Rotork controls ltd

Process Control Actuators - CMA Range

Compact modulating control valve actuators

CMA range modulating actuators deliver a series of sizes suitable for linear, part-turn and multi-turn 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.

Compact modulating actuators for precise position control and modulation applications

• Accurate and repeatable position control using 4 to 20 mA signal withup to 0.1% accuracy

• Explosionproof to international standards

• Adjustable speed control

• Suitable for mounting in any orientation

• Optimised for linear, part-turn and multi-turn control valve and pump applications

• Permanently lubricated, maintenance-free drive train

• Optional Reserve Power Pack (RPP) supercapacitors for fail to position functionality

• Brushless DC motor provides reliable, accurate, continuous modulation capability

• Encoder technology provides dependable contactless feedback

• Less than 1 watt standby power

• Suitable for 1-phase or DC power supplies

• Built-in interface allows for quick and simple setup via six-segment LCD display and push buttons

• Optional integral Local Controls and positional display

• Compatible with a wide variety of fieldbus, hardwired and analogue site systems

• Linear: up to 20,017 N (4,500 lbf) seating thrust

• Part-turn: up to 124 Nm (1,100 lbf.in) seating torque

• Multi-turn: up to 45 Nm (400 lbf.in) rated torque

Rotork is independent of valve manufacturers allowing us to work with a wide variety of valve makers and manufacturers worldwide.

CMA Variants:

• CMQ - Part-turn

• CML - Linear

• CMR - Multi-turn

CMA Resources:

• CMA Literature

• CMA 3D Models