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Pneumatic Positioner

YT-1200 series

Product Manual

Ver. 1.18

29

4.4.2

Rotary Bracket Information

The rotary bracket set(included with 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 to adjust the height of the bracket.

Fig. 4-12: Brackets and positioner

Fig. 4-13: Actuator stem Height

Fig. 4-14: Rotary Brackets Assembly

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Summary of Contents for YT-1200 Series

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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