rotork YT-1200 Series User manual

Pneumatic Positioner PRODUCT MANUAL
YT-1200 Series
VERSION 1.18
Rotork YTC Limited

Pneumatic Positioner
YT-1200 series 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 external explosion proof product, not for positioner).....................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
2.5.1 Positioner Specification ....................................................................................................................9
2.5.2Specification of External SPTM(Smart Position Transmitter) option............................................. 10
2.5.3 Specification of External L/S 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-6V (External).................................................................................................. 15
2.7.4 YT-1000R + YT-870 (External)...................................................................................................... 15
2.8 Product Dimension ............................................................................................................................ 16
2.8.1 YT-1200L....................................................................................................................................... 16
2.8.2 YT-1200R (Fork Lever type).......................................................................................................... 16
2.8.3 YT-1200R (Namur type) ................................................................................................................ 17
2.8.4 YT-1200R (Dome indicator)........................................................................................................... 17
2.8.5 YT-1200R (External SPTM-6V)..................................................................................................... 18
2.8.6 YT-1000R (External Limit Switch, YT-870).................................................................................... 19
3principle of positioner movement.......................................................................................................... 20
3.1 Linear Positioner................................................................................................................................ 20
3.2 Rotary Positioner ............................................................................................................................... 21
4Installation................................................................................................................................................ 22
4.1 Safety................................................................................................................................................. 22
4.2 Tools for installation........................................................................................................................... 22
4.3 Linear positioner Installation.............................................................................................................. 23
4.3.1 Preparing Bracket for the positioner.............................................................................................. 23
4.3.2 Installation Steps ........................................................................................................................... 24

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YT-1200 series Product Manual
Ver. 1.18 3
4.4 Rotary positioner Installation ............................................................................................................. 28
4.4.1 Components................................................................................................................................... 28
4.4.2 Rotary Bracket Information............................................................................................................ 29
4.4.3 Rotary positioner Installation Steps............................................................................................... 30
5Connection - Air....................................................................................................................................... 32
5.1 Safety................................................................................................................................................. 32
5.2 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
6Adjustments ............................................................................................................................................. 37
6.1 Ra or Da Setting ................................................................................................................................ 37
6.1.1 Linear Positioner............................................................................................................................ 37
6.1.2 Rotary positioner............................................................................................................................ 38
6.2 Adjustment - Zero Point..................................................................................................................... 39
6.3 Adjustment - Span ............................................................................................................................. 40
6.4 Adjustment –A/M switch (Auto/Manual)............................................................................................ 41
6.5 Orifice Installment.............................................................................................................................. 42
7Maintenance ............................................................................................................................................. 43
7.1 Pilot valve........................................................................................................................................... 43
7.2 Seals.................................................................................................................................................. 43
8Troubleshooting....................................................................................................................................... 44

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 4
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.
➢For detailed warranty information, please contact the corresponding local Rotork YTC Limited
office or main office in South Korea.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 5
1.3 Explosion Proof Warning (Only for external explosion proof product, not for positioner)
Please ensure the unit is being used and installed in conformity with local, regional, and national
explosion proof 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.
➢If wires are connected to external explosion-proof products installed on top of the positioner, the
power must be completely disconnected before opening the cover. When opening the cover, make
sure to check that there is no current or voltage on any part of the product. If any doubts, please
allow sufficient time for the remaining current 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 is not being used.
➢Ring terminal with surface area of more than 0.195 mm2 with M4 spring washer should be used
to connect the power.
➢For external ground terminal, ring terminal with surface area of more than 5.5 mm2 should be used.
➢There is risk of explosion due to static electricity charge. Static electricity charge may develop
when cleaning the product with a dry cloth. It is imperative to avoid static electricity charge in the
hazardous environment. If cleaning the surface of the product is needed, must use wet clothes.
➢To meet explosion-proof marking information and ingress protection of IP66, use certified Ex-cable
glands and Ex-plugs.
➢If you need additional information about the values of the flameproof joints, contact Rotork YTC
Limited directly.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 6
2 Product Description
2.1 General
YT-1200 series Pneumatic Positioner accurately controls valve stroke in response to an input signal
pressure of 0.02 ~ 0.1 MPa(0.2 ~ 1 bar) from the controller.
2.2 Main Features and Functions
➢It is compatible with most of controllers.
➢Response time is very fast and accurate.
➢Split range 0.02 ~ 0.06 MPa or 0.06 ~ 0.1 mA can 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.
➢Orifices can be installed even in the field to minimize the hunting occurrence and optimize
operating conditions.
➢A/M switch can be used to direct supply air to the actuator or to manually operate the positioner
or valve without any signal.
➢It has IP66 ingress protection grade.
➢Polyester powder coating resists the corrosion process.
➢Maintenance of the positioner is easy because of modularized inner structure.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 7
2.3 Label Description
•MODEL : Indicates the model number and additional options.
•SERIAL NUMBER : Indicates unique serial number.
•MONTH.YEAR : Indicates manufactured month and year.
•AMBIENT TEMP. : Indicates the allowable ambient 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: Sticker label (EAC)
※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.
※For information on the nameplate of external product, please check the corresponding product
manual.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 8
2.4 Product Code
YT-1200 1 2 3 4 5 6 7
1 Motion type
L :
R :
Linear
Rotary
2 Acting type
S :
D :
Single
Double
3 Lever Type
Linear
1 :
2 :
3 :
4 :
10 ~ 40 mm
30 ~ 70 mm
60 ~ 100 mm
100 ~ 150 mm
Rotary
1 :
2 :
3 :
4 :
5 :
M6 x 34L
M6 x 63L
M8 x 34L
M8 x 63L
NAMUR
4 Orifice Type
1 :
2 :
3 :
Ø1
Ø2
None
5 Air Connection Type
1 :
2 :
Rc 1/4
1/4 NPT
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(Flameproof enclosure) 2)
Limit switch – YT-850(Non-explosion) 3)
Limit switch – YT-870(Flameproof enclosure) 4)
4 to 20 mA feedback + Limit switch – YT-870(Flameproof
enclosure) 5)
If you want EAC products, put “EAC” in a purchase order.
1) 2) these options are only available for “S”, “L” in 6 operating temperature.
3) 4) 5) these options are only available for “S” in 6 operating temperature.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 9
2.5 Product Specification
2.5.1 Positioner Specification
Model
YT-1200
Housing Material
Aluminum
Motion Type
Linear
Rotary
Acting Type
Single
Double
Single
Double
Input Signal pressure
0.02 ~ 0.1 MPa (0.2 ~ 1 bar)
Supply Pressure
0.14 ~ 0.7 MPa (1.4 ~ 7 bar)
Stroke
10 ~ 150 mm
55 ~ 100°
Air Connection
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
± 1 % F.S.
Sensitivity
± 0.2 % F.S.
± 0.5 % F.S.
Repeatability
± 0.5 % F.S.
Flow Capacity
80 LPM (Sup. = 0.14 MPa)
Air Consumption
2.5 LPM (Sup. = 0.14 MPa @ idle)
Weight
1.7 kg (3.1 lb)
Painting
Polyester Powder Coating
Tested under ambient temperature of 20 °C, absolute pressure of 760 mmHg, and humidity of 65 %.
Please contact Rotork YTC Limited for detailed testing specification.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 10
2.5.2 Specification of External SPTM(Smart Position Transmitter) option
External SPTM Model
SPTM-5V
SPTM-6V
Explosion Proof
Non-explosion
Flameproof enclosure.
Refer to 2.6 Certifications.
Housing Material
Aluminum
Input Stroke
55 ~ 100°
Output Signal
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
Ambient
Temperature
Explosion proof
-
Refer to 2.6.2
Operating
-40 ~ 85 °C(-40 ~ 185 °F)
Weight
0.6 kg (1.3 lb)
1.3 kg (2.9 lb)
Painting
Polyester Powder Coating
Tested under ambient temperature of 20 °C, absolute pressure of 760 mmHg, and humidity of 65 %.
Please contact Rotork YTC Limited for detailed testing specification.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 11
2.5.3 Specification of External L/S option
External L/S Model
YT-850
Housing Material
Aluminum
Switch Type
Mechanical Type (2 x SPDT)
Model No. &
Manufacturer
SS5GL
(OMRON)
Switch Rating
AC
250 V 3 A,
125 V 5 A
DC
250 V 0.2 A, 125 V 0.4 A,
30 V 4 A, 14 V 5 A, 8 V 5 A
Terminal
8 Points
Conduit Entry
1/2 NPT or G 1/2 or M20x1.5P
Ingress Protection
IP67
Explosion Proof
Non-explosion
Ambient
Temperature
-25 ~ 70 °C(-13 ~ 158 °F)
Weight
880 g (1.94 lb)
Painting
Polyester Powder Coating
Tested under ambient temperature of 20 °C, absolute 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)
Inductive Proximity Sensor
Model No. &
Manufacturer
SS5GL
(OMRON)
PS17-5DNU
(Autonics)
Switch Rating
AC
250 V 3 A,
125 V 5 A
-
DC
250 V 0.2 A, 125 V 0.4 A,
30 V 4 A, 14 V 5 A, 8 V 5 A
12 ~ 24 V
Terminal
8 Points
Conduit Entry
G 3/4 (for CCC, 1/2 NPT)
Ingress Protection
IP67
Explosion Proof
Flameproof enclosure. Refer to “2.6.5 Certifications”
Ambient
Temperature
-20 ~ 60 °C(-4 ~ 140 °F)
Weight
1.5 Kg (3.3 lb)
Painting
Polyester Powder Coating
Tested under ambient temperature of 20 °C, absolute pressure of 760 mmHg, and humidity of 65 %.
Please contact Rotork YTC Limited for detailed testing specification.

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 12
2.6 Certifications of External products
※ All certifications below are posted on Rotork YTC Limited homepage(www.ytc.co.kr).
2.6.1 SPTM-5V
➢Electromagnetic Compatibility (EMC)
- EMC directive 2014/30/EC from April 2016
- EC Directive for CE conformity marking
2.6.2 SPTM-6V
➢KC (Korea)
Rating : Ex d IIC T6 IP67
Certification No. : 12-KB2BO-0313
Ambient temperature : -40 ~ 60°C(-40 ~ 140°F)
➢EAC (TRCU)
Rating : 1Ex d IIC T6 Gb IP67
Certification 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
➢Electromagnetic Compatibility (EMC)
- EMC directive 2014/30/EC from April 2016
- EC Directive for CE conformity marking
2.6.4 YT-870
➢KC (Korea)
Rating : Ex d IIC T6
Certification No. : 12-KB2BO-0093
Ambient temperature : -20 ~ 60°C(-4 ~ 140°F)
➢ATEX
Rating : II 2G Ex db IIC T6 Gb, II 2D Ex tb IIC T85°C Db
Certification No. : EPS 16 ATEX 1 140 X
Ambient temperature : -20 ~ 60°C(-4 ~ 140°F)
➢IECEx
Rating : Ex db IIC T6 Gb, Ex tb IIIC T85°C Db
Certification No. : IECEx EPS 14.0053X
Ambient temperature : -20 ~ 60°C(-4 ~ 140°F)

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 13
➢CSA
Rating : Ex db IIC T6
Class I, Zone 1, AEx db IIC T6
Class II, Division 1, Groups E, F and G; Ex 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. : 2020322307000620
Ambient temperature : -20 ~ 60°C(-4 ~ 140°F)
➢Electromagnetic Compatibility (EMC)
- EMC directive 2014/30/EC from April 2016
- EC Directive for CE conformity marking

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

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)

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)

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)

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 18
2.8.5 YT-1200R (External SPTM-6V)

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 19
2.8.6 YT-1000R (External Limit Switch, YT-870)

Pneumatic Positioner
YT-1200 series Product Manual
Ver. 1.18 20
3 principle of positioner movement
3.1 Linear Positioner
Fig. 3-1: Linear positioner with an actuator
When INPUT SIGNAL PRESSURE increases to open the valve, ①the bellows stretches and pushes
②the flapper to the opposite side of ③the nozzle. The gap between ③the nozzle and ②the flapper
becomes wider and from inner part of ④the pilot, air inside ⑨the chamber is exhausted through
③the nozzle. Due to this effect ⑤the spool moves to the right. Then, ⑦the seat which was blocked
by ⑧the poppet pushes the poppet away and supplied pressure (air) goes through ⑦the seat and
OUT1 Port and enters into ⑩the chamber of the actuator. Then ⑩chamber’s pressure will increase
and when there is enough pressure inside the chamber to push ⑪the actuator’s spring, ⑫actuator’s
stem will start to go down and through the feedback lever, stem’s linear motion will be converted to
⑭span lever’s rotary motion. This ⑭span lever’s rotary motion will then once again rotate ⑮the
span and pulls the spring. When the valve’s position reaches to given input signal pressure, ⑯span
spring’s pulling force and force of ①bellows will be balanced and move ②the flapper back its original
position to reduce the gap between ③the nozzle. The amount of air being exhausted through ③the
nozzle will reduce and ⑨the chamber pressure will increase again. ⑤Spool will move back to its
original position on the left and ⑧the poppet will also move in same direction blocking ⑦the seat to
stop the air coming into the ⑩chamber through the SUPPLY. As a result, the actuator will stop
operating and the positioner will return to its normal condition.