The digital electro-pneumatic positioner detects the valve position with an external LongLife travel sensor. It has a solid housing with protected operating keys and an easy to read LCD display. The operating times can be set by integrated throttles. Connection and mounting to NAMUR is also possible.

  • Simple and self-explanatory menu
  • Automatic initialisation function
  • Safety function during power or compressed air supply failure
  • Protection class IP 65
  • 3/4-wire type
  • Can be used with linear and quarter turn actuators
  • Operation with single and double acting actuators
  • Separate mounting of positioner and travel sensor
  • Simple handling and commissioning
  • Simple electrical connection by detachable terminals
  • Automatic optimization of valve control during initialisation
  • No air consumption when idle


Type 1435
Field Bus Without
Accessory Accessory
Action Double Acting Single Acting
Explosion-proof Class Without explosion-proof rating
Options1 4-20 mA actual value output 4-20 mA actual value output and heating element 4-20 mA actual value output Electrical connections M12 5-pin 4-20 mA actual value output, electrical connections M12 5-pin and heating element Electrical connections M12 5-pin Electrical connections M12 5-pin and heating element Heating element Without
Version Electro-pneumatic 4-20 mA, 50 l/min Electro-pneumatic 4-20 mA, 90 l/min
Protection Class to EN 60529 IP 65
Length 160 mm
Width 90 mm
Height 84 mm
Weight 1.6 kg
Mounting Position Optional
EC EMC Directive 89/336/EEC
EC Low Voltage Directive 73/23/EEC
Emission of Interference EN 50081-2
Immunity to Interference EN 50082-2
Characteristic Feature
  • During power or compressed air supply failure the valve adopts a safe position (see Safety Function)
  • For control function 2 (NO function) please also order throttle 1435DR_Z
  • Electrical Data

    Power Supply 24 V DC ± 10%
    Power Consumption ≤2.4 W (when idle) ≤7.2 W (during operation)
    Characteristic Accuracy ≤1 %
    Input Signals a) 0-10V; b) 0/4...20 mA
    Input Resistance a) 10 kΩ ; b) 50 Ω
    Position Feedback 0-10 V; 4 to 20 mA (optional)
    Binary Outputs (24 V DC / 0.5 A) 1 error message output 2 alarm outputs
    Permissible Minimum Stroke 3 mm
    Power Supply M16 cable entry
    Input Signal M16 cable entry
    Travel Sensor M12 cable entry
    Recommended Diameter of Connection Cable 5 - 10 mm
    Terminals WAGO 236
    Cross Section Of Wire 0.5...2.5 mm2 AWG 20...12
    Power Supply, Alarm Outputs (Optional) M12 plug, 5-pin
    Input/Output Signals (Optional) M12 plug, 5-pin
    Travel Sensor (Optional) M12 socket, 5-pin

    Operating Conditions

    Ambient Temperature 0 to 60°C
    -20 to 60°C with heating element (≤25 W @ 24 V DC)
    Storage Temperature 0 to 60 ºC
    Control Medium Quality classes to DIN ISO 8573-1
    Dust Content Class 3
    (max. particle size 5 µm)
    (max. particle density 5 mg/m3)
    Pressure Dew Point Class 4
    (max. pressure dew point 3°C)
    Oil Concentration Class 3
    (max. oil concentration 25 mg/m3)
    Air Supply 0 - 6 bar
    Air Output 50, 90 Nl/min, dependent on type (PZ = 6 bar)
    Air Consumption (when Idle) 0 Nl/min

    Main Functions


    • Control function
      • Normally closed
      • Normally open
      • Double acting
    • Automatic initialisation of actuator and positioner
    • Position standardization Min. Position
    • Position standardization Max. Position
    • Close tight function at MIN/MAX POSITION
    • Linearization function for set value-> Position (linear, 1:25, 1:50, programmable)
    • Definition of programmable characteristic curve via 11 points


    Housing Material Aluminium, epoxy coated
    Display Cover Material PMMA
    Key Cover Material PMMA
    Travel Sensor Material Anod. Alu (linear design) NBR (quarter turn design) PAI (quarter turn design) PEEK (linear design)

    Travel Sensor

    Mounting (Linear design) Remote
    Stroke (Linear design) 0-30 mm0-50 mm0-75 mm
    Resistance R (Linear design) 3 / 5 / 5 kΩ
    Connection (Linear design) Pre-fitted cable (max. 20 m)
    Mounting (Quarter turn design) Remote
    Angle of Rotation (Quarter turn design) 0-93 º
    Resistance R (Quarter turn design) 3 kΩ
    Connection (Quarter turn design) Pre-fitted cable (max. 20 m)

    Additional Diagnostics from Version Index 01

    N/A Available in Advanced system mode

    • Diagnostic functions
    • 3 parameter sets can be saved and reloaded
    • 3 user levels (access authorization)
    • Operating hours counter
    • Event list

    • 1 Versions with M12 connections: Order suitable cable sockets / plugs