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Smart Positioner

YT-2700

Product Manual

Ver. 1.18

8.6.3

D1 Value (Kd1)

D value indicates the derivative value of the compensation signal based on the percentage of error

allowance. As the value increase, it is more likely to have hunting. As the value decreases, it can

have poor linearity or dynamic characteristic. but these values are applicable for only when input

signal is increasing.













Press <UP> or

<DOWN> button

if the above is not

displayed.

<ESC>

3 times



8.6.4

P2 (KP2) and D2 (Kd2) values

P2 and D2 values

’ principles are same as P1 and D1, but these values are applicable for only when

input signal is decreasing.

8.6.5

P_ (KP_) and D_ (Kd_) Values

P_ and D_ values

’ principles are same as P and D values, but these values will be activated when

the error percentage of the actual stroke per input signal reaches within 1%.

8.6.6

PT1 (PT1) and PT2 (PT2) Values

PT value indicates the minimum time duration(unit: 0.1mSec) of internal signal controlling pilot valve.

PT1 is for increased input signal, and PT2 is for decreased input signal’s PT values.













Press <UP> or

<DOWN> button

if the above is not

displayed.

68 means 6.8mSec

<ESC>

3 times



Summary of Contents for YT-2700

Page 1: ...SMART POSITIONER PRODUCT MANUAL YT 2700 Rotork YTC Limited VERSION 1 18 ...

Page 2: ...4 3 1 Safety 14 3 2 Tools for installation 14 3 3 Linear positioner Installation 15 3 3 1 Safety 16 3 3 2 Linear positioner Installation Steps 16 3 4 Rotary positioner Installation 21 3 4 1 YT 2700R Components 21 3 4 2 Rotary positioner Installation Steps 22 4 Connection Air 24 4 1 Safety 24 4 2 Supply Pressure Condition 24 4 3 Piping Condition 24 5 Connection Power 25 5 1 Safety 25 5 2 Connection...

Page 3: ...D for Valves 37 8 7 2 Zero Point TR_ZERO and End Point TR_END for Transmitter 38 8 7 3 Normal Reverse Feedback Signal TR NORM REVS 39 8 7 4 Normal Reverse HART Signal HT NORM REVS 39 8 8 Valve Mode VALVE 40 8 8 1 Acting Adjustment ACT RA dA 40 8 8 2 Valve flow Characteristic Adjustment CHAR 41 8 8 3 User defining flow Characteristics USER SET 42 8 8 4 Tight Shut Open TSHUT OP 44 8 8 5 Tight Shut C...

Page 4: ...ease 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 ...

Page 5: ...rtifications Explosion proof type of cables and gaskets should be used when explosion gases are present at the installation site Ring terminal with surface area of more than 0 195mm2 with M4 spring washer should be used to connect the power For external ground terminal ring terminal with surface area of more than 5 5mm2 should be used Some of the enclosure parts are made of non metallic materials ...

Page 6: ... simple As an advantage of having very low air consumption it could greatly reduce operating costs in large scale plants It is compatible with most of controllers Variable orifices can be used to minimize the hunting occurrence and optimize operating conditions Various information about positioner can be processed by HART communication option Valve system becomes more stable by outputting analog f...

Page 7: ...upply pressure range SERIAL NUMBER Indicates unique serial number YEAR MONTH Indicates manufactured year and month AMBIENT TEMP Indicates the allowable ambient temperature for explosion proof Ui Ii Pi Ci Li Indicates the allowable electrical data in the certificate You can see the details in the certificate Fig L 1 Non explosion proof Fig L 2 Intrinsic safety type Precautions Be careful not to app...

Page 8: ...N i Non Explosion Ex ia IIC T5 4 Lever Type Linear 1 5 35 mm Rotary 1 2 3 4 5 M6 x 34L M6 x 63L M8 x 34L M8 x 63L Namur 5 Conduit Air Connection Type 1 2 3 4 5 G 1 2 Rc 1 4 G 1 2 1 4 NPT G 1 2 G 1 4 M20x1 5P Adapter type 1 4 NPT 1 2 NPT 1 4 NPT 6 Communication 0 2 None HART Communication 7 Option 0 1 None Position Transmitter 8 Fail Option F S Fail Freeze Fail Safe ...

Page 9: ...osion Proof Ex ia IIC T5 Operating Temperature 30 80 22 176 Ambient Temperature Of Explosion proof T5 40 60 40 140 Linearity 0 5 F S Hysteresis 0 5 F S Sensitivity 0 2 F S Repeatability 0 3 F S Flow Capacity 9 LPM Sup 0 14 MPa Air Consumption 0 01 LPM Sup 0 14 MPa Output Characteristic Linear Quick Open EQ User Set Vibration No Resonance up to 100Hz 6G Humidity 5 95 RH 40 Communication Option HART...

Page 10: ...elow are posted on Rotork YTC Limited homepage www ytc co kr KCs Korea Type Intrinsic safety Rating Ex ia IIC T5 Certification No 10 KB2BO 00002X Ambient temperature 40 60 T5 T100 2 7 Parts and Assembly Fig 2 1 Exploded view 1 Base cover 4 Pilot 2 PCB cover 5 Base body 3 PCB 6 Feedback module ...

Page 11: ...Smart Positioner YT 2700 Product Manual Ver 1 18 11 2 8 Product Dimension Fig 2 2 YT 2700L ...

Page 12: ...Smart Positioner YT 2700 Product Manual Ver 1 18 12 Fig 2 3 YT 2700R Fork lever type ...

Page 13: ...Smart Positioner YT 2700 Product Manual Ver 1 18 13 Fig 2 4 YT 2700R Namur Type ...

Page 14: ...tem shut down Ensure there is no remaining pressure in the actuator The positioner has two vent covers The vent cover of them which is indicated on the below is for exhausting internal air and draining internal condensation water When installing the positioner make sure the vent cover must be facing downward Otherwise the condensation water could cause damages to PCB Fig 3 1 The correct positions ...

Page 15: ... Installation Linear positioner should be installed on linear motion valves such as globe or gate type which uses spring return type diaphragm or piston actuators Fig 3 2 Installation example of YT 2700L on a right yoke Fig 3 3 Installation example of YT 2700L on a left yoke ...

Page 16: ...e actuator yoke Please consider following important points when a bracket is being designed Positioner s feedback lever must be vertical to the valve stem at 50 of the valve stroke The connection bar of the actuator clamp for the feedback lever should be installed in such a way that the valve stroke length coincides with the corresponding figure in mm marked on the feedback lever Improper setting ...

Page 17: ...sitioner on a left yoke 3 Connect connection bar to the actuator clamp The hole gap on the feedback lever is 6 5mm so the connection bar s outer diameter should be less than 6mm 4 Connect an air filter regulator to the actuator temporarily Supply enough air pressure to the actuator in order to position the valve stroke at 50 of the total stroke Fig 3 8 Supplying proper regulated air to the actuato...

Page 18: ...own below right figure the connection bar or the lever spring will be worn out quickly because of excessive strong tension Fig 3 9 Proper way to insert connection bar between feedback lever and lever spring 6 Check if feedback lever is vertical to the valve stem at 50 of the valve stroke If it is not vertical adjust the bracket or the connection bar to make vertical Improper installation may cause...

Page 19: ...re engraved on the feedback lever of the positioner Position the connection bar at the number on the feedback lever which corresponds with the desired valve stroke To adjust move the bracket the connection bar or both Stroke 20mm Stroke 30mm Fig 3 12 Feedback lever and location of the connection bar The effective angle of the linear lever is 30 degree ...

Page 20: ... feedback lever should not touch the lever stopper which is located on the backside of the positioner If the feedback lever touches the stopper the positioner should be installed further away from center of the actuator Fig 3 13 Feedback lever should not touch lever stopper on 0 100 valve stroke 9 After the installation tighten all of the bolts on the bracket and the connection bar ...

Page 21: ... rotates 90 degrees Before proceeding with the installation ensure following components are available 3 4 1 YT 2700R Components Positioner Fork lever Only Fork lever type Rotary bracket only for a stem height of 20 mm 4 pcs x hexagonal headed bolts M6 x 1P 4 pcs x M6 plate washers Bolts and washers to attach the bracket to a actuator not supplied with the positioner Fig 3 14 YT 2700R Fork lever ty...

Page 22: ... pressure to the actuator For double acting actuator check actuator stem s rotation direction clockwise or counter clockwise by supplying pressure to the actuator 3 Only Fork lever type Install the fork lever after setting actuator s stem at 0 Check the actuator stem s rotation direction clockwise or counter clockwise Installation angle of the fork lever should be 45 to the longitudinal direction ...

Page 23: ...le 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 positioner and center of the actuator s stem is very important Poor alignment of the main shaft and the actuator s stem decreases the positioner s durability due to unnecessary forces on the main shaft Fig 3 20 Main shaft center alignment Fork lever Fig 3 21 Main...

Page 24: ...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 regulator s pressure level 10 higher than actuator s spring range pressure 4 3 Piping Condition Ensure inside of pipe is clean of obstructions Do not use pipeline that is squeezed or shows any type of damamg...

Page 25: ...there is a filter or safety barrier then consider using a current source which could supply higher Compliance voltage Positioner with PTM options must be supplied with 9 28V DC separately For mechanical limit switch option separate 12 30V DC must be supplied For Proximity limit switch option separate 8 2V DC must be supplied DO NOT connect Voltage source 9 28V DC to Input 4 20mA DC terminal IN IN ...

Page 26: ...re two ground bolts on the positioner An internal ground is F G of the terminal on the PCB An external ground bolt is located next to the conduit entry Please make sure that the resistance is less than 100 ohm AO Analog Output AI Analog Input Vs Voltage Source RL Load Resistance IN Input Signal IN Input Signal F G Frame Ground OUT Feedback Signal OUT Feedback Signal ...

Page 27: ...t the bottom of the bolt head the flow rate becomes maximum When the bottom of the orifice goes down and reaches at body base the flow rate becomes minimum Fig 6 1 Variable orifice adjustment 6 2 Manual buttons By pressing SUP and EXH buttons YT 2700 can be manually operated without and input signal SUP button allows supply air to transfer to the actuator from positioner s OUT1 port and EXH button...

Page 28: ...b PCB Installment By adding sub PCB the positioner can have additional functions There are 3 types of sub PCB HART Only PTM Only PTM HART Fig 7 1 Types of Sub PCB When purchasing option sub PCBs separately 4 Bolts and 2 supports are supplied together with the sub PCB ...

Page 29: ...b PCB into connector of main PCB correctly 4 Fasten the sub PCB with the rest of a bolt Fig 7 2 Installation of Optional sub PCB on Main PCBs JP1 jumper must be removed when HART option included sub PCB is being mounted 5 After PTM sub PCB is installed newly values of TR_ZERO and TR_END must be calibrated for correct output signals For the calibration of TR_ZERO and TR_END please refer to section ...

Page 30: ...g with any Auto Calibration please separate valve from the entire system by using bypass valve so Auto Calibration will not affect entire valve process 8 2 Button Description Positioner has 4 buttons and they enable to perform various functions Fig 8 1 Buttons UP DOWN Move to next menu and adjust ESC Return to previous menu ENTER Enter to main and sub menus and save ...

Page 31: ...y will change in the order indicated above If ESC UP pushed the order will be appeared in opposite order By pressing ESC the display will return to RUN PV mode Please note that the screen will return to RUN PV mode if 100 seconds elapse from the last button pressed By pressing ESC button several times from any MODES it will return to RUN PV mode Therefore if the users have entered into wrong modes...

Page 32: ...above is not displayed Press UP or DOWN button if the above is not displayed A few seconds later 8 4 2 AUTO2 Calibration AUTO2 AUTO2 changes all of the parameters It is recommended to perform AUTO2 when the positioner has been installed on the valve for the first time or the positioner has been reinstalled after dissemble from an actuator A few seconds later Press UP or DOWN button if the above is...

Page 33: ...ntrol values However in some instances hunting or oscillation may occur when the valve actuator control values are not optimized Hunting or oscillation can be prevented by adjusting parameter values If you change the parameter values with UP DOWN buttons the changed value is immediately applied to the positioner control When the desired control status is reached you must press ENTER button to save...

Page 34: ... 3 seconds Press UP or DOWN button if the above is not displayed Press UP or DOWN button if the above is not displayed UP DOWN ESC 3 times 8 6 2 P1 Value KP1 P value indicates the ratio of the compensation signal based on the percentage of error allowance As the value increase the positioner finds the target point quickly but it is more likely to have hunting As the value decrease the stability of...

Page 35: ...6 4 P2 KP2 and D2 Kd2 values P2 and D2 values principles are same as P1 and D1 but these values are applicable for only when input signal is decreasing 8 6 5 P_ KP_ and D_ Kd_ Values P_ and D_ values principles are same as P and D values but these values will be activated when the error percentage of the actual stroke per input signal reaches within 1 8 6 6 PT1 PT1 and PT2 PT2 Values PT value indi...

Page 36: ...UTO dZ After the auto calibration the positioner will create deadzone automatically However depending on the valve s period of use hunting or oscillation may occur due to packing friction or other reasons and this function stabilizes the valve by detecting them automatically and increasing the deadzone at the time of its occurrence This will stabilize the valve but deadzone is increased UP DOWN Pr...

Page 37: ...from Hand CAL mode 1 Zero Point PV_ZERO and End Point PV_END for Valves 2 Zero Point TR_ZERO and End Point TR_END for Transmitter 3 Normal Reverse Feedback Signal TR NORM REVS 4 Normal Reverse HART Signal HT NORM REVS 8 7 1 Zero Point PV_ZERO and End Point PV_END for Valves PZ_ZERO adjusts the zero point of the valve and PV_END adjusts the end point of the valve 3 seconds Press UP or DOWN button i...

Page 38: ... end point of the transmitter 20mA feedback This is used when output signal becomes unstable and requires re adjustment or when feedback output signal and actual stroke need to be used differently Fig 8 3 Setting transmitter UP DOWN Zero Adjustment Press UP or DOWN button if the above is not displayed Match feedback signal with 4mA ESC DOWN End Adjustment UP DOWN ESC Match feedback signal with 20m...

Page 39: ...e positioner can be changed to normal or reverse DOWN Press UP or DOWN button if the above is not displayed ESC 3 times 8 7 4 Normal Reverse HART Signal HT NORM REVS Feedback signal of HART communication from the positioner can be changed to normal or reverse DOWN Press UP or DOWN button if the above is not displayed ESC 3 times ...

Page 40: ...R 3 User Characteristics USER SET 4 Tight Shut Open TSHUT OP 5 Tight Shut Close TSHUT CL 6 Split Range Mode SPLIT 8 8 1 Acting Adjustment ACT RA dA RA DA are automatically set by performing AUTO 2 from Auto Calibration However this function is used when the user wants to change RA DA The positioner can be set as Direct Action DA or Reverse Action RA 3 seconds Press UP or DOWN button if the above i...

Page 41: ...aracteristic Adjustment CHAR The valve flow characteristic can be set on the field s requirement There are 4 types of characteristics linear LIN user setting USR quick open QO and equal percentage EQ UP DOWN Press UP or DOWN button if the above is not displayed ESC 3 times ...

Page 42: ...heir application 1 5 points setting can be set with 4mA intervals The initial positions are P0 4mA 0 P1 8mA 25 P2 12mA 50 P3 16mA 75 and P4 20mA 100 but user can change the values to different values User can change all 5 points or only change partially and exit the menu by pressing ESC button Press UP or DOWN button if the above is not displayed Press UP or DOWN button if the above is not display...

Page 43: ...ues to different values User can change all 18 points or only change partially and exit the menu by pressing ESC button Press UP or DOWN button if the above is not displayed Press UP or DOWN button if the above is not displayed UP DOWN or UP DOWN or Repeat step if necessary UP DOWN or UP DOWN or ESC 2 times This function can be activated by selecting CHAR USR mode of above 8 8 2 Valve flow Charact...

Page 44: ...lve and keep it from any leakage UP DOWN Press UP or DOWN button if the above is not displayed ESC 3 times 8 8 5 Tight Shut Close TSHUT CL Tight shut close shows the current value in percentage Input current of 4mA is 0 20mA is 100 If temporary Tight shut close value 100 is set and input current value is below the set value the valve s position is immediately moved to 0 For example if rotary actua...

Page 45: ...e control of input signal as 4 12mA or 12 20mA UP DOWN Press UP or DOWN button if the above is not displayed 4 20mA Control ESC 3 times 4 12mA Control 8 9 View Mode VIEW Displays various information of the positioner 3 seconds DOWN Press UP or DOWN button if the above is not displayed DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN ESC 3 times ...

Page 46: ...s than 1 minute the time will not accumulate 1 st row 4 18 means 4hours and 18minutes 2 nd row 0Y years 0d days 3 12 FULL OP Time required seconds to fully open the current valve from the closed state Saved after AUTO 2 or AUTO 3 Calibration 2 97 FULL CL Time required seconds to fully close the current valve from the opened state Saved after AUTO 2 or AUTO 3 Calibration VM NOR VM dIZ VM REV Displa...

Page 47: ...e adjust the position of the positioner by referring to the following effective range of the feedback lever s angle Linear 30 deg Rotary 90 deg MT ERR H Indicates that due to wrong positioning and installation of the positioner there is a chance that the feedback lever and the positioner s stopper could collide when the lever is at 100 during auto calibration When this error is detected auto calib...

Page 48: ...erminal Buttons will not work while this error message is displayed Check the connection status to the demand input terminal miswiring overcurrent input etc 9 3 Error code which can be checked from View mode Error Code Code Description and Cause Action C Indicated if the deviation between SV and PV is above 10 and is continued for over one minute Indicated when the valve does not operate friction ...

Page 49: ... Full open Full close time is less than 1 second Size of the actuator is too small Can be checked from Error category in View mode Refer to section 8 9 Use orifice and lower the flow rate Or replace the actuator with bigger size G PV is set below 100 Feedback lever s angle use is set too high Can be checked from Error category in View mode Refer to section 8 9 Re position the positioner so that th...

Page 50: ...Smart Positioner YT 2700 Product Manual Ver 1 18 50 10 Main Software Map ...

Page 51: ... 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 ytc co kr Issued 2019 05 14 Copyright Rotork YTC Limited All Rights Reserved ...

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