Motorized valve actuator CML

manuallinearadjustable

Overview
CML linear output compact modulating actuators are an all-electric solution for control valve and pump applications. They provide exact position control and continuous modulation with repeatable accuracy up to 0.1%. Units are certified explosionproof to international standards and available with optional integral local controls and an optional Reserve Power Pack for fail-to-position functionality.

Features

• Linear output drive with up to 20,017 N (4,500 lbf) seating thrust
• Accurate and repeatable position control via 4–20 mA signal with up to 0.1% accuracy
• Explosionproof construction certified to international standards
• Adjustable speed control and manual override standard
• Electronic thrust limiting and two adjustable position switches
• Brushless DC motor for continuous modulation capability
• Encoder contactless feedback for reliable position sensing
• Permanently lubricated, maintenance-free drive train
• Wide ambient temperature range (-30 to 70 °C standard) with low-temperature option
• Less than 1 watt standby power; suitable for single-phase or DC supplies
• Field-selectable adjustments: deadband, zero/span, command signal type, acting direction, manual/auto, output on loss of signal
• Built-in interface with six-segment LCD and push-buttons for quick setup
• Optional integral local controls with LCD positional display
• Optional Reserve Power Pack (supercapacitors) for fail-to-position
• Compatible with multiple fieldbus and protocol options (HART®, Foundation Fieldbus®, Profibus®, Pakscan™, RIRO, DeviceNet®, Modbus®)

Applications
Designed for control valve and pump installations requiring precise linear modulation, continuous modulation capability and certified explosionproof construction.

Technical specifications

• Seating thrust: up to 20,017 N (4,500 lbf)
• Position control accuracy: up to 0.1%
• Control input: 4–20 mA analogue, field selectable
• Motor: brushless DC
• Feedback: encoder (contactless)
• Standby power: <1 watt
• Power supply: single-phase or DC compatible
• Ambient temperature: standard -30 to 70 °C (-22 to 158 °F); low-temperature option available
• Mounting: any orientation
• Drive train: permanently lubricated, maintenance-free
• Local controls: optional integral local controls with LCD position display
• Reserve power: optional Reserve Power Pack (supercapacitors) for fail-to-position
• Safety/standards: explosionproof certification to international standards; regional approvals available
• Interfaces: supports HART®, Foundation Fieldbus®, Profibus®, Pakscan™, RIRO, DeviceNet®, Modbus®