Rotork CMA Range - CML Linear Control Valve Actuator

Brand: Rotork PLC

CMA range modulating actuators deliver a series of sizes suitable for linear (CML), part-turn (CMQ) and multi-turn (CMR) control valve and pump applications requiring precise position control and continuous modulation.

The Rotork CMA Range provides for simple, safe and easy set-up via an internal electronic 6-segment LCD display and push button configuration.

CML-1500 and CML-3000 maintain the array of features and functions available with the existing CMA range while substantially extending the performance capabilities for direct drive linear valves.

CML actuators provide an all electric alternative to spring diaphragm actuators where pneumatic supply is not available or supply issues exist.

CMA can also offer significant emission reductions compared to equivalent pneumatic actuators and the necessary infrastructure required to support them.
  • Can be powered by 1-phase or direct current supplies
  • Linear drive action
  • Optional Local Controls with LCD Display (linear, part-turn, multi-turn) as well as Local Controls with LCD Display Plus Supercapacitor Reserve Power Pack (RPP) (linear and part-turn only) units available
  • Permanently lubricated and maintenance free drive train
  • Capable of being mounted in any orientation
  • Accurate and repeatable position control
  • 4 to 20 mA loop powered, feedback signal
  • Digital communication options including HART®, Foundation Fieldbus®, Profibus®, Pakscan™, RIRO, DeviceNet® and Modbus® available
  • Wide standard ambient temperature range -22° to 158° F (-30° to 70° C)
  • Optional low temperature trim
  • Manual override standard
  • Electronic thrust/torque limiting
  • Two standard adjustable position switches
  • Field selectable adjustments for:
    • Deadband
    • Zero and span
    • Command signal type
    • Standard or reverse acting
    • Manual-auto operation
    • Output shaft position on loss of signal




  • Manual Override


  • 0.1%


  • DeviceNet
  • FOUNDATION Fieldbus
  • HART
  • Modbus
  • Pakscan
  • RIRO


  • 1%

Operating Temperature

  • -22° to 158° F (-30° to 70° C)


  • 0.1%

Environmental Protection

  • IP66/67
  • IP68
  • NEMA 4
  • NEMA 6

Approvals & Certifications

  • ATEX
  • CSA
  • FM
  • IECEx

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