PI-Air type WV-121 Pneumatic cylinder actuator with positioner PI-Air WV-121 High actuating force combined with small space requirement Powerful and compact built unit Zero adjustment easy accessible from the outside of the positioner Wide selection of consoles for different mounting arrangements Applications The Pneumatic Cylinder actuator is used for operating Wind boxes, Inlet Guiding Vanes, Dampers, Valves, Throttles etc., and generally where air is used as acting force and the control signal is air. Construction It is a powerful, compact built unit with Zero adjustments easy accessible from the outside of the positioner. Different mounting arrangements are available through a wide selection of consoles. Actuator and positioner are built together to one unit. The signal from a pneumatic controller is compared to the position of the cylinder rod and by means of a slide valve the pressure in the cylinder is changed so that a balance position is gained between signal and cylinder rod. The actuator is working in both directions, resulting in that all available pressure is used for actuating force. With different mounting kits it is also possible to mount the positioner on most types of cylinders available on the market
Technical specification WV-121 Cylinder 80 mm 100 mm 140 mm Piston speed 26 mm/s 17 mm/s 8 mm/s Actuating force at 7 kp/cm2 300 kp 500 kp 1000 kp Piston rod 18 mm 22 mm 30 mm Stroke length Air supply Air consuption Signal range Function Min. stroke 150 mm Max. stroke 700 mm 5-7 kp/cm2 25 l/min. 0,2-1,0 kp/cm2 (3-15 psi) Split range (Option) Linear - increased signal gives an outgoing rod movement Hystereses Better than 0,5 % Working temperature Luftanslutning Mounting Rod end connection -20... +70 o C -20... + 100 o C (Option) R1/8 internal thread Pivots at front Rear bracket(option) Fork or ball coupling Diameter 80 and 100mm M16x2 Diameter 140 mm M30x2 Material Cylinder housing Anodised aluminium Guiding lining Self lubricating brass Piston Nitril, Viton(Option) Stuffing Nitril, Viton(Option) Rod Acid resistant steel Protection class IP 54
Dimensions Cylinder Cylinder Ställcylinder A A 1 B C D E F a b c d e f g h i j 80 90 90 96 43 48 85 140 135 30 14 10 35 11 25 17 14 25 11,5 100 110 110114 43 48 90 140 135 30 14 10 35 11 25 17 14 25 11,5 140 152 164156 43 48 116 150 180 30 18 18 50 15 35 30 22 42 19,5
Actuator WV-121 with mounted I/P transducer ATEX-approval as option Application range I/P transducers are used when the actuator shall be controlled via an analogue control signal of 4-20 ma. I/P transducer TD7800 is completely insensitive to vibrations and mounted position. Thanks to the internal feedback it has very high accuracy. The I/P transducer i also available with ATEX approval, model TDEI7800. Design The supply of compressed air is internally connected between the actuator and the I/P transducer. Zero-point and span are easily accessible from the exterior of the I/P transducer. Electrical connection DIN 43650 Air connection Tube, Ø6/4 mm Case Chromat treated aluminium Trim Stainless steel, brass, zincplated steel Elastomers Buna N Finish Epoxy powder coating Position effect No measurable effect Supply pressure effect No measurable effect Vibration effect No measurable effect Temperature effect +0, 04 % per o C Technical specification Supply pressure Protection class ATEX approval Input range Output range Temperature range Hysteresis and repeatability 4 7 bar IP65 EEx ia IIB T4, II 1G(T4) 4 20 ma 0,2 1 bar -20 +70 o C <0, 1 % full scale
48 Electrical connection Contact Kontakt Input Insignal stift 4-20 ma 1 + 2-4 Ground Jord Dimensions 39,8 107,9
Pneumatic actuator WV-121 - with mounted feedback potentiometer Application range Position feedback is used to indicate the position of the actuator piston. The position feedback is as standard provided with a resistance output but can also be supplied with a built-in signal transducer for a current output of 4-20 ma. Feedback potentiometer type KTC, 150-700 mm Potentiometric transducer with conductive track suitable for measurement, monitoring and control of mechanical strokes. Critical in providing a smooth output, mechanically dependent on the stable glide of the shaft and wiper on the element s surface. The transducer is also available with built in signal converter with 4-20 ma output. The mechanical design for that version is the same. KTC has a DIN 43650 ISO 4400 connector. Technical specification KTC Supply voltage < 40 Vdc Output signal Potentiometer / 4-20 ma Resolution Unlimited Linearity 400mm stroke, <0.07% FS > 400mm stroke, <0.05% FS Repeatability <0.013mm Recommended wiper current <1 µa Temperature range Potentiometer output -40 o C..+125 o C 4-20 ma output -40 o C..+85 o C Material Housing Aluminium Rod Stainless steel Encapsulation IP55(When non-operating) Life span <10 million cycles Dimensions W=33mm, H=33mm, L= see below Stroke length mm 150 225 300 375 450 525 600 750 900 Resistance k 5,0 2,4 3,2 4,0 4,8 5,6 6,4 8,0 9,6 Length mm 215 291 367 444 520 596 672 825 977
Pneumatic actuator WV-121 - with mounted feedback potentiometer Connection KTC Contact Resistance output Current output 4-20 ma 1 - supply - supply 2 Signal Signal 4-20 ma 3 + supply +15..35 Vdc Feedback potentiometer Positek type 101, 150-700 mm P101 is a rugged, reliable, compact external sensor designed to withstand high mechanical stresses in the most demanding environments. The sensor works with Positeks unique inductive technology, which their proprietary ASIC (electronic circuit) that makes electronics very compact and reliable. The sensor has several advantages over the original LVDTs and other similar sensors. They are more compact, accurate, robust and requires no special sensitive magnetic components that attract metal particles. A wide range of of electrical I/O options are available and includes a 4-20 ma output signal. Technical specification Positek 101 Stroke length 150 to 700 mm. Factory calibrated range with adjustable zero and span Accuracy < +/-0,5% FSO Temperature coefficient < +/-0,001%/ ºC Linearity < +/-0,25% at 20º C Frequency response > 500 Hz (3dB) Noise < 0,1 % FSO Resolution Infinite Temperature operating -40 to +125ºC (only 5V), -20 till +85ºC Temperature storage -40 till +125ºC Encapsulation IP67 EMC IEC 801 EN50082-2, IEC 801 EN50081-1 Vibration IEC 68-2-6 10g Shock IEC 68-2-29 40g Dimensions Ø 35 mm, L = stroke lenght + 163 mm Supply Output signal + 5 VDC +/- 1 V 0,5-4,5 VDC ratiometric +/- 15 VDC +/- 5 VDC or +/-10 VDC +16 to 28 VDC 0,5 to 9,5 VDC 18 to 28 VDC 4 to 20 ma (2-wire) 10 to 28 VDC 4 to 20 ma (3-wire sink) 16 to 28 VDC 4 to 20 ma (3-wire source) Supply current 10 ma typical 20 ma max
Wall brackets suitable for actuator WV-121 TYPE WV-153 Cylinder A B C D E F G H 80* 204 105 235 53 130 10 18 151 100 224 115 256 63 130 10 18 162 140 262 135 309 90 130 10 18 188 Väggkonsoler passande till ställdon WV-111, WV-121, WV-118, WV-109 och WV-110 TYPE WV-601 TYP TYPE WV-112 Cylinder A B C D E F G H A B C D E F G H 80* 172 80 130 28,5 73 10 18 65,5 168 105 235 53 130 10 18 151 100 197 95 150 28,5 93 10 18 75 188 115 256 63 130 10 18 162 140 249 120 193 28,5 133 10 18 96,5 288 135 309 90 130 10 18 188 TYP WV-153
Cylinder A B C D Cylinder A B C D 80 90 11 72 72 80 90 11 235 75 100 110 11 82 89 100 110 11 256 90 Rear brackets suitable for actuator WV-121 Back Bakre ball-and-socket kulledsfäste Typ joint WV-111-R bracket Cylinder A B C D E β 80 24 36 16 21 90 15 100 29 41 20 25 110 15 Straight bracket type WV-111-1 Angled bracket type WV-111-Z Cylinder A B C D Cylinder A B C D 80 90 11 72 72 80 90 11 235 75 100 110 11 82 89 100 110 11 256 90
Rear brackets suitable for actuator WV-121 Straight simple bracket type WV-111-2 Cylinder A B C D E F G 80 22 20 55 40 20 20 75 100 22 20 55 40 20 20 75 140 37 35 75 70 20 35 100 Straight Rakt bakre double dubbelt back svängfäste bracket type Typ WV-111-3 3 Cylinder A B C D E F G H 80 22 20 55 40 20 30 75 94 100 22 20 55 40 20 30 75 94 140 37 35 75 70 20 30 100 124 Paab Tekno Trading AB - Tingvallastrand 12, 661 40 Säffle, Sweden Tel: +46 533 150 60 - Fax +46 533 169 31 - info@paab.com - www.paab.com