Ytc YT-2500 SERIES User manual

SMART POSITIONER PRODUCT MANUAL
YT-2500 / 2550 / 2501 SERIES
VERSION 1.04

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 2
Contents
1. Introduction ...................................................................................................................................5
1.1 General Information for the users ...........................................................................................5
1.2 Manufacturer Warranty ...........................................................................................................5
1.3 Explosion Proof Warning (Only for Intrinsic safety type positioners)......................................6
2. Product Description......................................................................................................................7
2.1 General....................................................................................................................................7
2.2 Main Features and Functions..................................................................................................7
2.3 Label Description ....................................................................................................................8
2.4 Product Number......................................................................................................................9
2.4.1 YT-2500 / 2550 series follows suffix symbols as follows................................................9
2.4.2 YT-2501 series follows suffix symbols as follows. ........................................................10
2.5 Product Specification ............................................................................................................11
2.5.1 YT-2500 / 2550 Specification........................................................................................11
2.5.2 YT-2501 Specification...................................................................................................12
2.6 Certifications..........................................................................................................................13
2.7 Parts and Assembly ..............................................................................................................14
2.8 Product Dimension................................................................................................................16
2.8.1 YT-2500.........................................................................................................................16
2.8.2 YT-2550.........................................................................................................................17
2.8.3 YT-2501.........................................................................................................................17
3. Installation ...................................................................................................................................18
3.1 Safety....................................................................................................................................18
3.2 Tools for installation ..............................................................................................................18
3.3 Linear positioner Installation .................................................................................................18
3.3.1 Safety ............................................................................................................................19
3.3.2 Linear positioner Installation Steps...............................................................................19
3.4 Rotary positioner Installation.................................................................................................23
3.4.1 YT-2500 / 2550R Components .....................................................................................23
3.4.2 YT-2501R remote sensor Components ........................................................................23
3.4.3 Rotary Bracket information (Only YT-2500 / 2550).......................................................24
3.4.4 Rotary positioner Installation Steps...............................................................................25
4. Connection - Air ..........................................................................................................................27
4.1 Safety....................................................................................................................................27
4.2 Supply Pressure Condition....................................................................................................27
4.3 Piping Condition....................................................................................................................27
4.4 Connection –Piping with actuator ........................................................................................28
4.4.1 Single acting actuator....................................................................................................28
4.4.2 Double acting actuator ..................................................................................................29

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 3
5. Connection –Power....................................................................................................................30
5.1 Safety....................................................................................................................................30
5.2 Connection............................................................................................................................30
5.3 Ground ..................................................................................................................................31
6. Adjustments.................................................................................................................................32
6.1 Limit Switch Adjustment........................................................................................................32
6.2 Variable Orifice Adjustment...................................................................................................33
7. Optional Sub-PCB Installment...................................................................................................34
7.1 Installation steps ...................................................................................................................34
8. Auto Calibration and PCB Operation........................................................................................35
8.1 Warning.................................................................................................................................35
8.2 Button Description.................................................................................................................35
8.3 Run Mode (RUN) ..................................................................................................................36
8.4 Auto Calibration mode (AUTO CAL).....................................................................................36
8.4.1 AUTO1 Calibration (AUTO1).........................................................................................37
8.4.2 AUTO2 Calibration (AUTO2).........................................................................................37
8.4.3 AUTO3 Calibration (AUTO3).........................................................................................37
8.5 Manual Mode (MANUAL)......................................................................................................38
8.6 Parameter Mode (PARAM)...................................................................................................38
8.6.1 Dead-Zone (dEAdZONE)..............................................................................................38
8.6.2 P1 Value (KP1)..............................................................................................................39
8.6.3 D1 Value (Kd1)..............................................................................................................39
8.6.4 P2 (KP2) and D2 (Kd2) values......................................................................................39
8.6.5 P_ (KP_) and D_ (Kd_) Values .....................................................................................39
8.6.6 PT1 (PT1) and PT2 (PT2) Values.................................................................................40
8.6.7 Period T (PERIOD T) ....................................................................................................40
8.6.8 Auto DZ (AUTO dZ).......................................................................................................40
8.7 Hand Calibration Mode (HAND CAL)....................................................................................41
8.7.1 Zero-Point (PV_ZERO) and End-Point (PV_END) for Valves ......................................41
8.7.2 Zero-Point (TR_ZERO) and End-Point (TR_END) for Transmitter...............................42
8.7.3 End-Point Ratio for Valve (PE TRIM)............................................................................43
8.7.4 Normal / Reverse Feedback Signal (TR NORM / REVS).............................................43
8.7.5 Normal / Reverse HART Signal (HT NORM / REVS) ...................................................43
8.8 Valve Mode (VALVE) ............................................................................................................44
8.8.1 Acting Adjustment (ACT RA / dA).................................................................................44
8.8.2 Valve flow Characteristic Adjustment (CHAR)..............................................................45
8.8.3 User defining flow Characteristics (USER SET) ...........................................................45
8.8.4 Tight Shut Open (TSHUT OP) ......................................................................................46
8.8.5 Tight Shut Close (TSHUT CL).......................................................................................46
8.8.6 Split Range Mode (SPLIT) ............................................................................................47

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 4
8.9 View Mode (VIEW)................................................................................................................48
9. Error and Warning Code.............................................................................................................50
9.1 Error code..............................................................................................................................50
9.2 Warning code........................................................................................................................51
10. Main Software Map...................................................................................................................52

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 5
1. Introduction
1.1 General Information for the users
Thank you for purchasing Young Tech Co., Ltd 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 commission the product.
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. 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 Young Tech Co., Ltd, Gimpo-si, South Korea.
In case of any other problems that are not stated in this manual, please make immediate
contact to Young Tech co., Ltd.
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 Young Tech co., Ltd will not be compensated. If
any alterations or modifications are necessary, please contact Young Tech Co., Ltd
directly.
Manufacturer warrants the product from the date of original purchase of the product for
eighteen (18) months, except as otherwise stated.
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 Young Tech
Co., Ltd office or main office in South Korea.

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 6
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.
Positioner 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.
Cable rug with surface area of more than 0.195mm2with M4 spring washer should be
used to connect the power.
For external ground terminal, cable rug with surface area of more than 5.5mm2should
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.

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 7
2. Product Description
2.1 General
YT-2500 / 2550 / 2501 series 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 or Supply air pressure (below 0.1 MPa) 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.
YT-2501 is stronger on high temperature and vibration environment because it is
separated into feedback sensor and positioner.
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 or Foundation Fieldbus
communication. (option)
Valve system becomes more stable by outputting analog feedback signal.
Different valve characteristics can be adjusted –Linear, Quick Open, Equal Percentage,
and Custom which user can make 16 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 sensor module of YT-2501 series is -40 ~ 120℃.
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. (except YT-2550)
Maintenance of the positioner is easy because of modularized inner structure.

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 8
2.3 Label Description
Fig. 2-1: YT-2500 / 2501 None explosion type Fig. 2-2: YT-2550 None explosion type
Fig. 2-3: YT-2500 / 2501 Intrinsic safety type Fig. 2-4: YT-2550 Intrinsic safety type
Fig. 2-5: YT-2500 / 2501 Foundation Fieldbus type Fig. 2-6: YT-2550 Foundation Fieldbus type
Model Number: Indicates the model number and any options of the positioner.
Explosion Proof: Indicates certified explosion proof grade.
Input Signal: Indicates input signal range.
Operating Temp.: Indicates the allowable operating temperature.
Ambient Temp.: Indicates the allowable ambient temperature for explosion proof
Supply Pressure: Indicates the supply pressure range.
Ui, Ii, Pi, Ci, Li: Indicates the allowable electrical data in the certificate.
You can see the details in the certificate.
Serial Number: Indicates unique serial number.
YEAR : Indicates manufactured year.

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 9
2.4 Product Number
2.4.1 YT-2500 / 2550 series follows suffix symbols as follows.
YT-2500 / 2550 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
n :
i :
Non-Explosion
Ex ia IIC T5/T6
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 Standard
5 Conduit –
Air Connection Type
1 :
2 :
3 :
4 :
5 :
G1/2 - PT 1/4
G1/2 - NPT 1/4 (YT-2550 is available for No. 2 ONLY)
G1/2 - G 1/4
M20 - NPT 1/4
NPT1/2 - NPT 1/4
6 Communication
0 :
2 :
3 :
None
+ HART Communication
+ Foundation Fieldbus 1)
7 Option
0 :
1 :
2 :
3 :
4 :
5 :
None
+ Position Transmitter
+ Limit Switch(Mechanical Type)
+ Limit Switch(Proximity Type)
+ Position Transmitter and Limit Switch (Mechanical Type)
+ Position Transmitter and Limit Switch (Proximity Type)
8 Fail Option
F :
S :
Fail Freeze
Fail Safe
1) Foundation Fieldbus(FF) is available for only non-explosion model and cannot have any
other 7 options.

Smart Positioner
YT-2500 / 2550 / 2501 Series Product manual
Ver. 1.04 10
2.4.2 YT-2501 series follows suffix symbols as follows.
YT-2501 1 2 3 4 5 6 7 8 9
1 Motion Type
L :
R :
Linear
Rotary
2 Acting type
S :
D :
Single
Double
3 Explosion Proof
n :
i :
Non-Explosion
Ex ia IIC T5/T6
4 Lever Type
Linear
1 :
2 :
3 :
4 :
10 ~ 40 mm
20 ~ 70 mm
50 ~ 100 mm
100 ~ 150 mm
Rotary
5 :
Namur Standard
5 Conduit –
Air Connection Type
1 :
2 :
3 :
4 :
5 :
G1/2 - PT 1/4
G1/2 - NPT 1/4
G1/2 - G 1/4
M20 - NPT 1/4
NPT1/2 - NPT 1/4
6 Communication
0 :
2 :
3 :
None
+ HART Communication
+ Foundation Fieldbus 1)
7 Option
0 :
1 :
None
+ Position Transmitter
8 Fail Option
F :
S :
Fail Freeze
Fail Safe
9 Cable Length 2)
1 :
2 :
3 :
4 :
5m
10m
15m
20m
1) Foundation Fieldbus(FF) is available for only non-explosion model and cannot have position
transmitter option of 7 .
2) Maximum cable length is 20m.