Electric actuator CML-1500

linearball screwwith brushless DC motor

Product overview
The CML-1500 and CML-3000 are linear electric actuators designed for automation of large control valves and pump applications. They provide a 114.3 mm (4.5") stroke with seating thrust up to 20 kN and modulating thrust up to 13.3 kN. The units deliver precise, continuous modulation using a brushless DC motor and encoder feedback in an all-electric, explosionproof package.

Key features

• Linear output with up to 20 kN (4,500 lbf) seating thrust and up to 13.3 kN (3,000 lbf) modulating thrust
• 114.3 mm (4.5") stroke length
• Fully enclosed ball screw drive train, permanently lubricated
• Zero stick-slip for smooth operation and accurate positioning
• Position control via 4–20 mA signal with up to 0.1% accuracy
• Brushless DC motor for continuous modulation
• Contactless encoder feedback
• Adjustable speed control and manual override
• Suitable for mounting in any orientation
• Standby power <1 W; compatible with single-phase or DC supplies

Technical specifications

• Seating thrust: up to 20 kN (4,500 lbf)
• Modulating thrust: up to 13.3 kN (3,000 lbf)
• Stroke length: 114.3 mm (4.5")
• Drive train: fully enclosed ball screw, permanently lubricated
• Position control accuracy: up to 0.1% (4–20 mA)
• Motor: brushless DC
• Feedback: encoder (contactless)
• Standby power: <1 W
• Ambient temperature range: -30 to 70 °C (-22 to 158 °F); low temperature option available
• Supply compatibility: single-phase or DC power
• Local interface: six-segment LCD display with push buttons

Options & interfaces

• Fieldbus options: HART®, Foundation Fieldbus®, Profibus®, Pakscan™, RIRO, DeviceNet® and Modbus®
• Optional Reserve Power Pack (RPP) supercapacitors for fail-to-position functionality

Applications

• Automation of large control valves with high pressure ratings
• Process control and pump control in oil & gas, chemical, power and water industries
• Where precise modulating control and explosionproof certification are required

Installation & maintenance

• Mountable in any orientation; manual override provided as standard
• Permanently lubricated drive train for low maintenance
• Built-in LCD interface for quick setup and local position readout

Certifications

• Certified explosionproof to international standards
• Wide ambient temperature range and options for low-temperature environments