rotork YT-3400 User manual

SMART POSITIONER PRODUCT MANUAL
YT-3400 / 3450 SERIES (New NCS type)
VERSION 2.06
YT-3400
YT-3450
Terminal appearance
Rotork YTC Limited

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 2
Contents
1Introduction.................................................................................................................................................6
1.1 General Information for the users.........................................................................................................6
1.2 Manufacturer Warranty.........................................................................................................................6
1.3 Explosion Proof Warning & Specific Conditions of Use .......................................................................7
2Product Description ...................................................................................................................................8
2.1 General.................................................................................................................................................8
2.2 Main Features and Functions...............................................................................................................8
2.3 Label Description..................................................................................................................................9
2.4 Product Code..................................................................................................................................... 15
2.5 Product Specification......................................................................................................................... 16
2.6 Specification of Digital Input, Digital Output ...................................................................................... 17
2.7 Certifications...................................................................................................................................... 17
2.8 Parts and Assembly........................................................................................................................... 19
2.9 Product Dimension ............................................................................................................................ 20
2.9.1 YT-3400......................................................................................................................................... 20
2.9.2 YT-3450......................................................................................................................................... 21
3Installation................................................................................................................................................ 22
3.1 Safety................................................................................................................................................. 22
3.2 Tools for installation........................................................................................................................... 23
3.3 Linear positioner Installation.............................................................................................................. 23
3.3.1 Safety............................................................................................................................................. 23
3.3.2 Positioner Installation Steps .......................................................................................................... 24
3.4 Rotary positioner Installation ............................................................................................................. 27
3.4.1 Components................................................................................................................................... 27
3.4.2 Rotary Bracket Information............................................................................................................ 28
3.4.3 Rotary positioner Installation Steps............................................................................................... 29
4Connection - Air....................................................................................................................................... 31
4.1 Safety................................................................................................................................................. 31
4.2 Supply Pressure Condition................................................................................................................ 31
4.3 Piping Condition................................................................................................................................. 31
4.4 Connection –Piping with actuator..................................................................................................... 32
4.4.1 Single acting actuator .................................................................................................................... 32
4.4.2 Double acting actuator................................................................................................................... 32
5Connection – Power ................................................................................................................................ 33
5.1 Safety................................................................................................................................................. 33
5.2 Terminal overview.............................................................................................................................. 34
5.2.1 Ground........................................................................................................................................... 37
6Adjustments ............................................................................................................................................. 38
6.1 A/M switch adjustment....................................................................................................................... 38

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 3
6.2 Variable Orifice Adjustment............................................................................................................... 38
7Maintenance ............................................................................................................................................. 39
7.1 Supply air........................................................................................................................................... 39
7.2 Seals.................................................................................................................................................. 39
8Auto Calibration and PCB Operation..................................................................................................... 40
8.1 Warning.............................................................................................................................................. 40
8.2 LCD display and buttons.................................................................................................................... 40
8.2.1 LCD display and symbols .............................................................................................................. 40
8.2.2 Button and function........................................................................................................................ 41
8.3 Menu levels........................................................................................................................................ 42
8.4 Run Mode (RUN)............................................................................................................................... 43
8.5 Configuration and Operation.............................................................................................................. 44
8.6 Calibration (CALIb) ............................................................................................................................ 49
8.6.1 Acting Type (SINGLE / dOUBLE).................................................................................................. 49
8.6.2 Auto Calibration 1 (AUTO 1).......................................................................................................... 50
8.6.3 Auto Calibration 2 (AUTO 2).......................................................................................................... 50
8.6.4 Travel Zero (TVL ZERO) and Travel end (TVL ENd).................................................................... 51
8.7 Manual Operation (MAN OPER)........................................................................................................ 52
8.7.1 Manual Operation by Set position (MAN SP) ................................................................................ 52
8.7.2 Manual Operation by Manipulator Value (MAN MV) ..................................................................... 53
8.8 Control Parameters (CTL PARM)...................................................................................................... 54
8.8.1 Dead Band (dEAdbANd)................................................................................................................ 54
8.8.2 Forward P parameter (KP UP) and reverse P parameter (KP dN)................................................ 55
8.8.3 Forward Integral time parameter (TI UP) and reverse Integral time parameter (TI dN)................ 55
8.8.4 Forward D parameter (Kd UP) and reverse D parameter (Kd dN)................................................ 56
8.8.5 GAP Parameter (GAP) .................................................................................................................. 56
8.8.6 GAP P parameter (GP).................................................................................................................. 57
8.8.7 GAP I parameter (GI)..................................................................................................................... 57
8.8.8 GAP D parameter (Gd).................................................................................................................. 57
8.8.9 Auto Dead band Mode (AUTO db) ................................................................................................ 58
8.8.10 Performance Mode (PER) ......................................................................................................... 58
8.9 Input Configuration (IN CFG)............................................................................................................. 59
8.9.1 Signal Direction (SIG NORM / REVS)........................................................................................... 59
8.9.2 Split Range Mode (SPLIT)............................................................................................................. 60
8.9.3 Custom Split Range Zero (CST ZERO)......................................................................................... 60
8.9.4 Custom Split Range End (CST ENd)............................................................................................. 61
8.9.5 Valve Flow Characterization Curves (CHAR)................................................................................ 61
8.9.6 User Set Characterization 5 Points (U5) ....................................................................................... 62
8.9.7 User Set Characterization 21 Points (U21) ................................................................................... 63
8.9.8 Tight Shut Open (TSHUT OP)....................................................................................................... 64

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 4
8.9.9 Tight Shut Close (TSHUT CL) ....................................................................................................... 65
8.9.10 Target Position Ramp Up Rate (RAMP UP) and Target Position Ramp Down Rate (RAMP dN)
66
8.9.11 Digital Input Function (dIF) ........................................................................................................ 67
8.9.12 Digital Input Logic (dI LOGIC).................................................................................................... 68
8.10 Output Configuration (OUT CFG)...................................................................................................... 69
8.10.1 Position Transmitter Direction (PTM NORM / REVS)................................................................ 69
8.10.2 Position Transmitter Zero / End (PTM ZERO / ENd)................................................................. 70
8.10.3 HART Feedback Direction (HT NORM / REVS)........................................................................ 71
8.10.4 Back Calculation (bACKCAL oFF / on)...................................................................................... 72
8.10.5 Limit Switch Mode (LS MOdE oFF/ on)..................................................................................... 72
8.10.6 Digital Output Function 0 / 1 (dO1 / dO2).................................................................................. 74
8.10.7 Digital Output 1 Logic / Digital Output 2 Logic (dO1 LOGIC HI / Lo, dO2 LOGIC HI / Lo)........ 75
8.10.8 Analog Output Function (AOF).................................................................................................. 76
8.10.9 Analog Output Logic (AO LOGIC Lo / HI).................................................................................. 77
8.11 Device Configuration (dEV CFG)....................................................................................................... 78
8.11.1 Action Setting (ACT REVS / dIR)............................................................................................... 78
8.11.2 Linear Lever Type (LEVT STd / AdT)........................................................................................ 78
8.11.3 Linear Interpolation (ITP oFF / on)............................................................................................. 79
8.11.4 Lock of Parameters (Write Protect, W UNLOCK / LOCK)......................................................... 79
8.11.5 Actual Position View Mode (View Mode, VI NORM / REVS) .................................................... 80
8.11.6 Polling address setting (POL AddR).......................................................................................... 80
8.11.7 Factory Reset (dEFAULT oFF / on)........................................................................................... 81
8.11.8 Positioner Self-Test (SELFTEST).............................................................................................. 82
8.12 Diagnosis Mode (dIAGNd)................................................................................................................. 83
8.12.1 Default Alarm Settings............................................................................................................... 83
8.12.2 Process Status (PS) .................................................................................................................. 85
8.12.3 Device Status (dS)..................................................................................................................... 86
8.12.4 View Monitoring Counts (VI CNTS)........................................................................................... 88
8.12.5 Diagnostic Limit Configuration (LIMT CFG)............................................................................... 89
8.12.6 Reset Alarm Status (RST ALRM oFF / on)................................................................................ 90
8.12.7 View Event Log (EVT LOG)....................................................................................................... 91
8.12.8 Partial Stroke Test Record (View PST Result Record, PST RSLT).......................................... 92
8.12.9 PST Configuration (PST CFG) .................................................................................................. 93
8.12.10 Run PST (PST NOW)................................................................................................................ 94
8.12.11 Periodic PST Test (PST Schedule, PST SCHd oFF / on)......................................................... 95
8.13 Position information (INFO) ............................................................................................................... 95
8.14 Error codes during automatic calibration........................................................................................... 97
8.15 Status and Alarm Code...................................................................................................................... 98
9Main Software Map ................................................................................................................................ 102

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 5

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 6
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.

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 7
1.3 Explosion Proof Warning & Specific Conditions of Use
Please ensure the unit is being used and installed in explosion proof certified environment.
➢The positioners are Explosion proof construction for internal pressure.
For detail information, refer to “2.7 Certifications”
➢Explosion proof type of cables and gaskets should be used, when explosion gases are present at
the installation site.
➢Keep cover tight while circuits are alive.
➢Power should be turned off completely when opening product’s cover. When opening the cover,
ensure that there is no power remaining in any electrical parts nearby.
➢The positioners have 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 1.25 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 electro-static 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.
➢Seal required within 50 mm of enclosure.
➢Consult the manufacturer for dimensional information on the flameproof joint for repair.
➢To maintain IP66 rating, when installing threaded conduit, use type PTFE tape according to
instructions.
➢Special conditions for safe use :
The ambient temperature range is from -20 °C to +70 °C for temperature class T6(T85 °C ) or -
20°C to +80 °C for temperature class T5(T100 °C).
With silicone gasket material the minimum ambient temperature can be extended to -40 °C.
Hazardous area with carbon disulfide shall be excluded.

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 8
2 Product Description
2.1 General
The smart positioner accurately controls valve stroke in response to an input signal of 4 ~ 20 mA from
the controller. Built-in micro-processor optimizes the positioner’s performance and provides unique
functions such as Auto-Calibration, PID Control, and HART Protocol Communications.
2.2 Main Features and Functions
➢The LCD monitoring and button operation can be performed without opening the cover which
allows use of various functions of the positioner such as parameter adjustment in explosive gas
atmosphere.
➢User will easily understand the method of using 4 buttons because it works same in all mode of
firmware interfaces.
➢When unexpected situation like momentary blackout happens, our positioner boot-time only take
0.5 second and this can minimize the travel of valve which consequentially increase the safety of
system.
➢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 orifice can be used even to minimize the hunting occurrence and optimize operating
conditions.
➢Various information about positioner can be processed by HART communication(HART Option)
➢"EDD and FDI files required for HART communication can be downloaded from our website
(www.ytc.co.kr) or FieldComm Group (www.fieldcommgroup.org). When using the FieldComm
Group website, please search for the Product Name on YT-3XXX."
➢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 or 21 points characterizations.
➢Tight Shut – Close and Shut - Open can be set.
➢PID parameters can be adjusted in the field without any additional communicator.
➢A/M switch can be used to direct supply air to the actuator or to manually operate the positioner
or valve without any signal.
➢Split range 4 ~ 12 mA or 12 ~ 20 mA can be set.
➢Operating temperature for positioners is -30 ~ 85 °C or -40 ~ 85 °C (Please check certified
explosion proof ambient temperature)
➢Hand calibration function can set Zero point or End point manually.
➢It has Type 4, 4X(CSA), IP66 protection grade.

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 9
➢Polyester powder coating resists the corrosion process. (except YT-3450).
➢Maintenance of the positioner is easy because of modularized inner structure.
➢SIL2 certified.(For more information, see SIL Safety Instruction on homepage)
2.3 Label Description
•MODEL : Indicates the model number of the positioner.
•SUFFIX : Indicates any options.
•SERIAL NO. : Indicates unique serial number.
•MONTH.YEAR : Indicates manufactured month and year
•EXPLOSION PROOF RATING : Indicates certified explosion proof grade
•INGRESS PROTECTION : Indicates enclosure protection grade.
•INPUT : Indicates input signal range.
•AMBIENT TEMP. : Indicates the allowable ambient temperature.
•SUPPLY : Indicates the supply pressure range.
Fig. L-1: YT-3400, 3450 sticker label
※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.

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 10
Fig. L-2: YT-3400 metal label Fig. L-3: YT-3400 metal label (KCs)
(ATEX, IECEx, NEPSI)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 11
Fig. L-4: YT-3400 labels (FM, CSA) Fig. L-5: YT-3450 metal label
(FM, CSA)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 12
Fig. L-6: YT-3400, 3450 labels (EAC) Fig. L-7: YT-3450 metal label
(ATEX, IECEx, KCs, NEPSI)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 13
Fig. L-8: YT-3400, 3450 labels (INMETRO)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 14
Fig. L-9: YT-3400 labels (CCC) Fig. L-10: YT-3450 metal label (CCC)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 15
2.4 Product Code
YT-3400 / 3450 series follows suffix symbols as follows.
YT-3400 / 3450 1 2 3 4 5 6 7 8
1 Motion Type
L :
R :
Linear
Rotary
2 Acting type
S :
D :
Single
Double
3 Explosion Proof
1) C :
A :
E :
Z :
ATEX, IECEx, INMETRO, KCs, NEPSI
FM, CSA
EAC
CCC
4 Lever Type
Linear
1 :
2 :
3 :
4 :
10 ~ 40 mm
20 ~ 70 mm
50 ~ 100 mm
100 ~ 150 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 (N/A for FM & CCC, N/A for YT-3450)
G 1/2 – 1/4 NPT (N/A for FM & CCC)
G 1/2 – G 1/4 (N/A for FM & CCC, N/A for YT-3450)
M20x1.5P – 1/4 NPT (N/A for YT-3450)
1/2 NPT – 1/4 NPT
6 Communication
0 :
2 :
2) 5 :
None
+ HART
+ HART with Enhanced Diagnostics & DI / DO
※ Digital Output(DO) operation is configurable in
synchronization with specific event or alarm including
limit switch function.
7 Option
0 :
1 :
2 :
3 :
None
+ 4 to 20 mA feedback
+ Limit Switch 3)
+ 4 to 20 mA feedback + Limit Switch 4)
8 Operating Temp.
(Non-explosion proof) 5)
S :
L :
A :
-30 ~ 85 °C (-22 ~ 185 °F, except EAC)
-40 ~ 85 °C (-40 ~ 185 °F)
-55 ~ 85 °C (-67 ~ 185 °F, only EAC)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 16
1) Please put the name of certificate in a purchase order.
2) DO (Digital Output) already is included in this option, so it can’t be selected with 2 or 3 of 7 Option
together.
3) 4) Limit switch: DC 24V (50 mA) and transistor type.
5) This option is just the normal operating temperature of the product and is not related to explosion proof
temperature. See “2.7 Certificates” for explosion proof temperature.
2.5 Product Specification
Model
YT-3400
YT-3450
Housing Material
Aluminum
Stainless Steel 316
Motion Type
Linear
Rotary
Linear
Rotary
Acting Type
Single / Double
Input Signal
4 ~ 20 mA DC
Minimum Current Signal
3.2 mA(Standard) or 3.8 mA(HART Included)
Supply Pressure
0.14 ~ 0.7 MPa (1.4 ~ 7 bar)
Stroke
10~150 mm
55 ~ 110°
10~150 mm
55 ~ 110°
Impedance
Max. 450 Ω @ 20 mA DC
Air Connection
Rc 1/4 or G 1/4 or 1/4 NPT
1/4 NPT
Gauge Connection
Rc 1/8 or 1/8 NPT
1/8 NPT
Conduit Entry
G 1/2(N/A for FM & CCC) or
1/2 NPT or M20x1.5P
G 1/2(N/A for FM & CCC) or
1/2 NPT
Ingress Protection
Type 4, 4X(CSA), IP66
Explosion Proof
Flameproof enclosure. Refer to “2.7 Certifications”
Operating
Temperature
Standard Type
-30 ~ 85 °C (-22 ~ 185 °F, except EAC explosion proof)
Low Temp. Type
-40 ~ 85 °C (-40 ~ 185 °F)
Arctic Temp. Type
-55 ~ 85 °C (-67 ~ 185 °F, only EAC explosion proof)
Ambient Temperature
Of Explosion proof
Refer to “2.7 Certifications”
Linearity
± 0.5 % F.S.
Hysteresis
± 0.5 % F.S.
Sensitivity
± 0.2 % F.S.
Repeatability
± 0.3 % F.S.
Flow Capacity
70 LPM (Sup.=0.14 MPa)
Air Consumption
Below 2 LPM (Sup.=0.14 MPa @ idle)
Output Characteristic
Linear, Quick Open, EQ%, User Set
Vibration
No Resonance up to 100 Hz @ 6 G
Humidity
5 ~ 95 % RH @ 40 °C

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 17
Communication (Option)
HART Communication (HART 7)
Feedback Signal (Option)
4 ~ 20 mA (DC 9 ~ 28 V)
Weight
3.4 kg (7.5 lb)
7.0 kg (15.4 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.
2.6 Specification of Digital Input, Digital Output
1) Digital Input
(Applicable to 6 Communication “5” of Product code)
•Supply voltage : 0 ~ 5 V DC → Logical switching state "0"
10 ~ 28 V DC → Logical switching state "1"
•Current : Max. 4 mA
2) Digital Output
•Supply voltage 5 ~ 28 V DC
•Current < 1 mA → Switching state logical "0"
•Current > 2.2 mA → Switching state logical "1"
2.7 Certifications
※ All certifications below are posted on Rotork YTC Limited homepage(www.ytc.co.kr).
➢KCs (Korea)
Type : Explosion proof construction for internal pressure
Rating : Ex d IIC T5/T6 IP66 (YT-3400)
Ex d IIC T5/T6, Ex tb IIIC T85°C/T100°C (YT-3450)
Certification No. : 10-KB2BO-0077 (YT-3400)
15-KA2BO-0366 (YT-3450)
Ambient temperature : -40 ~ +70°C(T6), -40 ~ +85°C(T5) YT-3400
-40 ~ +70°C(T6), -40 ~ +80°C(T5) YT-3450
➢NEPSI
Type : Explosion proof construction for internal pressure
Rating : Ex d IIC T5/T6 Gb, Ex tD A21 IP66 T85°C/T100°C
Certification No. : GYJ18.1380X
Ambient temperature : -40 ~ +70°C(T6), -40 ~ +80°C(T5)
➢ATEX
Type : Explosion proof construction for internal pressure
Rating : II 2G Ex db IIC T5/T6 Gb, II 2D Ex tb IIIC T85°C/T100°C Db
Certification No. : EPS 11 ATEX 1 308 X
Ambient temperature : -40/-30 ~ +70°C T6(T85°C), -40/-30 ~ +80°C T5(T100°C)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 18
➢IECEx
Type : Explosion proof construction for internal pressure
Rating : Ex db IIC T5/T6 Gb, Ex tb IIIC T85°C/T100°C Db
Certification No. : IECEx EPS 11.0002X
Ambient temperature : -40/-30 ~ +70°C T6(T85°C), -40/-30 ~ +80°C T5(T100°C)
➢CSA
Type : Explosion proof construction for internal pressure
Rating : Ex db IIC T5 or T6
Class I, Zone 1, AEx db IIC T5 or T6
Class II, Division 1, Groups E, F and G; Ex tb IIIC T85°C/T100°C
AEx tb IIIC T85°C/T100°C
Type 4, 4X ; IP66
Certification No. : 2541710
Ambient temperature : -40°C to +70°C(T6), -40°C to +80°C(T5)
➢FM
Type : Explosion proof construction for internal pressure
Rating : Ex db IIC T5/T6, Ex tb IIIC T85°C/T100°C
XP/I/1/BCD/T6 Ta = -40°C to +80°C
DIP/II, III/1/EFG/T6/Ta = -40°C to +80°C; IP66
I/1/AEx db IIC T5 Ta = -40/-20°C to +80°C
I/1/AEx db IIC T6 Ta = -40/-20°C to +70°C
21/AEx tb IIIC T85°C/T100°C
T6 Ta = -40/-20°C to +70°C
T5 Ta = -40/-20°C to +80°C; IP66
Certification No. : FM16US0132X
Ambient temperature : (T6) -40°C to +70°C, (T5) -40°C to +80°C
➢EAC (TRCU)
Type : Explosion proof construction for internal pressure
Rating : 1Ex d IIC T6/T5 Gb X, Ex tb IIIC T85°C/T100°C Db X, IP66
Certification No. : RU C-KR.MЮ62.B.04778
Ambient temperature : -55 ~ +70°C (T6/T85°C), -55 ~ +80°C (T5/T100°C)
➢INMETRO (Brazil)
Rating : Ex db IIC T5/T6 Gb IP66, Ex tb IIC T85°C/T100°C Db IP66
Certification No. : DNV 17.0068 X
Ambient temperature : -40 ~ +70°C (T6), -40 ~ +80°C (T5)
➢CCC (China)
Type : Explosion proof construction for internal pressure
Rating : Ex d IIC T5/T6 Gb, Ex tD A21 IP66 T85°C/T100°C
Certification No. : 2020322307000616
Ambient temperature : -20(-40) ~ +70°C T6(T85°C), -20(-40) ~ +80°C T5(T100°C)

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 19
➢SIL2 (in a redundant structure up to SIL 3)
Intended application : Safety function is defined as to move into fail-safe-position, when
signal to positioner is interrupted.
Certification No. : 968/V 1155.00/20
➢Electromagnetic Compatibility (EMC)
- EMC directive 2014/30/EC from April 2016
- EC Directive for CE conformity marking
2.8 Parts and Assembly
Fig. 2-1: Exploded view
1. Pilot Cover 7. Main Shaft
2. Pilot Unit 8. Main Body
3. Manifold 9. Terminal PCB
4. Torque Motor 10. Terminal Cover
5. Main Cover 11. Feedback Lever
6. Main PCB

Smart Positioner
YT-3400 / 3450 series (New NCS type) Product manual
Ver. 2.06 20
2.9 Product Dimension
2.9.1 YT-3400
Fig. 2-2: YT-3400L (Linear type) Fig. 2-3: YT-3400R (Rotary, Fork lever type)
Fig. 2-4: YT-3400R (Rotary, Namur type)