Product

WSH limit switching device
WSH 10.2 - Product presentation

Product Description

  • Valve operation via handwheel
  • Signalling of valve end positions
  • Weatherproof and explosion-proof version
  • Mechanical position indication of valve position
  • Option: Position transmitter to signal the valve position as 0/4 – 20 mA current signal to the DCS. The AUMA limit switching devices allow valve operation via handwheel; at the same time, reaching the valve end position is indicated via the end
    position switches. A mechanical position indicator shows the valve position.
    As an option, the limit switching device can be equipped with a remote position transmitter to transmit the valve position as 0/4 – 20 mA current
    signal to the DCS.

Product Spesification

Features and functions
  • Electrical connection
    Standard: AUMA plug/socket connector with screw-type connection
    Options: Terminals or crimp connection
  • Threads for cable entries
    Standard: Metric threads
    Options: Pg-threads, NPT-threads, G-threads
  • Terminal plan TPA90R00A-001-000 (basic version)
  • Valve attachment
    Standard: B1 according to EN ISO 5210
    Options: A, B2, B3, B4 according to EN ISO 5210
    A, B, D, E according to DIN 3210
Electromechanical control unit
  • Limit switching Counter gear mechanism for end positions OPEN and CLOSED
    Turns per stroke: 2 to 500 (standard)
    Standard: Single switches (1 NC and 1 NO) for each end position, not galvanically isolated
    Options: Tandem switches (2 NC and 2 NO) for each end position, switches galvanically isolated
    Triple switches (3 NC and 3 NO) for each end position, switches galvanically isolated
    Intermediate position switch (DUO limit switching), adjustable for any position
  • Position feedback signal, analogue
    (options) : Potentiometer or 0/4 – 20 mA (electronic position transmitter)
  • Mechanical position indicator : Continuous indication, adjustable indicator disc with symbols OPEN and CLOSED
  • Running indication (option) : Blinker transmitter
  • Heater in switch compartment
    Standard: Self-regulating PTC heater, 5 – 20 W, 110 – 250 V AC/DC
    Option: 24 – 48 V AC/DC