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15 

YT-3400/3450 series 

 

4.4.2 

Double acting actuator
Double acting type positioner is set to use OUT1 and OUT2 port.  As input signal increases, 
the supply pressure will be supplied through OUT1 port.     
 
 
 
 
 
 

Fig. 8:  Double acting linear (left) and rotary (right) type actuator 

 

4.5 

Connection – Power

4.5.1 

Safety

  When  installing  in  hazardous  and  explosive  gas  area,  conduit  tube  or  pressure-proof 

packing union must be used.  The compound charging box should be the flameproof 
type and must be sealed completely. 

  Conduit entry connection tap is PF 1/2 or G 1/2.   

  Before connecting terminal, ensure that the power is off completely.   

Do not open the 

cover when the power is still alive. 

  Please use ring-type rug to protect against vibration or any other external impact. 

  Positioner with PTM options must be supplied 10~28V DC separately.  For L/S option, 

separate 12-24V DC must be supplied.   

For both options, it should not exceed 30V 

DC.

   

  Positioner should be grounded. 

  Please  use  twisted  cable  with  conductor  section  are  1.25mm

2

  and  that  is  suitable  for 

600V (complying to the conductor table of NEC Article 310.)  The outer diameter of the 
cable  should  be  between  6.35  ~  10mm.  Use  shield  wire  to  protect  against  electro-
magnetic field and noise.   

  Please  do  not  install  the  cable  near  high  noise  equipments,  such  as  high-capacity 

transformer or motor. 

 
 
 
 
 
 
 
 

 

Summary of Contents for YTC YT-3400 Series

Page 1: ...SMART POSITIONER PRODUCT MANUAL YT 3400 3450 SERIES...

Page 2: ...3 1 Safety 9 3 2 YT 3400 3450L Installation 9 3 2 1 Installation Steps 10 3 3 YT 3400 3450R Installation 12 3 3 1 Bracket Information 12 3 3 2 Installation Steps 13 4 Connections 14 4 1 Safety 14 4 2...

Page 3: ...L 24 6 3 4 1 Zero Point PV_ZERO and End Point PV_END for Valves 24 6 3 4 2 Zero Point TR_ZERO and End Point TR_END for Transmitter 24 6 3 4 3 End Point Ratio for Valve PE_TRIM 25 6 3 4 4 Normal Revers...

Page 4: ...anufacturer will not be responsible for any damages caused by user s negligence Manufacturer will not be responsible for any damages or accidents as a result of any alteration or modification of the p...

Page 5: ...ce and provides unique functions such as Auto Calibration PID Control Alarms and HART Protocol Communications 2 2 Main Features and Functions LCD display enables users to monitor the positioner status...

Page 6: ...number of the positioner B Supply Indicates the supply pressure range C Amb Temp Indicates the allowable ambient temperature D Input Signal Indicates input signal range E Protection of Enclosure Indi...

Page 7: ...40 70 T6 40 85 T5 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 0 01 LPM Sup 0 14 MPa idle Output Characteristic Line...

Page 8: ...Fig 2 YT 3400 3450 series exploded view 1 Pilot Cover 6 Potentiometer 2 Pilot Unit 7 Main Body 3 Main Cover 8 Terminal PCB 4 Main PCB 9 Terminal Cover 5 Feedback Lever 10 Manifold 2 7 Product Dimensi...

Page 9: ...o avoid entire system shut down Ensure there is no remaining pressure in the actuator 3 2 YT 3400 3450L Installation YT 3400 3450L should be installed on linear motion valves such as globe or gate typ...

Page 10: ...in previous step by fastening the bolts Please refer to the backside of the positioner for size of the bolts The standard bolt size is M8 x 1 25P Please contact Young Tech Co Ltd for other bolt sizes...

Page 11: ...ired valve stroke To adjust move the bracket the connection pin or both Fig 3 Pin Insertion when valve stroke is 40mm up and is 90mm bottom 9 After installing the positioner operate the valve from 0 t...

Page 12: ...s x hexagonal headed bolts M8 x 1 25P 4 pcs x M8 plate washer Fig 5 Fork lever type left and NAMUR lever type right 3 3 1 Bracket information Standard bracket included with the positioner contains two...

Page 13: ...uld be 45 degrees in relation to the linear shaft For NAMUR shaft installation the angle does not matter Fig 6 Counter clockwise and clockwise rotation 5 After setting fork lever position assemble loc...

Page 14: ...ge is 1 4 7 kgf cm 2 140 700 kPA Set air filter regulator s pressure level 10 higher than actuator s spring range pressure 4 3 Piping Condition Ensure inside of pipe is clean of obstructions Do not us...

Page 15: ...ing terminal ensure that the power is off completely Do not open the cover when the power is still alive Please use ring type rug to protect against vibration or any other external impact Positioner w...

Page 16: ...th using proper flameproof type packing union 3 Locate terminal of input signal on the left hand bottom side of the positioner Insert terminal bolts into the conduit entry and secure them with and ter...

Page 17: ...ne before operating the positioner 2 Open terminal cover and locate ground terminal plate on the right hand bottom side of the terminal plate The outer cable entry is located at outside of the termina...

Page 18: ...ol room s lamp or make alarm sound 4 If V and COM terminals are connected electric voltage can be used on limit switch It can receive signal from a computer 5 LS ACTION dip switch enable to switch the...

Page 19: ...Mode will be appeared on positioner s LCD screen within 6 seconds RUN indicates that the positioner adjusts the valve stroke according to the receiving signal There are six types of display message in...

Page 20: ...to perform AUTO2 calibration for initial positioner setting 6 3 1 1 AUTO1 Calibration AUTO1 AUTO1 changes zero and end points however KP KI KD will not be adjusted It is recommended to perform AUTO1...

Page 21: ...when the valve actuator control values are not optimized Hunting or oscillation can be prevented by adjusting parameter values Once parameter values have been changed the changed values are being aff...

Page 22: ...likely to have hunting 6 3 3 3 D1 value Kd1 D value indicates the derivative value of the compensation signal based on the percentage of error allowance As the value increase it is more likely to have...

Page 23: ...of internal signal PT1 is for increased input signal and PT2 is for decreased input signal s PT values 6 3 3 7 Period T PERIOD T Period T indicates the positioner s internal control time interval As...

Page 24: ...of the valve and PV_END adjusts the end point of the valve 6 3 4 2 Zero Point TR_ZERO and End Point TR_END for Transmitter TR_ZERO adjusts the zero point of the transmitter 4 20mA feedback and TR_END...

Page 25: ...6 3 4 4 Normal Reverse Feedback Signal TR_NORM REV The feedback signal from the positioner can be viewed as normal or as reverse DOWN ENTER UP DOWN Zero Adjustment Match feedback signal with 4mA ENTE...

Page 26: ...ACT The positioner can be set as Direct Action DA or Reverse Action RA 6 3 5 2 Characteristic Adjustment CHAR The valve characteristic can be set on the field s requirement There are 3 types of charac...

Page 27: ...to 16 points of the curve 6 3 5 4 Tight Shut Open TSHUT OP Tight Shut Open allows the valve to open completely as the input signal reaches around 20mA ENTER DOWN ENTER UP DOWN ESC 3 times ENTER ENTER...

Page 28: ...o set any specific point as zero position For example the zero point can be set at input signal of 7mA 6 3 5 8 Custom End Setting Mode CST ENd Custom End Setting Mode allows the user to set any specif...

Page 29: ...View Mode VIEW Different information can be shown on the positioner s LCD Description YT 2600L Positioner model VERSION Main software version HART V HART protocol version POL AddR HART protocol channe...

Page 30: ...ound at 50 point Lever is at higher position than actual 50 point Re install the positioner Ensure the feedback leer does not touch the lever stopper at 0 and 100 CHK AIR Valve does not operate when p...

Page 31: ...close elapsed time is less than 1 second Actuator size is too small Use variable orifice Use larger actuator G Pv is below 100 The angle of feedback lever is too large Re install the positioner Ensur...

Page 32: ...32 YT 3400 3450 series 8 Main Software Map...

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