Download SMART VALVE POSITIONER 4 to 20 mA

SMART VALVE POSITIONER
4 to 20 mA
smar
B83
DESCRIPTION
The FY290 microprocessor based positioner provides
fast and accurate positioning of diaphragm or cylinder
actuators. The FY290 produces a pressure output as
required to position a control valve according to a 4 to
20mA input signal supplied by a controller.
The FY290 is compact and easy to maintain and adjust.
Local calibration and parameter setting are done without
external devices.
Reliable and Flexible
Elimination of many mechanical parts seen in other positioners
has a number of advantages. Higher reliability since there
are less parts that wear, safer since there are less moving
parts, more accurate since there is less deadband from mechanical imprecision.
Position sensing is done without any mechanical contact virtually eliminating wear and tear and subsequent degradation. FY290 directly senses longitudinal or rotary movement
based on the Hall effect.
Valve characteristics, action, damping, etc. are altered in software instead of changing mechanical cam and spring. Changing damping, action or characteristics between linear, equal
percentage, hyperbolic (quick opening) makes the FY290 extremely flexible.
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smar
B84
Compact and modular design.
Low air Consumption.
Easy installation.
Direct non-contact position sensing.
Operate with rotary or linear motion, single or double
acting pneumatic actuators.
Easy adjustment and parameter settings with local
adjustment and display.
Weather proof, explosion proof and intrinsically safe.
Flow Characteristics change with software cams.
OPERATION
Output Module
On-Board Parameters
The main parts of the output module are the pilot, servo, Hall
Effect sensor and the output control circuit.
Easy local adjustment allows operator easy calibrating and
parameter setting without external devices. Parameters and
special functions are selected using a magnetic tool.
The FY290 CPU produces an electronic setpoint signal for
the control circuit. The control circuit receives an actual valve
position feedback signal from a Hall Effect sensor.
Calibration of the open and close position of the actuator is
automatic. If another position is required the fine calibration
of zero point and travel is possible using a magnetic tool.
The pneumatic part is based on the well known and widely
used pilot tube and spool valve technology.
Gain and travel time are locally adjustable allowing the optimization of the positioner for the process conditions.
A piezoelectric disk is used as flapper in the pilot stage. The
flapper is deflected when a voltage is applied by the control
circuit. If a change in position is demanded, the flapper deflects. A small stream of air flowing through the nozzle is
changed, causing a change in pressure in the pilot chamber.
This is called the pilot pressure. For a certain section used for
the operation, the pilot pressure response is linear with the
flapper deflection.
FY290 has combined all functions in a single unit:
• Direct or reverse action.
• Single or double acting actuators.
• Linear and rotary motion actuators.
• Split range.
• Flow characterization:
- Linear.
- Equal percentage 1:50.
- Hyperbolic 1:50.
The pilot pressure is far too low, and has no flow capacity and
must therefore be boosted. This is done in the servo section,
which acts as a transducer. The servo section has one diaphragm on the pilot chamber side, and another smaller diaphragm on the spool chamber side. The pilot pressure applies a force to the pilot side diaphragm which at steady state
will be equal to the force that the spool valve applies on the
smaller diaphragm.
The mounting set for rotary actuators complies with
VDI/VDE 3845.
When a change in position is demanded, pilot pressure increases or decreases as explained for the pilot stage. A
change in pilot pressure forces the spool valve up or down
changing the output 1 and output 2 pressures until the desired position is reached.
FLOW
RESTRICTION
Rotary Magnet
PIEZO FLAPPER
The mounting set for linear actuators complies with
IEC534-6 (NAMUR).
NOZZLE
PILOT
DIAPHRAGM
ø20...35 (0.79...1.38)
PILOT CHAMBER
2 CLAMPS
Linear Magnet
65
(2.56)
SPOOL
DIAPHRAGM
VENT 2
OUTPUT 2
AIR SUPPLY
OUTPUT 1
SPOOL
VENT 1
SPRING
B85
smar
TECHNICAL CHARACTERISTICS
Functional Specifications
Performance Specifications
Travel
Sensitivity
£ 0.1% F.S.
Linear Motion: 3 - 100 mm.
Rotary Motion: 30 - 120° Rotation Angle.
Extended Linear Motion: 100 - 1000 mm.
Repeatibility
£ 0.1% F.S.
Input Signal
Hysteresis
£ 0.1% F.S.
4-20 mA, 2-wire.
Power
Consumption
Supplied by the 4-20 mA current. No external supply required.
0.25 Nm3/h (0.15 SCFM) at 1.4 bar (20 psi) supply.
0.70 Nm3/h (0.40 SCFM) at 5.6 bar (81 psi) supply.
Voltage drop
11 Vdc max / 20 mA (equivalent to 550W).
Output Capacity
Minimum current
46.7 Nm3/h (28 SCFM) at 5.6 bar (80 psi) supply.
3.8 mA.
Ambient Temperature Effect
0.8%/ 20 °C of span.
Reverse Polarity Protection
No damage occurs from reversal of normal supply current
(4-20 mA) or from misapplication of up 50 mA.
Supply Pressure Effect
Negligible.
Output
Vibration Effect
Output to actuator 0 – 100% supply air pressure.
Single or double-action.
± 0.3 % /g of span during the following conditions:
5-15 Hz at 4 mm constant displacement.
15-150 Hz at 2g.
150-2.000 Hz at 1g.
Reference SAMA PMC 31.1 – 1980, Sec. 5.3, Condition 3,
Steady State.
Pressure Supply
1.4 - 7 bar (20-100 psi).
Free of oil, dust and water.
Indication
Electro-Magnet Interference Effect
4½-digit LCD indicator.
Designed to comply with IEC 801 and European Standards
EN50081 and EN50082.
Hazardous Location Certification
Explosion proof, weather proof and intrinsically safe from
CEPEL, FM, CSA, NEMKO and DMT (pending).
Physical Specifications
Temperature Limits
Operation:
Storage:
Display:
Electrical Connection
-40 to 85 °C (-40 to 185 °F).
-40 to 90 °C (-40 to 194 °F).
-10 to 60 °C (14 to 140 °F) operation
-40 to 85 °C (-40 to 185 °F) without damage.
½ - 14 NPT, Pg 13,5 or M20 x 1,5.
Pneumatic Connections
Supply and output: ¼ -18 NPT.
Gage: 1/ 8 - 27 NPT.
Humidity Limits
0 to 100% RH.
Material of Construction
Flow Characterization
Linear, Equal Percentage, Quick Opening.
Injected low copper aluminum with polyester painting or 316 Stainless Steel housing, with Buna N O-Rings on cover (NEMA 4X, IP
67).
Gain
Weight
Through software. Locally adjustable.
Without display and mounting bracket: 2.7 kg.
Add for digital display: 0.1kg.
Travel Time
Through software. Locally adjustable.
Actual Position Sensing
Magnet (Non-contact)
Hall Effect
smar
B86
ORDERING CODE
MODEL
FY290
BFY
SINGLE ACTING SMART VALVE POSITIONER
CODE
Digital Local Indicator
0
1
Without Digital Indicator
With Digital Indicator
CODE
Without Bracket
With Bracket
0
1
CODE
0
A
B
Type of Actuator (Not Included)
Rotary-Single Action
Rotary Double Action
Linear Stroke Up to 15 mm - Single Action
Linear Stroke Up to 15 mm - Double Action
Linear Stroke Up to 50 mm - Single Action
Linear Stroke Up to 50 mm - Double Action
Linear Stroke Up to 100 mm - Single Action
Linear Stroke Up to 100 mm - Double Action
Others Specify
CODE
ZZ
0
1
0
Without Magnet Mounting Bracket
Rotary
Linear up to 15 mm
Linear up to 50 mm
Linear up to 100 mm
Others - Specify
CODE
C
I
7
Z
Mounting Bracket Material
Carbon Steel Bracket
316 SST Bracket
Carbon Steel Bracket and Accessories in SST
Others Specify
CODE
Without Gage
With Gage - Input
With Gage - Output 1
With 2 Gages - Input and Output 1
With 2 Gages - Output 1 and 2
With 3 Gages
Others Specify
0
1
2
3
4
5
Z
-
Magnet Mounting Bracket
Indication Gage
CODE
0
Without Positioner Bracket
Universal Rotary
Universal Linear (Yoke and Pillar)
Linear - Yoke Type
Linear - Pillar Type
Others - Specify
0
1
2
3
4
Z
½ - 14 NPT
M20 X 1,5
Pg 13,5 DIN
1
2
3
4
5
6
7
8
Z
Positioner Mounting Bracket
CODE
Electrical Connections
CODE
1
0
1
2
3
4
Z
Note: A Digital Indicator is
necessary for calibration.
Mounting Bracket
CODE
FY290 -
BRACKET
/
*
BFY
-
1
2
C
/
Optional Items*
ZZ
Specify Actuador Model / Company
*
TYPICAL MODEL NUMBER
* Leave it blank for no optional items
Optional Items*
Special Options - Specify
TYPICAL MODEL NUMBER
* Leave it blank for no optional items
** Use separete ordering code
B87
smar
DIMENSIONS
Dimensions are mm (in)
Valve Positioner
SUPPLY
1/8” - 27 NPT
45
(1.77)
45
(1.77)
260
(10.24)
OUTPUT 1
SUPPLY
OUTPUT 2
1/4” - 18 NPT 1/4” - 18 NPT1/4” - 18 NPT
9
(0.35)
22
13
(0.87) (0.51)
39
(1.54)
ø83
(3.27)
113
(4.45)
46.5
(1.83)
ø69
(2.72)
55
(2.16)
39
(1.54)
ø24
(0.954)
ø50
(1.97)
6,5
(0.25)
ø21
(0.83)
OUTPUT 2
1/8” - 27 NPT
MOUNTING
HOLES FOR M6x1
SCREWS
(2 PLACES)
83
(3.27)
OUTPUT 1
1/8” - 27 NPT
Rotary Magnet
Linear Magnet
49.5
(1.95)
55
(2.17)
HOLE 6.3 (0.25)
(2 PLACES)
68
18
24
(0.94)
(0.71)
24
24
(0.94) (0.94)
(2.68)
53.3
(2.10)
22.5
(0.89)
33
(1.30)
smar
B88
15
(0.59)
A
TRAVEL
DIMENSION A
UP TO 15 mm (0.59)
UP TO 50 mm (1.97)
UP TO 100 mm (3.94)
44 mm (1.73)
109 mm (4.29)
185 mm (7.28)