Limitorque MXb - Non-invasive Multi-turn Actuator

Features and advantages

Multiple configurations including pure torque, thrust-based, direct-stroke thrust base and lift-rod applications

Uncompromising and superior long-term performance achieved through the use of higher grade components and isolation of input/output from external interference

Enhanced user interface, simplified menu structure and multiple configuration options improve the user experience, making installation and commissioning quicker

Visibility of process control improved through advanced diagnostics and analytics, larger memory capacity high-resolution visualisation of operational charts, logs 

and trending data

Weatherproof, explosion-proof and diving applications

100% repeatable absolute encoders for position sensing; configurable electronic torque switch for torque sensing

Three-phase 50/60 Hz options from 208 575V

Configurable via 11 languages on the actuator: English, Spanish, German, French, Italian, Portuguese, Mandarin,, Indonesian, Katakana and Turkish

Standard UPS for commissioning from 12 to 24 VDC with no mains or backup power with feedback and alarm on power failure

Four standard 5A relays for status and alarm; 5A monitoring relay for remote operation feedback

The and control electronics of the MXb actuators are backward compatible and can be easily retrofitted to previous MX actuator models

Specifications

Explosion-proof certification

ATEX IIB with a variety of configurations including torque only, thrust-based direct-stroke thrust base, and lifting rod applications

Unmatched reliability and superior service life achieved through the use of higher grade components and isolation of input/ from external interference 

Improved user interface, simplified menu structure, and multiple configuration options enhance the user experience, making installation and commissioning quicker

Improved of process control through advanced diagnostics and analytics, larger storage capacity, and high-resolution visualized operation charts, logs, and trend data 

Weatherproof,-proof, and submersible applications 

100% repeatable redundant absolute value encoder for position sensing; configurable electronic torque switch for torque sensing 

Three-phase 50/60 Hz options from 208 to 575V 

Configurable in 11 languages on theuator: English, Spanish, German, French, Italian, Portuguese, Mandarin, Russian, Indonesian, Katakana, and Turkish 

Standard UPS foring with 12 to 24 VDC power, no mains or backup power, feedback and alarm in case of mains failure 

Four standard5A relays for status and alarm; 5A monitoring relay for remote operation feedback 

The display and control electronics components of the MXb actuator are compatible and can be easily retrofitted to previous MX actuator models. /IIC 

IECEX IIB/IIC 

FM B, C, 

Design standards 

EN15714-02 - Industrial valves; actuators: Part 2

ISA-96.2.01-2016 - Specification Guide for Electric Valve Actuators. 

Compliant with relevant European Directives (CE mark )

Test standards 

AWWA C542 - Electric Motor Actuators for Valves and Slides

ASTM B117 - Standard for Salt Spray Testing

Rated torque range: 

20 to 1,700 ft-lb output torque; 

Additional torque be supported by adding a gearbox. 

Temperature: -30°C to 70°C (-22°F to 15°F) 

Speed: 15 to 200 RPM 

Materials 

Housing: 356-T6 aluminum alloy 

Cap: 380/383 aluminum alloy

Configuration

Debugging service

The MXb actuators can be used for commissioning applications with up to 600 starts per hour.

Discrete state alarms

Four standard and four optional states and alarm contacts are available for additional discrete feedback.

Analog feedback

Analog voltage or current for position (APT) or torque (ATT).

Network service

The MXb actuators can be used with the following network connections: Mod DDC; Modbus TCP/IP; Profibus DP; Profibus DP and RedCom; Foundation fieldbus H1; Profibus PA; DeviceNet HART.

Input options

Input options are available for ESD, PST, suppression, additional intermediate position stops, delayed ESD, remote or local control.