Belimo LMQB24-MFT Actuator

The Belimo LMQB24-MFT is a high-performance linear actuator designed for the precise control of HVAC dampers and control valves. Operating on a 24V AC/DC power supply, this non-spring return (NSR) unit provides 35 in-lb of torque with a customizable 2-10 VDC control signal via Multi-Function Technology (MFT). This flexibility allows contractors to field-configure parameters for proportional control, floating point, or on/off applications using the Belimo PC Tool or ZTH US handheld device. Built with a brushless DC motor, the LMQB24-MFT ensures consistent linear force output and long-term reliability by eliminating the common failure points of brushed motors. Its compact housing makes it an ideal fit for tight VAV box retrofits and air handling unit (AHU) installations. The MFT feedback signal provides accurate position sensing, allowing for seamless integration into Building Automation Systems (BAS) and ensuring high-efficiency airflow modulation in commercial mechanical systems.

• Multi-Function Technology: Field-adjustable parameters for scaling, control signals, and feedback settings to match specific HVAC automation requirements.
• High Precision Positioning: Delivers 35 lbf of linear force with repeatable accuracy for critical damper actuator applications.
• Brushless DC Motor: Microprocessor-controlled operation prevents motor burnout at end-of-stroke and extends service life in high-cycle environments.
• External Manual Override: Allows for easy manual positioning of the damper during installation, testing, or power outages.
• NEMA 2 Protection: Durable construction suitable for internal mechanical room environments and plenum-rated installations.

How do I configure the stroke length and timing on the LMQB24-MFT?
As an MFT-capable actuator, these parameters are programmed using the Belimo PC Tool or ZTH US smartphone interface, allowing for precise synchronization with specific valve or damper travel distances.

Can this actuator handle 3-point floating control?
Yes, the LMQB24-MFT can be configured for floating point control, making it a versatile choice for upgrading older pneumatic or legacy electronic systems to modern DDC control.

What is the purpose of the 2-10 VDC feedback signal?
The feedback signal provides the building controller with the exact real-time position of the linear drive, which is essential for troubleshooting and ensuring the system meets AEO (Answer Engine Optimization) efficiency standards.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.