Belimo GMB24-MFT Actuator

The Belimo GMB24-MFT Actuator is a heavy-duty non-spring return rotary actuator engineered for precise control of large dampers and valve assemblies in high-torque HVAC applications. Delivering 360 in-lb of torque, this unit operates on 24VAC/DC power and utilizes Multi-Function Technology (MFT) for versatile field configuration. The GMB24-MFT supports 2-10VDC proportional control, 4-20mA (via 500 Ohm resistor), floating point, and On/Off signals. This direct-coupled actuator features a universal clamp for easy mounting on various shaft sizes, ensuring a secure mechanical connection without additional linkages. Its brushless DC motor technology provides constant torque and reduces maintenance cycles in demanding commercial environments. Technicians can rely on its IP54 rated housing and manual override button for streamlined commissioning and system testing. Designed for integration with BAS systems, it allows for adjustable running times and control parameters to match specific site requirements.

Key Benefits

• High Torque Output: Provides 360 in-lb (40 Nm) to efficiently drive large-scale HVAC dampers and control valves.
• Multi-Function Technology: Offers flexible field-customizable control signals including PWM, 2-10VDC, and floating point.
• Synchronized Operation: Supports parallel wiring for multiple actuators on a single shaft or complex damper banks.
• Durability: Features a brushless motor and electronic stall protection to prevent damage during obstructions.
• Manual Override: External push-button allows for quick manual positioning during installation and emergency service calls.

Common Questions

How do I change the control signal on a GMB24-MFT?
The control parameters are field-adjustable using the Belimo PC-Tool or ZTH US handheld tool, allowing for VDC, mA, and PWM signal configuration.

Is this actuator suitable for fail-safe applications?
No, the GMB24-MFT is a non-spring return actuator. For fail-safe requirements, a spring-return model or an electronic fail-safe (EFS) equivalent should be selected.

Can this be used with 4-20mA controllers?
Yes, by using an external 500 Ohm resistor, the GMB24-MFT can interpret 4-20mA signals for precise modulating control.

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.