Remote IO valve terminal

With the 3 in 1 solution, the plants and machine builders have a decentralized and compact Remote IO valve terminal for the first timefor controlling pneumatic actuators for the hazardous area Zone 1/21.

  • The Ethernet connection (Profinet or Modbus TCP / IP)
    is executed in increased safety Ex e.
  • Ex media converters or fieldbus couplers in the safe area are not required and the full Ethernet performance can be used.
  • No IO modules required on the PLC
  • The BEx1 module does not have to be parameterised or configured and behaves transparently in the control I / O
  • Paint shops
  • Pharmaceutical plants
  • Chemical plants
  • Tank farm
  • Bulk materials handling systems
  • Mixing / grinding plants
  • Industrial heating / cooling systems
  • Sewage treatment plants and much more

Customer benefits

Compact – Simple – Fast

  • Central Ethernet connection, central compressed air connection
  • The compact housing enables optimal decentralized installation in the system and guarantees short distances to the sensors and the pneumatic actuators.
  • No compressed air tubing inside the housing.
  • Cost savings and less installation effort

The ATEX certified system in the field housing is designed for installation in Zone 1/21The BEx1 Remote IO valve terminal combines bus nodes, isolating switching amplifiers, intrinsically safe IO channels and the pneumatic valve terminal.

Functions and communication


  • Up to 16 valve terminals 3/2
  • Up to 8 valve terminals 5/2 oder 5/3
  • Or combinations 
    (Valve terminals are installed and pre-wired)
  • 16 Namur inputs for position feedback


Field housing example variant with 8 valvesMaterial: Stainless steel 1.4404 (V4A)Protection class: IP 65Size: 380 x 380 x 161 mmOperating temperature: -5°C* to 40°C(*Pressure dew point: -15 C, alternatively class x:3:x according to ISO 8573-1: 2010)Approval: TPS 07 ATEX 61951 1Type of protection: II 2(1) G/D                              Ex e mb ib [ia Ga] IIC T4 Gb                              Ex tb [ia Da] IIIC T80°C
10 cable glands M20x1.5 (2x Ex e, 8x Ex i)1 BEx1 Remote IO module1 Valve terminal CPV10 Ex i 8x 3/2 valve1 Pneumatic aluminum multipole1 Maintenance unit combination MSB4

Valve terminal

  • The valve terminal CPV10-EX-VI is intrinsically safe
    II 2G Ex ib IIC T4 (-5°C ≤ Ta ≤ 50°C)
    (*Pressure dew point: -15 C, alternatively class x:3:x according to ISO 8573-1: 2010)
  • Pneumatic multipole aluminum for wall passage,
    sealing IP65
  • Valve discs 10 mm wide, nominal flow 400 l/min
  • Operating pressure: 0 .. 10 bar ; Control pressure: 3 .. 8 bar
  • Max. 8 valve disc
  • Up to 16 valve functions on 3/2 valve terminal
    (2 per valve disc)
  • Up to 8 valve functions on 5/2,- 5/3- valve terminal
    mono- and bistable, normally closed, normally open
  • Manual override detent, groping or blocking

Service unit combination MSB4

  • Manual on-off valve (3/2-way), lockable,
    with ventilation and exhaust air silencer
  • Manual pressure regulator with manometer, lockable
  • 40μm filter with manual condensate drain
  • Fittings and compressed air hose Festo on request

Valve Terminal Box Data Sheet

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