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YT-1200R Installation

YT-1200R should be used for rotary motion valve, that is ball valve, butterfly valve using rack

and pinion, scotch yoke or complex type actuator, which its stem rotates 90 degrees. Before

installation, be sure to check for following installation components.

①

YT-1200R main body

②

Fork lever and lever spring

③

1 set of bracket (3 pcs)

④

4 pcs of hexagon head bolt M8 x 1.25P

⑤

4 pcs of M8 plate washer

YT-1200R Install Example

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Содержание YT-1200L

Страница 1: ...Pneumatic Positioner YT 1200 Series USER S MANUAL YTC Ver 1 01 ...

Страница 2: ......

Страница 3: ...ility for any damages or accidents which resulted by any alteration or modification of the product and parts If alteration or modification is necessary please contact the manufacturer directly Manufacturer warrants the product from the date of original retail purchase of the product for one 1 year except as otherwise stated Manufacturer warranty will not cover the products that the product have be...

Страница 4: ...air consumption Direct Reverse action can be set easily Zero Span adjustment processes are simple Feedback connection is easy Operation Logic Bellows push flapper if input pressure increases Then the gap between nozzle and flapper increases which results pressure in upper spool exhaustion This would cause spool to rise upward As the spool rises it pushes format and the air pressure will be supplie...

Страница 5: ...l name and any options if any Input Signal Indicates current input signal range Supply Pressure Indicates the range of supply pressure Serial Number Indicates unique serial number Suffix Symbol YT 1200 series follows suffix symbols as below ...

Страница 6: ...Specification ...

Страница 7: ...Parts and Assembly ...

Страница 8: ...Dimensions ...

Страница 9: ...body Feedback lever and lever spring Flange nut bottom side of YT 1200L 4 pcs of hexagon head bolts M8 x 1 25P 4 pcs of M8 plate washer Installation Steps 1 Proper bracket must be made in order to attach positioned on the actuator yoke Please consider following when making a bracket A Feedback lever should be leveled at 50 of the valve stroke refer to step G B Feedback lever connection bar of the ...

Страница 10: ...be less than 6 3mm Fig 2 5 Connect air filter regulator to the actuator temporarily Set supply pressure of the regulator in order to position the actuator damp at 50 of valve stroke Fig 3 6 Insert connection bar into the YT 1200L feedback lever The connection bar should be inserted at the 50 point on the feedback lever which would help to reduce hysteresis fig 4 ...

Страница 11: ...o the valve stroke fig 6 To adjust move the bracket or the connection bar NOTE After installing YT 1200L operate the valve from 0 to 100 stroke by using air filter regulator Both of 0 and 100 the feedback lever should not touch the lever stopper which is located on the backside of YT 1200L fig 7 If the feedback lever touches the stopper YT 1200L should be installed further away from the center of ...

Страница 12: ...k and pinion scotch yoke or complex type actuator which its stem rotates 90 degrees Before installation be sure to check for following installation components YT 1200R main body Fork lever and lever spring 1 set of bracket 3 pcs 4 pcs of hexagon head bolt M8 x 1 25P 4 pcs of M8 plate washer YT 1200R Install Example ...

Страница 13: ...ble with the bracket as shown in fig 8 9 2 Attached bracketed YT 1200R to the actuator by using hexagonal headed and wrench bolts Size of the bracket hole is 6mm When tightening bolts use spring washer or similar for complete attachment to the actuator so YT 1200R will not be shaken by vibration or any other impact The direction of bracket is different by the operating condition but in general the...

Страница 14: ...lockwise or counter clockwise Installation angle of the fork lever should be 45 degrees based on the linear shaft For NAMUR shaft the angle does not matter 5 After setting fork lever position lock nuts which are assembled on bottom of the fork lever 6 Attach YT 1200R to the bracket Fix the damping pin on the main shaft of YT 1200R and insert connection bar into the fork lever slot so it can be loc...

Страница 15: ...7 Tighten YT 1200R base and the bracket with hexagon headed bolts and plate washer It is recommended to tighten four bolts after checking YT 1200R s position fig 13 ...

Страница 16: ...4 7 kgf cm2 140 700 kPA Set air filter regulator s supplied pressure 10 higher than actuator s spring range pressure Pipe Condition Make sure inside of pipeline is emptied Do not use pipeline that has been squeezed or has hole To maintain flow rate use the pipeline that has more than 6mm inner diameter 10mm outer diameter Do not use extremely long pipeline system It may affect flow rate due to the...

Страница 17: ...cked when supply signal is supplied When actuator s stem rotates clockwise the face of cam must be shown DA On the other hand when the stem rotates counter clockwise adjust cam so RA shows on the face of cam Check whether actuator s angle is at the initial point After checking the initial point release the hexagonal flange nut and adjust the position of the bearing so it is at 0 point Figure 18 Wh...

Страница 18: ...ro rotate Span screw so supply signal reaches at the span point on the indicator Changing span point affects zero point setting So zero setting must be set again After setting zero point confirm the span point This step must be repeated until both points are properly set If 1 2 split range is used YT 1200L can be used after span and zero point are set For YT 1200R with 1 2 split range the span spr...

Страница 19: ...ressure will be supplied to the actuator directly Always set the setting back to A after any change 4 If OUT2 in single acting actuator or double acting actuator is used A M switch will not operate Adjustment Seat Adjuster Seat adjuster is set according to the customer s request before the positioned is delivered Please do not adjust the seat adjuster Seat adjuster is used for double acting actuat...

Страница 20: ...damaged please send the unit to YTC for repair The pressure is exhausted only by A M switch Check if the positioner s nozzle has been blocked Also check if the pressure is supplied to the posiioner and the pressure is being exhausted trough the nozzle If the nozzle has been blocked by any substances please send the unit to YTC for repair Hunting occurs Check if safety spring has been displaced Nex...

Страница 21: ...ow In case of double acting actuator check if seat adjustment has been properly done Please contact YTC for any further inquiries regarding the seat adjustment Backlash can occur when feedback lever and lever spring is loosen To avoid backlash adjust the lever spring Check if the connection bar to the feedback lever is tightly fastened ...

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