NF24A-MP Spring Return Damper Actuator, 10 Nm, AC/DC 24 V, 20 s - Belimo

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The Belimo NF24A-MP is a type of Actuator used in HVAC and ventilation systems.

The force applied by the Torque of the NF24A-MP is 10 Nm.

The power supply requested for this Rotary Actuator is 24Vac/Vdc.

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Consult the Belimo custom datasheet above or contact iacs via email for personalised assistance if you have queries about size or installation.

NF24A-MP Spring Return Actuator, 10 Nm, AC/DC 24 V, 20 s

• 10 Nm, < 150 s, 95°
• AC/DC 24 V, modulating, MP-Bus
• IP 54, manual override with integrated position stop
• Spring running time <20 s
• Operating range DC 2...10 V, 0...32 V adjustable
• Position feedback DC 2...10 V, 0...10 V, adjustable
• Connection cable PVC 1 m
• Spindle driver universal spindle clamp
• Selectable direction of rotation (right/left)
• Linking of active sensors, switches
• Angle of rotation limitation mechanically adjustable

Mode of operation: Conventional operation: The actuator is connected with a standard modulating signal of DC 0...10V and drives to the position defined by the positioning signal. Measuring voltage U serves for the electrical display of the damper position 0...100% and as slave control signal for other actuators. Operation on the MP-Bus: The actuator receives its digital positioning signal from the higher level controller via the MP-Bus and drives to the position defined. Connection U serves as communication interface and does not supply an analogue measuring voltage.

Converter for sensors: Connection option for a sensor (passive or active sensor or switching contact). The MP actuator serves as an analogue/digital converter for the transmission of the sensor signal via MP-Bus to the higher level system.

Parameterisable actuators: The factory settings cover the most common applications. Single parameters can be modified with the Belimo Service Tools MFT-P or ZTH EU.

Simple direct mounting: Simple direct mounting on the damper spindle with an universal spindle clamp, supplied with an anti-rotation device to prevent the actuator from rotating.

Manual override: By using the hand crank the damper can be actuated manually and engaged with the locking switch at any position. Unlocking is carried out manually or automatically by applying the operating voltage.

High functional reliability: The actuator is overload protected, requires no limit switches and automatically stops when the end stop is reached.

Adjustable angle of rotation: Adjustable angle of rotation with mechanical end stops.

Home position: The first time the supply voltage is switched on, i.e. at the time of commissioning, the actuator carries out a synchronisation. The synchronisation is in the home position (0%). The actuator then moves into the position defined by the positioning signal.

Adaption and synchronisation: An adaption can be triggered manually by pressing the “Adaption” button or with the PC-Tool. Both mechanical end stops are detected during the adaption (entire setting range). Automatic synchronisation after actuating the hand crank is programmed. The synchronisation is in the home position (0%). The actuator then moves into the position defined by the positioning signal. A range of settings can be adapted using the PC-Tool (see MFT-P documentation)

Electrical data:

• Nominal voltage AC/DC 24 V
• Nominal voltage frequency 50/60 Hz
• Nominal voltage range AC 19.2...28.8 V / DC 21.6...28.8 V
• Power consumption in operation 7 W
• Power consumption in rest position 3.5 W
• Power consumption for wire sizing 9.5 VA
• Connection supply / control Cable 1 m, 4 x 0.75 mm²
• Parallel operation Yes (note the performance data)

Functional data:

• Torque motor Min. 10 Nm
• Torque spring return Min. 10 Nm
• Positioning signal Y DC 0...10 V
• Positioning signal Y note Input impedance 100 kΩ
• Control signal Y variable Open-close 3-point (AC only) Modulating (DC 0...32 V)
• Operating range Y DC 2...10 V
• Operating range Y variable Start point DC 0.5...30 V End point DC 2.5...32 V
• Position feedback U DC 2...10 V
• Position feedback U note Max. 0.5 mA
• Position feedback U variable Start point DC 0.5...8 V End point DC 2.5...10 V
• Position accuracy ±5%
• Direction of motion motor Selectable with switch L / R
• Direction of motion variable Electronically reversible
• Direction of motion emergency control function Selectable by mounting L / R
• Manual override By means of hand crank and locking switch
• Angle of rotation Max. 95°
• Angle of rotation note adjustable starting at 33% in 2.5% steps (with mechanical end stop)
• Running time motor 150 s / 90°
• Motor running time variable 40...150 s
• Running time emergency control position <20 s / 90°
• Running time emergency setting position note <20 s @ -20...50°C / <60 s @ -30°C
• Adaption setting range manual
• Adaption setting range variable No action Adaption when switched on Adaption after pushing the gear disengagement button
• Override control MAX (maximum position) = 100% MIN (minimum position) = 0% ZS (intermediate position, AC only) = 50%
• Override control variable MAX = (MIN + 32%)...100% MIN = 0%...(MAX – 32%) ZS = MIN...MAX
• Sound power level motor 40 dB(A)
• Spindle driver Universal spindle clamp 10...25.4 mm
• Position indication Mechanically, pluggable
• Service life Min. 60,000 emergency positions

Safety:

• Protection class IEC/EN III Safety extra-low voltage
• Protection class UL UL Class 2 Supply
• Degree of protection IEC/EN IP54
• Degree of protection NEMA/UL NEMA 2, UL Enclosure Type 2
• EMC CE according to 2014/30/EU
• Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14
• Certification UL cULus according to UL 60730-1A, UL 60730-2-14 and CAN/CSA E60730-1:02
• Mode of operation Type 1.AA
• Rated impulse voltage supply / control 0.8 kV
• Control pollution degree 3
• Ambient temperature -30...50°C
• Non-operating temperature -40...80°C
• Ambient humidity 95% r.h., non-condensing
• Maintenance Maintenance-free

Weight: 2.2 kg