Belimo AMB24-MFT Actuator

The Belimo AMB24-MFT is a robust rotary actuator designed for high-torque applications requiring precise control of dampers or valves in commercial HVACR systems. Delivering 180 in-lb of torque, this Multi-Function Technology (MFT) actuator offers unmatched field flexibility, allowing contractors to configure control signals for 2-10 VDC, 4-20 mA (with a 500 Ohm resistor), PWM (1500 Ohm), floating point, or on/off operation. Running on 24VAC/DC, the brushless DC motor is micro-processor controlled, ensuring constant torque and speed regardless of load variations. For technical deployments, the AMB24-MFT features a manual override for emergency positioning and a universal spindle clamp for secure mounting. Its electronic stall protection eliminates the need for limit switches, preventing motor burnout and ensuring long-term duty cycle reliability. Whether utilized for proportional control or simple rotary actuation, this unit provides the precise positioning required for sophisticated airflow and hydronic management.

Key Technical Benefits

• Multi-Function Technology (MFT): Allows customized field configuration of input and feedback signals to match specific controller requirements.
• High Torque Output: Rated at 180 in-lb to handle larger damper areas and high-pressure valve applications without slippage.
• Brushless DC Motor: Provides consistent performance and reduces maintenance requirements compared to brushed alternatives.
• Universal Compatibility: Supports 2-10VDC, 4-20mA, or PWM control logic, making it a versatile stock item for various job sites.
• Electronic Stall Protection: Protects the internal gear train by automatically shutting down the motor at the end of the stroke or if an obstruction is detected.

Common Contractor Questions

How do I wire the AMB24-MFT for a 4-20mA signal?
A 500 Ohm resistor must be wired in parallel with the 2-10VDC input signal to convert the current signal into the appropriate voltage for the actuator logic.

Can this actuator be used in a fail-safe application?
The AMB24-MFT is a non-spring return actuator. For fail-safe requirements, an electronic fail-safe (EFS) model or external power backup is necessary.

What is the typical run time for this model?
The standard run time is approximately 95 seconds, providing steady and stable modulation to prevent hunting in the control loop.

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.