NMB24-MFT Belimo Actuator

Datasheet

For proportional modulation of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.

The default parameters for 2 to 10 VDC applications of the …MFT actuator are assigned during manufacturing. If necessary, custom versions of the actuators can be ordered. The parameters can be changed by two means: pre-set and custom configurations from Belimo or on-site configurations using the Belimo PC-Tool software.

The actuator is not provided with and does not require any limit switches, but is electronically protected against overload. The anti-rotation strap supplied with the actuator will prevent lateral movement. The NMB(X) series provides 95° of rotation and a visual indicator indicates position of the actuator. When reaching the damper or actuator end position, the actuator automatically stops. The gears can be manually disengaged with a button on the actuator cover. The NMB(X)24-MFT actuators use a brushless DC motor, which is controlled by an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’s rotation and provides a digital rotation sensing (DRS) function to prevent damage to the actuator in a stall condition. Power consumption is reduced in holding mode. Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto the actuator body for signaling and switching functions.

Specifications

• Actuator Type
  • Non fail-safe
• Angle of Rotation
  • 95
• Control Type
  • MFT/Programmable
• Degree of Protection
  • IP54, NEMA 2, UL Enclosure Type 2
• Electrical Connection
  • cable
• Manual Override
  • External push button
• Power Consumption (Holding)
  • 3 W
• Power Consumption (Running)
  • 5 W
• Running Time (Motor)
  • Default 150 s, variable 45…170 s
• Running Time range (Motor)
  • ..170 s
• Safety Function
  • NO
• Shaft Diameter
  • 1/2…1.05″ round, centers on 1/2″ and 3/4″ with insert, 1.05″ without insert
• Torque
  • 90 in-lb [10 Nm]
• Voltage AC/DC
  • AC/DC 24 V