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    Electrohydraulic servoactuators

    March 4, 2013
    Digital servocylinders provide positioning of closed-loop control for any hydraulic axis with optional alternated position and pressure/force controls. They include a low-friction servocylinder with integral position/pressure/force transducers and high-performance servoproportional valve with on-board electronic driver and controller.

    Digital servocylinders provide positioning of closed-loop control for any hydraulic axis with optional alternated position and pressure/force controls. They include a low-friction servocylinder with integral position/pressure/force transducers and high-performance servoproportional valve with on-board electronic driver and controller. They are rated for nominal pressure to 16 MPa (160 bar) and maximum to 25 MPa (250 bar). Cylinder comes in bore sizes from 40 to 200 mm, rated for maximum speeds of 0.5 to 2 msec and linearity error of ±0.1 to ±0.2%.

    Compact designs are ready to use after piping to the hydraulic source and wiring to the electronic system.
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    Basic operational controls are include • slave control: servoactuator precisely performs in real-time the motion closed loop control, according to external analog or fieldbus position reference signals, • motion cycle control: servoactuator carries out a pre-programmed position/time motion cycle with closed loop control. Machine electronic unit operates start, stop and phase switch-over by on-off or fieldbus commands, and • alternated position Vs force controls: pressure/force transducers must be installed in the system. A specific algorithm automatically selects time by time the active control. Performance parameters and motion cycle are set via PC using PC software. Programming interfaces available include Serial, CANopen, and PROFIBUS DP.

    Atos, (519) 465-3063, www.atos.com

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