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For more information, please contact:
ASCO Numatics
32, avenue Albert 1er
92506 Rueil Malmaison Cedex
France
Tel: + 33 (0)1 47 14 32 00
Fax: + 33 (0)1 47 08 53 85

Proportional valves

with PositionerD controller

Applications

The Series 290 pressure operated valves, well known for their reliability, can be equipped with a proportional position controller. This precise, quick-acting and robust unit is suitable for use in industrial environments and outside applications.

Filling / Dosing / Mixing / Inerting

High flow starting and low flow ending
to obtain a fast filling with optimal accuracy

Burner

Light length control
(% of gas mixing can be proportional to air volume input)

Food process

Pasteurisation / Stérilisation: steam
Cold tank: cold water & glycol
Process CIP/SIP : steam, Hydrogen peroxide ...

Thermal exchanger

Steam flow adjusted until the desired temperature at the exchanger outlet is reached.

Operating principle

Open loop process control
Proportional valve: simple loop

Closed loop process control
Proportional valve: double loop

Closed loop process control
Proportional valve: simple loop

Closed loop process control
Proportional valve: double loop
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Key features

Process reliability

  • Exceptional life time > 3 Millions cycles (with water)
  • Safety valve function: designed to keep the position or to automatically close up in case of power supply failure
  • Robust and water proof controller (IP66) : resistant to aggressive environments
  • Supervision by disc position analog feed back (0-10 V or 4-20 mA)
  • Precise, quick-acting valve and fully tight on closing
  • Linear flow curve and proportional setpoint compared to the flow coefficient
    (50% setpoint = 50% Kv)

Easy operating

  • Compact and light weight design
  • 360° rotatable postion controller
  • Ready to use proportional valve:
    no setting needed for the installation, factory mounting and valve adjustment
  • Manual control integrated, allowing test during installation
  • Easy connection: M12 connector or screw terminal via cable gland for Ø 5-10mm cable
  • LED indicators for operating status display & diagnostic functions
  • The positioner can be directly connected to an external sensor
    (double loop control)
  • Possibility to modify the control parameter via PC link without changing the PLC source program

Cost reduction

  • Low volume actuator: air consumption reduction
  • No air consumption in the reached position: energy saving
  • 50% power saving in the reached position
  • Immediate installation, delivered, factory-adjusted and tested position controller: time saving
  • Important service life without preventive maintenance
  • Possibility to connect directly a process sensor to the PositionerD controller. Savings:
    cable length, PLC analog input + PLC programming
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Perfect proportionality

Control parameters modification available

Adjustable parameters:

  • Setpoint (voltage/current)
  • Range (mini/maxi)
  • Ramp (timing)
  • External signal
  • Regulation parameters (PID)

Signal read out via scope function:

  • Setpoint, external sensor, valve stroke, internal regulation parameters

Valve diagnostics:

  • Factory settings, customer settings

Controller / PC link with Sub D / RS232 cable

Parameters visualisation


PositionerD configuration by simple click


Setpoint, external sensor and valve signal are shown together on the PC screen through the scope function.
Direct read out of cycle numbers and regulation parameters

Get the APC setting software (ZIP file - 4 Mo) - Free download

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Power and control characteristics

  • Nominal supply voltage: 24 VDC +/- 10%
  • Max. power: 7.6 W
    3.6 W (reached setpoint)
  • Setpoint: 0-10 V or 4-20 mA
  • Feedback: 0-10 V or 4-20 mA
  • Hysteresis: < 2%
  • Accuracy: < 2% of max. disc stroke
  • Repeatability: < 1%

Documentation