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Digital electropneumatic Positioner for the integrated
           mounting on process control valves




      8694  Basic version for Ø 70-225 mm


            •  Digital smart positioner
            •  Automatic teach function
            •  Contact-free position sensor
            •  Compact stainless steel design
            •  AS-Interface communication (option)
            •  Internal control air routing






         Compact positioner for integrated mounting on pneumatically operated   Dimensions [mm] (see datasheet for more details)
         process valves. Remote setpoint adjustment via a 4-20 mA signal or
         through AS-Interface. Without intrinsic compressed air consumption dur-
         ing steady state.
         A contact-free analog position sensor measures the position of the valve
         spindle.
         Simple installation through automatic tune function and setting through
         DIP-switch:
         • Close tight function
         • Characteristic curves selection
         • Reversal of effective direction
         • Switching manual /automatic operation
         • Binary input                                             B
                                                                                                      C
         Additional parametrisation options are possible through DTM devices.
                                                                        A
         A software interface can be used for, amongst others, lionization of the
         operation characteristics by using free programmable fixed points.
         The valve position indication is shown through LED components.
         As an option an analogue position feedback can be integrated.
                                                                                            A    B    C
                                                                                            91  115.4  54
         Technical Data

          Material
            Body             PPS, stainless steel
            Cover            PC                              Technical Data (cont .)
            Sealing          EPDM
          Power supply       24V DC ±10%                      Actuator system    Low air flow rate: Ø Actuator 70/90 mm
                                                                 Actuator series
          Residual ripple    Max. 10%                          ELEMENT 23XX      High air flow rate: Ø Actuator 130 mm
          Setpoint setting   4-20 mA                             Actuator series    Low air flow rate: Ø Actuator 80/100 mm
                             (0-20 mA adjustable via communication   CLASSIC 27XX  High air flow rate: Ø Actuator 125/175/225 mm
                               interface)                     Position detection module  Contact-free, wear-free
          Output resistance  180 Ω                            Stroke range valve spindle  3-45 mm
          Control medium     neutral gases, air DIN ISO 8573-1  Installation     as required, preferably with actuator in upright
            Dust concentration  Class 5 (<40 µm particle size)                   position
                                         3
            Particle density  Class 5 (<10 mg/m )                                IP65 and IP67 acc. to EN 60529
            Pressure condensation point Class 3 (<-20 °C)     Type of protection
                                         3
            Oil concentration  Class 5 (<25 mg/m )            Protection class   3 acc. to VDE 0580
          Ambient temperature  0 °C to +60 °C                 Conformity         CE acc. to EMV2004/108/EG
          Pilot air ports    Threaded ports G 1/8” stainless steel or  Options   Analogue position feedback, 4-20 mA
                             Push-in connectors (Ø 6 mm and 1/4” tube)  Communication  AS-Interface (option, in preparation)
          Supply pressure    Low air flow rate   0-7 bar     1)   The supply pressure has to be 0.5-1 bar above the minimum required pilot pressure for the
                                                1)
                             High air flow rate    3-7 bar    valve actuator.
                                           (in preparation)
          Air input filter   Exchangeable (mesh aperture ~0.1 mm)





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