rotork YT-2700 User manual

SMART POSITIONER PRODUCT MANUAL
YT-2700
Rotork YTC Limited
VERSION 1.18

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YT-2700 Product Manual
Ver. 1.18 2
Contents
1Introduction.................................................................................................................................................4
1.1 General Information for the users.........................................................................................................4
1.2 Manufacturer Warranty.........................................................................................................................4
1.3 Explosion Proof Warning (Only for Intrinsic safety type positioners)....................................................5
2Product Description ...................................................................................................................................6
2.1 General.................................................................................................................................................6
2.2 Main Features and Functions ...............................................................................................................6
2.3 Label Description..................................................................................................................................7
2.4 Product Code........................................................................................................................................8
2.5 Product Specification............................................................................................................................9
2.6 Certifications...................................................................................................................................... 10
2.7 Parts and Assembly........................................................................................................................... 10
2.8 Product Dimension ............................................................................................................................ 11
3Installation................................................................................................................................................ 14
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
4Connection - Air....................................................................................................................................... 24
4.1 Safety................................................................................................................................................. 24
4.2 Supply Pressure Condition ................................................................................................................ 24
4.3 Piping Condition................................................................................................................................. 24
5Connection –Power................................................................................................................................ 25
5.1 Safety................................................................................................................................................. 25
5.2 Connection......................................................................................................................................... 26
5.3 Ground............................................................................................................................................... 26
6Adjustments............................................................................................................................................. 27
6.1 Variable Orifice Adjustment............................................................................................................... 27
6.2 Manual buttons .................................................................................................................................. 27
7Optional Sub-PCB Installment................................................................................................................ 28
7.1 Installation steps................................................................................................................................ 29
8Auto Calibration and PCB Operation..................................................................................................... 30
8.1 Warning.............................................................................................................................................. 30
8.2 Button Description ............................................................................................................................. 30
8.3 Run Mode (RUN)............................................................................................................................... 31

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8.4 Auto Calibration mode (AUTO CAL).................................................................................................. 31
8.4.1 AUTO1 Calibration (AUTO1)......................................................................................................... 32
8.4.2 AUTO2 Calibration (AUTO2)......................................................................................................... 32
8.4.3 AUTO3 Calibration (AUTO3)......................................................................................................... 32
8.5 Manual Mode (MANUAL)................................................................................................................... 33
8.6 Parameter Mode (PARAM)................................................................................................................ 33
8.6.1 Dead-Zone (dEAdZONE, %) ......................................................................................................... 34
8.6.2 P1 Value (KP1).............................................................................................................................. 34
8.6.3 D1 Value (Kd1) .............................................................................................................................. 35
8.6.4 P2 (KP2) and D2 (Kd2) values ...................................................................................................... 35
8.6.5 P_ (KP_) and D_ (Kd_) Values...................................................................................................... 35
8.6.6 PT1 (PT1) and PT2 (PT2) Values.................................................................................................. 35
8.6.7 Period T (PERIOd T) ..................................................................................................................... 36
8.6.8 Auto DZ (AUTO dZ)....................................................................................................................... 36
8.7 Hand Calibration Mode (HAND CAL) ................................................................................................ 37
8.7.1 Zero-Point (PV_ZERO) and End-Point (PV_END) 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 Close (TSHUT CL)....................................................................................................... 44
8.8.6 Split Range Mode (SPLIT)............................................................................................................. 45
8.9 View Mode (VIEW) ............................................................................................................................ 45
9Error and Warning Code ......................................................................................................................... 47
9.1 Error code which is displayed during Auto calibration....................................................................... 47
9.2 Error code which is displayed while using the product...................................................................... 48
9.3 Error code which can be checked from View mode .......................................................................... 48
9.4 Warning code which can be checked from View mode..................................................................... 49
10 Main Software Map .................................................................................................................................. 50

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1 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.
➢In case of Fail Freeze product, it keeps the position of current valve in case of input current
signal and pneumatic failure. However, please do not leave it in that state for a long time and

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take immediate action to restore the system. There is no fault in the positioner, but it is often
reported that the valve is out of position due to an unexpected leak in the pipe or actuator.
➢For detailed warranty information, please contact the corresponding local Rotork YTC Limited
office or main office in South Korea.
1.3 Explosion Proof Warning (Only for Intrinsic safety type positioners)
Please ensure the unit is being used and installed in conformity with local, regional, and national
explosion proof within the proper safety barrier environment.
➢Refer to “2.6 Certifications”
➢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 0.195mm2with M4 spring washer should be used
to connect the power.
➢For external ground terminal, ring terminal with surface area of more than 5.5mm2should be
used.
➢Some of the enclosure parts are made of non-metallic materials. To prevent the risk of
Electrostatic sparking, clean the enclosure only with a damp cloth.
➢The product must be installed in such a manner as to minimize the risk of impact or friction with
other metal surfaces.
➢For Intrinsically Safe installations, the product must be connected to suitably rated intrinsically
safe equipment, and must be installed in accordance with applicable intrinsically safe installation
standards.

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2 Product Description
2.1 General
YT-2700 Smart Valve Positioner accurately controls valve stroke in response to an input signal of
4~20mA from the controller. Built-in micro-processor optimizes the positioner’s performance and
provides unique functions such as Auto-Calibration, PD Control, and HART Protocol
Communications.
2.2 Main Features and Functions
➢When Input signal fails, Positioner keeps the current position of the valve stroke without any
additional device. (Fail Freeze option)
➢LCD display enables users to monitor the positioner status.
➢User will easily understand the method of using 4 buttons because it work same in all versions of
firmware interfaces.
➢Positioner operates normally even there are sudden changes in supply pressure and / or high
vibration environment.
➢The method of Auto Calibration is very 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 feedback signal.
➢Different valve characteristics can be adjusted –Linear, Quick Open, Equal Percentage, and
User Set which user can make 5 points or 18 points characterizations.
➢Tight Shut –Close and Shut - Open can be set.
➢PD parameters can be adjusted in the field without any additional communicator.
➢Split range 4~12mA or 12~20mA can be set.
➢Operating temperature for positioners is -30 ~ 80℃(Please check certified explosion proof
temperature)
➢Hand calibration function can set Zero point or End point manually.
➢It has IP66 protection grade.
➢Epoxy polyester powder coating resists the corrosion process.
➢Maintenance of the positioner is easy because of modularized inner structure.

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2.3 Label Description
•MODEL : Indicates the model number and additional options.
•EXPLOSION PROOF : Indicates certified explosion proof grade.
•INPUT SIGNAL : Indicates input signal range.
•OPERATING TEMP. : Indicates the allowable operating temperature.
•SUPPLY PRESSURE : Indicates the supply 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 apply volatile solvent (hardener of instant adhesive, acetone, WD-40, etc.) to
the sticker nameplate. Printed contents may be erased.

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2.4 Product Code
YT-2700 1 2 3 4 5 6 7 8
1 Motion Type
L :
R :
Linear
Rotary
2 Acting type
S :
Single
3 Explosion Proof
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

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2.5 Product Specification
Model
YT-2700
Housing Material
Aluminum
Motion Type
Linear
Rotary
Acting Type
Single / Double
Input Signal
4~20mA DC
Minimum Current Signal
3.5mA(Standard), 3.8mA(HART Included)
Supply Pressure
0.14 ~ 0.7 MPa (1.4 ~ 7 bar)
Stroke
10 ~ 150 mm
0 ~ 90°
Impedance
Max. 500Ω @ 20mA DC
Air Connection
Rc 1/4 or 1/4 NPT
Gauge Connection
Rc 1/4 or 1/8 NPT
Conduit Entry
G 1/2 or 1/2 NPT or M20x1.5P
Ingress Protection
IP66
Explosion 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 Communication (Rev. 5)
Feedback Signal (Option)
4~20mA (DC 9~28V)
Weight
0.82 Kg (1.8 lb)
Painting
Epoxy Polyester Powder Coating
Tested under ambient temperature of 20°C,, absolute pressure of 760mmHg, and humidity of 65%.
Please contact Rotork YTC Limited for detailed testing specification.

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2.6 Certifications
※All certifications below 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

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2.8 Product Dimension
Fig. 2-2: YT-2700L

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Fig. 2-3: YT-2700R (Fork lever type)

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Fig. 2-4: YT-2700R (Namur Type)

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3 Installation
3.1 Safety
When installing a positioner, please ensure to read and follow safety instructions.
➢Any input or supply pressures to valve, actuator, and / or to other related devices must be turned
off.
➢Use bypass valve or other supportive equipment to avoid entire system “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 of a vent cover
3.2 Tools for installation
➢Hex key set for hex socket cap bolts
➢(+) & (-) Screw drivers
➢Spanners for hexagonal-head bolts

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3.3 Linear positioner 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

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Before proceeding with the installation, ensure following components are available.
➢Positioner
➢Feedback lever and lever spring
➢M5 Square nut and wrench head bolt (fastening feedback lever to a main shaft)
➢Bracket, bolts and washers for positioner or sensor –not supplied with the positioner
➢Connection bar –not supplied with the positioner
3.3.1 Safety
Proper bracket must be made in order to adapt the positioner on the 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 may cause poor linearity
3.3.2 Linear positioner Installation Steps
1. Assemble the positioner with the bracket made in previous step by fastening the bolts. The bolt
size is M6 x 1P.
Fig. 3-4: A bracket example for a right yoke Fig. 3-5: A bracket example for a left yoke

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2. Attach the positioner with the bracket to the actuator yoke
–DO NOT TIGHTEN THE BRACKET COMPLETELY.
Fig. 3-6: Installing the positioner on a right yoke Fig. 3-7: Installing the positioner 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 actuator to position the valve at 50%

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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 below left figure. If it is located downward from
the lever spring as shown 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 poor
linearity.
Fig. 3-10:Feedback lever and valve stem on a right yoke

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Fig. 3-11: Feedback lever and valve stem on a left yoke
7. Check the valve stroke. The stroke numbers are 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.

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8. After installing the positioner, operate the valve from 0% to 100% stroke by using direct air to the
actuator. On both 0% and 100%, the 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.