFICATIONS

ND9000 INTELLIGENT VALVE CONTROLLER

General

Loop powered, no external power supply required.

Suitable for rotary and linear valves.

Actuator connections in accordance with VDI/VDE 3845 and IEC

60534-6 standards.

Flush mounting on selected actuators

Action: Double or single acting

Travel range: Linear; 10–120 mm / 0.4-4.7 in

rotary; 45–95 degrees. Measurement 

range 110° with freely rotating 

feedback shaft.

Environmental influence

Standard temperature range:

-40° – +85 °C / -40° – +185 °F

Arctic temperature range: -53° – +85 °C / -64° – +185 °

Influence of temperature on valve position:

0.5 % /10 °K

Influence of vibration on valve position:

< 1 % under 2g 5–150 Hz,

1g 150–300 Hz, 0.5g 300–2000 Hz

Enclosure

Material: ND9100: Anodized aluminum alloy 

and polymer composite

ND9200: Anodised aluminum alloy

and tempered glass

ND9400: Stainless steel and polymer

composite 

ND9300: Stainless steel 

Protection class: IP66, Nema 4x

Pneumatic ports: G 1/4 (ND9100)

1/4 NPT (ND9200, ND9300 & ND9400)

Cable gland thread: M20x1.5 (ND9000 )

1/2 NPT (ND9000E2, ND9000U)

Weight: 1.8 kg / 4.0 lbs (ND9100)

3.4 kg / 7.5 lbs (ND9200)

5.6 kg / 12.4 lbs (ND9400)

8.6 kg / 19.0 lbs (ND9300)

Mechanical and digital position indicator visible through main

cover, not applicable to ND9200E2 and ND9300.

Special corrosion resistant design or stainless steel housing available as an option for demanding environment.

Pneumatics

Supply pressure: 1.4–8 bar / 20–115 psi

Effect of supply pressure on valve position:

< 0.1 % at 10 % difference in inlet 

pressure

Air quality: Acc. to ISO 8573-1

Solid particles: Class 5 (3 – 5 μm 

filtration is recommended) 

Humidity: Class 1 (dew point 10 °C/ 

18 °F below minimum temperature 

is recommended)

Oil class: 3 ( or < 1 ppm)

Capacity with 4 bar / 60 psi supply:

5.5 Nm3/h / 3.3 scfm (spool valve 2)

12 Nm3/h / 7.1 scfm (spool valve 3)

38 Nm3 /h /22,4 scfm (spool valve 6)

Consumtion with 4 bar / 60 psi supply in steady state position:

< 0.6 Nm3/h /0.35 scfm 

(spool valve 2 & 3)

< 1.0 Nm3/h / 0.6 scfm (spool valve 6)

Electronics

HART

Supply power: Loop powered, 4–20 mA

Minimum signal: 3.6 mA

Current max : 120 mA

Load voltage: up to 9.7 VDC/20 mA 

(corresponding 485 Ω)

Voltage: max. 30 VDC

Polarity protection: -30 VDC

Over current protection: active over 35 mA

Profibus PA and FOUNDATION fieldbus

Supply power: voltage 9–32 VDC, reverse polarity 

protection

Max basic current: 17.2 mA

Quiescent Current Draw: 16 mA 

Fault current (FDE): 3.9 mA

FOUNDATION fieldbus function block 

execution times

AO 20 ms

AI 20 ms

PID 20 ms

DO 20 ms

DI 15 ms

IS 15 ms

OS 15 ms

Performance with moderate constant-load actuators 

Dead band: ≤ 0.1 %

Hysteresis: < 0.5 %

Local User Interface (LUI) functions □ Local control of the valve

□ Monitoring of valve position, target position, input signal, temperature, supply and actuator pressure difference

□ Guided-startup function

□ LUI may be locked remotely to prevent unauthorised access

□ Calibration: Automatic / Manual linearization

□ 1-point calibration

□ Control configuration: aggressive, fast, optimum, stable, maximum stability

□ HART version configuration: HART 6 or HART 7

□ Configuration of the control valve

□ Rotation: valve rotation clockwise or counter-clockwise to close

□ Dead Angle

□ Low cut-off, cut-off safety range (default 2 %)

□ Positioner fail action, open/close

□ Signal direction: Direct/reverse acting

□ Actuator type, double/single acting

□ Valve type, rotary/linear

□ Language selection: English, German and French

Position transmitter (optional)

Output signal: 4–20 mA (galvanic isolation; 

600 VDC)

Supply voltage: 12–30 VDC

Resolution: 16 bit / 0.244 μA

Linearity: < 0.05 % FS

Temperature effect: < 0.35 % FS

External load: max 0–780 Ω

max 0–690 Ω for intrinsically safe

Ex ia IIC T6 Ui ≤ 28 V