Rotork YT-3400 Smart and Control Valve

Last Updated
07 Dec 2021
Country Origin
Korea South
Minimum Order
1 Unit

Specification of Rotork YT-3400 Smart and Control Valve

YT-3400 Smart Valve Positioner accurately controls valve stroke, according to input signal of 4~20mA being delivered from controller.

  • Auto calibration
  • PID control
  • HART comunication
  • Auto/Manual switch
  • Feedback signal
  • 4 buttons for local control
  • LCD display
  • Limit switch
Product Description

The smart 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, PID Control, and HART Protocol Communications.

Main Features and Functions

➢ The LCD can be checked and the buttons can be operated 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 work 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
➢ 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
➢ Various information about positioner can be processed by HART communication(Option)
➢ 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 18 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 4~12mA or 12~20mA can be set.
➢ Operating temperature for positioners is -30 ~ 85℃ or -40 ~ 85℃ (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.
➢ 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)
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