-Content (H/W)-

Content 2
Manual description 4
Notes on safety and warranty 4
Product description 5
Features and functions 5
Nameplate description 6
Ordering number 7
Specifications 8
Structure 9
Installation 10
Notes 10
YT-1300L drawing 10
YT-1300R drawing 11
Tools for installation 12
YT-1300L installation 12
Example 12
Installing YT-1300L with bracket 13
YT-1300R installation 17
Example 17
Installing YT-1300R with bracket 18
Piping connection 21
Note 21
Conditions of supply pressure 22
Conditions of pipe 22
YT-1300 Piping connection with actuator 22
Single acting actuator 22
Double acting actuator 23
Power connection 24
Notes 24
Terminal connection of current input signal 25
Terminal connection of feedback signal 26
Terminal connection for limit switch 27
Terminal connection for ground 28
YTC V.1.00 A/M Switch 29

- 1 - - 2 -
 -Content (S/W)-
Manual description
Variable orifice 29
Thanks for purchasing our products.
Calibration 30
Our products are produced and inspected under the strict standards. In order to use the
Note of adjustment 30 products appropriately and efficiently we recommend that users read this manual carefully
Calibration of positioner 31 and fully understand.
Adjustment of POSITIONER-SW 31
Adjustment of P-SPAN various resistor 31 * This manual should be delivered to the end user.
* This manual can be changed without prior notice.
Adjustment of P-ZERO various resistor 31
* This manual, in whole or part, shall not be transcribed or copied without approval by
Adjustment of P parameter various resistor 31
YTC.
Adjustment of D parameter various resistor 32
* Changes of specification, structure and components may not lead to the immediate
Calibration procedure 32 revision of this manual.
Calibration of position transmitter 32
Adjustment of TR-ACTION switch 32 Notes on safety and warranty
Adjustment of TR-SPAN various resistor 33
Adjustment of TR-ZERO various resistor 33 * Before handling YT-1300, it is absolutely imperative that users read and observe the
safety instructions in this manual in order to ensure the protection and safety of
calibration procedure 33
operators.
Calibration of Limit Switch 33
Adjustment of LIMIT-H limit switch 33
* We do not have responsibility for the damage caused by users' repair or conversion of
Adjustment of LIMIT-L limit switch 34 the item. If the repair or conversion is necessary, submit inquiries.
Calibration procedure(LIMIT-H) 34
Calibration procedure(LIMIT-L) 34 * Warranty period is marked on the quotation sheet, which is free of charge in principle.

TROUBLE SHOOTING 35
* For the following cases some cost shall be charged.

- Inappropriate maintenance by users

- Inappropriate transportation and storage
- The product is used beyond specification.
- Inappropriate installation
- Uncontrollable disaster such as fire, earthquake, storm, flood, etc

- 3 - - 4 -
Product Description Nameplate Description

YT-1300 Electro-positioner controls valve stroke accurately according to input signal of Model number
4-20mA being input from controller. In addition, optionally high efficiency, high accuracy, Product model name and additional option codes.
high confident operator built in the performs position transmitter, limit switch at the same Refer the next chapter for detailed ordering number.
time.

Explosion Proof
Features and functions Explosion proof grade applied to the product.
It has Ex ia IIB T6 intrinsically safe type grade.
1. It endures severe vibration.
2. It is operated normally regardless of change of supply pressure during operation.
Protection
3. Calibration method is very simple.
Protection grade applied to the product.
4. It is easily equipped on small actuator because of its small size.
It has IP66 protection grade.
5. Air consumption is so small that operating cost in huge plants is decreased.
6. Because it can be used in low voltage (8.5V), there is no limitation in controller.
Input signal
7. Variable orifice is applied and so in case of small actuator the hunting is controlled to
Current input signal range.
the optimum condition during operation.
DC 4-20mA current is used.
8. Optionally it can be used outputting feedback signal.
9. Optionally it can be used Electro- limit switch.
10. Split range such as 4-20mA, 12-20mA are available. Ambient temperature
11. The pressure of Air filter regulator is sent to Actuator directly with using A/M switch. Ambient temperature range for operating product.
12. PD parameters can adjusted in sensitiveness and specific action. Standard ambient temperature is -20℃ to 70℃.
13. Ex ia IIB T6 protection grade because of structure of intrinsically safe type.
(Be in progress) Supply pressure
14. It has IP 66 Protection grade. Supply pressure range inputting product.
15. Air filter regulator can be attached with the product with only one linear nipple It is set as 1.4-7 kgf/㎠ (0.14-0.7 MPa).
without extra piping.
16. Because of Epoxy polyester powder coating, it can be used for long period of time in
Serial number
corrosive air.
The numbers given each product.
17. Because of simple and modulized inner structure, maintenance is very easy.
By tracking this number various information for the item can be collected.

YT-1300 Label

- 5 - - 6 -
Ordering number Specification

YT-1300 series use the following ordering numbers.

Model YT-1300L YT-1300R

Acting Type Single Double Single Dpuble

YT-1300
Input Signal 4~20 mA DC
Supply Pressure 1.4~7kgf/cm2 ( 0.14~0.7 MPa )
L : Linear Stroke 10 - 150 mm 60 - 90°
1. Motion type
R : Rotary
Impedance Max.500 Ohm/20mA DC
S : Single acting
2. Acting type Air Connection PT 1/4, NPT 1/4
D : Doble acting
Gauge Connection PT 1/8, NPT 1/8
n : Non explosion proof
3. Explosion proof Conduit Entry PF 1/2(Standard), NPT1/2(Option)
I : Ex ia IIB T6 (note 1)
1 : 10 ~ 40 mm Explosion Proof Ex ia IIB T6
4. Feedback lever 2 : 20 ~ 70 mm Protection IP66
(YT-1300L) 3 : 50 ~ 100 mm Ambient Temperature -30~80℃
4 : 100 ~ 150 mm (note 2)
Linearity ±0.5% F.S.
1 : M6 x 40L
Hysteresis 0.5% F.S.
2 : M6 x 63L
Feedback lever Sensitivity ±0.2% F.S
3 : M8 x 40L
(YT-1300R) Repeatability 0.3% F.S.
4 : M8 x 63L
5 : Namur standard Flow Capacity 70 LPM

1 : PT Air Consumption below 2 LPM (sup=1.4K)

5. Connection type
2 : NPT LCD Temp. Condition Storage Temp:-30~85℃ , Operating Temp:-10~70℃
0 : None Vibration Effect 6G
1 : Position transmitter
6. Option Humidity 5-95% RH at 40℃
2 : Limit switch
3 : Position transmitter & Limit switch Communication (Option) below DC 24V
Note 1. No.3 Intrinsically safe type is in progress.
Feedback Signal (Option) 4-20mA ( DC 10 - 30V )
2. No. 4 lever (100 ~ 150mm) is connected one of No. 2 and No. 3 lever.
Material Aluminum Diecasting

Weight 1.5 kg (3.3 lb)

Painting Epoxy Polyestere Powder Coating

Color Black

1. Based on temperature 20℃, absolute pressure 760mmHg and relative humidity 65%
2. Contact us for the product beyond the specification.
3. To change Product color or to use user's own label is available, but they are limited
to the big volumes of quantity. Contact our sales dept.

- 7 - - 8 -
Structure Installation

The structure of YT-1300L is as follows. That of YT-1300R is as same as linear type Note
except feedback lever. When the positioner is installed with the actuator or replaced, ensure the followings.
- All inputs and supply pressure to valve, actuator and other instrument must be shut
down.
- In order entire system not to shut down the control valve must be separated from the
system by bypass valve or other equipment.
- No pressure remains in the actuator.

YT-1300L drawing

Cover

Main PCB

PCB Support

Variable resist
Pilot relay

Main gear
Variable orifice

Main shaft

Body

Feedback spring

Flange nut

Feedback lever

YT-1300 structure
YT-1300L drawing

- 9 - - 10 -
YT-1300R drawing
Tools for installation

Tools and bolts used for assembly are,

1. Hexagonal wrenches
2. (+) screw driver
3. (-) screw driver
4. Spanners for hexagon head bolts

YT-1300L installation

YT-1300L is used for linear motion valve such as globe valve or gate valve using spring
return type diaphragm actuator or piston actuator. YT-1300L consists of the following
components. Be sure that all the components are prepared.

1. YT-1300 main body

2. Feedback lever and lever spring
3. Flange nut (attached on the bottom of main shaft of YT-2300L body)
4. 4pcs of Hexagon head bolt M8x1.25P
5. 4pcs of M8 plate washer

YT-1300 installation example

YT-1300R drawing

* The brackets for attaching on the actuators are made by using these drawings and
they are also used for checking piping, etc.
YT-1300L installation example

- 11 - - 12 -
Installing YT-1300L with bracket 4. Install bar connected with YT-1300L feedback lever on the actuator clamp. The slot
length between YT-1300L feedback lever is 6.5mm, so the diameter of connection bar
should be less than 6.3mm.
1. First of all, it is necessary to make proper bracket to attach on actuator yoke.
The most important things in making bracket are as follows.

1) YT-1300L feedback lever should be level at 50% of valve stroke. (Refer to no. 7 in
this chapter.)
2) Feedback lever connection bar of actuator clamp should be connected at the position
that valve stroke and the numbers carved on feedback lever is fitted. (Refer to no. 8 in
this chapter.)

If the bracket meets the above conditions, YT-1300L is installed very easily.

2. Assemble YT-1300L and bracket with bolts. Use standard bolts in bolt holes on the
backside of YT-1300L. The standard of bolt screw is M8x1.25P and other bolt standards
are available as option. For details, contact our sales dept.

Installation of actuator clamp and connection bar

5. Connect air filter regulator with the actuator temporarily. Set supply pressure of air
filter regulator in order that actuator clamp is positioned at 50% of valve stroke.

Installing YT-2300L with bracket

Connection of supply pressure pipe between actuator and air filter regulator
6. Insert connection bar attached on actuator clamp into the slot of YT-1300L feedback
3. After assembling YT-1300L and bracket with bolts, attach it with using bolt holes of
lever. Ensure that inserting should be the following picture in order to reduce hysteresis.
actuator yoke. But do not attach completely. There must be some space.

- 13 - - 14 -
 feedback lever applicable to valve stroke as the following picture. To set the connection
bar and the number, move the bracket attached on YT-1300L or connection bar from
side to side.

Stroke 30mm

Stroke 70mm

Installation position of connection bar for valve stroke

The connection bar inserted correctly between feedback lever and lever spring
Note
7. Check if YT-1300L feedback lever is level at 50% of valve stroke. If not, make it be After installation, operate valve from 0 stroke to 100% stroke with using air filter regulator
level with moving bracket or feedback link bar. If YT-1300 is installed not being level at on the actuator. When the stroke is both 0% and 100%, feedback lever should not be
50% of valve stroke, product linearity becomes worse. reached to the lever stopper on the backside of YT-1300. If feedback lever reaches to
the lever stopper, move attachment position of YT-1300L to the direction becoming more
distant from yoke center.

Feedback lever being leveled correctly

Check whether or not lever stopper and feedback lever is contacted

9. If YT-1300L is installed accurately as above procedures, lock the bolts and nuts of
bracket and feedback lever connection bar completely.
8. Check valve stroke. The numbers indicating stroke are carved on the YT-2300L
feedback lever. Set connection bar attached on actuator clamp on the number on

- 15 - - 16 -
YT-1300R installation
Installing YT-1300R with bracket
YT-1300R is used for rotary motion valve such as ball valve or butterfly valve using rack YT-1300R is supplied with standard bracket. The bracket is consists of 2 part and can
and pinion, scotch yoke or complex type actuator whose stem is rotated 90 degrees. be used with Fork lever and Namur shaft. The bracket is assembled in the factory as
YT-1300R consists of the following components. based on 20mm of actuator stem height. But if actuator stem height is higher than that
like 30mm, 50mm, reassemble the bracket adjusting to the height. Referring to the
1. YT-1300R main body following table, check the hole positions.
2. Fork lever and lever spring to attach on actuator
3. 1 set of bracket
4. 4pcs of Hexagon head bolt M8x1.25P YT-1300R Upper bracket A
5. 4pcs of M8 plate washer

YT-1300R installation example

Bottom bracket B Actuator

YT-1300R installation example of fork lever Bracket assembly method by actuator stem height H

Actuator stem Markings of bolt holes

height (H) A-L B-L A-R B-R
20mm H : 20 H : 20, 30 H : 20 H : 20, 30
30mm H : 30 H : 20, 30 H : 30 H : 20, 30
50mm H : 50 H : 50 H : 50 H : 50

Ex) In case that H is 30mm, A-L should be locked in H:30 hole and B-L in H:20,30, A-R
in H:30, B-R in H:20,30 with bolts.

Table: Bracket assembly method by actuator stem height H

YT-1300R installation example of Namur shaft

- 17 - - 18 -
1. Usual types of actuator stem height (H) are 20, 30 and 50mm. After checking H,
assemble brackets as explained on the previous page. The bracket is set as 20mm type
in the factory.
Actuator stem

Actuator In case of counter clockwise

Actuator stem height (H=20mm)

2. Attach bracket to the actuator using hexagon head bolts or wrench bolts. Diameter of
bracket bolt holes is 6mm. Use spring washers or any other equipment so as the bolts
not to be loosened by vibration or impact. The direction of bracket is different by
operating conditions, but normal direction is as following picture. That is, when the piping
of actuator and YT-1300R is direction A, bracket hole and indicator attached on the
bottom of YT-1300R main shaft should be same direction as being half circle. In case of clockwise

Installation position of fork lever

5. If the fork lever position is set, lock check nuts assembled on the bottom of fork lever
with turning clockwise. Set the upper height of fork lever as 6-11mm lower than bracket
upper height.
Bracket 6-11mm

Fork lever
Direction A

Attachment direction of bracket and actuator

Actuator
3. Set rotation position of actuator stem as initial zero point which is stroke 0%. In case
of spring return type single actuator, since the actuator stem is always rotated at zero
point without supply pressure, it is easy to check zero point. If the actuator is double Height of bracket, fork and fork lever
acting, check that whether it is clockwise or counter clockwise or the rotation direction of
actuator stem with using supply pressure. 6. Attach YT-1300R to the bracket. Fix the clamping pin on the main shaft center of
YT-1300R into the hole of fork lever and insert connection bar attached on the main
4. Set actuator stem as initial zero point and install fork lever as the following picture. shaft lever into fork lever slot to be locked fork lever spring. This is to fit the main shaft
Ensure the position of initial zero point when actuator stem is clockwise or counter of YT-1300R and the center of actuator stem. If they are not fitted, product durability is
clockwise. Installation angle of fork lever should be about 45 degree based on the linear getting worse due to too much force on the main shaft of YT-1300.
shaft. But the angle is not related to Namur shaft.

- 19 - - 20 -
 2. We recommend to attach filter or air filter regulator in front of supply port of YT-1300.

Conditions of supply pressure

1. Dry air whose dew point is at least 10℃ lower than that of ambient temperature.
2. Be free from solid particles as a result of being passed through 5㎛ or finer filter.
3. Not contain oil or lubricating oil.
4. Comply with ANSI/ISA-57.3 1975(R1981) or ISA S7.3-1975(R1981).
5. Not used beyond the range of 1.4 - 7 kgf/㎠ (140 - 700 kPA).
Connection Clamping pin 6. Set supply pressure of air filter regulator as 10% higher than operating pressure of
shaft actuator of spring range pressure.
Fork lever

Conditions of pipe
1. Remove foreign objects inside of pipe.
2. Do not use squeezed or broken pipe.
3. To maintain flow rate of YT-1300, use the pipe whose inner diameter is more than
6mm (outer diameter 10mm).
Fitting the pin on the YT-1300R main shaft into fork lever hole
4. Do not connect the pipe too long. It affects flow rate due to the friction inside the
pipe.
7. Fix YT-1300R base and the bracket with hexagon head bolts and plate washer. It is
better to lock the bracket and YT-1300R after checking the position of YT-1300R inserting
four bolts.
Piping connection with actuator

Single acting actuator

YT-1300 series single acting type is set to use OUT1 port. Therefore, in case of using
single acting type of spring return actuator, OUT1 port should be connected with supply
pressure port of actuator.

Assembly status of YT-1300R

Piping connection

Note
1. To prevent moisture, oil and dust from being led into the product, give careful
consideration to the choice of supply pressure compressor and its system.
Piping connection example of YT-1300L with single acting actuator

- 21 - - 22 -
 Power connection

Note
1. Before connecting terminal, power must be shut off.
2. Use ring type terminal against oscillation, impact, etc.
3. YT-1300 series (except PTM and L/S included type) use DC 4-20mA as power.
4. If structure of explosion need to area according to explosion rule of their area have to
power connection.
5. Safety Barrier set controller or DSC system of safety area for keep the intrinsically
safe type. Here is the Safety Barrier specification.
6. In case of PTM type, additional power should be supplied to PTM separately. Supply
Piping connection example of YT-1300R with single acting actuator
voltage is 9-27V and must not be exceeded 30V.
7. In case of Limit Switch type, additional power should be supplied L/S separately.
Double acting actuator Supply voltage is not exceeded DC 24V.
8. In order to protect the product the ground terminals should be grounded.
In case of YT-1300 series double acting type, when input current signal, supply pressure 9. Use twisted cable which conductor sectional area is 1.25㎟ and is suitable for 600V
is out from OUT1 port. as on conductor table of NEC Article 310. Outer diameter of cable should be 6.35-10mm.
Use shield wire against electromagnetic wave and noise.
10. Do not install the cable near the equipment such as high-capacity transformer or
motor generating noise.

The following is terminal part of YT-1300 series.

Piping connection example of YT-1300L with double acting actuator

Terminal plate of YT-1300

Piping connection example of YT-1300R with double acting actuator

- 23 - - 24 -
 Terminal connection of feedback signal
Terminal connection of current input signal
1. Open cover by loosening 4pcs of M4 bolts of product cover.
1. Open cover by loosening 4pcs of M4 bolts of product cover. 2. Loosen terminal locking bolts of feedback signal for position transmitter on terminal
2. Loosen terminal locking bolts of terminal plate receiving current input signal. plate.

Terminal connection of transmitter

Terminal connection of current input signal

3. Insert a cable through cable connector in YT-1300.

4. Use ring type as cable terminal in order not to come out.
5. Insert terminal bolts in terminal holes of cable and lock them with + terminal and -
3. Insert a cable through cable connector in YT-1300. terminal each on terminal plate. Tighten terminal bolts with 1.5Nm (15kfgcm) torque.
4. Use ring type as cable terminal in order not to come out. 6. Be sure not to change the polarity of terminal.
5. Insert terminal bolts in terminal holes of cable and lock them with + terminal and -
terminal each on terminal plate. Tighten terminal bolts with 1.5Nm (15kfgcm) torque.
6. Be sure not to change the polarity of terminal.

- 25 - - 26 -
Terminal connection of limit switch Inner terminal connection for ground

1. Open cover by loosening 4pcs of M4 bolts of product cover. 1. The ground is necessary for the safety of YT-1300 series and system.
2. Loosen terminal locking bolts of feedback signal for position transmitter on terminal 2. There are inside terminal in the center of terminal plate and outside terminal beside
plate. outer cable entry. Using any ground terminal is available and resistance must be less
than 1000hm.

Ground terminal connection

Terminal connection of limit switch

3. Insert a cable through cable connector in YT-1300.

4. Use ring type as cable terminal in order not to come out. 3. In case of using inside ground, open cover by loosening 4pcs of M4 bolts of product
5. Insert terminal bolts in terminal holes of cable and lock them with + terminal and - cover.
terminal each on terminal plate. Tighten terminal bolts with 1.5Nm (15kfgcm) torque. 4. In order to maintain the ground safely, use ring type as ground cable terminal to
6. Above the drawing, 3pieces terminal of left are located 100% open valve, 3pieces of prevent it coming out.
terminal of right are located 0% open valve.
7. Be sure not to change the polarity of terminal.

- 27 - - 28 -
A/M switch (Auto/Manual switch) Calibration

There is A/M switch on the bottom of YT-1300. If this switch is set as auto, supply Warning : Since this makes valve or actuator move, before auto calibration valve must be
pressure is transmitted to actuator by the operation of YT-1300 and if it is set as separated from entire system.
manual, supply pressure of air filter regulator is transmitted to actuator regardless of
YT-1300. Explanation of Adjustment

* When A/M switch is set as manual, ensure that too much pressure must not be
Board of YT-1300 Series have power relate terminal plate 2set, variable resistor 3set and
transmitted to the actuator.
PD adjustment 1set.
Terminal plate is relate terminal block of positioner, position transmitter and limit switch,
1. Check if the supply pressure of air filter regulator is too high.
also adjustment variable resister has positioner, transmitter, limit switch each variable
2. Turn the switch clockwise and supply pressure of air filter regulator is transmitted to
resister. Location and explain about the parts are as follows :
actuator.(take 1~2 round)
3. If turn the switch counter-clockwise, YT-1300 is operated normally. (take 1~2 round)
choose actuator type

choose transmitter type

Auto Manual
Adjustment of A/M switch

Variable orifice

The actuator volume is too small, hunting can be occurred. In this case, adjust variable Location of terminal block and variable resister above board
orifice with using (-) driver, then hunting is prevented by reducing flow rate of supply
pressure transmitting to actuator.
(1) -1 : input signal to positioner
(1) -2 : positioner, direct/reverse action convert switch
(1) -3 : positioner, adjustment zero/span variable resister
(1) -4 : positioner, restrain of P, adjustment of D restrain variable resister
(2) -1 : position transmitter input/output signal (2 wire) terminal
Maximum open (2) -2 : position transmitter direct/reverse action convert switch
(2) -3 : position transmitter adjustment of zero/span variable resister
(3) -1 : limit switch input/output signal terminal plate
(3) -2 : limit switch perception location adjustment of switch
(4) -1 : inner grounding terminal
Minimum open
Adjustment of variable orifice

- 29 - - 30 -
Calibration of Positioner VARIABLE RESIST OF D PARAMETER

Calibration of positioner used to adjust sign switch of <POSITIONER-SW> and sign Variable resistor of D parameter adjust to restrain value of D. What is the restrain of D,
variable resister 2 piece of <P-SPAN>, <P-ZERO>, also sign variable resister 2 piece of according to variation ratio of error %, add to fines constant value of original compensate
<p>, <D>. Each location of adjustment reference to 'explain of adjustment'. signal through variation of compensation value. If restrain value of D is getting bigger,
About each method of adjustment, explain to detail as follows. easy to occur hunting, if getting smaller, it is find to locate own course which able to
worse the same property. If turn to clockwise, restrain value of D is increasing, if turn to
POSITIONER-SW counter clockwise, restrain value of D is decreasing.
Switch

According to direction action or reverse action of Calibration procedure

operation direction of actuator, operation
direction of positioner agreement. In this switch is (1) It will be right to check installing method and power connection for positioner, if
agreed tp operation direction of positioner. According to linear and rotary type, it have to something is wrong, it have to reinstalling right way again.
opposite setting direction. If operator method of actuator is RA to linear type, it should be (2) Input 4mA electric current signal turn to P-ZERO variable resistor which is setting to
pushing the right to switch, if DA, it should be pushing the left to switch. valve stroke 0%.(in case of reverse). In case of direction, it is setting 100%.
(3) Input 20mA electric current signal turn to P-SPAN variable resistor which is setting to
VARIABLE RESIST OF P-SPAN valve stroke 100%(in case of reverse). In case of direction, It is setting 0%.
(4) If it adjust to span, it will be changed Zero point, so it is processing to repeat again
Variable resistor of P-SPAN adjust span of positioner. above (2),(3).
If turn to clockwise, span value is increasing, (5) After zero and span adjust, it will be setting to adjust P, D parameter various resistor
If turn to counter clockwise, span value is decreasing. to the same property of valve stem.

ADJUSTMENT OF P-ZERO VARIABLE RESISTOR Calibration of Position transmitter

P-ZERO variable resistor adjust zero point of positioner. If turn to clockwise, zero point is
Calibration of position transmitter method is better to easy than method of positioner.
up, If turn to counter clockwise, zero point is down.
Calibration of position transmitter adjust variable resistor 2pieces of <TR-SPAN>,
<TR-ZERO> sign and switch of <TR-ACTION> sign.
VARIABLE RESIST OF P PARAMETER

Variable resistor of P parameter adjust to restrain value of P. Adjustment of TR-ACTION SWITCH

What is the restrain of P, according to error %, it is
proportional constant value of compensate signal.
It should be agree to increase and decrease direction of signal between positioner and
Although restrain value of P is getting bigger, according to
position transmitter.
input signal, quickly find to locate, easy to occur hunting,
<TR-ACTION> switch agree to increase and decrease
otherwise if restrain value of P is getting smaller,
direction of signal for two instruments. If it is agree
fall down the precision.
between input signal of positioner and output signal of
position transmitter, when input signal of positioner has
4mA, if output signal of position transmitter also occur to
4mA, it have to set the pushing switch right to direction of <DIR>. On the other hands, if

- 31 - - 32 -
it occur to opposite between input signal of positioner and output signal of position Adjustment of LIMIT-L LIMIT SWITCH
transmitter, when input signal of positioner has 4mA, if output signal position transmitter
has 20mA, it have to set the pushing switch left to direction of <REV>.
Variable resistor of LIMIT-L limit switch occur to signal of 4mA locate. In case of actuator
of direction action, it occur to signal of stroke 100% point, on the other hand, in case of
actuator of reverse action,
Adjustment of TR-SPAN Variable resistor
Calibration procedure <LIMIT-H>
Variable resistor of indicate to TR-SPAN adjust to
span of position transmitter. If turn to clockwise,
(1) It finished calibration of positioner.
span value is getting bigger, if turn to counter clockwise,
(2) It relate to power V+(H) terminal and COM(H) terminal, or V-(H) terminal and COM(H)
span value is getting smaller.
terminal.
When signal of Normal Open needed, relate to V+(H) terminal and COM(H) terminal,
when relate to Normal Close, relate to V-(H) terminal and COM(H) terminal.
Adjustment of TR-ZERO Variable resistor (3) It input 20mA an electric current to positioner.
(4) It can be checked to turn on the(Normal Open) red LED light above limit switch
plate, if it doesn't turn on the light, variable resistor of LIMIT-H adjust until turn on
Variable resistor of indicate to TR-ZERO adjust to zero of positioner. If turn to clockwise,
the LED light. If it turn to clockwise, fixing point is going up, if it turn to counter
zero point is up, if turn to counter clockwise, zero point is down.
clockwise, fixing point is going down.

Calibration procedure
Calibration procedure <LIMIT-L>

Calibration of position transmitter is same thing in positioner.

(1) It finished calibration of positioner.
Merely, Be careful to <TR-ACTION> switch direction.
(2) It relate to power V+(L) terminal and COM(L) terminal, or V-(L) terminal and COM(L)
terminal.
Calibration of Limit Switch When signal of Normal Open needed, relate to V+(L) terminal and COM(L) terminal,
when relate to Normal Close, relate to V-(L) terminal and COM(L) terminal.
2pieces variable resistor adjust to use calibration <LIMIT-H>, <LIMIT-L> sign of limit (3) It input 20mA an electric current to positioner.
switch. Limit switch is transistor formula which can use exclusively DC 24V, so it can not (4) It can be checked to turn on the(Normal Open) red LED light above limit switch
be used AC voltage and exceed DC voltage. plate, if it doesn't turn on the light, variable resistor of LIMIT-L adjust until turn on
the LED light. If it turn to clockwise, fixing point is going up, if it turn to counter
ADJUSTMENT OF LIMIT-H LIMIT SWITCH clockwise, fixing point is going down.

Variable resistor of LIMIT-H limit switch occur to signal

of 20mA locate. In case of actuator of direction action,
it occur to signal of stroke 0% point, on the other hand,
in case of actuator of reverse action, it occur to signal
of stroke 100% point. When close, it can be checked to
operate to turn on the red LED light above limit switch plate.

- 33 - - 34 -
 TROUBLE SHOOTING

Contents Cause Measures

supply pressure is very low adjust to supply pressure

terminal fixing bolt is loose tight to terminal fixing bolt

Positioner is out of work,
wrong relate to (+), (-) right relate to (+), (-)
when input to electric current
trouble to PCB board change to PCB board

Piezo Unit is choked up change to Piezo Unit

pressure of OUT1 piping
rising until pneumatic
open to turn to counter clock
regulator pressure, it is out of closed the A/M Switch
wise A/M Switch
work to electric current signal

out put pressure occur only

trouble to Piezo Unit change to Piezo Unit
by A/M Switch

volume of actuator is small adjust to various orifice

D restraint value is much big
occur to hunting adjust to D restraint value
or small
P restraint value is much big reduce to P restraint value

OUT1 and OUT2 piping is right relate to OUT1 and

actuator could not adjust to changed OUT2 piping
middle only ON/OFF work
RA/DA Action fixing to change fixing to adjust RA/DA Action

wrong relate to feedback lever right relate to feedback lever

linearity is not good wrong adjust to zero, span again to adjust zero, span

wrong installing positioner right reinstalling positioner Yong Tech Co.,Ltd.

loose fixing patch of feedback adjust to elasticity of fixing
lever patch ADD ：662-8,Pungmu-Dong, Kimpo-City,Kyeonggi-Do,Korea
much hysteresis TEL : 0082-31-986-8545
wrong setting up positioner right resetting up positioner
FAX : 0082-31-986-2683
P restraint value much samll raise to P restraint value
E-mail : ytc@ytc.co.kr
temporarily, it is not without ground or inferiority right relate to ground Homepage ：http://www.ytc.co.kr ，http://www.positioner.biz
response to input signal,
operate to turn on the power trouble to PCB board change to PCB board
again
This information contained in this catalogue is subject to change without prior notice
Please contact our web-site for the latest information.

- 35 - - 36 -