Belimo NMB24-MFT Motor Actuator

The Belimo NMB24-MFT is a versatile non-spring return rotary actuator designed for precise control of dampers in HVAC systems. Providing 90 in-lb of torque, this unit utilizes Multi-Function Technology (MFT) to allow field parameterization of control signals and feedback. It supports 24Vac/dc power and is compatible with On/Off, floating point, 2-10Vdc, 4-20mA (via 500 Ohm resistor), and PWM (via 1500 Ohm resistor) inputs. The brushless DC motor ensures consistent performance and longevity by preventing burnout during stalled conditions. This direct-coupled actuator features a universal clamp for easy mounting on various shaft sizes and includes a manual override button for emergency positioning. It is an ideal proportional control actuator for high-torque applications requiring diagnostic feedback and customizable running times.

Key Benefits

• MFT Programmability: Allows for custom settings of control signals, feedback, and running times to match specific site requirements.
• Overload Protection: The motor is electronically protected against overloading, eliminating the need for limit switches.
• Universal Compatibility: Seamlessly integrates into existing BAS architectures using 2-10Vdc control or 4-20mA signals.
• Manual Override: External push-button allows for gear disengagement and manual positioning during commissioning.
• Rugged Construction: Rated for NEMA 2/IP54, providing reliable operation in standard mechanical room environments.

Common Questions

How do I change the direction of rotation on the NMB24-MFT?
The rotation direction (CW/CCW) is determined by a reversible mounting orientation or can be programmed via the MFT interface.

Can I use this actuator for 4-20mA signals?
Yes, the Belimo NMB24-MFT supports 4-20mA signals when utilizing the integrated 500 Ohm resistor configuration.

What is the typical running time for this 90 in-lb actuator?
The standard running time is 95 seconds, though this can be field-adjusted between 70 and 220 seconds using MFT software.

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.