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Pneumatic Positioner 

YT-1200 series 

                                                                            Product Manual 

 

Ver. 1.18 

 

Introduction 

1.1 

General Information for the users 

Thank you for purchasing Rotork YTC Limited products. Each product has been fully inspected after 

its  production  to  offer  you  the  highest  quality  and  reliable  performance.    Please  read  the  product 

manual carefully prior to installing and commissioning the product.     

 

Installation, commissioning, and maintenance of the product may only be performed by trained 

specialist personnel who have been authorized by the plant operator accordingly. 

 

The manual should be provided to the end-user.   

 

The  manual  can  be  altered  or  revised  without  any  prior  notice.  Any  changes  in  product’s 

specification,  design,  and/or  any  components  may  not  be  printed  immediately  but  until  the 

following revision of the manual. 

 

When the manual refers to 

“Valve Zero / Zero”

 means the final valve position upon pneumatic 

pressure  has  been  fully  exhausted  from  positioner’s  OUT1  port.  For  example,  the  valve  zero 

position may differ between linear direct and reverse actions. (DA/RA) 

 

The manual should not be duplicated or reproduced for any purpose without prior approval from 

Rotork YTC Limited, Gimpo-si, South Korea. 

 

In case of any other problems that are not stated in this manual, please make immediate contact 

to Rotork YTC Limited. 

 

Positioner  is  an  accessory  of  the  control  valve,  so  please  make  sure  to  read  the  applicable 

instruction manual of the control valve prior to installation and operation. 

 

1.2 

Manufacturer Warranty 

 

For the safety,  it  is  important to follow the  instructions in the manual.  Manufacturer will not  be 

responsible for any damages caused by user’s negligence.   

 

Any modifications or repairs to the product may only be performed if expressed in this manual. 

Injuries and physical damages caused by customer’s modifying or repairing the product without a 

prior  consultation  with  Rotork  YTC  Limited  will  not  be  compensated.  If  any  alterations  or 

modifications are necessary, please contact Rotork YTC Limited directly.     

 

The  warranty  period  of  the  product  is  (18)  months  from  the  date  of  shipment  unless  stated 

otherwise. Date of shipment can be checked by providing the LOT NO. or SERIAL NO. to us. 

 

Manufacturer  warranty  will  not  cover  products  that  have  been  subjected  to  abuse,  accidents, 

alterations,  modifications, tampering,  negligence, misuse, faulty  installation,  lack of reasonable 

care, repair or service in any way that is not contemplated in the documentation for the product, 

or if the model or serial number has been altered, tampered with, defaced or removed; damages 

that  occurs  in  shipment,  due  to  act  of  God,  failure  due  to  power  surge,  or  cosmetic  damage. 

Improper or incorrectly performed maintenance will void this limited warranty. 

 

For  detailed  warranty  information,  please  contact  the  corresponding  local  Rotork  YTC  Limited 

office or main office in South Korea. 

Содержание YT-1200 Series

Страница 1: ...Pneumatic Positioner PRODUCT MANUAL YT 1200 Series VERSION 1 18 Rotork YTC Limited...

Страница 2: ...option 11 2 6 Certifications of External products 12 2 6 1 SPTM 5V 12 2 6 2 SPTM 6V 12 2 6 3 YT 850 12 2 6 4 YT 870 12 2 7 Parts and Assembly 14 2 7 1 YT 1200L 14 2 7 2 YT 1000R 14 2 7 3 YT 1200R SPTM...

Страница 3: ...Supply Pressure Condition 32 5 3 Piping Condition 32 5 4 Connection Piping with actuator 33 5 4 1 Single acting actuator 33 5 4 2 Double acting actuator 35 6 Adjustments 37 6 1 Ra or Da Setting 37 6 1...

Страница 4: ...ccessory of the control valve so please make sure to read the applicable instruction manual of the control valve prior to installation and operation 1 2 Manufacturer Warranty For the safety it is impo...

Страница 5: ...urrent and voltage to disappear completely External explosion proof product has 2 ports for power connection Explosion proof type wires and packing should be used Blind plug is required when any port...

Страница 6: ...n be set by simple operating Low air consumption Simple Direct Reverse Action change Simple Zero Span adjustment External options such as position transmitter PTM and or limit switch L S are available...

Страница 7: ...mbient temperature INPUT SIGNAL Indicates input signal pressure range SUPPLY PRESSURE Indicates the supply pressure range AIR CONNECTION Indicates connection thread type Fig L 1 Sticker label Fig L 2...

Страница 8: ...6 Ambient Temp S H L 20 70 C 4 158 F 20 120 C 4 248 F 40 70 C 40 158 F 7 Option Only Rotary type 0 1 2 3 4 5 6 None Dome cover 4 to 20 mA feedback SPTM 5V Non explosion 1 4 to 20 mA feedback SPTM 6V...

Страница 9: ...n Rc 1 4 or 1 4 NPT Gauge Connection Rc 1 8 or 1 8 NPT Ingress Protection IP66 Ambient Temperature Standard 20 70 C 4 158 F High 20 120 C 4 248 F Low 40 70 C 40 158 F Linearity 1 F S 2 F S Hysteresis...

Страница 10: ...nal 4 20 mA DC External Load Resistance Rext Vs 9 20 mA 750 ohms Vs 24 V Supply Voltage Vs 9 28 V DC Linearity 1 F S Hysteresis 0 2 F S Sensitivity 0 2 F S Conduit Entry G 1 2 Ingress Protection IP67...

Страница 11: ...te pressure of 760 mmHg and humidity of 65 Please contact Rotork YTC Limited for detailed testing specification External L S Model YT 870 Housing Material Aluminum Switch Type Mechanical Type 2 x SPDT...

Страница 12: ...cation No RU C KR MIO62 B 04759 Ambient temperature 40 60 C 40 140 F Electromagnetic Compatibility EMC EMC directive 2014 30 EC from April 2016 EC Directive for CE conformity marking 2 6 3 YT 850 Elec...

Страница 13: ...x tb IIIC T85 C Zone 21 AEx tb IIIC T85 C Type 4 4X IP67 Certification No 2541711 Ambient temperature 20 60 C 4 140 F CCC China Rating Ex d IIC T6 Gb Ex tD A21 IP67 T85 C Certification No 202032230700...

Страница 14: ...Pneumatic Positioner YT 1200 series Product Manual Ver 1 18 14 2 7 Parts and Assembly 2 7 1 YT 1200L 2 7 2 YT 1000R...

Страница 15: ...Pneumatic Positioner YT 1200 series Product Manual Ver 1 18 15 2 7 3 YT 1200R SPTM 6V External 2 7 4 YT 1000R YT 870 External...

Страница 16: ...Pneumatic Positioner YT 1200 series Product Manual Ver 1 18 16 2 8 Product Dimension 2 8 1 YT 1200L 2 8 2 YT 1200R Fork Lever type...

Страница 17: ...Pneumatic Positioner YT 1200 series Product Manual Ver 1 18 17 2 8 3 YT 1200R Namur type 2 8 4 YT 1200R Dome indicator...

Страница 18: ...Pneumatic Positioner YT 1200 series Product Manual Ver 1 18 18 2 8 5 YT 1200R External SPTM 6V...

Страница 19: ...Pneumatic Positioner YT 1200 series Product Manual Ver 1 18 19 2 8 6 YT 1000R External Limit Switch YT 870...

Страница 20: ...there is enough pressure inside the chamber to push the actuator s spring actuator s stem will start to go down and through the feedback lever stem s linear motion will be converted to span lever s r...

Страница 21: ...through OUT1 Then chamber s OUT1 pressure will increase and the actuator s stem will rotate and through the feedback shaft actuator s rotating motion will be transferred to the cam This motion will t...

Страница 22: ...pment to avoid entire system shut down Ensure there is no remaining pressure in the actuator The positioner has a vent cover to exhaust internal air and drain internal condensation water When installi...

Страница 23: ...shaft Bracket bolts and washers for positioner not supplied with the positioner Connection bar not supplied with the positioner 4 3 1 Preparing Bracket for the positioner Proper bracket must be made i...

Страница 24: ...the bolts M8 x 1 25P Fig 4 3 Attaching positioner to bracket Fig 4 4 Attaching the bracket to actuator yoke 2 Attach the positioner with the bracket to the actuator yoke DO NOT TIGHTEN THE BRACKET CO...

Страница 25: ...ve at 50 of the total stroke 5 Insert the connection bar between the feedback lever and lever spring The connection bar must be located upward from the lever spring as shown the below left figure If i...

Страница 26: ...cause poor linearity Fig 4 7 Feedback lever and valve stem 7 Check the valve stroke The stroke numbers are engraved on the feedback lever of the positioner Position the connection bar at the number o...

Страница 27: ...not touch the stopping bosses of positioner which is located on the backside of the positioner If the linear lever stopper touches the stopping bosses the positioner should be installed further away...

Страница 28: ...em rotates 90 degrees Before proceeding with the installation ensure following components are available 4 4 1 Components Positioner Fork lever Only Fork lever type Rotary bracket set 3 pieces 4 pcs x...

Страница 29: ...the positioner contains three components The bracket is designed to fit onto the actuator with 20 mm 30 mm and 50 mm stem height H according to VDI VDE 3845 standard Please refer to below figures how...

Страница 30: ...n of the actuator stem at 0 For single acting actuator it is easy to check 0 point by supplying no pressure to the actuator For double acting actuator check actuator stem s rotation direction clockwis...

Страница 31: ...in 2 mm Dia of the main shaft of the positioner into the hole of center of the fork lever The clamping pin will be locked to the fork lever spring Setting alignment of center of main shaft of the posi...

Страница 32: ...C lower than ambient temperature Avoid from dusty air Use 5 micron or smaller filter Avoid oil Comply with ISO 8573 1 or ISA 7 0 01 Supply pressure range is 0 14 0 7 MPa 1 4 7 bar Set air filter regu...

Страница 33: ...acting type As input signal ampere increases the supply air pressure will be supplied through Out1 port Fig 5 1 Single acting linear actuator Fig 5 2 Single acting rotary actuator Refer to below diagr...

Страница 34: ...atic Positioner YT 1200 series Product Manual Ver 1 18 34 Fig 5 4 Setting directions of piping and span for linear RA single actuator Fig 5 5 Setting directions of piping and cam for rotary single act...

Страница 35: ...and the exhausting air from actuator will be exhausted through Out2 of positioner Fig 5 6 Double acting linear actuator Fig 5 7 Double acting rotary actuator Refer to below diagram and check if the va...

Страница 36: ...Pneumatic Positioner YT 1200 series Product Manual Ver 1 18 36 Fig 5 9 Setting directions of piping and cam for rotary double actuator...

Страница 37: ...1 18 37 6 Adjustments 6 1 Ra or Da Setting 6 1 1 Linear Positioner 1 If the actuator axis moves down when input signal is increased assemble the Span to upper M6 Tap hole like the below figure DA Fig...

Страница 38: ...in case of need re assemble the CAM so that DA Direct Acting lettered surface is facing upward 2 If the actuator axis rotates counter clockwise when input signal in increased in case of need re assem...

Страница 39: ...d 6 2 Adjustment Zero Point Set input signal pressure at 0 02 MPa or 0 1 MPa as the initial signal and rotate the adjuster of zero unit handle upward or downward to adjust actuator s zero point Please...

Страница 40: ...stroke If the stroke is too low the span should be increased If the stroke is too high the span should be decrease 2 Changing span will affect zero point setting so zero point should be set again afte...

Страница 41: ...ctly supplied from out1 port of positioner to the actuator regardless of input signal pressure On the other hand if the switch is turned clockwise toward A Auto and it is fasten tightly then the posit...

Страница 42: ...nting the orifices can be installed in the outports of the pilot 1 Separate the pilot unit from the positioner 2 Separate the o rings from out1 and out2 ports and insert the orifices Before re assembl...

Страница 43: ...usts and other substances and lead to malfunction of the positioner First of all remove the pilot valve from the positioner and see if the holes on the screens are not clogged If the screens are clean...

Страница 44: ...relay valve 2 Check for a gap or damages between the nozzle and the flapper If damaged please send the product to the corresponding local Rotork YTC Limited office or main office in South Korea for r...

Страница 45: ...t be re adjusted as well 3 Check if supply air pressure level is stable from the regulator If the level is unstable the regulator must be replaced Hysteresis is too low 1 In case of double acting actu...

Страница 46: ...tork YTC Limited Address 81 Hwanggeum ro 89 Beon gil Yangchon eup Gimpo si Gyeonggi do South Korea Postal code 10048 Tel 82 31 986 8545 Fax 82 70 4170 4927 Email ytc sales rotork com Homepage http www...

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